installation instructions for the sentex

INSTALLATION INSTRUCTIONS FOR THE LIFTMASTER
SL 1000-B1\X1 POWER FAIL OPERATION OPTION
Use this instruction sheet to install the Power Fail Operation Option in existing LiftMaster Gate Operators.
Please read and follow these instructions carefully to perform a proper installation.
A.
CHECK KIT CONTENTS FOR COMPLETENESS
The Power Fail Operation Option installation kit consists of the following items:
• DC motor assembly ( includes DC motor, support bracket and 2 1/2" pulley)
• 12V battery
• V belt (41")
• Battery support bracket assembly (includes bracket, PCB assembly and cable harness)
• Mounting hardware:
Motor: 1/4" bolt, split lock washer and hex nut (4 each), 1/4" flat washer(8 each)
Battery: 1/4" bolt, flat washer and kep-nut (2 each)
Please contact LiftMaster Customer Service if any damaged or missing parts are discovered.
B.
POWER FAIL OPERATION OPTION INSTALLATION (Refer to Figure 1 at the bottom of this page.)
1. Remove the gate operator cover to access the gate operator mechanism.
2. Remove the Lexan cover from the Control Box to access the gate operator board.
3. IMPORTANT: Turn off gate operator power switch.
4. Place DC motor assembly on top tray, aligning motor pulley with the AC motor and gearbox pulleys,
and motor mounting holes with those in top tray. Install four bolts and flat washers from above, and
four flat washers, split lock washers and hex nuts from below. Finger tighten only.
5. Place battery on top tray with battery terminals nearest to the Control Box, as shown below.
6. Connect the DC motor black wire (Motor -) to “Black” terminal (J5), and red wire (Motor +) to “Red”
terminal (J4), both located on the PCB assembly (see Figure 2).
7. Place the bracket over battery, aligning its holes with mounting holes on top tray. Install two bolts
and 2 flat washers from above and two kep-nuts from below and tighten.
8. Run the cable harness from the battery support bracket through the dome plug hole on the rear of
the Control Box, then push the cable harness bushing until it snaps into place in the hole.
9. Route the cable harness along the left side of the Control Box and plug its connector into the
“Battery I/O” connector at the bottom of the control board.
10. Loosen the four mounting nuts holding the AC motor in place, then lift up the motor and remove the
existing V belt from the motor and gearbox pulleys. Place new V belt over the three pulleys. Align
DC motor pulley, then securely tighten DC motor mounting bolts.
Figure 1. SL 1000-B1\X1 with option installed.
Rev C
Doc 6001205 (01-20261)
Page 1 of 3
11. Push AC motor down until sufficient belt tension has been achieved, then retighten nuts.
NOTE: Less than 20 lbs tension may cause belt slippage, and more than 28 lbs tension may
impede motor operation.
IMPORTANT NOTE
Perform the next step (battery hookup) with care. Interchanging battery wires will severely
damage the gate operator board.
13. Remove the tape from the battery terminals. Connect the black wire from the PCB assembly to the
negative battery terminal and the red wire to the positive battery terminal.
(C)
POWER FAIL OPERATION TEST
•
•
•
NOTES:
The following procedures require turning power to the gate operator off and on at its
dedicated circuit breaker. DO NOT shut off the Gate Operator Power switch, since this
will shut off everything, including the Power Fail Operation option.
Because the battery will not be fully charged at the time of the test, we strongly suggest
moving the gate only one foot when performing the power fail test.
In the following procedure, the SL 1000-B1 will be referred to as the "B1", and the
SL 1000-X1 will be referred to as the "X1".
1. A) On the X1, set Power Fail switch S2 (located right of keypad) to same position as S1.
B) On the B1, set Power Fail Switch S3 (located on middle of board) to same position as S2.
2. Turn on gate operator power switch.
3. Using the manual inputs, initiate gate opening, then stop the gate about one foot short of its fully
open position.
4. Shut off power to the gate operator. After one minute gate should fully open and stop at its limit.
5. Turn on power to the gate operator.
6. Set Power Fail switch (S2 on the X1, S3 on the B1) to the opposite position.
7. Using the manual inputs, initiate gate closing, then stop the gate about one foot short of its fully
closed position.
8. Shut off power to the gate operator. After one minute gate should fully close and stop at its limit.
9. Turn on power to the gate operator.
10. Set Power Fail switch (S2 on the X1, S3 on the B1) to the direction you desire the gate to move
after a power outage.
11. Reinstall the Lexan cover on the Control Box, then reinstall the gate operator cover.
Figure 2. Wiring.
Page 2 of 3
Doc 6001205 (01-20261)
Rev C
COPYRIGHT 2001
ALL RIGHTS RESERVED
This document is protected by copyright and may not be copied or adapted without the prior written
consent of LiftMaster. This documentation contains information proprietary to LiftMaster and such
information may not be distributed without the prior written consent of LiftMaster. The software and
firmware included in the LiftMaster product as they relate to this documentation are also protected by
copyright and contain information proprietary to LiftMaster.
FOR TECHNICAL SUPPORT
Call our toll free numbers:
(800) 323-2276
(800) 998-9197
Installation and service information is
available six days a week.
TO ORDER REPAIR PARTS
Call our toll free numbers:
(800) 528-2806
(800) 998-9197
Prepare to provide the following
information when ordering repair parts:
! Part Number
! Part Name
! Model Number