Grizzly G0503 - Manual (Page 70)

Model G0503 (Mfg. Since 12/08) -68-
Troubleshooting
SyMpTOM pOSSIBLE cAuSE cORREcTIvE AcTION
Motor will not start. 1. low voltage.
2. open circuit in motor or loose connections.
1. Check power line for proper voltage.
2. inspect all lead connections on motor for loose or
open connections
Motor will not start; fuses or
circuit breakers blow.
1. short circuit in power wires.
2. short circuit in motor or loose connections.
3. Circuit or motor overloaded
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
Motor overheats. 1. Motor overloaded.
2. air circulation through motor restricted.
1. reduce load on motor.
2. Clean out motor to provide normal air circulation.
Motor stalls (resulting in blown
fuses or circuit breakers).
1. short circuit in motor or loose connections.
2. low voltage.
3. incorrect fuses or circuit breakers in power line.
4. Motor overloaded.
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.
Blade runs backwards. 1. two of the power wires reversed. 1. switch two of the power wires at the terminal
strip.
Blade slows when operating. 1. applying too much pressure to workpiece. 1. slow down the feed rate.
Blade slows when cutting and
squeals on start-up.
1. V-Belt loose.
1. V-Belt worn out.
1. tighten V-Belt as instructed on page 48.
1. replace V-Belt as instructed on page 48.
Excessive vibration. 1. V-Belt worn out.
2. Bent or worn out blade.
3. wheel bearings are worn out.
4. wheels are worn out.
1. replace V-Belt as instructed on page 48.
2. replace blade as shown on page 22.
3. replace wheel bearings.
4. replace wheels.
Conveyor will not run. 1. hydraulic motor is not running.
2. low on hydraulic fluid.
3. hydraulic lines are attached backwards.
1. see motor troubleshooting above.
2. Fix any leaks and add hydraulic fluid.
3. switch hydraulic lines.
Conveyor runs slow. 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. 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.
hydraulic fluid is overheating. 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. 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.
hydraulic fluid looks milky. 1. water in the hydraulic system. 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.
hydraulic fluid is dark brown
or opaque.
1. hydraulic fluid has become overheated and
thermal breakdown has occurred.
2. hydraulic fluid is contaminated.
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
.
Filter gauge is in the red. 1. Filter is clogged. 1. replace filter and perform a hydraulic system
minor service as described on page 37.
Blade does not run evenly on
wheels or runs off.
1. tracking is not adjusted properly. 1. adjust tracking as instructed on page 40.
Blade does not cut evenly or
leaves a rough surface.
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. 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.
Blade contacting guides. 1. guides not adjusted correctly. 1. adjust guides as shown on page 42.
workpiece hangs up on pres-
sure rollers.
1. pressure rollers out of adjustment. 1. adjust pressure rollers as described on page 29.
workpiece is thicker on one
side than the other.
1. Conveyor is not level. 1. level the conveyor as described on page 44.