Section 7: Service; Troubleshooting - Grizzly T1242 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. Emergency Stop button engaged/not reset.
not start, or
2. Master power switch in "0" position.
power supply
3. Electrical cabinet open/safety switch at fault.
breaker
4. Incorrect power supply voltage or circuit size.
immediately
5. Power supply circuit breaker tripped or fuse
trips after
blown.
startup.
6. Start capacitor at fault.
7. Thermal overload relay has tripped.
8. Motor at fault.
Motor stalls 1. Magnetic switch contactor at fault (not
after running.
energized/has poor contacts).
2. Run capacitor at fault.
3. Motor bearings at fault.
4. Motor at fault.
Machine has 1. Machine incorrectly mounted to floor.
vibration or
2. Motor or component loose.
noisy operation.
3. Motor fan rubbing on fan cover.
4. Motor at fault.
Operations & Hydraulic System
Symptom Possible Cause
Ram will not 1. Pump not on.
move.
2. Pressure set too low.
3. Fluid level too low.
4. Obstruction in hydraulic line.
5. Motor at fault.
6. Motor coupling has failed.
7. Pump has seized.
8. Pressure valve at fault.
9. Hydraulic ram has failed.
-24-

Troubleshooting

Possible Solution
1. Rotate button head to reset.
2. Turn master power switch to "1" position.
3. Close/lock electrical cabinet door.
4. Ensure correct power supply voltage and circuit size.
5. Ensure circuit is sized correctly and free of shorts,
reset circuit breaker or replace fuse.
6. Test/replace.
7. Reset; contact tech support if relay frequently trips.
8. Test/repair/replace.
1. Test all legs for power/replace.
2. Test/replace.
3. Test/replace bearings.
4. Test/repair/replace.
1. Adjust feet, shim, or tighten mounting hardware.
2. Inspect/replace damaged bolts/nuts, and retighten with
thread-locking fluid.
3. Fix/replace fan cover; replace loose/damaged fan.
4. Test/repair/replace.
Possible Solution
1. Ensure START button has been pressed and WORK
LAMP light is on.
2. Adjust pressure valve to appropriate PSI for operation
(Page 21).
3. Check and fill tank to proper level.
4. Check hydraulic lines for obstructions.
5. Test/repair/replace.
6. Test/repair/replace.
7. Test/repair/replace.
8. Test/repair/replace.
9. Test/repair/replace.
Model T1242 (Mfd. Since 04/18)