Troubleshooting - Powermatic DS20 Operating Instructions And Parts Manual

Troubleshooting

Trouble Probable Cause
Machine will not Machine not connected to
start/restart or power source.
repeatedly trips
Fuse blown, or circuit
circuit breakers or
breaker tripped.
blows fuses.
Cord damaged.
Extension cord too light or
too long.
Building circuit breaker trips
or fuse blows.
Loose electrical
connections.
Switch or motor failure (how
to distinguish).
Motor failure.
On/Off switch failure.
(or Forward/Reverse switch
on 3 phase model).
Disc won't come Extension cord too light or
up to speed. too long.
Low (incoming) voltage.
Excessive bite, or feed
pressure too great.
Excessive Too much pressure being
replacement of used during cuts.
sanding paper.
Not using full width of belt.
Remedy
Verify machine is connected to power.
Replace fuse, or reset circuit breaker.
Replace cord.
Use adequate size extension cord.
Verify that sander is on a circuit of correct size. If
circuit size is correct, there is probably a loose
electrical lead.
Go through all the electrical connections on the
edge sander including motor connections, verifying
the tightness of each. Look for any signs of
electrical arcing which is a sure indicator of loose
connection or circuit overload.
If you have access to a voltmeter, you can
separate a switch failure from a motor failure by
first, verifying incoming voltage at 220+/-20 and
second, checking the voltage between switch and
motor at 220+/-20. If incoming voltage is incorrect,
you have a power supply problem. If voltage
between switch and motor is incorrect, you have a
switch problem. If voltage between switch and
motor is correct, you have a motor problem.
If electric motor is suspect, you have two options:
Have a qualified electrician test the motor for
function or remove the motor and take it to a
qualified electric motor repair shop and have it
tested.
If the switch is suspect, you have two options:
Have a qualified electrician test the switch for
function, or purchase a new switch and establish if
that was the problem on changeout.
Use adequate size extension cord.
Contact qualified electrician.
Allow sanding disc to cut freely, do not force.
Reduce pressure.
Stroke across the belt using full width.
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