Magnum - Norfield
Transcription
Magnum - Norfield
Effective S/N: DJ-2674-95 Release 1 Document Number 17-016 First release June 6th 2005 Norfield Industries P.O. Box 459 Chico CA, 95927 Technical Support: (530-891-4214 Parts: (800) 824-6242 Serial No.: Date Sold: Norfield Industries is the name that represents Quality, Reliability, Support, Innovation and True Customer Service. We have been dedicated to providing quality products and excellent customer service for more than 40 years. Norfield Industries has earned a reputation in the prehanging industry for setting standards for reliable machinery, full technical support, machine parts, full line industrial woodworking tools and supplies and a team of customer care representatives to support you! Our factory-trained technical personnel are ready to assist you on the telephone or in your shop. 3 Safety ................................................................................................................................................. 6 Introduction ....................................................................................................................................... 9 Specifications ..................................................................................................................................... 10 Section 1 Installation ......................................................................................................................... 13 1.1 Shipping Damage & Shortages ....................................................................................................... 13 1.2 Installation .................................................................................................................................... 13 1.3 Positioning the Machine................................................................................................................. 14 1.4 Locations of Connections ............................................................................................................... 14 1.5 Lifting & Moving .......................................................................................................................... 15 1.6 Electrical Connections ................................................................................................................... 15 1.7 Air Supply & Connections ............................................................................................................. 16 1.8 Vacuum Requirements ................................................................................................................... 18 Section 2 Operation ........................................................................................................................... 19 2.1 Preface .......................................................................................................................................... 19 2.2 Running the Machine ..................................................................................................................... 20 Section 3 Settings & Adjustments ..................................................................................................... 23 3.1 Regulator Setting ........................................................................................................................... 23 3.2 Air Tool Lubricator Setting ............................................................................................................ 23 3.3 Adjustment for Door Width............................................................................................................ 24 3.4 Adjusting for Normal Width Doors ................................................................................................ 24 3.5 Adjusting for Odd width Doors ...................................................................................................... 24 3.6 Undercut ........................................................................................................................................ 24 3.7 Backset Adjustment ....................................................................................................................... 25 3.8 Lock Height ................................................................................................................................... 27 3.9 Header Clearance ........................................................................................................................... 28 3.10 Changing the Lock Bit ................................................................................................................. 29 3.11 Changing the Latch Drill Bit ........................................................................................................ 30 3.12 Changing the Lock Bore Backup Block ........................................................................................ 30 3.13 Sander Adjustment ....................................................................................................................... 30 3.14 Changing Butt Spacing ................................................................................................................ 31 3.15 Changing Size of Mortise ............................................................................................................. 32 3.16 Routing Flat Jambs ...................................................................................................................... 33 3.17 Changing the Mortise Depth......................................................................................................... 34 Section 4 Special Adjustment ............................................................................................................ 37 4.1 Infeed Bed ..................................................................................................................................... 37 4.2 Adjustment of Infeed Bed Clutch ................................................................................................... 38 4.3 Outfeed Roller ............................................................................................................................... 38 4.4 Cutterhead ..................................................................................................................................... 39 4.5 Cutterhead Height .......................................................................................................................... 39 4.6 Cutterhead Replacement ................................................................................................................ 40 4.7 Cutterhead Motor Drive belt .......................................................................................................... 41 4.8 Sander Wheels Replacement .......................................................................................................... 41 4.9 Sander Drive Belt .......................................................................................................................... 42 4.10 Replacement of Powerfeed Wheels............................................................................................... 42 4.11 Centering the Latch Drill in the Door ........................................................................................... 42 4.12 Aligning lock and Latch Drills ..................................................................................................... 43 4.13 Adjustment of Drill Sensors - Lock .............................................................................................. 45 4.14 Adjustment of Drill Sensors - Latch ............................................................................................. 46 4.15 Latch Plate Mortise Centering ...................................................................................................... 47 4.16 Latch Plate Depth ........................................................................................................................ 47 4 4.17 Main Bar ..................................................................................................................................... 49 4.18 Jamb Rack Adjustment................................................................................................................. 50 4.19 Leveling the Router Carriage ....................................................................................................... 51 4.20 Changing the Router Bit Radius ................................................................................................... 52 4.21 Butt Router Carriage Bushings ..................................................................................................... 53 4.22 Changing the Butt Router from 0 to 3-1/2 Degree ......................................................................... 54 Section 5 Maintenance ....................................................................................................................... 55 5.1 General Maintenance ..................................................................................................................... 55 5.2 Cutterhead ..................................................................................................................................... 55 5.3 Router Bits .................................................................................................................................... 56 5.4 Drills ............................................................................................................................................. 56 5.5 Filters ............................................................................................................................................ 56 5.6 Regulator ....................................................................................................................................... 56 5.7 Air Tool Lubricator........................................................................................................................ 57 5.8 Cylinders ....................................................................................................................................... 57 5.9 Sander Belt .................................................................................................................................... 57 5.10 Bearings ...................................................................................................................................... 57 5.11 Lubrication of Bearings and Bushings .......................................................................................... 57 Section 6 Troubleshooting ................................................................................................................. 59 6.1 Preface .......................................................................................................................................... 59 6.2 Drill Cycle Sequence ..................................................................................................................... 59 6.3 Width Index Speed Controller ........................................................................................................ 62 Troubleshooting Guide ...................................................................................................................... 64 5 Safety considerations are an important element of machine installation and operation. Actively maintaining a safety mindset about yourself and others while working around or on the equipment is of primary importance. Operators and maintenance personnel should refer to the safety information on the following pages to familiarize themselves with warning labels and practices providing for safe operation and servicing of this machine. Danger indicates an imminently hazardous situation, which if not avoided, WILL result in death or serious injury. Warning indicates a potentially hazardous situation which, if not avoided, COULD result in death or serious injury. Caution indicates a potentially hazardous situation which, if not avoided MAY result in minor or moderate injury. It may also be used to alert against unsafe practices. Caution, without the safety alert symbol, indicates a potentially hazardous situation which, if not avoided may result in property damage (i. e. not personal injury). Notice indicates important information that if not followed may CAUSE damage to the equipment. Mandatory Action conveys an action step that should be taken to avoid the hazard. 