Troubleshooting

SECTION 7: SERVICE

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.

Troubleshooting

Symptom

Possible Cause

Possible Solution

Machine does not

1.

Wall fuse/circuit breaker is blown/tripped.

1.

Ensure circuit size is correct and a short does not

start.

 

 

 

exist. Reset breaker or replace fuse.

 

2.

Plug at fault or wired incorrectly.

2.

Ensure plug is not damaged and is wired correctly.

 

3.

Motor wired incorrectly.

3.

Ensure motor wiring is correct.

 

4.

Wiring is open/has high resistance.

4.

Check for broken wires or disconnected/corroded

 

 

 

 

connections; repair/replace as necessary.

 

5.

Machine power switch is at fault.

5.

Ensure switch is wired correctly; replace if at fault.

 

6.

Motor is at fault.

6.

Test/repair/replace.

 

 

 

 

 

Machine stalls or is

1.

Feed rate too fast/cutting speed too slow.

1.

Adjust feed rate/cutting speed.

overloaded.

2.

Wrong cutter type.

2.

Use the correct cutter for the task.

 

3.

Machine is undersized for the task or tooling

3.

Use smaller or sharper tooling; reduce feed rate or

 

 

is incorrect for the task.

 

spindle speed; use cutting fluid if possible.

 

4.

Motor connection is wired incorrectly.

4.

Wire motor correctly for the intended voltage.

 

5.

Motor has overheated.

5.

Clean off motor, let cool, and reduce workload.

 

6.

Motor bearings are at fault.

6.

Test by rotating shaft; rotational grinding/loose shaft

 

 

 

 

requires bearing replacement.

 

t7.

Motor is at fault.

7.

Test/repair/replace motor.

 

 

 

 

 

Machine has

1.

Motor or machine component is loose.

1.

Inspect/replace stripped or damaged bolts/nuts, and

vibration or noisy

 

 

 

re-tighten with thread locking fluid.

operation.

2.

Excessive depth of cut.

2.

Decrease depth of cut.

 

3.

Cutter/tooling is loose.

3.

Make sure tooling is properly secured.

 

4.

Cutter is dull or at fault.

4.

Replace/resharpen cutter.

 

5.

Bit is chattering.

5.

Replace/sharpen bit; index bit to workpiece; use

 

 

 

 

appropriate feed rate and cutting RPM (Page 29).

 

6.

Quill is overextended.

6.

Retract quill, then lower headstock.

 

7.

Machine is incorrectly mounted or sits

7.

Tighten/replace mounting bolts in bench; relocate/

 

 

unevenly.

 

shim machine.

 

8.

Motor bearings are at fault.

8.

Test by rotating shaft; rotational grinding/loose shaft

 

 

 

 

requires bearing replacement.

 

 

 

 

 

Model G0705 (Mfg. since 09/09)

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Grizzly G0705 owner manual Service, Troubleshooting