Grizzly G0702 - Manual (Page 21)

Model g0702 (Mfg. since 1/12)
-19-
review the troubleshooting and procedures in this section to fix or adjust your machine if a problem devel-
ops. if you need replacement parts or you are unsure of your repair skills, then feel free to call our technical
Support at (570) 546-9663.
SECtION 7: SERvICE
troubleshooting
Motor & Electrical
Symptom possible Cause possible Solution
Machine does not
start. 1. Switch disabling key removed. 1. reinstall switch disabling key.
2. Break or short in wiring, loose connections,
plug or receptacle is corroded or miswired.
2. trace/replace broken or corroded wires, fix loose
connections, correct wiring.
3. power supply switched off/has incorrect
voltage.
3. Switch power supply on/verify voltage.
4. Blown fuse/tripped circuit breaker at main
panel.
4. Correct the cause of overload, then reset/replace
fuse or breaker.
5. Motor connection wired incorrectly. 5. Wire motor correctly (refer to inside junction box
cover or manual).
6. Motor on/oFF switch at fault. 6. replace switch.
7. Start capacitor has blown. 7. test/replace if at fault.
8. Centrifugal switch at fault. 8. adjust/replace centrifugal switch.
9. Motor at fault. 9. test for shorted windings or bad bearings; repair or
replace.
Machine has
excessive vibration
or noise. 1. Workpiece loose or incorrectly secured. 1. use correct holding fixture and re-clamp workpiece.
2. Motor fan rubbing on fan cover. 2. Fix/replace fan cover; replace loose or damaged fan.
3. Motor mounting loose. 3. tighten mounting bolts/nuts; use thread locking fluid.
4. lock lever is loose. 4. tighten the lock lever.
5. Machine incorrectly mounted to bench. 5. level/shim base; tighten/adjust mounting hardware
or feet.
6. Centrifugal switch out of adjustment; at fault. 6. adjust/replace centrifugal switch.
7. Motor bearings worn or damaged.
7. replace motor bearings or replace motor.
Machine stalls
or slows when
operating. 1. too much pressure when feeding workpiece 1. reduce pressure when feeding workpiece.
2. Workpiece is warped.
2. Straighten workpiece or use a different one.
3. Workpiece is incorrect for machine. 3. only sand wood and ensure moisture is below 20%.
4. Motor connection wired incorrectly. 4. review wiring diagram on motor cover; correct wire
connections.
5. Motor overheated. 5. let cool, clean motor, and reduce workload.
6. Centrifugal switch at fault. 6. adjust/replace centrifugal switch if available.
7. Motor at fault. 7. test, repair, or replace motor.