6 Do not operate this machine unless all guards are in place and working correctly. If any guards or hazard labels are missing or damaged call Norfield's Service department immediately and request a replacement at 800-824-6242. Read and understand the operator's manual before using this machine. Failure to follow proper operating instructions could result in death or serious injury. This machine, when in operation, produces wood chips and dust. The operator and all persons in the work area MUST wear approved eye protection with permanently attached, rigid plastic side shields. These safety glasses must conform to ANSI Z87.1 standards and will have "Z87" printed on the lens. This machine, when in operation, produces a noise level greater than 85dB. The operator and all persons in the work area MUST wear approved hearing protection. OSHA has determined that a noise level in excess of 85dB average in 8 hours can cause permanent hearing damage. We recommend that hearing protection be worn even if the decibel level is below 85dBA. Certain types of wood dust can cause allergic reactions, Sawdust has been determined to be a Group A carcinogen by the International Agency for Research on Cancer (IARC). A dust collection system or an approved personal dust mask MUST be used during the operation of this equipment. This machine has moving parts that loose clothing and long hair can become entangled in. Take care not to become caught between the work material and the feed mechanisms or any other moving components. Before beginning any service repairs, general maintenance, or adjustments you MUST follow proper Lockout Tag-Out procedures. OSHA regulation 1910.147 establishes a minimal lockout tag-out procedure to assist employers in development of their own procedures. Only trained personal that have read and understand the operator's manual and all the safety precautions may operate this machine. 7 Inspect the machine at the beginning and end of each shift for damaged or cracked components such as, but not limited to, saw blades, router bits, drill bits, and boring bits. Never leave this machine unattended while it is in operation. Make sure that all electrical and air is in the off position when the machine is not in use or is unattended and that any cutting blades have come to a complete stop. Do not attempt to clean material from this machine until all the cutting blades have come to a complete stop. Even when the machine has been turned to the off position it may take up to several minutes for the blades to coast-down to a complete stop. Woodworking machinery is inherently dangerous, common sense and good safety practices are your best defense against injury. If you have any questions regarding the correct operation of the machine and safety procedures in this manual call the Norfield Industries Service Department at 800-824-6242. 8 Your new NORFIELD Magnum Door and Jamb machine was designed and manufactured conforming to a set of rigid specifications by trained workers who take pride in the quality of their work. Each Norfield machine must pass a series of tests and inspections before it is released for shipment. In order that this machine may provide you with a long period of continuous and satisfactory service, it is necessary that it be properly installed, operated, and maintained. This manual has been prepared to assist you in carrying out these functions. We urge you to study the contents of this manual and to be guided by the suggestions herein. 9 Electrical Requirement AC Line Voltage Phase Hertz Amperage 208 /208 3/1 60 30/30 230/208 3/1 60 30/30 460/230 3/1 60 20/30 3 Phase Motor Specification Application Motor Part Number HP Volt Amp Lock Drill Norfield 6801-021 2 230 6.2 Latch Drill Norfield 6802-032 1 230 3.4 Sander Baldor M3546T 1 230 3.4 Cutterhead Baldor M36136T 5 230 12.4 Elevator Dayton 3N842 1/3 230 1.0 Single Phase Motor Specification Powerfeed Dayton 4Z531 1/15 DC Volts .75 Router Motor Dewalt DW616 1-1/2 115 9.0 FPR Motor Dewalt DW616 1-1/2 115 9.0 Air Requirements Machine Cycle Rate Shipping Weight Minimum Floor Space Requirement (Width x Length x Height) 2.2 CFM @ 90 PSI 8.5 CFM @ 90 PSI with optional air screwdriver 30 Doors/hour Approx 2600 Lbs 7’-5” X 26’-4” X 8’-9” 10 1/2" I.D. Minimum air line when less than 20 feet from compressor OR 3/4" I.D. minimum air line when more than 20 feet from compressor Machine Capabilities Door Width 1’-6” to 4’-0” Door Height Up to 8’-0” (Up to 9’-0” capabilities optional) Door Thickness 1-1/8” to 1-3/4” (Up to 2-1/4” capabilities optional) Jamb Width 2-1/2” to 10-1/2” Jamb Length Up to 8’-0” (Up to 9’-0” capabilities optional) Jamb Thickness 1/2” to 1-5/8” Stop Thickness 1/2” Maximum Butt Spacing Variable, 6-1/2” Minimum from top of door Butt Radius 1/4” to 5/8” 3-1/2”, 4-0”, 4-1/2”, 5-0” Butt Size 2-3/8” to 5-0” Lock Backsets Up to 1-1/4” X 2-3/4” Faceplate Routing 11 12 1.1 SHIPPING DAMAGE & SHORTAGES Before and after the crated machine is unloaded from the truck the crate should be inspected for any signs of damage. If suspected damage is found it must be noted on the bill of lading and signed by the driver and the person receiving the shipment. After the machine has been uncrated inspect it and all other contents of the crate for shipping damage. In the event that damage has occurred in transit notify the freight carrier and Norfield Industries immediately. Inspect the complete shipment against the packing slip to make sure all items listed are accounted for. If any shortages are noticed, the freight carrier and Norfield Industries should be notified immediately. While any shortages, other than back orders, or freight damages are the complete responsibility of the freight carrier, Norfield Industries desires to be notified so that the replacement of lost or damaged parts can be expedited. 1.2 INSTALLATION The information in this chapter refers to the installation and setup of the Magnum Door and Jamb Machine. Since the purchase of the machine includes a start-up by a field technician, the following five items MUST be accomplished before the technician arrives: 1. Uncrate the machine and inspect for shipping damage or shortages. 2. Position the machine in its permanent location 3. Provide the proper electrical supply (7 wire input) and make connections to machine and vacuum unit. 4. Provide the proper air supply and make connections. 5. Position and connect the vacuum system. 13 1.3 POSITIONING THE MACHINE This figure shows the overall dimensions of the Magnum Door and Jamb machine. It is recommended that you allow 4 feet between the rear of the machine, where the electrical panel is located, and any wall or structure. Material flow into and out of the machine should also be considered for optimum performance. On the infeed end of the machine a minimum 8 feet of loading space is recommended and on the outfeed end a minimum 4 feet is recommended. Since the vacuum system can be mounted on either end of the machine placement of the machine should allow adequate space for the vacuum. 1.4 LOCATIONS OF CONNECTIONS Figure 1.1 shows the location of the electrical, air and vacuum connection points. Refer to the other figures noted for complete detail and instructions. If you have any questions regarding any of these connections contact Norfield’s Service Department for advice at (530) 891-4214. FIG 1.1 14 1.5 LIFTING & MOVING THE MACHINE The easiest way to move the machine is by picking it up from above. A steel bracket is supplied with the machine that can be used as a pick-up point. A chain can be passed through the bracket and over the forks of a fork lift see figure 1.2. Make sure the chain is strong enough to support the weight of the machine (approx. 2600 lb.). The bracket is secured to the top of the frame just to the right of the control panel. The machine can also be lifted from underneath, but it is not recommended due to uneven weight distribution. Also, be careful not to damage any tubing, wiring, or components mounted to the front or bottom of the frame. Do not lift the machine from any part of this section FIG 1.2 1.6 ELECTRICAL CONNECTIONS All electrical connections MUST be made by a qualified electrician. Before making any electrical connections, insure that the voltage listed on the specification plate on the electrical box door match those of your building (i.e. 208 volt-3 phase-60 Hz, 230 volt-3 phase-60 Hz, or 460 volt/480 volt-3 phase-60 Hz). Refer to Figure 1.3 for electrical connections to the machine. Norfield recommends that you have main disconnect switches (one for each input source) near the machine. These switches are usually wall mounted in a position convenient to the operator for safety reasons consult your electrician. 15 FIG. 1.3 1.7 AIR SUPPLY & CONNECTIONS Clean, dry air is important for the continued performance and low maintenance of air operated tools and equipment. Foreign materials such as moisture, dirt, grit, and pipe scale, all generally present in air systems, can cause severe abrasive wear in valves and cylinders. Before connecting the Magnum to your air supply, insure that you have adequate mainline filtration and drainage. In addition to adequate filtration, Norfield also highly recommends the use of an air drying system. If you have any questions regarding your air system, please contact Norfield Industries or consult with the field technician upon arrival for the start-up, see figure 1.4. The Magnum requires 2.2 CFM at 90 PSI of clean, dry air for proper operation. If an air screwdriver and air pre-drill are to be used through the machine's F.R.L. (Filter Regulator Lubricator) an additional 6.3 CFM will be required. (Total 8.5) (Continued on page 17) 16 (Continued from page 16) The air supply is connected to the machine at the F.R.L. unit. The supply line should be 1/2 inch. I.D. minimum if the length of the run is 75 feet or less. If the length of the run is between 100 and 300 feet, 3/4 inch I.D. pipe should be used. Use 1 inch. I.D. pipe for runs between 300 and 1000 feet. Never use a supply line less than 1/2 inch inner diameter or any air fitting to connect the air supply to the machine with less than a 3/8 inch diameter. 17 1.8 VACUUM REQUIREMENT A dust collection unit must be used with this machine. If the machine is connected to an existing in-plant dust collection system, the system must be capable of moving at least 1900 CFM (Cubic Feet per Minute) at the connection point. Vacuum connection is made at the Vacuum Collector adapter which can be located on either end of the machine. (See the PreInstallation drawing for detailed specifications). Refer to figure 1.5. If the Norfield Vacuum unit was purchased with this machine, a cord end is provided on the backside of the machine (230V Phase 3 @ 10A). Allow adequate space for access to the dust bags and controls of the vacuum system. The vacuum unit may be placed at either end of the Magnum depending on the layout of your shop. It is important to have as few bends as possible in the 8” vacuum hose (connecting the vacuum unit to the machine) as this may affect the efficiency of the vacuum. For optimum performance lime the vacuum hose length the no more than 10 feet. FIG. 1.5 18 2.1 PREFACE The following is a brief description of the operation procedures of the Magnum. It is recommended that before processing a door, the operator should make sure that the machine is properly adjusted for door width, undercut, butt size, lock height, backset, size of lock and latch bores and size of the faceplate rout. Proper procedures for making these adjustments are outlined in Section 4. Refer to figure 2.1 below (for adjustment locations). FIG 2.1 19 2.2 RUNNING THE MACHINE 1. Turn on SIZER, POWERFEED, and DRILLS motors (In that order). These motors should remain "ON" unless the machine is to be idle for an extended period of time. Please refer to figure 2.2 below. 