Troubleshooting - Grizzly G0503 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 circuit breakers).
Blade runs backwards.
Blade slows when operating.
Blade slows when cutting and
squeals on start-up.
Excessive vibration.
Conveyor will not run.
Conveyor runs slow.
hydraulic fluid is overheating.
hydraulic fluid looks milky.
hydraulic fluid is dark brown
or opaque.
Filter gauge is in the red.
Blade does not run evenly on
wheels or runs off.
Blade does not cut evenly or
leaves a rough surface.
Blade contacting guides.
workpiece hangs up on pres-
sure rollers.
workpiece is thicker on one
side than the other.
-68-

Troubleshooting

pOSSIBLE cAuSE
1. low voltage.
2. open circuit in motor or loose connections.
1. short circuit in power wires.
2. short circuit in motor or loose connections.
3. Circuit or motor overloaded
1. Motor overloaded.
2. air circulation through 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. two of the power wires reversed.
1. applying too much pressure to workpiece.
1. V-Belt loose.
1. V-Belt worn out.
1. V-Belt worn out.
2. Bent or worn out blade.
3. wheel bearings are worn out.
4. wheels are worn out.
1. hydraulic motor is not running.
2. low on hydraulic fluid.
3. hydraulic lines are attached backwards.
1. too much resistance because of a dull blade on
resaw, or an extremely heavy workpiece.
2. restricted line or bad hydraulic motor.
3. hydraulic fluid too cold.
1. oil cooler fins are dirty.
2. restricted flow through the oil cooler.
3. Cooling fan not working.
4. overworked system.
5. low on hydraulic fluid.
6. restricted hydraulic line.
7. Clogged filter.
1. water in the hydraulic system.
1. hydraulic fluid has become overheated and
thermal breakdown has occurred.
2. hydraulic fluid is contaminated.
1. Filter is clogged.
1. tracking is not adjusted properly.
1. Blade is not properly tensioned.
2. tooth set is uneven.
3. teeth are sharper on one side than the other.
4. Blade has a bad weld, or a crack.
1. guides not adjusted correctly.
1. pressure rollers out of adjustment.
1. Conveyor is not level.
cORREcTIvE AcTION
1. Check power line for proper voltage.
2. inspect all lead connections on motor for loose or
open connections
1. inspect wiring for damaged insulation and short-
ed wires.
2. repair or replace all connections on motor that
are loose or shorted or have worn insulation.
3. reduce amperage load on circuit or motor
1. reduce load on motor.
2. Clean out motor to provide normal air circulation.
1. repair or replace connections on motor that are
loose or shorted or have worn insulation.
2. Correct the low voltage conditions.
3. install correct fuses or circuit breakers.
4. reduce load on motor.
1. switch two of the power wires at the terminal
strip.
1. slow down the feed rate.
1. tighten V-Belt as instructed on page 48.
1. replace V-Belt as instructed on page 48.
1. replace V-Belt as instructed on page 48.
2. replace blade as shown on page 22.
3. replace wheel bearings.
4. replace wheels.
1. see motor troubleshooting above.
2. Fix any leaks and add hydraulic fluid.
3. switch hydraulic lines.
1. replace the blade on the resaw, or remove the
extremely heavy workpiece.
2. replace hydraulic line or motor.
3. warm up hydraulic fluid or replace fluid with iso
Vg 68 hydraulic fluid.
1. Clean fins.
2. replace oil cooler.
3. repair cooling fan.
4. reduce load on conveyor belt.
5. Fix any leaks and add hydraulic fluid.
6. remove any pinch or kink in the hydraulic line.
7. replace filter and perform a hydraulic system
minor service as described on page 37.
1. replace the tank filler cap, tank gaskets, and
repair leaks on the suction side of the hydraulic
system. then perform a hydraulic system major
service as described on page 38.
1. repair the cause of overheating as described
above and then perform a hydraulic system major
service as described on page 38.
2. perform a hydraulic system major service as
.
described on page 38
1. replace filter and perform a hydraulic system
minor service as described on page 37.
1. adjust tracking as instructed on page 40.
1. adjust tension as instructed on page 26.
2. replace blade as shown on page 22.
3. replace blade as shown on page 22.
4. inspect blade and replace as shown on page 22
if necessary.
1. adjust guides as shown on page 42.
1. adjust pressure rollers as described on page 29.
1. level the conveyor as described on page 44.
Model g0503 (Mfg. since 12/08)