Troubleshooting Guide; Chuck; Batteries - KNOVA KN DP-2500N Manual Del Usuario

TROUBLESHOOTING GUIDE

To avoid injury from accidental starting, always turn switch OFF and unplug the tool before moving,
W A R N I N G
replacing the blade or making adjustments.
• Consult your Knova Service Center if for any reason the motor will not run.
PROBLEM POSSIBLE CAUSES
1. Incorrect belt tension.
Noisy operation
2. Dry spindle.
3. Loose spindle pulley.
4. Loose motor pulley.
Drill bit burn. 1. Incorrect speed.
2. Chip not coming out of hole.
3. Dull drill bit.
4. Feeding too slowly.
5. Not lubricated.
1. Hand grain in wood or
Runout of drill
bit point, drilled
hole not round.
2. Bent drill bit.
Wood splinters
1. No backup material
on underside.
Workpiece torn
1. Not supported or
loose from hand.
1. Workpiece pinching drill bit,
Drill bit binds
in workpiece.
2. Improper belt tension.
1. Bent drill bit.
Excessive drill bit
runout or wobble.
2. Worn bearings.
3. Drill bit not properly
4. Chuck not properly
Quill returns too
1. Coil spring has
slow or too fast.
Chuck will not stay
1. Dirt, grease, or oil on the
attached to spindle.
It falls off when
trying to install.
1. The batteries are dead.
The laser guide
will not turn on.
2. The battery contacts
lengths of cutting flutes
and/or angles not equal.
under workpiece.
clamped properly.
or excessive feed pressure.
installed in chuck.
installed.
improper tension.
tapered inside surface of
chuck or on the spindle's
tapered surface.
need adjustment.
REMEDY
1. Adjust tension. See
ASSEMBLY-TENSIONING BELT.
2. Lubricate spindle. See LUBRICATION.
3. Check tightness of retaining nut on pulley,
and tighten if necessary.
4. Tighten set screw in motor pulley.
1. Change speed. See BASIC DRILL
PRESS OPERATION- SPINDLE SPEEDS.
2. Retract drill frequently to clear chips.
3. Resharpen drill bit.
4. Feed fast enough – allow drill to cut.
5. Lubricate drill. See BASIC
DRILL PRESS OPERATION-FEEDING.
1. Resharpen drill bit correctly.
2. Replace drill bit.
1. Use backup material. See BASIC
DRILL PRESS OPERATION.
1. Support workpiece or clamp it. See
BASIC DRILL PRESS OPERATION.
1. Support workpiece or clamp it.
See BASIC DRILL PRESS OPERATION.
2. Adjust tension. See
ASSEMBLY– TENSIONING BELT.
1. Use a straight drill bit.
2. Replace bearings.
3. Install drill properly. See BASIC DRILL
PRESS OPERATION and ASSEMBLY.
4. Install chuck properly. See
ASSEMBLY – INSTALLING THE CHUCK.
1. Adjust spring tension. See ASSEMBLY AND
ADJUSTMENTS –QUILL RETURN SPRING.
1. Using a household detergent or non-oil based cleaning
solution such as Rubbing Alcohol, clean the tapered surface
of the chuck and spindle to remove all dirt, grease and oil.
See ASSEMBLY – INSTALLING THE CHUCK.
1. Replace with new AAA batteries.
2. Tap outside the bottom and side of the laser housing
lightly with the but end of a screwdriver.
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