2. Adjust the Top Section for correct door width. On the operator control panel there are two 3-position selector switches that spring return to the center. They are under the heading “DOOR WIDTH”. One is labeled FAST in the center and UP and DOWN. The other is labeled SLOW in the center and UP and DOWN. There are two methods that can be used to set door width. One is used for automatically stopping at the standard 2 inch increments and at your pre-set door undercut. The other method is used to set the machine for any door width between 1-6 and 4-0 by reading the door width scale, see figure 2.1. Move the top section in the direction needed to obtain the correct setting by the FAST switch in either the UP or DOWN position. When you are approximately 1/2 inch to 1/4 inch below the desired door width, rotate the SLOW switch to the UP position and release it. The top section will go up slow and stop at the next door width . If you would like to do a special width door, rotate the FAST switch to either the UP or DOWN position, as necessary, and watch the scale until it is near the width you desire, then momentarily turn (or bump) the FAST switch until the scale reads the correct door width. Slow Door Width Adjustment Fast Door Width Adjustment FIG. 2.2 (Continued on page 21) 20 (Continued from page 20) 3. Pick up a door and turn it up on edge so that it can be sighted for straightness. If a bow is noticed, place the door on the infeed bed so that the bow is toward the machine (if possible). This way the bow will be away from the stop on the jamb when the door is closed. 4. Adjust the door width with the infeed bed control lever until the undercut reference marks align, see figure 2.3. FIG 2.3 5. Slide the door into the powerfeed system where it will be sized, beveled, and the corners sanded. To adjust the speed of the powerfeed wheel adjust the knob located in the operator control panel, see figure 3.4 on page 24. For light cuts and soft woods it can be set at the fastest speed, but should be reduced for heavier cuts and hard woods for performance. 6. If the next door to be processed is the same width as the door in the machine, sight it for straightness and then place it on the infeed bed in the “holding” position (leading end just under the first roller of the undercut reference assembly). 7. Place the jamb in the desired position on the jamb rack (right or left hand) by pushing the dado end against the appropriate jamb stop. 8. By this time the first door will be waiting in the drill section. Roll it against door stop at the same end as the jamb is located. While pressing the door against the main bar and the door stop, operate foot pedal to clamp door. (Continued on page 22) 21 (Continued from page 21) 9. Start the drill cycle by depressing the foot pedal (located to the right of the clamp pedal). Release the router carriage by pushing the button on the left side of the router carriage handle. CAUTION: the motor will automatically start when lowered to about 25 degrees. Lower the router carriage until the locating dog drops over the "top hinge" index block. The router bit should be between the door and jamb. 10. Clamp the router carriage to the door making sure that the jamb is in contact with the bottom of the router carriage. If the jamb requires moving up or down to compensate for different thickness jambs activate the control which is located on the front of the butt router. It is a two-way toggle switch, pushing it up raises the jamb and pushing it down lowers the jamb. When the jamb switch is released a brake is applied to hold it in the desired position. 11. Mortise the door and jamb. When the mortise is complete the router carriage should be stopped in the forward position over the door. This positions the router carriage so that when it is lifted it is captured in the appropriate position for lowering the next time. If you fail to do this, the next time the router carriage is lowered it will bring the bit down into the jamb. 12. Unclamp the carriage from the door and move the carriage to the next hinge location. It is not necessary to lift the router carriage to its full up and locked position between mortises. When the last mortise is completed, raise the carriage up until it locks. 13. Apply the hinges. 14. Unclamp the door and fold the jamb toward you. Roll the door until the lock bore is over the faceplate template, then activate the stop by pulling the faceplate handle out, away from the frame. This will activate the locating cone. 15. Push the door against the main bar, turn on the faceplate router and clamp the door by pushing the button in the faceplate router handle. The router will also plunge into the door after clamping. mortise the faceplate by following the template. 16. When the faceplate mortise is complete, push the button on the handle to stop the router and unclamps the door. 17. Remove it from the machine. 18. As the operator walks to their left for another door, grasp the door that is in "holding" and push it into the powerfeed. 22 3.1 REGULATOR SETTING Set the regulator at 90 psi. The black adjustment knob is located beneath the regulator gauge. Turn the knob clockwise to increase the regulated pressure or counter clockwise to reduce the pressure, see figure 3.1. 3.2 AIR TOOL LUBRICATOR SETTING Set the drop type lubricator so that two to four drops of oil is mixed with the air supply every minute. Adjustment is accomplished with the adjustment knob which is located next to the oil fill port. Turning the knob counter clockwise increases the oil drip rate. Observe the drip rate through the sight bulb on top of the lubricator. Over tightening the adjustment knob will damage the lubricator. FIG 3.1 23 3.3 ADJUSTMENT FOR DOOR WIDTH The top section can be raised or lowered to adjust the machine for any door width between 1-6 and 4-0. There are two methods for establishing door width, 1) index at 2" nominal widths, or, 2), stop the width adjustment at any increment using the width scale. The controls for making this adjustment, the “DOOR WIDTH” switches are located on the main control panel at the front of the machine. CAUTION: There should be no doors in the machine when this adjustment is made. 3.4 ADJUSTING FOR NOMINAL WIDTH DOORS To raise or lower the top section rotate the FAST switch to either the UP or DOWN position, as necessary, and watch the scale until you are approximately 1/4” below the width setting you want, then rotate the SLOW switch to the UP position and release it. The top section will go up slow and stop at the next door width. 3.5 ADJUSTING FOR ODD WIDTH DOORS Rotate the FAST switch to either the UP or DOWN position, as necessary, and watch the scale until it is near the width you desire, then momentarily turn (or bump) the FAST switch until the scale reads the correct door width. Slow Door Width Adjustment Fast Door Width Adjustment FIG 3.2 3.6 UNDERCUT The Magnum is designed to size and bevel doors to an exact width. Since many doors come from the manufacturer under nominal width, most pre-hung door manufacturers size all doors 1/16" to 3/16" under nominal size. A 1/8" undercut is most common. A 2'-0" door undercut 1/8" would be 23-7/8" from the hinge edge to the long point of the bevel. (Continued on page 25) 24 (Continued from page 24) The Magnum is adjustable for up to 3/8" undercut on a nominal sized door. For removing more than 3/16”, or in some harder wood stile doors, the powerfeed feed rate must be reduced. CAUTION: Never attempt to make large cuts at a fast powerfeed settings. If you are sizing doors that are considerably oversized and/or you are attempting a large undercut, the cutterhead must be SHARP and the cutterhead V-belt must be TIGHT. It is recommended that you use the slower powerfeed speed settings when large undercuts are made. The machine is factory set for a specific undercut of 1/8". The undercut scale, located on the side of the left width carriage, displays the undercut the machine is set for. Next to the scale is the undercut adjusting knob. When the undercut pointer aligns with the center "O" mark on the scale, the machine is set to bevel doors at nominal width (no undercut). To change the undercut to 1/8", loosen the locking knob and adjust the undercut assembly watching the pointer until it aligns with 1/8". Tighten the locking knob and check the alignment of the pointer and the 1/8" division below the "0" mark again. 3.7 BACKSET ADJUSTMENT FIG 3.3 25 OPERATOR CONTROL SETTINGS Slow Door Adjustment Emergency Stop Fast Door Adjustment Drill Motor Start/Stop Sizer & Sander Motor Start/Stop Powerfeed Speed Control Bit Change Retract/Extend Latch Drill Off/Short/Long Lock Drill Cycle Switch Off/Half/Thru FIG 3.4 The distance from the long point of the beveled edge to the center of the lock bore is referred to as backset. The machine is quickly and easily adjustable from 2-3/8” backset to 5”, or any measurement in between. The backset adjustment (located on top of the frame above the Lock Drill) is factory set so it will bottom out at 2-3/8” when turning the adjusting crank counterclockwise and stop at 5” when turning the crank clockwise. The backset can be set at any intermediate position and the lock drill's position will be maintained until the backset is changed. When doing any backset greater than 2-3/4” the latch drill stroke will have to be increased (Continued on page 27) 26 (Continued from page 26) to allow it enough travel to reach the lock bore hole, this is simply accomplished by the LATCH STROKE selector switch mounted on the operator control panel. As a rule, when the backset is changed to any setting other than 3”, the particle board drill back-up block will also have to be changed to prevent tear-out of the lock bore. 3.8 LOCK HEIGHT FIG 3.5 Lock height is defined as the distance from the center of the lock bore to the top of the door. On the Magnum, lock height is determined by a door stop that always references the top of the door to the Lock Drill and Latch Drill. The standard stop system is adjustable for all standard lock heights up to 8'-0" doors. In order to set the lock height follow the instructions below. 1. Set the door and jamb stop assembly on the index bar, but do not tighten the locking screws, refer to figure. 3.6. 2. Mark a door with a line at the desired lock height from the top of the door, i.e. 44” from the top for a 6-8 door. 3. Place the door in the door clamps with the top towards the stop you want to set. (Continued on page 28) 27 (Continued from page 27) 4. Position the door so that you can see the line centered in the back-up block lock bore hole, then clamp the door. Norfield recommends that you draw a line on the back up block in the center bottom of the hole to increase accuracy of this step. 5. Position the door stop assembly against the top of the door, without moving the stop and tighten the locking screws. 6. With the drill motors OFF and the door clamped, step on the cycle start foot pedal, when the lock drill bit contacts the door unclamp the door, this will return and reset the drill cycle. Remove the door from the machine and measure from the top of the door to the drill mark left on the door by the bit. 7. Adjust the door stop screw until you have achieved 44" (or the dimension you desire). 