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On a Compact 1000 or a Compact 1250 electric motor, what would cause neither the K1 “Down” contactor, nor the K2 “Up” contactor to operate?

April 26, 2017cause compact contactor Electric motor K1 k2

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On a Compact 1000 or a Compact 1250 electric motor, what would cause neither the K1 “Down” contactor, nor the K2 “Up” contactor to operate?

1 Answer

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Either of the following could cause this symptom to happen: · S1, Emergency Stop Switch Element with #27 & #28 wires attached is bad (stuck open). · S5, Thermal Protection switch is bad (stuck open).