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Model G0790 (Mfd. Since 9/15)
-27-
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.
Note: Please gather
the serial number and manufacture date of your machine before calling.
SECTION 7: SERVICE
Troubleshooting
Symptom Possible Cause Possible Solution
Motor will not run.
1. Switch disabling key removed.
2. No power to planer.
3. Machine circuit tripped.
4. Defective switch or loose wiring.
5. Carbon brushes are at fault.
1. Install disabling key.
2. Check power supply.
3. Turn planer OFF. Reset machine circuit
breaker (Page 4).
4. Verify all wire connections on switch/motor
are connected and tight.
5. Replace carbon brushes.
Motor overheats or operates at
limited RPM.
1. Motor overloaded during operation.
2. Carbon brushes worn or at fault.
1. Reduce cutting load; take lighter cuts.
2. Replace carbon brushes.
Motor stalls or shuts off during a cut. 1. Cut is too deep.
2. Machine circuit breaker tripped.
3. Short circuit in motor or loose
connections.
4. Power supply circuit breaker tripped
or fuse blown.
5. Carbon brushes worn or at fault.
1. Reduce depth-of-cut.
2. Turn planer OFF. Reset machine circuit
breaker (Page 4).
3. Repair or replace connections on motor
for loose or shorted terminals or worn
insulation.
4. Reset or replace fuse.
5. Replace carbon brushes.
Cutterhead slows or squeals when
cutting, especially on start-up.
1. Belt worn out.
2. Carbon brushes worn or at fault.
1. Replace belt (Page 29).
2. Replace carbon brushes.
Infeed/outfeed rollers not rotating. 1. Chain and sprockets are worn,
misadjusted, disconnected, or
broken.
1. Adjust chain and sprockets; replace if
necessary.
Vibration when running or cutting. 1. Knives are dull.
2. Damaged belt.
3. Loose or damaged cutterhead.
4. Worn cutterhead bearings.
1. Replace knives.
2. Replace belt (Page 29).
3. Tighten or replace cutterhead.
4. Check/replace cutterhead bearings.
Boards don't feed properly into
machine.
1. Knives are dull.
2. Feed rollers are dirty, worn, loose, or
misadjusted.
1. Replace knives (Page 27).
2. Clean feed rollers (Page 31). Examine
for wear, and ensure they are installed
securely and properly adjusted.