Manual

Owner's Manual
ASSEMBLYANDINSTALLATION
Wheel Replacement (Fig. 4)
_WARNiNG ITurnthe power switch off and remove the plug from the outlet before
adjustingor maintainingthegrinder.Donotattempttorepairor maintainthemotorelectrical
components. This should only be done by aqualified service technician.
If you must replacea grinding wheel, besure to obtain one with a safe ratedspeedat leastas high as
the "no load speed"RPM marked onthe data plateof the grinder.To replacethe grinding wheel,
removethe wheelguard cover by looseningthe screws, next, loosen the wheelnut in a clockwise
direction for the left sideand a counterclockwisedirection for the right side.Removethe outer flange
and grinding wheel.To install a new grinding wheel, reversethe above procedure.Besure the grinding
wheeland outer flangeare properly seatedonthe spindleshaft.
Electrictools usedon fiberglass material, wallboard, spackling compounds, or plasterare subject to
acceleratedwearand possible prematurefailure becausethefiberglasschips andgrindings arehighly
abrasiveto bearings,brushes, commutators, etc. Consequently,we do not recommendedusingthis
tool for extendedwork onthesetypes of materials.However,if you dowork with any of these materials,
it is extremely important to cleanthetool usingcompressed air.
Fig ,5
Fig 4
WORKLIGHT BULBREPLACEMENT(Fig. 5)
1. Unplugthe grinder.
2. Removethetwo phillips screwsfrom the top of worklight cover.
3. Removeworklight cover.
4. While gently pushing in bulb, turn bulb to left to remove.
5. Placenew bulb into bulb receptacleand gently push in while turning to the right until bulb is fully
seated.
6. Reinstallthe worklight cover using the two phillips screws.
NOTE:To avoid the risk of fire, always use a 12v bulb with wattage no greaterthan low.
8what's Manual
TROUBLESHOOTING
Thissection covers themost common problemsencountered during operationandwhat to do about
them. Donot makeanyadjustments until machineis unpluggedandmoving parts havecome to a
complete stop.
SYMPTOM POSSIBLECAUSE CORRECTIVEACTION
Motor will not start. 1. Low voltage. 1. Check power line for proper voltage.
2. Openciruit in motor or loose connections. 2. Inspect all leadconnections on motor for loose
or open connections
Motor will not start; fuses 1. Short circuit in line cord or plug. 1. Inspect cord or plug for damaged insulation
or circuit breakers blow 2. Short circuit in motor or looseconnections, shorted wires.
3. Incorrect fuses or circuit breakers 2.Inspect all connections on motor for loose or
in power line. shorted terminals or worn insulation
&Install correct fuses or ciruit breakers.
Motor overheats. 1. Motor overloaded. 1. Reduceload on motor.
Motor stalls (resulting in 1. Short circuit in motor or looseconnections. 1. Inspect connections on motor for loose or
blown fuses or tripped 2. Low voltage, shorted terminals or worn insulation.
circuit). 3. Incorrect fuses or circuit breakers in 2. Correct the low voltage conditions.
power line. 3. Install correct fuses or circuit breakers.
4. Motor overloaded. 4. Reduceload on motor.
Machine slows when 1. Depth of cut too great. 1. Slow down the rate of movement of the
operating, workpiece into wheel.
Wavy condition on 1. Machine vibrating 1. Makesure machine s is securely mounted on
surface of workpiece. 2. Workpiece not being held firmly, a solid surface.
3. Wheel face uneven. 2. Usea holding deviceto firmly realign the
4. Wheel istoo hard. workpiece
&Dress the grinding wheel.
4.Use softer wheel,or reducethe feed rate.
Lines on surface of 1. Impurity on wheel surface. 1. Dressthe grinding wheel.
workpiece. 2. Workpiece not being held tightly. 2. Usea holding deviceto firmly retain the
workpiece.
Burning spots or cracks 1. Improper type of grinding wheel.
in the workpiece. 2. Improper feed rate.
3. Coolant required,
Wheel dulls quickly,
grit falls off.
Wheel clogs and workpiece
shows burn marks
1. Depth of cut too great.
2. Wheel is soft.
3. Wheel diameter too small.
4. Bad wheel dress.
5. Defective wheel bonding.
1. Wheel istoo hard.
2. Feed ratetoo slow.
3. Bad wheel dress.
4. Coolant required.
1. Try awheelwhich issofter styleor a coarsergrit.
2. Slow down the rate of movement of the
workpiece into wheel.
3. Add optional coolant system or introduce
a coolant by hand.
1. Slow down the rate of movement of the
workpiece
2. Wheel too soft for the material being ground,
harder bond.
3. Replacethe wheel.
4. Dressthe wheel.
5. Consult manufacturer of grinding wheel.
1. Wheel too hard for the material being ground,
select softer bond,
2. Increase ethe rate of movement ofthe
workpiece eworkpiece into wheel.
3. Dressthe wheel.
4. Add optional coolant system or introduce
coolant by hand,