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Model KT-190 and KT-200 Pipe Thawing Units
Ridge Tool Company 9
3. Connect one end of the pigtail (Ridge Catalog #62812)
on the right lug of the left unit, and the other end on the
left lug of the right unit.
4. Attach pipe thawing leads to remaining lugs.
5. Place one clamp on either side of the frozen section of
pipe.
Making pipe connections before plug-
ging in unit prevents arcing between clamps and pipe.
6. Plug the units into outlets that are NOT on the same
circuit. (Protected by separate fuses).
Both thawing units must be plugged into
electrical outlets before switching unit ON. Failure to
follow the procedure can result in electrical shock.
7. With two units connected in series, seven power set-
tings are available with the KT-200 by using the
switches on both units. The combinations are AA,
AB, BB, BC, CC, CD, DD.
NOTE! A circuit will not be completed until the switch of
both units is in the ON position.
Figure 8 – Series Set-Up
Parallel Operation
Units arranged in parallel work best for larger pipes di-
ameters.
Figure 9 – Parallel Set-Up
1. Position units near frozen section of pipe.
2. Make sure units are unplugged and switches are in
the OFF position and cables are completely uncoiled.
3. Attach cables and clamps to lugs.
4. Place clamps on either side of the frozen section of
pipe.
Making pipe connections before plug-
ging in unit prevents arcing between clamp and pipe.
5. Plug units into outlets that are NOT on the same cir-
cuit. (protected by different fuses).
Both thawing units must be plugged into
electrical outlets before switching unit ON. Failure to fol-
low the procedure can result in electrical shock.
6. The power settings available are AA, BB, CC, and DD
with the KT-200.
NOTE! With both units on the same setting both KT-200
amp. meters should read approximately the
same. If this does not occur, turn both units OFF
and exchange the cables on one unit. The correct
polarity is achieved by the cable hook-up that pro-
duces the lowest amp. meter reading.
IMPORTANT: Failure to follow above set-up will result
in most current flowing through the ad-
jacent clamps and not the pipe.
Maintenance Instructions
WARNING
Make sure unit is unplugged from power source be-
fore performing maintenance or repairs.
Tool Maintenance
1. Replace damaged, frayed, broken or worn cables.
2. Periodically clean lugs with steel wool and emery
cloth.
3. Replace damaged, frayed, broken or worn cords.
4. Keep clamps dry and clean.
Tool Storage
Electrical equipment must be kept indoors
or well covered in rainy weather. Store the tool in a locked
area that is out of reach of children and people unfamiliar
with Pipe Thawing tools. This tool can cause serious injury
in the hands of untrained users.
Unit #1
Frozen Section
Frozen Section
Unit
#1
Unit #2
Unit
#2
WARNING
WARNING
WARNING
WARNING
WARNING