RESTARTING A “STUCK” THREE-PHASE COMPRESSOR PROCEDURE

StepExpected Result/Action
25. Turn power off. Use the capacitor discharge tool (Figure SP-8-6) to discharge
any capacitors in the unit. Locate and tag the wires connected to the
compressor motor terminals as shown in Figure SP-9-22, View A. (Refer to
the unit wiring diagram.)
Leads connected to the compressor terminals are identified.
26. Disconnect the wiring connected to any two of the compressor terminals.
Reconnect these two wires as shown in Figure SP-9-22, View B, so that two
legs of the three-phase input power are reversed.
Wiring (leads) connected to any two compressor terminals are reversed.
Turn on the unit power.Compressor starts as a result of the phase reversal. Proceed to step 28.
28. Turn power off. Use the capacitor discharge tool (Figure SP-8-6) to discharge
any capacitors in the unit. Reconnect the two wires interchanged in step 26 to
their original connection points (refer to the unit wiring diagram).
Compressor is wired according to the unit wiring diagram.

pic1 14 RESTARTING A STUCK THREE PHASE COMPRESSOR PROCEDURE


Categories: Service Procedures | Leave a comment