5
SYMPTOM
Grinder won’t start
Excessive vibration
Grinder overheating
Fuses are being blown or
circuit breakers are being tripped
Grinder will not operate in variable speed
mode
POSSIBLE CAUSE(S)
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
CORRECTIVE ACTION
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 respect 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 your Palmgren distributor
1. Replace switch
2. Replace sensor
3. Replace circuit board
TROUBLESHOOTING
Palmgren Operating Manual & Parts List
82064A
