RIDGID DP15501 - Manual (Page 29)

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TROUBLESHOOTING
Drill bit burns 1. Incorrect speed 1. Change speed. See “Adjustment” section.
2. Chips not coming out of hole 2. Retract drill bit frequency to clear hole chips
3. Dull drill bit 3. Resharpen or replace drill bit
4. Feeding too slow 4. Feed fast enough, allow drill bit to cut
5. Not lubricated 5. Lubricate drill bit. See “Operation” section.
PROBLEM CAUSE SOLUTION
Drill bit leads off, hole not
round 1. Hard grain in wood or lengths of
cutting lips and/or angles not equal.
1. Resharpen drill bit correctly or replace.
2. Bent drill bit 2. Replace drill bit
Wood splinters on underside 1. No “backup material” under
workpiece
1. Use “backup material”. See “Operation”
section.
Workpiece torn loose from
hand 1. Not supported or clamped properly 1. Support or clamp workpiece. See
“Operation” section.
Drill bit binds in workpiece 1. ‘Workpiece pinching drill bit or
excessive feed pressure.
1. Support or clamp workpiece. See
“Operation” section.
2. Improper belt tension 2. Adjust tension. See “Assembly - To Install
Idler Pulley” section.
Excessive drill bit runout or
wobble. 1. Bend drill bit 1. Use a straight drill bit.
2. Worn spindle bearings 2. Replace bearings
3. Drill bit not properly installed in
chuck
3. Install drill bit properly. See
“Operation”section.
4. Chuck not properly installed 4. Install chuck properly, refer to “Assembly-
To Install the Chuck”.
Quill returns too slow or too
fast 1. Spring has improper tension 1. Adjust spring tension. See “Adjustments -
To Adjust Quill Return Spring” section.
Chuck will not stay attached
to spindle, it falls off when
trying to install. 1. Dirt, grease or oil on the tapered
inside surface of chuck or on the
spindles tapered surface.
1. Using a household detergent, clean the
tapered surface of the chuck and spindle to
remove all dirt, grease and oil.
Chuck rotates but does not
deliver sufficient torque to
properly drill. 1. Spindle pulley nut (part no. 821742)
loose.
1. Turn nut counterclockwise to tighten. (The
nut has left-hand threads.)
Noisy Operation 1. Incorrect belt tension. 1. Adjust tension. See “Assembly - To Install
Idler Pulley” section.
2. Dry spindle. 2. Lubricate spindle. See “Maintenance”
section.
3. Loose spindle pulley 3. Checking tightness of retaining nut on
pulley, and tighten if necessary.
4. Loose motor pulley 4. Tighten set screws in pulleys.