Section 7: Service; Troubleshooting - Grizzly G0845P Owner's Manual

SECTION 7: SERVICE

Review the troubleshooting 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.
Motor & Electrical
Symptom Possible Cause
Machine does 1. Power turned off/disconnected.
not start, or 2. E-Stop Button(s) depressed/at fault.
power supply
breaker 3. Tripped circuit breaker.
immediately 4. Incorrect power supply voltage or circuit size.
trips after
startup. 5. Receptacle at fault/wired incorrectly.
6. Power supply circuit breaker tripped or fuse
blown.
7. Motor wires connected incorrectly.
8. ON/OFF switch at fault.
9. Shear switch at fault.
10. Blade guard limit switch at fault.
11. Foot pedal time-delay relay at fault.
12. Motor at fault.
Machine 1. Workpiece thickness exceeds shear capacity.
stalls or is
underpowered. 2. Blade gap not correct.
3. Gibs too tight.
4. Motor overheated, tripping machine circuit
breaker(s).
5. Machine undersized for task.
6. Belt(s) slipping.
Machine has 1. Motor or component loose.
vibration or
noisy operation. 2. V-belt(s) worn, loose.
3. Pulley(s) loose/misaligned.
4. Motor mount loose/broken.
5. Machine incorrectly mounted/resting on floor.
6. Motor fan rubbing on fan cover.
7. Motor bearings at fault.
Motor does 1. Motor electromagnetic brake at fault.
not stop when
jog button is
released.
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Troubleshooting

Possible Solution
1. Turn ON/OFF switch to ON.
2. Rotate E-Stop Button heads on control panel and
control pedestal to reset. Replace if at fault.
3. Re-set circuit breaker/ensure no shorts.
4. Ensure correct power supply voltage and circuit size
(Page 10).
5. Test for good contacts; correct the wiring.
6. Ensure circuit is sized correctly and free of shorts.
Reset circuit breaker or replace fuse.
7. Correct motor wiring connections (Page 49).
8. Inspect/replace.
9. Inspect/replace.
10. Inspect/replace.
11. Inspect/replace (Page 48).
12. Test/repair/replace.
1. Only use workpiece material that is within shear
capacity (Page 5).
2. Properly adjust blade gap (Page 38).
3. Properly adjust gibs (Page 43).
4. Clean motor/let cool, and reduce workload. Reset
breaker(s).
5. Use sharp blade (Page 41).
6. Tension/replace belt(s); ensure pulleys are aligned
(Page 46).
1. Inspect/replace damaged bolts/nuts, and re-tighten
with blue thread-locking fluid.
2. Inspect/replace belts with a new matched set
(Page 46).
3. Realign/replace shaft, pulley, set screw, and key.
4. Tighten/replace.
5. Tighten mounting bolts; relocate/shim machine
(Page 19).
6. Fix/replace fan cover; replace loose/damaged fan.
7. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
1. Inspect/replace.
Model G0845P (Mfd. Since 01/18)
ON
OFF