Grizzly G7945 User Manual download pdf (Page 35)

G7945/G7946 Radial Drill Press

-33-

Review the troubleshooting and procedures in this section to fix your machine if a problem develops. 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

About Service

Symptom Possible Cause Possible Solution

Machine does not start or a breaker trips. 1. Plug or receptacle is at fault or wired

incorrectly.

2. Start capacitor is faulty.

3. Motor connection is wired incorrectly.

4. Power supply is faulty, or is switched

OFF.

5. Safety switch key is at fault.

6. ON/OFF switch is faulty.

7. Cable or wiring is open or has high

resistance.

8. Motor is at fault.

1. Test power plug and receptacle for

good contact and correct wiring.

2. Replace capacitor.

3. Correct motor wiring (see

Page 37).

4. Make sure all hot lines and grounds

are operational and have correct volt

age on all legs.

5. Install or replace safety key, or replace

switch assembly.

6. Replace faulty switch.

7. Troubleshoot wires for internal or

external breaks, check for discon

nected or corroded connections and

repair or replace wiring.

8. Test, repair or replace motor.

Machine stalls or is underpowered. 1. Incorrect spindle speed for task.

2. Machine is undersized for the task.

3. Bit or cutter is dull.

4. Low power supply voltage.

5. Belt is slipping.

6. Plug or receptacle is at fault.

7. Motor connection is wired incorrectly.

8. Pulley is slipping on shaft.

9. Bearings are at fault.

10. Motor has overheated.

11. Motor is at fault.

1. Decrease spindle speed.

2. Use smaller drill bits/cutters and

reduce the feed rate and spindle

speed.

3. Sharpen/replace bit or cutter.

4. Make sure hot lines and grounds are

operational w/correct voltage.

5. Replace bad belt, align pulleys, and

re-tension.

6. Test power plug and receptacle for

good contact and correct wiring.

7. Correct motor wiring (see

Page 37).

8. Replace loose pulley and shaft.

9. Rotate motor and spindle shaft for

noisy or burnt bearings, repair/replace

as required.

10. Clean inside/outside of motor, let cool,

and reduce workload on machine.

11. Test, repair or replace motor.

Troubleshooting

Motor & Electrical

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Grizzly G7945 User Manual Page 35

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