Troubleshooting - Grizzly G4185 Instruction Manual

SYMPTOM
Motor will not start.
Motor will not start; fuses
or circuit breakers blow.
Motor overheats.
Motor stalls (resulting in
blown fuses or tripped
circuit).
Machine slows when
operating.
Holes do not line up cor-
rectly
Excessive vibration.
-22-

TROUBLESHOOTING

POSSIBLE CAUSE
1. Low 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. 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.
1. Applying too much pressure
to workpiece.
2. Bits are dull.
1. Table is is not adjusted prop-
erly.
1. Boring head not mounted
correctly.
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 insulation and
shorted wires.
2. Inspect all connections on motor for loose or short-
ed terminals or worn insulation.
3. Install correct fuses or circuit breakers.
1. Reduce load on motor.
2. Clean out motor to provide normal air circulation.
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.
1. Feed workpiece slower.
2. Replace bits.
1. Adjust table.
1. Remove and remount boring head.
2. Remove and reinstall bits.
Model G4185 Horizontal Boring Machine