Section 7: Service; Troubleshooting - Grizzly G4176 Owner's Manual

SEctiON 7: SERvicE

review the troubleshooting and procedures in this section to fix or adjust your machine if a problem devel-
ops. if you need replacement parts or you are unsure of your repair skills, then feel free to call our technical
support at (570) 546-9663.
Motor & Electrical
symptom possible Cause
Motor will not start. 1. low voltage.
2. open circuit in motor or loose connections.
3. Blown fuse tripped circuit breaker.
4. Capacitor at fault.
5. Motor switch or motor is at fault.
Fuses or circuit 1. short circuit in line cord or plug.
breakers trip.
2. short circuit in motor or loose connections.
3. power feeder rollers are jammed.
Motor overheats. 1. Motor overloaded.
2. air circulation through the motor restricted.
Workpiece jams 1. rollers set too low.
when feeding under 2. Feeder at wrong angle.
rollers.
Workpiece slips 1. rollers positioned too high, no traction.
while passing 2. Feeding too fast.
beneath rollers. 3. rollers are dirty or oily.
4. Worn roller(s).
Workpiece cut is 1. Wrong feed speed.
burnt. 2. Cutter is at fault.
rough finish or 1. Feed speed too fast.
chipped grain on 2. dull cutter or blade.
workpiece. 3. power feeder angle is not toed in to keep
workpiece against the fence.
Fuzzy grain occurs 1. lumber has high moisture content.
when planing or
moulding. 2. dull knives/cutter.
1. power feeder roller height is set incorrectly. 1. lower the power feeder roller
Workpiece hangs
and does not enter
the machine.
Model G4176 (Mfg. Since 8/97)

troubleshooting

possible solution
1. Check power supply for proper voltage.
2. inspect all lead connections on motor and circuit
board for loose or open connections.
3. repair for cause of overload and replace fuse or
reset circuit breaker.
4. replace capacitor.
5. replace switch, or motor.
1. inspect cord or plug for damaged insulation and
shorted wires and replace extension cord.
2. inspect all connections on motor for loose or
shorted terminals or worn insulation.
3. disconnect all machinery from power and correct
for cause of jamming.
1. reduce power feeder feed rate.
2. Clean out motor fan cover to provide normal air
circulation.
1. raise feeder.
2. adjust angle.
1. lower feeder.
2. slow feed speed.
3. Clean roller surface with a mild solvent.
4. replace roller(s) (Page 24).
1. adjust feed speed.
2. sharpen or replace dull blade or cutter.
1. slow speed.
2. replace with sharp cutter or blade.
3. adjust power feeder so it is toed-in 1° to 1.5°
toward the fence.
1. if moisture content is higher than 20%, sticker and
allow to dry.
2. sharpen or replace knives.
height of the workpiece.
⁄
1 " lower than the
8
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