Promac 212VLL, Operator'S Manual

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34
TROUBLE SHOOTING
PROBLEM PROBABLE CAUSE REMEDY
Noisy operation.
1. Incorrect belt tension.
2. Dry spindle.
3. Loose spindle pulley.
4. Loose motor pulley.
•
Adjust the belt tension. See "To replace
the belt" in ADJUSTMENTS.
•
Lubricate the spindle. See MAINTENANCE
section.
•
Tighten the retaining nut on the pulley
insert.
•
Tighten the set screw on the side of the
motor pulley.
The drill bit burns or
smokes.
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.
•
Change the speed. See "Variable speed"
in OPERATION.
•
Retract the drill bit frequently to clear the
chips.
•
Resharpen or replace the drill bit.
•
Feed fast enough to cut the workpiece.
See "To drill a hole" in OPERATION.
•
Lubricate the drill bit with cutting oil or
motor oil.
Excessive drill
run-out
or wobble, drilled
hole
is not round.
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.
•
Replace the drill bit.
•
Reinstall the bit. See "To install drill bits" in
ADJUSTMENTS.
•
Replace bearings. Take to a qualified
service technician.
•
Resharpen the drill bit correctly or replace
with the appropriate type.
•
Reinstall the chuck. See "To install the
chuck" in ASSEMBLY.
Drill bit binds in the
workpiece.
1. The workpiece is pinching
the bit.
2. Excessive feed pressure.
•
Support or clamp the workpiece. See
"Position the table and workpiece" in
OPERATION.
•
Feed more slowly. See "Feeding the drill
bit" in OPERATION.
Spindle returns too
slowly or too quickly.
1. Spring has improper
tension.
•
Adjust the spring tension. See "Spindle
return spring" in ADJUSTMENTS.
Chuck falls off
spindle.
1. Dirt, grease, or oil on the
tapered surface on the
spindle or in the chuck.
•
Clean the tapered surface of both the chuck
and the spindle with a household detergent. See
"To install the chuck" in ASSEMBLY.