Troubleshooting. Grizzly G9956

SECTION 6: SERVICE

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.

To reduce the risk of serious personal injury or damage to the machine, any repairs not covered in this manual should only be performed by or with the assistance of qualified service personnel.

Troubleshooting

Motor & Electrical

Symptom

Machine does not start or a breaker trips.

Machine stalls or is underpowered.

Machine has vibration or noisy operation.

Possible Cause

1. Dead battery or out of range.

2. Power supply switched OFF or is at fault.

3. Wall circuit breaker tripped.

4. Circuit breaker on air filter tripped.

5. Wiring is open/has high resistance.

6. Receiver at fault.

7. Main switch or pull chain switch is at fault.

8. Motor at fault.

1. Run capacitor at fault.

2. Motor wired incorrectly.

3. Plug/receptacle at fault.

4. Motor bearings at fault.

5. Motor overheated.

6. Motor at fault.

1. Motor or component loose.

2. Motor fan rubbing on fan cover.

3. Motor bearings at fault.

Possible Solution

1. Replace battery ( Page 21); stay in signal range.

2. Ensure power supply is ON/has correct voltage.

3. Ensure circuit size is correct/replace weak breaker.

4. Reset air filter circuit breaker.

5. Check/fix broken, disconnected, or corroded wires.

6. Inspect/replace if faulty.

7. Replace faulty switch.

8. Test/repair/replace.

1. Test/repair/replace.

2. Wire motor correctly.

3. Test for good contacts/correct wiring.

4. Test/repair/replace.

5. Clean filters to reduce load on motor.

6. Test/repair/replace.

1. Inspect/replace damaged bolts/nuts, and re-tighten with thread locking fluid.

2. Fix/replace fan cover; replace loose/damaged fan.

3. Test by rotating shaft; rotational grinding/loose shaft requires bearing replacement.

Air Filter Operations

Symptom

Loud, repetitious noise, or excessive vibration coming from air filter.

Possible Cause

1. Air filter is not mounted properly and wobbles.

2. The motor mounting is loose.

3. Impeller is loose on the motor shaft, damaged or unbalanced.

Possible Solution

1. Stabilize the air filter.

2. Make sure all fasteners on the air filter are tight.

3. Unplug air filter, and inspect the impeller for dents, bends, loose fins. Replace the motor and impeller as a set if the motor shaft and the impeller hub is damaged.

4. Replace motor fan housing.

4. Motor fan housing is dented, causing the motor fan blade to hit the housing while spinning.

1. The primary or secondary filter are dirty.

1. Clean or replace the filters.

Air filter does not adequately collect dust; poor performance.

-20Model G9956 (Mfg. Since 8/15)