TM 10-4610-215-24TM 08580A-24/2(2) Check across contacts of overload relay. It should read short. If reading is open, depress RESETlever. If reading is still open, replace overload relay.(3) Check between terminals (2) and (3) of auxiliary switch. It should read open.(4) Manually depress movable contact assembly into stationary contact assembly and hold in position.(5) Check between upper and lower contacts of stationary contact assembly. It should read short.(6) Check between terminals (2) and (3) of auxiliary switch. It should read short.(7) Release movable contact assembly.(8) Apply 110 Vat, 60 Hz across the terminals of the operating coil.(9) Movable contacts should actuate and be held in position in stationary contact block assembly.(10) Remove power from operating coil.3-18. HIGH-PRESSURE SWITCH.a. General.This paragraph describes the disassembly, repair, test, and calibration of the high-pressureswitch assembly.b. Removal.If necessary, remove the high-pressure switch assembly from the junction box in accordancewith paragraph 2-53.c. Dissassembly. (Figure 3-14)WARNINGROWPU piping and equipment can contain extremely highpressure during and after operation. If this pressure is notrelieved before working on these pipes or equipment, seriousinjury or death may occur. Be sure to open all drains and ventsbefore beginning any disassembly.NOTEPrior to disassembly, clean all external surfaces with a soft brushand a mild soap solution. Rinse with clean water and allow todry.3-69
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