RIDGID kt-190 manual Tool Removal, Thawing Frozen Hydronic Systems Single Zone System

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.

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).

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.

WARNING Clamp tips are hot and can cause burns.

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.

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.

WARNING Making pipe connections before plug- 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).