Use and Care Manual

5
Palmgren Operating Manual & Parts List 9682072A, 9682073A and 9682075A
OPERATION (CONTINUED)
• Deburring edge is done best by using the grinder to pull burr
from edge across the bevel angle.
• The grinding wheel should rotate into object being sharpened.
• Dip work into a coolant regularly to prevent overheating. Over-
heating can weaken metals.
MAINTENANCE
• As wheels wear, tool rests should be positioned closer to the
face of the wheels.
• The gap between the wheel and the tool rest should not be
greater than 1/16”. When the wheels are worn to the extent that
the 1/16” maximum gap cannot be maintained, the wheels
should be replaced.
• Models 9682072A and 9682073A: Replacement wheels must
have a minimum rated speed of at least 3600 RPM.
• Model 9682075: Replacement wheels must have a minimum
rated speed of 1800 RPM.
• Maximum wheel diameter is 6” for 9682072A, 8” for 9682073A,
and 10” for 9682075A.
• To loosen nuts holding the wheels, disconnect power and push
a wood wedge between the tool rest and the wheel to keep the
shaft from turning. The threads on the right side of the grinder
(facing unit) are right hand; threads on the left side are left
hand. Tighten nuts securely before operating the grinder.
• For grinding efficiency, wheels should be dressed periodically,
especially if they become clogged from grinding soft metals.
SYMPTOM
Grinder won’t start
Excessive vibration
Motor overheating
Fuses are being blown or circuit
breakers are being tripped
Motor does not develop proper torque
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
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. Motor wired for different line voltage
6. Faulty internal wiring
1. Motor wired for different line voltage
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
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. Rewire motor as per wiring diagram,
(See Installation, Page 4)
6. Contact your Palmgren distributor
1. Rewire motor as per wiring diagram,
(See Installation, Page 4)
TROUBLESHOOTING