Troubleshooting Guide - KNOVA KN DP-2000 Operator's Manual

TROUBLESHOOTING GUIDE

WARNING
To avoid injury from an accidental start, turn the switch OFF and always remove the plug from the power source before
making any adjustment.
• Consult your local call Service Centre if for any reason the motor will not run.
PROBLEM
Noisy operation
Drill bit burn.
Runout of drill bit point,
drilled hole not round.
Wood splinters on
underside.
Workpiece torn loose
from hand.
Drill bit binds in workpiece.
Excessive drill bit runout
or wobble.
Quill returns too slow
or too fast.
Chuck will not stay attached
to spindle. It falls off when
trying to install.
POSSIBLE CAUSES
1. Incorrect belt tension.
2. Dry spindle.
3. Loose spindle pulley.
4. Loose motor pulley.
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 lengths
of cutting flutes and/or angles
not equal.
2. Bent drill bit.
1. No backup material under
workpiece.
1. Not supported or clamped
properly.
1. Workpiece pinching drill bit,
or excessive feed pressure.
2. Improper belt tension.
1. Bent drill bit.
2. Worn bearings.
3. Drill bit not properly installed
in chuck.
4. Chuck not properly installed.
1. Spring has improper tension.
1. Dirt, grease, or oil on the tapered
inside surface of chuck or on
the spindle's tapered surface.
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.
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