3.9 HEADER CLEARANCE FIG 3.6 (Continued on page 29) 28 (Continued from page 28) Header clearance is the gap between the top of the door and the head jamb, usually 1/16" to 1/8". Normally this dimension will not require changing. However, if an adjustment is necessary check the lock height first and adjust the jamb stop only if the lock height is correct. Adjusting the door stop to change header clearance will result in an incorrect lock height. FIG 3.7 ENGAGE THE EMERGENCY STOP OR THE BIT CHANGE SWITCH PRIOR TO ATTEMPTING ANY BIT CHANGES BE SURE ALL TOOLS HAVE COME TO COMPLETE STOP. 3.10 CHANGING THE LOCK BIT The lock drill bit can be changed from the front of the machine. Activate the front panel switch labeled “BIT CHANGE”. Open the drill cover. The lock drill chuck is located on the lock drill motor shaft. There are two set screws in the forward half of this chuck which secure the lock drill bit in place. Loosen these two set screws to remove the drill bit. (Continued on page 30) 29 (Continued from page 29) The replacement bit must have a flat ground on the shank otherwise it will not fit into the chuck. There is a pin inside the chuck to prevent the bit from turning in the chuck in the event the set screws are not properly tightened. When inserting a bit, rotate it until the flat aligns with the pin and push the bit into the chuck until it bottoms out in the chuck. This will permit the door to pass without striking the drill tip and will allow proper chip clearance between the drill and the chip deflector plate just inside the main frame. Tighten the set screws securely. 3.11 CHANGING THE LATCH DRILL BIT Supplied standard for the latch drill of your machine is a "single fluted flat type" drill bit. To remove this bit use a adjustable wrench secured across its flats to keep it from turning while you use a 1-1/4” wrench on the flats on the latch drill chuck to break loose the tightened threads. The bit can then be unscrewed by hand. As an option a "double fluted twist type” drill bit is available. To remove it, it is necessary to insert a punch in the hole through the bit to keep it from turning, and then, just as with the "flat" type, use a 1-1/4” wrench on the drill chuck shaft to break loose the tightened threads. When re-installing a bit use the appropriate method to snug the bit after hand tightening. 3.12 CHANGING OF LOCK BORE BACKUP BLOCK Each time the bit size or backset is changed the lock bore backup block must also be changed. The same block may be used not for 2-3/8” and 5” backset with each different bore size, but a separate block must be used when boring at 2-3/4” backset because the bores will overlap. NOTE: Backup blocks must be exactly 3/4” thick or latch drill centering will be changed. Backup blocks can be purchased from Norfield Tools & Supplies @ 1-800-824-6242. 3.13 SANDER ADJUSTMENT The sander is designed to relieve the sharp corners on the lock edge left by the sizer/ cutterhead. The adjustment for raising the sanding wheels is located just above the sander on the top side of the main frame. Turn the adjustment knob 1/4 turn each time there is an indication that the corners are too sharp. Do not attempt to use sanding wheels after they are worn smaller than 4" in diameter. Doing so will cause the sander wheels to lift the door and an uneven edge will result. (Continued on page 31) 30 3.14 CHANGING BUTT SPACING From time to time you may need to change your butt spacing on an existing index bar, or set up a new index bar. To accomplish this, the following procedure is suggested: FIG 3.8 1. If changing an existing index bar, use a metal scribe, mark the location of the index blocks when they are set for your standard spacing so you can accurately and quickly return them to standard. 2. Place the "non-standard" or “set-up” door in the machine, roll it to the proper door stop and clamp it. 3. Starting at the top of the door measure down the door edge and make a mark where the top of each butt is to be located. 4. Loosen the set screws in the router index blocks. (Continued on page 32) 31 (Continued from page 31) 5. Lower router carriage until the locating dog on the router carriage is over the index block nearest the top of the door, and the router carriage is resting on the door. 6. Slide router carriage back and forth until the applicable "butt reference line" on the door clamp bar is properly aligned with the mark on the door nearest the top of the door, see figure 3.8. 7. Move the door while holding the stop to tighten set screws in router index 8. block. Clamp router carriage to door and check to make sure that the lines are still aligned. Repeat process for other butts. 9. If frequent changes in butt spacing are made, we recommend the purchase of a second index bar with six index blocks and two door stops. The entire index bar can be quickly changed by releasing the locking clamp mechanism. 3.15 CHANGING SIZE OF MORTISE Referring to figure 3.9, when all three sets of the pendulum stops are in the path of stop screws the mortise will be 3-1/2” wide. As stops are rotated out of the path of the stop screws the mortise will increase to 4”, 4-1/2” and 5” wide. The distance of cut into the door and jamb is controlled by the stop turret, which can be rotated to change from 3-1/2” to 4-” butts. The turret stop screws will fine tune the depth of cut for each setting. The turret stop shown in figure 3.9 is routable for use with 3.5” or 4.0” butts and is so marked. If 4-1/2” or 5” butts are called out only occasionally, one set of stop screws on the turret stop can be readjusted, or if you have frequent occasion where 4-1/2” or 5” butts are called out, you will find it advantageous to purchase a second turret stop for this purpose. Like the stop system in Fig. 4-10 used for flat jambs, the turret stops can be easily interchanged without disturbing their settings. Different butts from different manufacturers vary slightly in width. This can be compensated for by adjusting stop screws. Also, if you sharpen your router bits the diameter of the bits will change and you will need to compensate for this by adjusting the stop screws. The use of the turret stop system is designed to "work" to the stop on the jamb and to the outside edge of the door, represented by the clamp plate that secures the router carriage to the door. The actual distance routed into the door will vary as the thickness of the door varies, and the actual distance routed into the jamb will vary as the reveal varies. This system has three basic advantages: It automatically compensates for different thickness doors and for jambs with varying reveals, it automatically compensates for (Continued on page 33) 32 (Continued from page 32) crooked jambs and it allows the operator to always maintain an exact clearance between the door and the stop on the jamb when the door is closed. FIG 3.9 3.16 ROUTING FLAT JAMBS When mortising flat jambs (jambs with no stop) the stop system shown in figure 3.10 is used to control the movement of the router in the transverse direction (across the hinge pin). The “Stop Dog” is rotated to the down position, this tab will be positioned between the door and jamb. By adjusting the stop screws the distance of mortise into the door and into the (Continued on page 34) 33 (Continued from page 33) jamb can be precisely controlled. This stop system is generally used for 3-1/2” butts only. If you have need to mortise for 4” butts on jambs with no stops, it is recommended you purchase an extra Flat Jamb Stop Assembly and set it for 4” butts. The two assemblies are quickly and easily interchangeable and the individual settings are not disturbed by removing and replacing them on the router carriage. FIG 3.10 3.17 CHANGING THE MORTISE DEPTH If the butts you use vary in thickness this can be compensated for by adjusting the depth of the router. Move the adjustable scale clockwise so that 0 on the scale is located exactly above the pointer on the base. Open the locking lever and turn the depth adjustment ring Locking Clamp Adjustment Ring FIG 3.11 (Continued on page 35) 34 (Continued from page 34) until the bit is at the desired depth. Turning the ring clockwise raises the cutting head while turning it counterclockwise lowers the cutting head. Turn the depth adjustment ring along with the adjustable scale to the desired depth. Note that each mark on the adjustable scale represents a depth change of 1/64" or .015" (.4mm). Close the locking lever. 35 36 This section describes special adjustments that may become necessary during the life of this machine. This includes those adjustments that will be necessary to make after certain parts are replaced. 4.1 INFEED BED The infeed bed must be parallel with the outfeed bed. The combination of the four components - infeed bed, cutterhead, outfeed bed, and outfeed rollers add up to a bed-type planner (or Jointer). If the infeed bed is parallel to the outfeed bed, but 1/8” under the outfeed bed, then you would remove 1/8" from the door at the high point of the bevel. The Outfeed bed is not adjustable. The Infeed bed, Cutterhead & Outfeed rollers are all adjusted in relation to the Outfeed bed. FIG 4.1 37 (Continued from page 37) Should you experience problems in cutting a straight edge on your doors we urge you to proceed with caution in your efforts to correct the problem. Ninety-nine percent of all problems in this area arise from the cutterhead rather than the Infeed Bed, outfeed bed or rollers. If you have attempted to solve your problem and you are completely satisfied that the problem is not with the cutterhead, then we suggest you call the factory before attempting to adjust the infeed bed. 4.2 ADJUSTMENT OF INFEED BED CLUTCH The clutch is located on the infeed bed pivot shaft inside the frame. The purpose of this clutch is to provide the proper amount of friction for the infeed bed handle so that it can be adjusted and will stay where you leave it. As the friction discs wear after long periods of service, a lessening of the friction may be noticed. When this occurs, a slight adjustment of the clutch is necessary. 1. Back off all tension screws at least three turns. 2. Loosen the adjusting nut set screw at least six turns. 3. Reset the adjusting nut. Turn clockwise for more torque or counterclockwise for less. One valley at a time. 4. Tighten the adjusting nut set screw in nearest spline notch. Do not tighten set screw on threads of hub. 5. Tighten the tension screws alternately and evenly until the heads bottom. Do not use washers under heads of these screws. 6. Check the friction on the infeed bed handle to see if it is too tight or to loose. If necessary, readjust until the proper tension is provided. FIG 4.2 4.3 OUTFEED ROLLER To the right of the outfeed bed, facing the machine, there are four rollers called outfeed rollers. They are positioned at the factory and are referenced to the outfeed bed. It is not likely they will ever get out of adjustment. Adjusting these rollers in the field by other than factory trained service people is not recommended. If there is a problem in obtaining a straight edge on the door the problem is most likely the cutterhead or possibly the Infeed Bed. For instance, if an undersized cutterhead is placed on the machine or if the Infeed Bed is tilted forward, the door will “bump” the outfeed bed and cause a "nick" in the door edge 11” from the front end of the door. Investigate the cutterhead and/or infeed bed and make adjustments. (Continued on page 39) 38 (Continued from page 38) After years of use, the outfeed rollers will wear to the point that they will need to be replaced. Their useful life can be extended by keeping them and the shafts they turn on, clean at all times and by reversing them on the shafts periodically. This is practical since only the high point of the bevel actually rolls on the rollers. 