Troubleshooting; Xiii. Troubleshooting - Grizzly G1071 Instruction Manual

Turn switch off and disconnect from power source before troubleshooting the machine.
SYMPTOM
Motor will not start.
Motor will not start;
fuses or circuit
breakers blow.
Motor fails to devel-
op full power (power
output of motor
decreases rapidly
with decrease in
voltage at motor ter-
minals).
Motor overheats.
Motor stalls (result-
ing in blown fuses or
tripped circuit).
Machine slows
when operating.
Spindle Collar rubs
the edge of the table
when tilted to 45°.
Sanding sleeve
slips.
Sanding sleeve
burns the wood.
- 14 -
POSSIBLE CAUSE
1. Low or no voltage.
2. Open circuit in motor or
loose connections.
1. Short circuit in line cord
or plug.
2. Short circuit in motor or
loose connections.
3. Incorrect fuses or circuit
breakers in power line.
1. Power line overloaded
with lights, appliances,
and other motors.
2. Undersized wires or cir-
cuits too long.
3. General overloading of
power company facili-
ties.
1. Motor overloaded.
2. Air circulation through
the motor restricted.
1. Short circuit in motor or
loose connections.
2. Low voltage.
3. Incorrect fuses or circuit
breakers in power line.
4. Motor overloaded.
Applying too
pressure to workpiece.
Table slightly out of
place.
Sleeve loose on spin-
dle.
Worn out sleeve.

XIII. TROUBLESHOOTING

CORRECTIVE ACTION
1. Check power line for proper voltage.
2. Inspect all lead connections on motor for
loose or open connections.
1. Inspect cord or plug for damaged insula-
tion and shorted wires.
2. Inspect all connections on motor for loose
or shorted terminals or worn insulation.
3. Install correct fuses or circuit breakers.
1. Reduce load on power line.
2. Increase wire sizes or reduce length of
wire.
3. Request a power check from the power
company.
1. Reduce load on motor.
2. Clean out motor to provide normal air cir-
culation.
1. Inspect connections on motor for loose or
shorted terminals or worn insulation.
2 Correct the low voltage conditions.
3. Install correct fuses or circuit breakers.
4. Reduce load on motor.
much Feed workpiece slower.
Loosen the 4 bolts that mount the tables
to the trunnions. Shift the table slightly to
eliminate contact.
Tighten upper sanding sleeve nut.
Replace sleeve.
G1071 Oscillating Spindle Sander