15
12.0 Troubleshooting JDP-20VS series Drill Press
Trouble Probable Cause Remedy *
Spindle does not turn.
Overload protector tripped.
Allow machine to cool, then press reset
button on overload relay.
Branch circuit breaker tripped or fuse
blown.
Reset branch circuit breaker/replace fuse.
Make sure incoming power matches
machine specs.
Open wire in switch circuit. Repair open circuit.
Defective switch. Replace switch.
Broken drive belt. Replace drive belt.
Spindle noisy.
Damaged spindle bearings. Replace bearings.
Worn spline. Replace spline.
Insufficient lubrication. Maintain proper lubrication.
Drill stalls.
Worn drive belt.
Check condition of belt. Replace if glazed
or slipping on pulleys.
Excessive feed rate for size of drill and
material being drilled. No cutting fluid or
improper cutting fluid.
Reduce feed pressure or use cutting fluid.
Use correct cutting fluid.
Poorly drilled holes.
Dull drill. Sharpen or replace drill.
Lack of rigidity in hold-down method.
Check that all T-slot hold-downs are tight
and that table-lock and drill head bolts are
tight.
Speed too fast for material and drill size.
Check spindle speed recommendations.
Reduce speed if necessary.
Feed too fast for material and drill size. Reduce feed rate.
No or improper cutting fluid or coolant
being used.
Use cutting fluid, or change to proper fluid
or coolant for material being drilled.
Improperly ground drill bit.
Check for proper angles and reliefs.
Regrind to proper geometry.
Motor overheating.
Electrical circuit fault.
Check current draw in circuit. Make sure
current draw is the same as rating on
motor plate.
Oversize drill. Reduce drill size.
Excessive feed. Reduce feed rate.
No cutting fluid, or wrong fluid.
Use correct cutting fluid for the material
and drill.
Table binding, or cannot
be raised.
Lack of lubrication.
Clean and lubricate rack, column, shafts,
or wherever needed.
No speed readout. Speed pickup out of adjustment or failed.
Adjust gap between speed pickup and
post spindle pulley. If there is no readout
on the LED speed indicator after adjusting
the gap, replace the speed pickup.
*WARNING: Some corrections may require a qualified electrician.
Table 5
13.0 Replacement Parts
Replacement parts are listed on the following pages. To order parts or reach our service department, call 1-800-
274-6848, Monday through Friday, 8:00 a.m. to 5:00 p.m. CST. Having the Model Number and Serial Number of
your machine available when you call will allow us to serve you quickly and accurately.
Non-proprietary parts, such as fasteners, can be found at local hardware stores, or may be ordered from JET.
Some parts are shown for reference only, and may not be available individually.
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