4.4 CUTTERHEAD The “effective cutting height” of the cutterhead is a term used to describe the location of the long point of the bevel on the door as it is being sized. The long point of the bevel is always towards the machine and the door slides against a permanent reference, or fence. It doesn’t matter how thick the door is, the effective cutting height of the cutterhead remains constant, assuming the diameter of the cutterhead and the “set” of the blades remain constant. The relationship between the effective cutting height and the outfeed bed is extremely critical. THEY MUST BE THE SAME HEIGHT, or an uneven edge will result. If you change the cutterhead and the new cutterhead is smaller in diameter or if the blades are set differently, and a problem with the sized edge develops, you should determine what the problem is with the cutterhead and resolve it before making adjustments. Adjust the height of the cutterhead mandrel to the outfeed bed only as a last resort, first determine what has changed to create the problem. 4.5 CUTTERHEAD HEIGHT Before beginning any service repairs, general maintenance, or adjustments you MUST follow proper Lockout Tag-Out procedures. OSHA regulation 1910.147 establishes a minimal lockout tag-out procedure to assist employers in development of their own procedures. Should the need arise to remove the cutterhead mandrel assembly from the machine to replace the bearings, or to install a new mandrel assembly. The following procedure is recommended, refer to figure 4-3. 1. Turn off all electrical power and lock and tag-out the machine 2. Remove cutterhead shroud, pulley and belt. 3. Loosen lower set screw (inside machine just under mandrel) one turn. 4. Remove 4 bolts that secure mandrel to frame. 5. Install a new mandrel (or mandrel with new bearings). 6. Moderately tighten 4 bolt that secure mandrel to frame. 7. Tighten bottom set screw. (Continued on page 40) 39 (Continued from page 39) 8. Tighten 4 bolts securely. 9. Replace cutterhead. 10. Place a beveled, straight-edge door on the outfeed bed. Pressing the door firmly against the machine, roll it to your left until the left end of the door is over the cutterhead. Using the pressure of the second powerfeed wheel to hold the door in place, rotate the cutterhead backwards. The cutter knives should touch the door, but still turn freely. If this condition does not exist, raise or lower cutterhead until you achieve this condition. 4.6 CUTTERHEAD REPLACEMENT The condition of the cutterhead should be inspected daily. The cutterhead knives are carbide which means that anything metallic, either in the door or stuck to it, will chip or actually break one or more knives. It is good practice never to put a door “edge down” on the floor as foreign particles (rocks, dirt, metal particles, screws, etc.) may be picked up by the edge of the door. A chip in the cutterhead will show up on the door as a ridge the entire length of the beveled edge. FIG 4.3 To replace the cutterhead: 1. Turn off all electrical power and lock and tag-out the machine . 2. Open the front cover to expose cutterhead and powerfeed wheels. 3. Remove locking pin from first powerfeed plate. (Continued on page 41) 40 (Continued from page 40) 4. Remove the cap on cutterhead vacuum shroud. 5. Using two wrenches, hold the mandrel shaft and loosen the cutterhead nut 6. (LH threads on mandrel shaft). 7. Remove dull cutterhead and replace or replace disposable insert blades. 8. Reinstall nut, vacuum cap, powerfeed plate locking pin. and close cover. 4.7 CUTTERHEAD MOTOR DRIVE BELT Your cutterhead motor is equipped with a motor base/belt tension device. Loosen the lock nuts securing the motor base to the rails (not screws that secure rails to frame) and turn the adjusting bolts clockwise to force the motor away from the cutterhead mandrel. Be careful to keep the motor drive pulley aligned with the mandrel pulley. After taking up the slack in the belt, tighten the lock nuts. Check for 1/4” deflection of the belt at center between the motor pulley and mandrel pulley. Use of a dull Cutterhead will shorten the life of the mandrel bearings, drive belt & the motor. 4.8 SANDER WHEELS REPLACEMENT 1. Turn off all electrical power and lock and tag-out the machine. 2. Open the powerfeed cover and the locking pin from the second powerfeed plate. 3. Use a punch to keep shaft from rotating while loosening the locking nut. 4. Note carefully the side of the sander wheel which has the abrasive and replace the new wheels one at a time. The two shafts turn toward each other so the wheel goes on the first shaft, the closer of the two shafts, with the abrasive at the top of the wheel toward the door. The second sander wheel goes on the rear shaft also with the abrasive toward the door Be careful not to loose the bushings. 5. Each wheel requires a bushing and a pair of 5/8” flat washers on either side of its hub. 6. Reinstall bushings, wheels, and nuts (NOTE: left-hand treads on the long shaft). (Continued on page 42) 41 (Continued from page 41) 7. Lower the sander with the knob on top of the machine until the wheel is just touching the opening in the frame. 8. Reinstall locking pin in powerfeed plate and close guard. 4.9 SANDER DRIVE BELT The sander wheels present no great load so the sander double V-belt need not be tight. In fact, if the belt is overly tight, the belt life is very short. Loosen the 3/8”-16 hex bolt and raise or lower the idler pulley mounting block until there is about 1” deflection of the belt on the nearly vertical section of the belt nearest the infeed end of the machine. Be careful not to miss-align the idler pulley as it is adjusted. Do not over adjust the sanding wheels, it will cause excessive wear, a light touch on the door edge is all that is required. 4.10 REPLACEMENT OF POWERFEED WHEELS Should the need arise to replace one or both powerfeed motors, scribe a line around the base of the motor to be replaced so the new motor can be mounted in the exact position of the original. This is important as the motors are “canted” at the factory so as to create enough downward pressure on the door to overcome the lifting action of the cutterhead and sanding wheels. Without this "cant" there is no assurance that the edge of the door will be straight. On the other hand, if the “cant” is too great, the door will be pulled down on the cutter assembly so much that the door will hit the outfeed bed, causing a poor edge on the door. 4.11 CENTERING OF THE LATCH DRILL IN THE DOOR If you process any doors with a 5” backset, then this adjustment, if required, should be made with the backset at 5”. Press door against Main Bar, roll it to door stop and clamp in the usual manner. Bore and drill for the lock and latch bolt. Measure the amount the latch bolt is off center in the door edge and the amount it is off center where it enters the lock bore. If the latch hole is off center more where it enters the door edge than where it enters the lock bore. The problem can usually be corrected by following these suggestions: 1. Turn off all electrical power to the machine and lock and tag-out. 2. Note the amount the latch hole is off center from the last door to be machined. 3. Measure and record the distance from the center of the latch drill to the main frame. Add or subtract step #2 measurement from this distance. (Continued on page 43) 42 (Continued from page 42) 4. Loosen the eight hex bolts, four on each side of the latch drill assembly that secure the assembly to the frame mounting brackets. 5. Move the entire latch drill assembly toward you or away from you to achieve the dimension you arrived at in step 3 above. The latch drill assembly can be moved in and out, and the parallel to the frame can be changed by moving the top or bottom unequally to correct the angle drilled into the door. 6. Tighten the hex bolts. 4.12 ALIGNING LOCK AND LATCH DRILLS Under normal operating conditions the lock and latch drills will remain properly aligned. However, should the machine (or in particular the lock drill) sustain a severe jar, the lock drill can become misalign. Also, should you remove the lock drill motor for repair or replacement the new or repaired motor will need to be realigned with the latch drill. Following is a suggested procedure: FIG. 4.4 1. Clamp door. 2. Cycle the lock and latch drills to bore a set of test holes in a door. 3. Remove the door and extend lines from the lock hole edge to the door edge with a square. 4. Measure from the lines drawn in step 3 to the latch hole. Measurement “A” should equal measurement “B”. (Continued on page 44) 43 (Continued from page 43) 5. If the bores are not aligned the latch bore can be adjusted by loosening the bolts that secure the assembly to the frame and moving slightly to the left or right as needed. Be sure to keep the motor at a right angle to the door. Then check the lock height from the door stop and adjust if necessary. FIG 4.5 (Continued on page 45) 44 (Continued from page 44) 4.13 ADJUSTMENT OF DRILL SENSORS - LOCK Under normal operating conditions the lock drill will remain properly adjusted for depth of cut. However, should the need arise for adjustment, the sensors on the cylinder will need to be moved. As shown in figure 4.6 below there are three sensors. The home sensor indicates that the lock drill has returned to its resting position. If it is not triggered the drill cycle will not start. The door pull sensor is used when the operator wants a pocket ,not a full bore, through the door. This may need adjustment if the depth of cut needs to be changed. The lock bore limit sensor may need adjustment if the cutter is not cutting completely through the door. To adjust these sensors all that is needed is a flat blade screwdriver. First loosen the machine screw then move the sensor along the cylinder as needed. Tighten down the screw when done. FIG 4.6 (Continued on page 46) 45 (Continued from page 45) 4.14 ADJUSTMENT OF DRILL SENSORS - LATCH Under normal operating conditions the latch drill will remain properly adjusted for depth of cut. However, should the need arise for adjustment, the sensors on the cylinder will need to be moved as was the case with the lock drill. As shown in figure 4.7 below there are three sensors. The home sensor indicates that the latch drill has returned to its resting position. If it is not triggered the drill cycle will not start. The short stroke sensor is used for certain backsets. This may need adjustment if the depth of cut needs to be changed. The lock bore limit sensor may need adjustment if the cutter is not cutting completely through the lock bore. To adjust these sensors all that is needed is a flat blade screwdriver. First loosen the machine screw then move the sensor along the cylinder as needed. Tighten down the screw when done. FIG 4.7 46 4.15 LATCH PLATE MORTISE CENTERING Centering the latch plate mortise in the edge of the door is accomplished by adjusting the nuts securing the template holder posts to the frame, see figure 4.8. Be sure to retain the 1/16” gap between the template holder and the door when adjusting the mortise centering. To center the latch mortise on the latch bore, the air cylinder that activates the alignment cone can be adjusted on its mounting bracket. Loosening the cylinder mounting bolts and shift the cylinder side to side (not at an angle) until the mortise is centered on the latch bore. Tighten the mounting bolts securely 4.16 LATCH PLATE DEPTH FIG 4.8 (Continued on page 48) 47 (Continued from page 47) There should be 1/16” clearance between the top of the template holder and the long point of the beveled edge of the door. To establish the vertical travel of the latch mortising assembly, lift the latch routing lever by activating the button in the handle (no door in the machine and with the motor switch off). Check to see that the base of the template guide on the control weldment does not touch the bottom surface of the template holder. If it does touch the template, the control weldment must be lowered slightly by loosening the shaft collars. When at rest, the template guide should now be touching at least 1/16” of the bottom of the template. After the template holder is set at the correct height and the vertical travel is correct, the depth of the actual mortise may be adjusted. To mortise deeper, loosen the micrometer and adjust the router up into the casting the amount needed and tighten the micrometer. If the mortise is too deep, use same procedure except lower the router. Always Disconnect the router motor electrically before removing it from the casting. FIG. 4.9 (Continued on page 49) 48 (Continued from page 48) 4.17 MAIN BAR Calibration Check The Main Bar is the rectangular long tube assembly that is affixed to the width carriage assemblies. It must be parallel to the outfeed rollers. To ascertain this, select a door that has just been sized and beveled, measure it to make sure it has no taper, check the scale on the machine to see if it reads the exact width of the door you just measured, and then place it on the outfeed rollers. Now, at each end of the door, measure from the hinge edge down to the main bar. This measurement should be 2-1/2” at each location. If the dimension of the door to the main bar are equal but are not 2-1/2”, the following procedure should be used: 1. Calculate the difference of error from 2-1/2” , as an example if the actual measurement is 2-7/16” the error would be 1/16”. 