Troubleshooting Guide
Power Feed Problems
Troubleshooting Guide 60HDdoc081208 6-5
6
6.3 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.
See Section 6.4
for instructions.
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
condition and positively close cir-
cuit.
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.
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