installation instruction #24e

Saint-Lazare, Québec Tel.: (450) 455-0961
Calmar, Alberta Tel.: (780) 985-3636
Rockledge, Florida Tel.: (321) 638-2364
INSTALLATION INSTRUCTION #24E
CanusaWrap™ HEAT SHRINK SLEEVE
STORAGE AND SAFETY GUIDELINES
To ensure maximum performance, store the product in a dry, ventilated area. Keep product in packaging and
avoid exposure of the product to direct sunlight, rain, snow, dust or other adverse environmental elements.
Avoid prolonged storage at temperature above 35 °C (95 °F) or below -20 °C (-4 °F). Product installation should
be done in accordance with local health and safety regulations.
INSTALLATION OF HEAT SHRINK SLEEVES
The sleeves supplied are adhesive bonded wrap around shrink sleeves lined with a thick layer of aggressive
hydrophobic adhesive. Wrap around sleeves are specifically designed for the sealing of thermally insulated
pipe joints and are particularly well suited for use on larger diameters. The sticky adhesives are designed to
wet-out and bond to polyethylene, urethane, etc. A separate closure seal is provided to protect the overlap from
being peeled back while in service. For installation at temperatures below 0 °C (32 °F), keep the sleeves in a
warm place (ex: in a truck) and remove immediately prior to installation. Use an appropriate sized torch for the
sleeve dimensions.
Equipment List
Urethane Foam Installation
1
2
Surface Preparation
3
SOLVENT
Propane tank, hose, torch & regulator
Appropriate tools for surface abrasion
Knife, roller, rags & approved solvent cleanser
Digital thermometer with suitable probe
Standard safety equipment; gloves, goggles, hard hat, etc.
4
With a solvent cleanser like rubbing alcohol or xylene,
clean the insulation jacket surface under and slightly
beyond the sealing area of the sleeve, on each side of
the cutback, to remove oil, grease or other
contaminants (the sealing area is the portion covered
by the heat shrink sleeve).
Install the urethane foam half shells as per the
instructions.
5
Using a medium grit paper (80), roughen the jacket
surface under and slightly beyond the sleeve
sealing area.
On pipes with solid casing, use a scraper to remove
any burrs from the edges of the casing.
6
Using a dry rag free of lint and grease, wipe clean the
roughened surface to remove any loose particles.
1
Flame Intensity & Torch Size
7
Diameter
<450 mm
(18 in)
Diameter
>450 mm
(18 in)
Use moderate flame
intensity for pre-heating
and shrinking.
Use moderate to high
flame intensity for preheating and shrinking.
Minimum Torch Size:
150,000 BTU/hr.
Minimum Torch Size:
300,000 BTU/hr.
Pre-Heat
8
Sleeve Installation
9
Using a propane torch, carefully warm the jacket under
the sleeve sealing area to approximately 50 °C (122 °F)
for PVC or 65 °C (149 °F) for other jackets. Use a
temperature measuring device to ensure the correct
temperature has been reached. Do not heat the
urethane foam or burn the jacket.
Put the closure strip where it will not be contaminated
by dirt or moisture. Remove sleeve from the bag, then
partially remove the release liner and gently heat the
underlap approximately 150 mm (6 in) from the edge.
10
11
12
Center the sleeve over the insulation joint ensuring an
equal overlap onto the jacket. Press the underlap
firmly into place.
Wrap the sleeve around the joint, removing the release
liner as it is wrapped. Gently heat the backing (1) and
the adhesive of the overlap (2). Ensure not to damage
the foam insulation during heating. Press the overlap
into place.
Remove the release liner from the closure strip. Center
the closure strip on the overlapping sleeve. Press
down firmly.
13
14
15
Gently heat the closure and pat it down with a gloved
hand. Repeating this procedure, move from one side to
the other. Smooth any wrinkles by gently working them
outward from the centre of the closure with a roller.
Beginning at the centre of the sleeve, heat
circumferentially around the pipe. Use broad strokes.
For insulation OD larger than 450 mm (18 in), two
torches are required and operators should work on
opposite sides of pipe.
Continue heating from the centre toward approximately
5 cm (2 in) from one end of the sleeve, then aim the
torch inwards (center) and continue heating the
remaining portion until recovery is complete.
16
17
18
In a similar manner, heat and shrink the other side.
Finish shrinking the sleeve with long horizontal strokes
over the entire surface to ensure a uniform bond.
Shrinking has been completed when the adhesive
begins to ooze at the sleeve edges all around the
circumference and the sleeve is in full contact with the
jacket. While the sleeve is still hot and soft, use a hand
roller to gently roll the sleeve surface and push any
trapped air up and out the sleeve, as shown above.
A shield can be used to protect jackets such as PVC.
Visually inspect the installed sleeve for the following:
• Sleeve is in full contact with the insulation/pipe
jacket.
• Adhesive flows beyond both sleeve edges.
• No cracks or holes in the sleeve backing.
BACKFILLING GUIDELINES:
After shrinking is complete, allow the sleeve to cool for two (2) hours prior to lowering and backfilling. To prevent
damage to the sleeve, use selected backfill material without sharp stones or large particles.
2
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