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Model G0602/G0752 (Mfg. Since 11/12)
-57-
Motor & Electrical
Review the troubleshooting and procedures in this section if a problem develops with your machine. If you
need replacement parts or additional help with a procedure, call our Technical Support at (570) 546-9663.
Note: Please gather the serial number and manufacture date of your machine before calling.
SECTION 7: SERVICE
Troubleshooting
Symptom Possible Cause Possible Solution
Machine does not
start or a circuit
breaker trips.
1. Emergency stop button engaged or at fault.
2. Spindle direction switch turned OFF or at
fault.
3. Start capacitor at fault.
4. Wall fuse/circuit breaker is blown/tripped;
short in electrical system; start-up load too
high for circuit.
5. Wiring is open/has high resistance.
6. Contactor not getting energized/has poor
contacts.
7. Motor connection wired wrong.
8. Motor spindle direction switch at fault.
9. Inverter/control box at fault (G0752 only).
10. Motor at fault.
1. Rotate button clockwise until it pops out to reset it
for operation; replace if not working properly.
2. Turn spindle direciton switch to FWD or REV.
Ensure switch has correct voltage. Replace if faulty.
3. Test/replace if faulty.
4. Verify circuit is rated for machine amp load;
troubleshoot and repair cause of overload; replace
weak breaker; find/repair electrical short.
5. Check for broken wires or disconnected/corroded
connections, and repair/replace as necessary.
6. Test for power on all legs and contactor operation.
Replace unit if faulty.
7. Correct motor wiring connections (Page 67).
8. Replace switch.
9. Inspect inverter/controller box; replace if faulty.
10. Test/repair/replace.
Loud, repetitious
noise coming from
lathe at or near the
motor.
1. Pulley set screws or keys are missing or
loose.
2. Motor fan is hitting the cover.
1. Inspect keys and set screws. Replace or tighten if
necessary.
2. Tighten fan, shim cover, or replace items.
Motor overheats. 1. Motor overloaded. 1. Allow motor to cool; reduce load on motor.
Motor is loud when
cutting, or bogs
down under load.
1. Excessive depth of cut or feed rate.
2. Spindle speed or feed rate wrong for
cutting operation.
3. Cutting tool is dull.
1. Decrease depth of cut or feed rate.
2. Refer to the feeds and speed charts in Machinery's
Handbook or a speeds and feeds calculator on the
internet.
3. Sharpen or replace the cutting tool.