Tool Removal; Thawing Frozen Hydronic Systems; Single Zone System - RIDGID KT-190 Operator's Manual

Model KT-190 and KT-200 Pipe Thawing Units
NOTE! This tool is equipped with a thermal overload for
added safety. If thawing for long periods of time at
maximum current, the unit may shut down auto-
matically. Unit will resume operations auto-
matically after approximately 3 minutes.

Tool Removal

1. When water lines have thawed, turn switch to the
OFF position and unplug power cord from the elec-
trical outlet.
2. Remove clamps from the pipe.
Clamp tips are hot and can cause burns.
WARNING
3. Allow clamps to cool before coiling cables and placing
the unit in storage. While the clamps are hot, keep
them away from combustible materials or articles
that can be damaged by heat.

Thawing Frozen Hydronic Systems

NOTE! Hydronic systems are harder to thaw due to the
lower pressure produced by the circulating pump
and the greater lengths of pipe required in a sin-
gle or multi-zone system.
Radiator
Figure 5 – Single Zone System
Radiator
Figure 6 – Single Zone System
Water
Circulating
Flow
Pump
Pipe Thawer
Pipe Thawer
Water
Circulating
Flow
Pump
Ridge Tool Company
NOTE! The electrical output current of both the KT-190
and KT-200 can take two paths. The shortest
distance between the clamps, or the long path
around the pipe loop. Therefore, in some sys-
tems it is required to break the pipe to eliminate
the short path (Figure 7).

Single Zone System

1. Circulating pump must be operating.
2. Make sure unit is unplugged and OFF and cables
are completely uncoiled.
3. Place one clamp near the furnace and the second
clamp next to a radiator.
Making pipe connections before plug-
WARNING
ging in unit prevents arcing between clamps and pipe.
4. Plug unit into a grounded 15 amp outlet, making
sure to position the power cord along the clear path
selected earlier.
5. Position switch to ON. (Up position on KT-190. Center
switch down to low and left switch to lower A position
on KT-200).
Radiator
Furnace
Radiator
Furnace
Radiator
Radiator
7