2. Move the door width scale pointer by the amount of the error, up for a measurement less than 2-1/2”, and down for a greater dimension. until you achieve the required 2-1/2”. After moving the scale you will need to re-set the door width using the elevator buttons. 3. Re-calibrate the pointer on the undercut scale by loosening the pointer and moving it to the correct reading. The reading of the scale should be the same as the undercut of the door sized. 4. The indicator lines on the undercut reference roller assembly may also need calibration, The red lines should align when the door is 2-1/2” above the main bar. If the dimension on the undercut scale is different than the measured door width, the following procedure should be used: 1. Re-calibrate the undercut scale by moving the pointer until it reads correctly, move just the pointer without adjusting the assembly up or down. 2. Re-calibrate the undercut reference roller indicator until you have the 2-1/2” dimension and the proper undercut, this may require repeating steps one and two several times. Set the undercut scale to read exactly what the door width is by moving the pointer. If the dimensions are not equal from the hinge edge of the door to the main bar, adjust the width carriage on the outfeed end (right side) by moving the torque tube gear up or down as required, an adjustment screw is provided at that location. 49 4.18 JAMB RACK ADJUSTMENT Angular Adjustment The jamb supports should be at an angle of 90 degrees from the face of the door. This can be checked with a framing square. To establish the correct angular orientation between the jamb and the door the jamb rack may be rotated. By loosening the jamb nut and turning the adjustment link (using the flats) see in figure 4.10 below. By shortening the link the jamb is tilted towards the door and by lengthening the link the jamb is tilted away from the door. Be FIG. 4.10 sure to check and adjust both ends of the jamb rack. Parallel Adjustment The jamb should be parallel to the top of the door for correct hinge pattern routing. This can be checked by raising the jamb lift to the correct height and checking the relationship of the door and jamb with a framing square set flat on the jamb and the top of the door. If adjustment is necessary, this can be accomplished by loosening the jamb nut, removing the clevis pin, and then rotating the clevis to either extend or retract the length between the cylinder and the link, see figure 4.11. This in turn will raise or lower the jamb rack and jamb to obtain parallelism. A combination of adjustment on both sides may be necessary. FIG 4.11 50 4.19 LEVELING THE ROUTER CARRIAGE In order that the router mortises to the same depth both in the door and in the jamb, it is necessary that the router carriage be level both before and after clamping it to the door. Before attempting to level the router carriage, though, you must ascertain that two conditions exist: → The hinge edge of the door is 2-1/2” above and parallel to the main bar, see figure 4.12. If one end of the main bar is low and the other end is high, the mortise will be deeper in the door at one end and deeper in the jamb at the other end. → A gap of 1/32” between the door clamp bar and the door exits when the carriage is resting unclamped on the door edge and the door is pressed against the main bar. If the gap is less than 1/32”, the clamp bar will strike the edge of the door as the carriage is being lowered. If it is greater than 1/32”, the action of the clamp cylinder will pull the plate and tram rollers forward causing the pivot point to lower and a deeper mortise in the jamb will result. If the gap is not 1/32”, loosen the four screws that secure the adjusting bolts to the plate and adjust the carriage by turning the adjusting bolts equally to attain a 1/32" gap. Retighten the screws. If the jamb reference bars do not rest flat on the door edge with the carriage down, the following procedure will correct this: FIG. 4.12 After checking the above conditions use the following procedure to correctly level the router carriage: 1. Make sure that your door edge is square. 2. Loosen the three tram rollers and raise or lower plate until the jamb reference bars are resting flat on the door edge. 3. Tighten the top center roller. (Continued on page 52) 51 (Continued from page 51) 4. Position and tighten the lower rollers, leaving a 1/32” gap between each of them and the bottom of the tram rail. This will permit the carriage to "rock", thus conforming to the door edge should the edge be slightly bowed. 5. Adjust the felt wipers to effectively wipe the top surface of the tram rail 4.20 CHANGING ROUTER BIT RADIUS If you change bit radius, i.e. 5/8” radius to 1/4” radius, you must also change the butt router travel stops. 1. WIDTH - Two sets of mounting holes are provided for the width stop mount. Simply move the block to the proper position by removing the two mounting bolts, see figure 5.13. 2. TRANSVERSE - Across the hinge pin travel, must also be changed by adjusting the turret stop screws, see figure 4.13. It may be necessary to change the length of the adjusting bolts or screws. If you change radii often, you will find it advantageous to purchase an extra stop turret and/or Flat Jamb Stop Assembly so quick changes can be make without disturbing settings. FIG 4.13 52 4.21 BUTT ROUTER CARRIAGE BUSHINGS The useful life of the bushings in your router carriage will depend upon how well the rods they slide on are kept clean. If any type of lubricant is used on the rods, the bushings will be short-lived. When the bushings do wear to the point where the carriage no longer makes an acceptable mortise, you may (1) replace the bushings yourself, (2) have them replaced at a machine shop, or (3) purchase a rebuilt router carriage from the factory. If you choose to install new bushings into the carriage yourself, you will need a press and two line reamers, one 1/2” and one 5/8”. To replace, press or drive the old bushing out FROM THE OPPOSITE END and press the new bushings in, taking care not to damage them. Once inserted, line ream each pair of bushings to fit the matching slide rod. Since most door shops do not normally have presses and line reamers, we would suggest you contact the factory for a replacement carriage, as the cost will, as a rule, not exceed the cost of taking your router carriage to a machine shop. Plus you save the down time. Contact Norfield’s Service Department for advice if you plan on changing the bushings yourself. 53 4.22 CHANGING THE BUTT ROUTER FROM 0 TO 3 ½ DEGREE. This will allow the Magnum to machine the hinge mortises flush with the beveled edge of the door. The jamb can be held and machined at the same angle. Simply install the 6 jamb riser wedges, item number 0001-741 which is included with standard machine. The wedges slip over the jamb risers on the Magnum jamb rack and are held in place by a thumbscrew on the side. The thin end of the wedge should point toward the operator. 1. Unplug the Butt Router motor, whenever you work on or make adjustments to the butt router assembly the router must be unplugged. 2. Lower the butt router assembly. 3. Press the butt router latch button and raise the butt router assembly slightly, to release the latch pin. Maintain pressure on the latch button while you lower the butt router assembly. 4. Unlock the pivot pins. 5. Located on each side of the butt router assembly are two pivot lock pins (see figure 4.14). Pull the pin out and rotate it 90°. With both pivot lock pins unlocked push down on the butt router handle. This will cause the pivot blocks to move up in their slots. Hold the handle down and rotate the pivot lock pins 90° and allow the pins to lock the pivot blocks in the up position. 6. To return the router to its normal position, simply reverse the procedure. Pivot Lock Pin Pivot Lock Pin FIG. 4.14 54 5.1 GENERAL MAINTENANCE Door machines work in an environment of endless sawdust. Sawdust is not only very abrasive when allowed to penetrate motors, bearings, etc., but it also contains pitch. Pitch clings to sliding surfaces and eventually coats the bearings. Mechanisms become “sticky” and, if not cleaned, soon become inoperable. To combat the effects of sawdust on your machine the following recommendations are made: 1. Using an air hose blow all motors and routers off 2-3 times daily. 2. Clean slide rods on router carriage and latch drill daily with a non-oil based solvent (Electrical/Electronic Grade Contact Cleaner), and wipe rods completely dry with clean dry cloth. DO NOT LUBRICATE! Any type of lubrication on these slide rods will merely collect more sawdust. Clean and wipe dry the slide rods on the lock and latch drills weekly. 3. Clean gears and gear racks on elevator mechanism daily. A good stiff brush is best, but an air hose is better than nothing. DO NOT LUBRICATE! Wipe vertical posts on elevator clean daily. 4. Once a month remove door edge rollers and clean the roller I.D. and shaft O.D. with a non-oil based solvent, electrical/electronic contact cleaner. Wipe dry, DO NOT LUBRICATE! 5. Inspect and clean weekly the two cam guides and rollers on the jamb rack These components are located on the backside of the jamb rack on opposite ends. First blow the cavities clean, then take a brush and clean any pitch left on the rollers and guides. 5.2 CUTTERHEAD When the blades of the Cutterhead become dull or damaged it will be necessary to replace them. Please keep the following three items in mind. 1) Each blade is reversible and can be used twice. 2) Only use the correct inserts for this cutterhead for proper operation, The replacement blades are available from Norfield Tools and Supplies. 3) The head turns in excess of 7000 RPM and any imbalance will result in severely shortening the life of the bearings in the cutterhead mandrel, in addition to giving a poor finish to the door edge. (Continued on page 56) 55 (Continued from page 55) Most local grinding services are not equipped to provide the proper sizing and balancing. Therefore, we urge owners not to send their cutterheads or knives for sharpening. Use only the correct replacement knives. Keep all cutting tools sharp. Dull cutterheads, router bits or drill bits will not only do shabby work, they shorten the life of essential parts of your machine. When changing router bits ALWAYS disconnect the router cord from the receptacle first. 