ESAB Powercut 1600 Service Manual page 94

SECTION 4 DESCRIPTION Of OPERATION
4.12 Thermal Switch TS2 (055807892)
The thermal switch mounted on the output inductor is a normally closed bimetallic switch that will open if
the temperature of the Output inductor exceeds 176° F. The switch will remain open until the inductor cools
to 156° F.
The switch is physically attached to the heat sink and connected to the power board at J16. This switch
is electrically connected to the Main Control Board Microcontroller through the PCB2 J4/PCB1 J1 ribbon
cable.
Testing: In circuit, measure tab 1 to tab 2 = less than 1 ohm
Note: When replacing TS2 a thin, uniform coating of heat sink compound must be applied to the mounting
surfaces.
4.12
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