
Troubleshooting Guide
Electrical Problems
6
6-3
HD97doc041910
Troubleshooting Guide
6.2
Electrical Problems
WARNING!
Before performing service near moving parts
such as blades, pulleys, motors, belts and chains, first turn
the key switch to the OFF (#0) position and remove the key.
If the key is turned on and moving parts activated, serious
injury may result.
WARNING!
Disconnect and lockout power before perform-
ing any service to the electrical system. For battery-pow-
ered equipment, disconnect the negative battery terminal
cable. Failure to do so may result in injury and/or electrical
system damage
PROBLEM
CAUSE
SOLUTION
Up/down Excessively Slow.
Up/down belt loose.
Adjust belt to be as loose as
possible without slipping.
Vertical wear pads too tight.
Adjust pads.
Worn up/down motor or motor
brushes.
Replace up/down motor or
motor brushes.
Up/down Or Power Feed
Motors Do Not Work.
Worn/dirty contacts in drum
switch.
Replace switch or remove con-
trol panel cover and clean con-
tacts.
Bad key switch.
Replace key switch.
Circuit breaker.
Replace breaker.
Burned-out motor.
Replace motor.
Bad connection on battery
post or loose wire.
Check for loose wire or termi-
nal connections.
Up/Down Or Power Feed
Switches Remain Engaged
When Switch Is Released.
Worn or dirty contacts in drum
switch.
Manually move the power feed
or up/down switch back to
neutral or "off" position.
Replace drum switch or
remove control panel cover
and clean and lubricate con-
tacts NOTE: Use only contact
grease supplied by
Wood-Mizer.
Drum switch spring broken.
Manually move the power feed
or up/down switch back to
neutral or "off" position.
Replace drum switch spring.