5.3 ROUTER BITS Router bits will need to be sharp to provide a clean, well formed mortise. Check router bits once daily and replace if the router bit looks burnt or dull. 5.4 DRILLS Drill bits need to be kept sharp at all times Failure to do so will result in the use of additional electrical current and shorten motor and bearing life. Here again, we believe we can do a superior job in sharpening your drill bits and we solicit this work from you. 5.5 FILTERS The air filters on your machine are designed to further clean air that is not heavily laden with moisture or impurities. If excessive water or pipe scale, etc., is present in the air to the filters, the filters will clog up and pass through the excess water, etc. For this reason if you do not have an in-plant air cleaning system, we suggest you contact the Norfield Service Department or your local air system supplier for assistance in correcting this problem. Water present in air cylinders and valves will severely shorten their life by up to 90%! Check the air filters daily see figure 3.1. The drain on the pre-filter (particulate) is automatic, but still needs to be checked daily to make sure it is “dumping” all the water. The particulate air filter will require cleaning at intervals dependent on the quantity of impurities in your air supply. The secondary filter (coalescing) is designed to remove very small impurities and oils from the air. This filter must be replaced when the element appears discolored or dirty. NOTE: A DISCOLORED COALESCING FILTER INDICATES A POSSIBLE PROBLEM WITH THE UPSTREAM AIR SUPPLY 5.6 REGULATOR Set regulator at 90 PSI 56 5.7 AIR TOOL LUBRICATOR Set lubricator to drop (2-4) drop per minute, with one air tool running. This is not a critical adjustment, but excess oil in the air serves no useful purpose. Use 10 wt. turbine oil to refill the lubricator. Do not use hydraulic fluid, oil containing additives or any substance not recommended by Norfield as this may cause damage to the machine and possibly void your warranty. 5.8 CYLINDERS Keep cylinder shafts clean to prevent excess wear. As seals in all cylinders will take a “set” when not operating, cylinder manufacturers strongly recommend that all cylinders be cycled at least two times each morning before placing a door and jamb in the machine. This will allow the cylinder seals to regain natural sealing ability and will lengthen cylinder life considerably. 5.9 SANDER BELT Inspect the sander drive belt weekly for tightness, cracks or hard spots at the splice. When adjusting the tension of the belt it is important not to over tighten the sander double V-belt as this will severely shorten the life of the belt. 5.10 BEARINGS Inspect the bearings of the cutterhead and sander weekly. Check for noise, play, and smoothness of operation. 5.11 LUBRICATION OF BEARINGS AND BUSHINGS With the exception of adding oil to the Lubricator no lubrication is required. All bearings are pre-lubricated and sealed: All bushings are self-lubricating 'Nylatron' or 'Oilite'. Note: Bushing life will be lengthened by keeping slide rods clean. Never use oil, graphite or silicone spray on the bushings of any assembly of your machine to “free” it up. Any foreign substance such as those above will collect fine sawdust and dirt particles which will tend to wear the bushings very quickly. If any assembly is binding, and you have kept the mechanisms clean, the problem is most likely that the parts have become misaligned. 57 58 6.1 PREFACE The first portion of this section is to help familiarize you with the operation of the Magnum by briefly describing what actually happens (mechanically, pneumatically and electrically) when you “push the button”, refer to Figure 6.1 for additional assistance. The second and third portions of this section deals with troubleshooting the machine. 6.2 DRILL CYCLE SEQUENCE Before the drill cycle sequence can start, the operator must first depress the foot clamp pedal to clamp the door. The activation of the foot clamp pedal also enables the drill cycle pedal to operate. This is a safety feature: it prevents the operator from inadvertently ruining a door by attempting to drill it before it is clamped. To start the drill cycle, the operator presses the drill start foot pedal. If the latch drill is fully retracted and the latch drill home position sensor is on, the lock drill valve is then activated by the controller. When the lock drill stroke is far enough out to activate the lock drill return sensor the controller turns the lock drill valve off, and the lock drill returns. When the lock drill has returned the lock drill home position sensor is turned on which then enables the latch drill sensor valve to turn on supplying air to the latch drill cylinder and it begins its stroke. When the latch drill has extended to activate the latch drill return sensor the latch drill valve is turned off, returning the latch drill to its home position. Opening the clamps at any time during this cycle will immediately turn off the valve that is on, returning the drills to their home position and resetting the cycle to the off position. The flow control valve and controls the speed at which the cylinder retracts and extends meter when air is fed into either the lock drill or latch drills cylinders, the air escaping the cylinder. The setting of the lock drill flow control valve determines how fast the lock drill will bore through the door. Drilling time should be 4 seconds. If it is faster, there is danger of overloading the lock drill motor. On certain doors with hardwood drill blocks, a longer drilling time may be required. As the drill sequence occurs the output and input lights on the controller turn on and off as various actions occur, these lights can be a invaluable troubleshooting help. As an example, if you step on the cycle start pedal and the foot pedal light on the controller does not come on when the pedal is engaged, then the controller is not getting the start input, and the machine will not cycle, Taking a close look at the cycle start foot pedal switch is warranted. (Continued on page 60) 59 (Continued from page 59) To assist you in determining the cause of a problem when it occurs, we have labeled and identified all inputs and outputs of the controller modules. The labeling and lights should be clearly visible through the window on the operator control panel. Refer to figure 6.1 and 6.2 to clarify the nomenclature and location of the controller components. Label 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. Meaning CMI Controller Module Input CMO Controller Module Output EMI Expansion Module Input EMO Expansion Module Output Lock drill on/off .................................................................................Controller light CMI-0 (on when active) Latch Drill on/off ...............................................................................Controller light CMI-1 (on when active) Latch Home Sensor ............................................................................Controller light CMI-2 (on when Latch drill is down) Latch return Sensor ............................................................................Controller light CMI-3 (on when Latch drill is up) Lock Home Sensor .............................................................................Controller light CMI-4 (on when Lock drill is retracted) Lock Return Sensor............................................................................Controller light CMI-5 (on when Lock drill is extended) Clamp Pedal .......................................................................................Controller light CMI-6 (on when Clamp pedal is depressed) Cycle Pedal ........................................................................................Controller light CMI-7 (on when Cycle pedal is depressed) Width Index up ..................................................................................Controller light CMO-0 (on when Width Index is going up) Width Index Down .............................................................................Controller light CMO-1 (on when Width Index is going down) Width Index slow ...............................................................................Controller light CMO-2 (on when Width Index is going is slow) Buzzer ................................................................................................Controller light CMO-7 (on when Buzzer is sounding) FPR Button ........................................................................................Controller light EMI-0 (on when FPR button is depressed) FPR Sensor ........................................................................................Controller light EMI-1 (on when FPR is pulled out) Width Index up ..................................................................................Controller light EMI-2 (on when Fast or Slow held in up position) Width Index down..............................................................................Controller light EMI-3 (on when Fast or Slow held in down position) Width Slow ........................................................................................Controller light EMI-4 (on when Slow held in either position) UP Limit ............................................................................................Controller light EMI-5 (on when Width Index is full up) Down Limit ........................................................................................Controller light EMI-6 (on when Width Index is Full down) Width Index Sensor............................................................................Controller light EMI-7 (on when Width Index is on a size) Door Clamp........................................................................................Controller light EMO-0 (on when door is clamped) Lock Drill...........................................................................................Controller light EMO-1 (on when Lock Drill is drilling) Latch Drill .........................................................................................Controller light EMO-2 (on when Latch Drill is drilling) FPR Lift .............................................................................................Controller light EMO-3 (on when FPR is up) FPR Cone ...........................................................................................Controller light EMO-4 (on when FPR cone is extended) FPR Motor .........................................................................................Controller light EMO-7 (on when FPR motor is running) (Continued on page 62) 60 FIG. 6.1 CONTROLLER MODULE INPUT EXPANSION MODULE OUTPUT INPUT OUTPUT Lock On/Off 0 0 Width UP Latch Router Push Button 0 0 Door Clamp Latch On/Off 1 1 Width Down Latch Router Stop Single 1 1 Lock Drill Latch Home 2 2 Width Slow Width Up 2 2 Latch Drill Latch Return 3 3 Width Down 3 3 Face Plate Lift Lock Home 4 4 Width Slow 4 4 Face Plate Cone Lock Return 5 5 Up Limit 5 5 Clamp Pedal 6 Down Limit 6 6 Cycle Pedal 7 Width Sensor Increments 7 7 Width Buzzer FIG. 6.2 61 Face Plate Motor (Continued from page 60) As the controller turns functions on and off, output lights on the controller or expansion module turn on and off, the pneumatic control valves also have a indicator light that come on when they are activated. If the controller is providing an output the corresponding control valve light should be on. To assist in trouble shooting the following figure will identify which pneumatic control valve powers, which function on the machine. FIG. 6.3 6.3 WIDTH INDEX SPEED CONTROLLER The speed controller is located in the lower left corner of the main electrical panel. This unit controls the width index motor speeds (fast, slow, up and down). This unit is not serviceable. The speed controller is programmed at the factory with the right parameters for your magnum. If you should have any problems with the speed controller unit, a code will be displayed. Look through the small window on the main electrical panel and record the (Continued on page 63) 62 (Continued from page 62) code for future reference. This code will help in finding a possible problem with your magnum. After the code is recorded you can reset the speed controller by turning off the main disconnect switch for 5 seconds. Below is a list of possible error codes for the speed controller: 1. OC1 - OVER CURRENT SHUT DOWN (DURING ACCELERATION) 2. OC2 - OVER CURRENT SHUT DOWN (DURING CONSTANT SPEED) 3. OC3 - OVER CURRENT SHUTDOWN (DURING DECELERATION) 4. THM - CONTROLLER OVERHEATING OR MOTOR OVERLOAD 5. OLT - STALL PREVENTION 6. UV - INSUFFICIENT VOLTAGE WARNING (THIS ERROR IS SELF CORRECTING OPERATION WILL RETURN WHEN THE CORRECT VOLTAGE IS RESTORED) ! If a code is displayed other than the above, or if a code appears repeatedly. Call NORFIELD SERVICE for assistance. 