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Idiomas disponibles
Idiomas disponibles
TROUBLESHOOTING
WARNING
Stop using the tool immediately if any of the following problems occur. Repairs and replacements should
only be performed by an authorized technician. For any questions, please contact our customer service
at 01 800 70 56682 ó 55 5272 4808, M-F 8-5 CST or e-mail us at centrodeservicio@knova.com.mx
PROBLEM
Noisy operation
or excessive
vibration
The drill bit burns
or smokes
Excessive drill
run out or
wobble; drilled
hole is not round
Drill bit binds in
the workpiece
Spindle returns too
slowly or too quickly
Chuck falls
off spindle
Motor will
not run
Motor stalls
CAUSE
1) Incorrect belt tension
2) Dry spindle
3) Loose spindle pulley
4) Loose motor pulley
5) Seized motor pulley
1) Drilling at the incorrect speed
2) The wood chips are not coming
out of the hole
3) Dull drill bit
4) Feeding the workpiece too slowly
5) Not lubricated
1) Bent drill bit
2) Bit improperly installed in the chuck
3) Worn spindle bearings
4) Lengths of cutting flutes or angles not
appropriate for the hardness of the
wood grain
5) Chuck not properly installed
1) The workpiece is pinching the bit
2) Excessive feed pressure
Coil spring has improper tension
Dirt, grease, or oil on the tapered
surface on the spindle or in the chuck
1) Defective or broken switch
2) Defective or damaged power cord
3) Open circuit, loose connections,
or burned out motor
4) Low voltage
5) Bad starting capacitor
6) Worn centrifugal switch contacts
1) Short circuit in motor
2) Incorrect fuses or circuit breakers
3) Overloaded circuit
4) Low voltage
1) Adjust the belt tension.
(See REPLACE THE BELT section)
2) Lubricate the spindle.
3) Tighten the set screws on the side of the spindle pulley.
4) Tighten the set screws on the side of the motor pulley.
5) Lubricate motor pulley and motor shaft; ensure that
pulley opens and closes when machine is ON and
speed is adjusted.
1) Change the speed.
2) Retract the drill bit frequently to clear the chips.
3) Resharpen or replace the drill bit.
4) Feed fast enough to cut the workpiece.
5) Lubricate the drill bit with cutting oil or motor oil.
1) Replace the drill bit.
2) Reinstall the bit.
3) Bearings may need replacement. Contact customer
service at 01 800 70 56682.
4) Resharpen the drill bit correctly or replace with
the appropriate type.
5) Reinstall the chuck.
1) Support or clamp the workpiece.
2) Feed more slowly.
Adjust the coil spring tension.
See "Spindle Return Spring" on p. 9
Clean the tapered surface of both the chuck and
spindle with a household detergent.
1) Contact customer service at 01 800 70 56682.
2) Contact customer service at 01 800 70 56682.
3) Contact customer service at 01 800 70 56682.
4) Check the power line for the proper voltage. Use
another circuit or have a qualified electrician upgrade
the service.
5) Contact customer service at 01 800 70 56682.
6) Contact customer service at 01 800 70 56682.
1) Contact customer service at 01 800 70 56682.
2) Replace with correct fuse or circuit breaker for
the circuit.
3) Turn off other machines and retry.
4) Check the power line for the proper voltage.
Use another circuit or have a qualified electrician
upgrade the service.
13
SOLUTION
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