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TROUBLE POSSIBLE PROBLEM SOLUTION
Motor won't start or makes growling
noise
Very low voltage
Check power source
Check motor nameplate
Single Phased Check power source. Must have all three
phases.
Open motor leads Check continuity. Clean and tighten
Rotor or bearings locked Check shaft for freeness of rotation
Starter coil burned out Replace starter coil
Thermal overload relays tripped or
tripping
Incoming leads to incorrect terminals Correct lead terminal locations
Low voltage at motor terminals Improve power supply and/or increase line
size
Single Phased Check power source. Must have all three
phases.
Loose wires from fuses to starter/ from
overload to motor
Tighten wire connections
Incorrect amp setting Correct amp setting on overload
Excessive vibration Motor mounting Check alignment between motor and pump.
Be sure motor mounting is tight and solid.
Pump Disconnect pump from coupling and restart
motor. If vibration stops, the unbalance is in
the pump. Replace the pump.
Coupling Remove coupling and restart motor. If the
vibration stops, the unbalance is in the
coupling. Replace the coupling spider.
Motor If the unbalance does not stop after checking
the other possibilities above, the unbalance is
in the motor. Check the bearings.
Motor runs noisy Bad bearings Disconnect from pump coupling and check. If
noise does not stop, replace bearings.
Bad pump or coupler Disconnect from coupling and check
Pump makes noise Low oil level Add oil
Restricted intake pipe Flush the system. Clean intake pipe.
Pump makes noise (con’t) Defective bearing Replace pump
Motor and pump run but baler does
not run
Low oil level Add oil
Incorrect pump and motor rotation See Start Up and Testing section for checking
motor rotation.
Key sheared on pump or motor shaft Replace key and any damaged parts
Pump coupler separated or bad Replace couplers
Noise like stones in the pump -
usually intermittent
Air leak in suction system Replace O-ring on suction end of pump.
Check all connections for possible leaks.
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