Troubleshooting Guide
Power Feed Problems
Troubleshooting Guide
HDdoc012020
4-4
4
4.3
Power Feed Problems
NOTE:
The power feed circuit board is equipped with LED lights to help determine if the circuit board or feed
rate switch are the cause of any feed problems you may encounter.
for instructions.
Loose connections at LED cir-
cuit board or alternator.
Check and tighten connections.
PROBLEM
CAUSE
SOLUTION
Power Feed Is Jerky At Low
Speeds Or Does Not Move
Until Speed Is Above Halfway
Mark.
Drum switch is dirty.
Clean drum switch and lubricate with
contact grease supplied by
Wood-Mizer.
Drum switch contacts are bad
Check that contacts are in good condi-
tion and positively close circuit.
Components are loose or wires are
broken.
Replace or repair PC board.
Power Feed Is Jerky When
Shaft Of Feed Rate Dial Is
Moved Back And Forth.
Variable speed switch is bad - perform
the variable speed switch test.
Replace variable speed switch.
Power Feed Is Jerky, But
Power Feed Motor Runs Prop-
erly At All Speeds.
Problem is mechanical.
Refer to the Mechanical Test.