Grizzly Model G0550 - Manual (Page 49)

G0550/G0551 15" Planer -47-
Troubleshooting Guide
SYMPTOM
Motor will not start.
Motor will not start; fuses or
circuit breakers blow.
Motor overheats.
Motor stalls (resulting in
blown fuses or tripped cir-
cuit).
Machine slows when oper-
ating.
Loud, repetitious noise com-
ing from machine
Machine is loud when cut-
ting. Overheats or bogs
down in the cut.
Infeed roller marks are left
on the workpiece.
Outfeed roller marks are left
on right side of workpiece.
Cannot control snipe.
Chip buildup on outfeed
roller.
Machine howls on startup.
Table moves down while
cutting.
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. Feed rate too high.
2. Depth of cut too great.
1. Pulley setscrews or keys are mis-
sing or loose.
2. Motor fan is hitting the cover.
3. V-belt is defective
1. Excessive depth of cut.
2. Knives are dull
1. Depth of cut too shallow.
1. Too much spring tension on feed
roller.
1. Long or heavy board sags as it
enters and exits.
1. Chips working their way back under
the chip deflector.
1. Chip deflector too close to the
cutterhead.
1. Knives dull.
2. Cutterhead is not locked.
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 shorted 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. Reduce depth of cut.
1. Inspect keys and setscrews. Replace or tighten if necessary.
2. Tighten fan or shim cover.
3. Replace V-belt. See Maintenance.
1. Decrease depth of cut.
2. Sharpen knives.
1. Increase depth of cut.
1. Refer to Feed Roller Pressure section for adjustment.
1. Lift up on unsupported end of board as it enters and exits
cutterhead.
1. Lay duct tape over the mounting bolts along the outside edge to seal
any possible gaps.
1. Move chip deflector back 1 /
8
" to 1 /
4
" from the cutterhead.
1. Replace knives.
2. Tighten cutterhead lock knobs.