Troubleshooting
Electrical Problems
4
4-3
HDSdoc021716
Troubleshooting
4.2
Electrical Problems
PROBLEM
CAUSE
SOLUTION
Up/down Excessively Slow.
Up/down rollers stuck.
Adjust rollers.
Up/down belt loose.
Adjust belt to be as loose as possible
without slipping
Thermal overload tripped
Reset.
Up/down Or Power Feed
Motors Do Not Work.
Worn/dirty contacts in drum switch.
Replace switch or remove control panel
cover and clean contacts.
Bad key switch.
Replace key switch.
Circuit breaker.
Reset breaker in control box (
See
Section 4.11
).
Burned-out motor.
Replace motor
Power Feed Motor Does Not
Work.
Sawdust buildup in the power feed pulleys.
Sawdust buildup puts mechanical bind on
power feed which causes thermal
overload.
Remove sawdust from pulleys
and operate normally. Reset overload
and operate normally.
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 position.
Replace drum switch or remove control
panel cover and clean and lubricate
contacts NOTE:
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.
Up/Down Or Power Feed
Motors Overheat And Loose
Power.
System overload or bind occurred.
Correct problem.
before restarting.
Normal operation factors exceeded (eg:
up/down control jockeyed excessively).
Allow motor to cool before restarting.
