Grizzly G0767, Руководство пользователя

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Model G0767 (Mfd. Since 1/14)
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.
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 breaker
trips. 1. Emergency Stop button engaged/at fault.
2. Power supply switched
OFF or at fault.
3. Motor connection wired incorrectly.
4. Thermal overload relay has tripped.
5. Power supply fuse/circuit breaker is blown/
tripped.
6. Contactor not getting energized or has
burnt contacts.
7. Wiring is open/has high resistance.
8. Motor at fault.
1. Rotate clockwise until it pops out/replace.
2. Ensure power supply is switched
ON; ensure power
supply has correct voltage.
3. Correct motor wiring connections ( Page 34).
4. Disconnect machine from power, turn amperage
dial on thermal overload relay to a higher setting.
5. Ensure power supply circuit size is adequate for this
machine ( Page 10); replace weak breaker.
6. Test for power on all legs and contactor operation.
Replace if faulty.
7. Check for broken wires or disconnected/corroded
connection, and repair/replace as necessary.
8. Test/repair/replace.
Machine stalls or is
overloaded. 1. Feed rate too fast.
2. Motor connection wired incorrectly.
3. Motor bearings at fault.
4. Machine undersized for task.
5. Contactor not getting energized/has burnt
contacts.
6. Motor has overheated.
7. Motor at fault.
1. Reduce feed rate.
2. Correct motor wiring connections (
Page 34).
3. Test by rotating motor shaft; rotational grinding/
loose shaft requires bearing replacement.
4. Use new abrasive belt with appropriate grit; reduce
feed rate.
5. Test for power on all legs and contactor operation.
Replace if faulty.
6. Clean off motor, let cool, and reduce workload.
7. Test/repair/replace.
Loud repetitious
noise coming from
machine. 1. Motor mounting loose.
2. Motor fan hitting cover.
3. Abrasive belt torn.
1. Retighten motor mount fasteners.
2. Repair/replace motor fan; remove any dents in
cover.
3. Replace abrasive belt ( Page 21).
Abrasive belt stops
rotating under load. 1. Abrasive belt not properly tensioned.
2. Feed rate too fast. 1. Properly tension abrasive belt ( Page 21).
2. Reduce feed rate.
Abrasive belt tracks
to one side under
load. 1. Abrasive belt tracking not properly set.
2. Abrasive belt not properly tensioned. 1. Properly set abrasive belt tracking (
Page 23).
2. Properly tension abrasive belt ( Page 21).
Abrasive belt
excessively worn in
one spot. 1. Tube not moved across face of abrasive
belt during operation.
1. Use traverse crank to evenly move tube across face
of abrasive belt during operation.
Tube has burn
marks at notch. 1. Abrasive belt worn/not correct grit for task.
2. Feed rate too fast. 1. Use new abrasive belt with appropriate grit.
2. Reduce feed rate.
Notch not centered
on tube. 1. Profile roller not even with center of tube. 1. Adjust profile roller height (
Page 31).