Current Tools 441 Instruction Manual

CURRENT TOOLS • P. O. BOX 17026 GREENVILLE, SC 29606
800.230.5421 or 864.721-4230 • FAX [phone]
www.currenttools.com
Model 441 – ½" to 1½" PVC Conduit
Model 442 – 2" to 3" PVC Conduit
Model 443 – 3½" to 4" PVC Conduit
Operating and Safety Manual
This manual is free of charge. All personnel who use this PVC Heating Blanket should have a copy of
this manual and read and understand its contents. To obtain a copy, call, write to the address below,
or visit our website. All information, specifications and product designs may change due to design
improvements or updates and are subject to change without notice. Current Tools does not assume
any liability for damages resulting from misuse or incorrect application of its products.
Read and understand this material before using
this PVC Heating Blanket. Failure to understand
how to safely use this unit may result in serious
injury or death.
11/15
Current Tools™PVC Heating Blankets
for heating schedule 20 through schedule 80 PVC conduit

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TABLE OF CONTENTS
Safety Alerts .............................................. 2
Important Safety Information ................................ 3
Specifications ............................................. 4
Operating Instructions.....................................4-5
Extension Cord Information ................................. 5
Heating Times............................................. 6
SAFETY ALERTS
Safety Alert
Symbol
THIS SAFETY SYMBOL is used to call your attention to instructions
that concern your personal safety. It means: ATTENTION! BE
AWARE! THIS IS AN IMPORTANT SAFETY INSTRUCTION!
Read, understand and follow these safety instructions. Failure to
follow these safety instructions may result in injury or death.
DANGER
WARNING
CAUTION
Immediate hazards which, if not avoided, WILL result in serious personal
injury or death.
Hazards or unsafe practices which, if not avoided, COULD result in serious
personal injury or death.
Hazards or unsafe practices which, if not avoided, COULD result in minor
personal injury or property damage.

RETAIN SAFETY INFORMATION
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DO NOT use in wet conditions or immerse blanket in liquids.
ALWAYS wear hand protection when operating this blanket and when
bending PVC conduit.
DO NOT use near flammable materials.
Keep sharp metal objects aways from blanket.
ALWAYS inspect blanket prior to use. DO NOT use blanket if it is worn,
torn or cut.
Blanket has no serviceable parts. DO NOT attempt to repair.
DO NOT leave blanket unattended. Unplug when not in use.
Use for heating PVC conduit only. DO NOT use for any other purpose.
ONLY use the blanket for the specific sizes noted in this manual. Heating
PVC conduit in the blanket that is smaller than the size specified will
damage the blanket and void the warranty.
ONLY operate when the full length of the blanket is wrapped around the
PVC conduit.
IMPORTANT SAFETY INFORMATION
Follow ALL safety information provided by the manufacturer.
WARNING
DANGER
CAUTION
This manual should be read and understood by all personnel who use this PVC Heating
Blanket. Failure to understand how to safely use this unit could result in injury or death.
This unit should only be used by qualified personnel.
WARNING
DANGER
CAUTION
WARNING
DANGER
CAUTION
WARNING
DANGER
CAUTION
WARNING
DANGER
CAUTION
WARNING
DANGER
CAUTION
WARNING
DANGER
CAUTION
WARNING
DANGER
CAUTION
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DANGER
CAUTION
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DANGER
CAUTION

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OPERATING INSTRUCTIONS
1. Check PVC Heating Blanket for cuts, tears, burns, exposed wires, frayed
edges or frayed cords. DO NOT use if any of these conditions exist.
Blanket has no serviceable parts.
2. Place the blanket under the PVC
conduit where the bend is to be
made. (See Figure 4a).
3. Begin to wrap the PVC Heating
Blanket around the conduit.
(See Figure 4b).
Continue to wrap the blanket
snugly around the PVC conduit
and secure the blanket in place
with the velcro straps. The blanket
should overlap the thermostat
housing. (See Figure 4c).
4. Next, with the blanket secure
around the PVC conduit, support
the PVC conduit as shown in
Figure 4c. Two 4"×4" pieces of
wood are recommended. This is
to prevent damage to the heating
blanket during the heating process.
5. Plug in the PVC Heating Blanket.
As the PVC conduit heats, you can
check for softness by pressing on
the sides of the blanket. The PVC
conduit is ready to bend when it
becomes very flexible. UNPLUG
THE PVC HEATING BLANKET and
unstrap the velcro straps.
SPECIFICATIONS
Model No. 441 442 443
Overall Dimensions 8½" ×18" 13½ × 30 16½" × 38"
Capacity – minimum ½" 2" 3½"
– maximum 1½" 3" 4"
Watts 300 800 1300
Volts 120 120 120
Amps 2.5 6.7 10.8
Figure 4a
Figure 4b
Figure 4c

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OPERATING INSTRUCTIONS — CONTINUED
6. To bend the flexible PVC conduit,
remove it from the PVC Heating
Blanket and place on a clean, flat
surface and hand bend to the
desired angle. The bend can be
set by allowing the PVC conduit to
cool, or you can decrease this time
by rubbing the bend with a sponge
or rag soaked in cool water.
(See Figure 5a). Remember to
keep all liquids away from the PVC
Heating Blanket.
NOTE: To help prevent flattening and crimping of the PVC conduit during
the bending process, Current Tools Plug Sets are recommended
for 2" and larger PVC conduit.
NOTE: For large numbers of repeat bends, a jig made of wood is
recommended.
EXTENSION CORD INFORMATION
We do not recommend using an extension cord over 100' in length.
See chart below for proper extension cord size.
Model # Extension cord wire size
441 18 AWG
442 18 AWG
443 16 AWG
Figure 5a

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HEATING TIMES – Estimated
Model # PVC Conduit
Size
Approximate
heating time (min)
Schedule 40
Approximate
heating time (min)
Schedule 80
441 1/2" 3 4½
441 3/4" 4 6
441 1" 5 ½6
441 1¼" 6 7
441 1½" 6 ½" 8
442 2" 8 8½
442 2½" 9 11
442 3" 11 12½
443 3½" 9 13
443 4" 10 13
NOTE: Heating time will vary based on many factors including, but not
limited to: wind conditions, surrounding temperature, temperature
of unheated PVC conduit, line voltage, etc.