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12.7.8.3 Polyphase motor running single phase – Check for open circuit.
12.8 Controls
12.8.1 Blown Fuses
12.8.1.1 Short circuits
Check motor for short-circuited windings – Reset and inspect pump and motor for
proper operation.
12.8.1.2 Incorrect connections
Refer to wiring diagram
12.8.1.3 Improper power supply
Check voltage and motor nameplate requirements.
12.8.2 Starter overload tripped
Reset and inspect pump and motor for proper operation.
12.8.3 Motor fails to start
12.8.3.1 Make certain boiler level switch is functioning properly.
12.8.3.2 Check control circuit for continuity.
12.8.4 High / low alarm system not operating.
12.8.4 1 Relays defective.
12.8.4.2 High or low alarm switch not operating proper.
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