GB BB3040 User Manual

Do no use bender blankets on wet
surfaces or if blankets are wet.

Always wear protective gloves (thermal

insulated)when handling bender
blankets and heated PVC pipe. Bender Blankets operate
at temperatures of 250oto 300o.

Note: Wait for blankets to cool. Store the blankets
carefully to avoid damage when not in use.

Important: Read the caution and identification labels
attached to each blanket.

Do not bend, fold or crush the bender
blankets. Each blanket tends to have a

natural curl which allows for rolling and storage.

PVC Bender Blankets are rated for PVC

conduit through schedule 40. Do not
attempt to use on other materials. Inner blanket
temperatures may exceed 300oF.

Cooling PVC pipe should be done while
wearing gloves and using cool, wet rags.

Do not touch the pipe with your bare skin.

Important: The entire length of the bender blanket must
be in contact with the pipe. Do not use for heating on
bent areas of pipe.

IMPORTANT: RECEIVING INSTRUCTIONS: Visually inspect all components for shipping damage. If any shipping
damage is found, notify carrier at once. Shipping damage is NOT covered by warranty.The carrier is responsible for
all repair or replacement costs resulting from damage in shipment.

Gardner

Bender

Instruction

Sheet

IMPORTANT USER SAFETY AND PROTECTION: In setting up systems to fit your operations, care must be taken to

select the proper components and design to insure appropriate integration with your operations and existing
equipment and that all safety measures have been taken to avoid the risk of personal injury and property damage
from your application or system.

GB GARDNER BENDER CANNOT BE HELD RESPONSIBLE FOR DAMAGE OR INJURY CAUSED BY UNSAFE
USE, MAINTENANCE OR APPLICATION OF ITS PRODUCTS. Please contact GB's technical service department

for assistance if you are in doubt as to the proper safety precautions essential to designing and setting up your
particular application.

PVC Bender

Blankets

BB5150, BB2030

BB3040

!

WARNING

!

WARNING

PVC Bender Blankets are used for making offset, kick
and 90obends on PVC conduit through schedule 40.
Three models of blankets are available to bend 1⁄2"
through 4" pipe. Smaller, 1⁄2" through 2" pipe, will bend to
90oin one bend. Larger sizes, 2" through 4", require a
series of smaller bends to reach a full 90o. See table “A”
for maximum bend angles in one bend.

Time required to heat pipe to bendable temperatures
will vary with air temperature, wind conditions and line
voltage. Typical warm-up times are shown in table “B”.
During warm-up nothing should touch the blanket
surfaces. Support PVC off the ground on each end.
Do not allow blanket to touch supports.

When bending pipe outdoors, plug both ends to prevent
wind from entering and cooling pipe. Wrap the blanket
around the pipe with the open edges on the bottom and
overlapped or butted together.

Support each PVC end off the ground. Temperatures
below 72

o

F. will lengthen heating time. Check pipe
flexibility every few minutes to determine when pipe is
soft enough to bend.

Bending

1

⁄2" through 11⁄2" PVC

1. Select pipe length and determine location for bend,
and degree of bend needed. Bending pipe on wood
sheets prevents rapid cool-down.

2. Open the blanket and place it around the pipe. Be sure
the exact area to be bent is covered. Very little heat is
conducted beyond the edge of the blanket. Position the
cord (thermostat end)on bottom of pipe.

3. Plug power cord in a 120V AC outlet. Wait 4 or 5
minutes, then check pipe flexibility by trying to bend it.
If pipe resists bending, leave blanket on for 2 or 3
minutes longer.When the pipe bends easily, remove
and unplug the blanket.

Wear protective gloves when handling
the blanket and PVC pipe.

Table B

Electrical Pipe Approximate

Pipe Size Required Support Warm-up Time

1

⁄2" through 11⁄2" 120V - 310 W Wood Blocks - each end 4 to 10 min.

2" 120V - 690 W Wood Blocks - each end 7 to 10 min.

3" 120V - 690 W Wood Blocks - each end 12 to 17 min.

3

1

⁄2" 120V - 1120 W Wood Blocks - each end 15 to 18 min.

4" 120V - 1120 W Wood Blocks - each end 18 to 22 min.

Note: To achieve optimum blanket life, remove blanket carefully by using metal tab to lift blanket. Allow blanket to

cool for 10 minutes before using again. Bender blankets are primarily designed as a custom bending tool, not as a
high production tool. Life cycles of 150 bends are average. Depending on how carefully the blankets are used and
handled, more or less cycles may result.

Table A

Blanket Pipe

Model No. Size Bend Angles

BB5150

1

⁄2" - 11⁄2"90

o

in one bend

BB2030 2" 90

o

in one bend

21⁄2" - 3" 45oin one bend

BB3040 3" 90oin one bend

31⁄2"60

o

in one bend

4" 30oin one bend

!

WARNING