How to troubleshoot a crane starter motor fault?

How to troubleshoot a crane starter motor fault?

Troubleshoot a crane starter motor fault:

Step-1: Look for loose connections, burn marks, or broken components.

Step-2: Use a multimeter to check incoming voltage and phase availability.

Step-3: Check for blown fuses or tripped breakers in the starting panel.

Step-4: Examine contactor contacts for wear and carbon accumulation.

Step-5: Reset if tripped & check for overload circumstances.

Step-6: Test the continuity of the control voltage, pushbuttons, and auxiliary contacts.

Step-7: Check insulating resistance, winding continuity & earth faults.

Follow lockout/tagout (LOTO) safety procedures before inspecting or servicing.

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