SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION
TROUBLESHOOTING
6
Palmgren Operating Manual & Parts List 9682096, 9682097 and 9682098
Grinder won’t start
Excessive vibration
Motor overheating
Fuses are being blown or circuit
breakers are being tripped
Grinder will not operate in
variable speed mode
1. Blown line fuse or tripped circuit breaker
2. Low line voltage
3. Material wedged between wheel
and guard
4. Defective switch
5. Defective, blown capacitor
6. Defective circuit board
1. Improper mounting of grinder or
accessories
2. Grinding wheel out of balance
3. Improper wheel mounting
1. Excess pressure required to grind
material
2. Grinding on side of wheel
3. Motor not turning freely (without power)
1. Overloading due to binding
2. Defective plug
3. Defective cord
4. Defective switch
5. Faulty internal wiring
1. Defective variable speed switch
2. Defective sensor
3. Defective circuit board
1. If fuse is blown, replace with fuse of proper size. If
breaker tripped, reset it
2. Check power supply for voltage and
correct as needed
3. Turn grinder off and remove material
4. Replace switch
5. Replace capacitor
6. Replace circuit board
1. Remount
2. Dress wheels or replace wheels
3. Remount wheels, but rotate one wheel 90º with re-
spect to its previous position. Other wheel should
remain in its original position
1. Dress wheel or replace wheel with one of proper
grit
2. Grind only on face of wheel
3. Clean around wheels and shaft and/or replace
bearings
1. Clean around wheels and shaft and/or replace
bearings
2. Replace plug
3. Replace cord
4. Replace switch
5. Contact authorized Palmgren Service Center
1. Replace switch
2. Replace sensor
3. Replace circuit board
9682096_9682097_9682098_oipm_En012_9642040.01 01/31/17 12:19 PM Page 6