63 Problem Beveled edge shows chatter marks Beveled edge shows step at 11 inches from end of door Possible Causes Solutions Cutterhead drive belt is loose. Tighten belt. Cutterhead is dull. Replace with sharp cutter head blades Bearings in cutterhead mandrel are worn out. Replace mandrel or bearing. Cutterhead is undersized. Replace knives. Cutterhead is too low Raise cutterhead mandrel Infeed bed is not parallel with outfeed bed. Contact factory for more information. Beveled edge is straight but door is tapered after sizing Contact factory for more information. Beveled edge is smooth but arched. Contact factory for more information. Beveled edge show snipe 2” - 3” from the end of the door. Main bar is stuck. Will not go up or down. Cutterhead is oversized Replace knives Cutterhead is too high. Lower cutterhead mandrel Infeed bed is not parallel with outfeed bed. Contact factory for suggestions Obstruction in carriage assemblies. Inspect entire carriage assemblies for screws or other foreign material. Sawdust between gear and gear racks. Clean sawdust out. Tension adjusting idlers on carriages need adjusting. Adjust idler gears for smooth movement of main bar. The upper / lower limit switch was triggered beyond normal. Press the e-stop and pull out Estop. Press the fast button momentarily in the opposite direction that you want the main bar to travel. Then push button for correct direction. 64 Problem Drill cycle will not start. Possible Cause Solutions Door is not clamped. Move door to proper stop and clamp door. Sawdust build up or other obstruction under latch drill preventing it from returning to “home” position. When latch drill fails to “bottom out”, the latch sensor fails to activate locking out drill cycle from starting. Depress E-stop to turn off electricity. Disconnect air. Remove sawdust or other obstruction. Position of the home sensor has changed on the latch or lock drill Reposition sensor so that when latch or lock drills are retracted the Lock drill return sensor has moved. Reposition lock drill return sensor Lock drill return sensor not functioning. Repair or replace. Motor overloaded. Push re-set button in electrical panel. Feed rate is set too fast. Adjust flow controls on lock drill cylinder. Lock drill drills all the way through door but will not return. Lock drill feeds part way through the door and motor stops running. Lock drill completed its cycle but latch drill will not start. Latch drill cycle is turned “OFF” on control panel. Turn switch to “ON”. “HOME” sensor on lock drill is not turning on. Check adjustment of sensor position. Latch drill power valve not functioning. Repair or replace. Latch drill starts to feed but hesitates Low air pressure. or stops completely as it is drilling the door. Dull drill bit. 65 90-100 PSI required. Replace with sharp bit. Problem Possible Cause Solutions Latch drill return sensor not operating. Adjust sensor and check for sensor input light on controller. Slide shafts dirty. Clean slide shafts as described in preventative maintenance. Slide shafts out of alignment. Depress E-stop to turn off electricity. Disconnect the air. Loosen hex bolt at top of one side slide shaft. Manually raise latch drill assembly until it tops out. Retighten hex bolt. If assembly has been jarred it may be necessary to loosen the hex bolts on both slide shafts raise assembly and tighten hex bolts. In this case you will need to make sure your latch hole is still centered. Air pressure too low. Air pressure must be maintained at 90 - 100 PSI. Latch drill feeds but will not return. Top return sensor on latch drill is set too low. Adjust sensor height. Drill too short. Replace drill bits. Bits that have been sharpened to where they are too short for 5” backset can still be used for shorter backsets. Slide shafts dirty. Clean slide shafts as described in preventative maintenance. Slide shafts out of alignment. Depress E-stop to turn off electricity. Disconnect the air. Loosen hex bolt at top of one side slide shaft. Manually raise latch drill assembly until it tops out. Retighten hex bolt. If assembly has been jarred it may be necessary to loosen the hex bolts on both slide shafts raise assembly and tighten hex bolts. In this case you will need to make sure your latch hole is still centered. Air pressure too low. Air pressure must be maintained at 90 - 100 PSI. Latch drill travel switch set in “short” position on control panel. Set switch to “long” position. Latch drill will not bore completely into lock bore for 5” backset. 66 Problem Latch drill not centered in door. Lock height is no longer correct. Possible Cause Clamp backup block is wrong thickness. Use good quality 3/4” thick particle board for making backup blocks. Missing or worn drill clamp pads. Replace clamp pads. Assembly has been jarred and is no longer aligned. See section 5 - 8 for alignment procedure. Door is not square. Contact door manufacturer Door stops have moved. Loosen the locking screws and reposition door stops. Lock motor may have moved on its base. Realign lock drill to latch drill. Door stops have moved. Loosen stop assembly and readjust door stops. Jamb end stops have moved. Loosen stop assembly and readjust jamb stops. Header clearance has changed. Undercut does not match scale readings. Butt spacing has changed. Butts will no longer fit into mortise Mortise is deeper in the door in than jamb. Faceplate mortise is not centered. Lock drill motor is consistently tripping reset. Solutions See adjustment procedures in Section 4. One or more index blocks have moved. Reset blocks and mark with metal scribe. We recommend you check Router bit undersized. Adjust stop bolts on side of router base to compensate for sharpening of router bits. CAUTION: If the router bit is much under size the hinge radius will not fit into the mortise even when the stops are adjusted to give the correct Jamb is not up against the bottom of the router carriage. Raise the jamb. Router carriage is not level when mortising. See adjustments in Section 5-16. Top edge of door and the jamb rack are not parallel. Make sure the door edge is 2-1/2” above the main bar at both ends of the door. Backup block is wrong thickness. Use good quality 3/4” thick particle board. Missing or worn drill clamp pads. Replace clamp pads. Template holder out of adjustment. See Section 5-12. Low line voltage at motor. Check voltage at motor. Motor drawing excess amperage. Repair or replace motor. Plunge speed is too fast. Slow plunge speed. Dull bit. Replace knives in bit. 67 Problem Possible Cause Solutions Latch drill only will not start. Reset tripped. Push reset button. Faceplate mortise not centered on latch bore. Alignment cone cylinder out of adjustment. Adjust cylinder position. See Section 5 - 12. Defective contact block. Replace. Defective relay coil. Replace. Tripped or broken overload relay. Reset or replace. Low voltage at motor. Check voltage at motor. Motor drawing excess amperage. Repair or replace motor. Plunge speed too fast. Slow plunge speed. Latch/lock “stop” pushbutton is not making contact. Replace contact block. Switch contacts of motor are not making contact. Repair or replace the contacts. E-stop button is depressed. Check E-stop. Defective E-stop contact block. Replace contact block. Circuit breaker tripped Check and reset breaker 3 phase motors will not start. Latch drill motor consistently tripping overload relay. Latch and lock motors start but will not run or run intermittently. No electrical functions operating at controller. Three phase motors tripping resets at Low voltage electrical service. random. Have supply voltage checked by utility company. None of the single phase motors will Circuit breaker tripped run. Reset breaker. Powerfeed motor (s) will not run. Powerfeed fuse is blown. Replace fuse Powerfeed switch is not making contact. Repair or replace switch contact block. Powerfeed motor (s) are burned out. Repair or replace motor (s). Powerfeed speed control defective. Repair or replace speed control. Pushbutton switch is not making contact. Replace contact block. Motor is burned out. Repair or replace motor. Defective relay. Repair or replace relay. Faceplate router switch is not making contact. Repair or replace switch. Faceplate router is defective Replace router head Circuit breaker tripped Reset or replace Defective relay. Repair or replace relay Mercury switch not making contact. Readjust or replace mercury switch. Switch in router head not making contact. Replace switch in router head. Width index motor will not run. Faceplate router motor will not run. Butt router automatic start will not run. 68 Phone: 800-824-6242 Web: www.norfield.com Parts Replacement Policy The following will explain Norfield Industries policy for handling warranty claims. Our "Limited Warranty" is stated below for your reference. Our warranty covers the replacement of defective parts; however, the labor to replace the parts on the machine is not included. Upon notification of a warranty claim, Norfield will either refer the customer to a regional repair facility or replacement parts will be shipped from the factory. Parts shipped from the factory will be invoiced to the customer's account until the warranty claim is verified. To obtain verification, the defective parts must be returned to Norfield within thirty (30) days from the date of the claim for inspection. Before returning the defective parts, please contact Norfield to obtain a "Return Material Authorization Number". All parts manufactured by Norfield and found to be defective will be given appropriate credit. All parts not manufactured by Norfield are covered by their respective manufacturer's warranty and will be sent to the original manufacturer for credit. When, and if, credit is issued to Norfield, we will in turn issue credit to your account. Limited Warranty Norfield warrants any and all such parts manufactured by them against defects in material or workmanship for a period of one-year from date of purchase. Norfield's liability under this warranty shall be limited to replacing free of charge, F.O.B. Chico, California, any parts proved to be defective within the period of the warranty. Norfield will not be responsible for transportation charges or consequential damages. Norfield will not in any case or under any circumstances be liable or responsible for any injuries to persons or property suffered as a result of the use or operation of the machine, or losses or costs resulting from any period of non-operation for any reason. Parts which are claimed to be defective, but show tangible evidence of abuse or negligence will not be replace on a no-charge basis. Norfield reserves the right, at its own discretion without notice and without making similar changes in machinery previously manufactured, to make changes in material, design, finish and/or specifications. Any changes, alteration or installation of additional equipment to this machine without first obtaining written consent from Norfield may void this warranty. Determination of the effect of any alteration on this warranty is left to the discretion of Norfield. Norfield makes no written or implied warranty with respect to electrical equipment, including motors or other purchased components used in the manufacture of the machine. All such parts are covered by their respective manufacturer's warranty. We do endeavor, at all times, to purchase only those components manufactured by responsible manufacturers which we have found to be reputable in their handling or warranties. Norfield expressly disclaim any warranty, expressed or implied, other than those which are expressly made in this limited warranty.