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Troubleshooting the OES9138 Edge Sander
Trouble Probable Cause Remedy
Machine will not
start/restart or
repeatedly trips
circuit breakers or
blows fuses.
Machine not connected to
power source.
Verify machine is connected to power.
Fuse blown, or circuit
breaker tripped.
Replace fuse, or reset circuit breaker.
Cord damaged. Replace cord.
Extension cord too light or
too long.
Use adequate size extension cord.
Overload automatic reset
has not reset.
If the Edge Sander overloads on the circuit breaker
built in to the motor starter, it takes time for the
machine to cool down before restart. Allow unit to
adquately cool before attempting restart. If problem
persists, check amp setting on the motor starter
inside the electrical box.
Edge Sander frequently
trips.
Check the amp setting on the overload relay.
Match the full load amps on the motor as noted on
the motor plate. If amp setting is correct then there
is probably a loose electrical lead or a failed
component. See below.
Building circuit breaker trips
or fuse blows.
Verify that edge sander is on a circuit of correct
size. If circuit size is correct, there is probably a
loose electrical lead. Check amp setting on motor
starter.
Loose electrical
connections.
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.
Motor starter failure.
If you have access to a voltmeter, you can
separate a starter failure from a motor failure by
first, verifying incoming voltage at 220+/-20 and
second, checking the voltage between starter and
motor at 220+/-20. If incoming voltage is incorrect,
you have a power supply problem. If voltage
between starter and motor is incorrect, you have a
starter problem. If voltage between starter and
motor is correct, you have a motor problem.
Motor failure.
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.