Jet JDPE-20EVS-PDF, Operating Instructions And Parts Manual

Page: 15 / 28

15
10.0 Troubleshooting JDPE-20EVS-PDF series Drill Presses
Symptom Possible Cause Correction *
Drill Press will not start.
E-stop still engaged. Release E-stop by rotating button clockwise.
Disconnected from power. Check plug connection. Check if branch circuit
breaker has been tripped, or fuse blown. Reset
breaker or replace fuse.
Damaged power cord or plug. Replace cord and plug.
Motor overheated, tripping thermal
relay. Allow motor to cool, then restart.
Open wire in switch circuit. Repair open circuit.
Defective switch. Replace switch.
Broken drive belt(s). Replace drive belt(s).
Motor runs, but spindle
does not turn.
Belts not tensioned. Engage latch to tension belts.
Broken belt. Replace belt.
Open wire in switch circuit. Repair open circuit.
Defective switch. Replace switch.
Drill does not come up
to speed, or stalls.
Excessive feed rate for size of drill
and material being drilled. No
cutting fluid or improper cutting
fluid. Reduce feed pressure or use correct cutting
fluid.
Insufficient power due to extension
cord Replace with adequate size and length
cord. Optimally, locate machine near power
source.
Worn drive belt. Check condition of belt. Replace if glazed or
slipping on pulleys.
Low current. Contact a qualified electrician.
Excessive noise or
vibration while
operating.
Base on uneven surface. Adjust machine so that it rests evenly on floor.
Belt not tensioned properly. Adjust belt tension.
Faulty belt(s). Replace belts.
Dry spindle. Lubricate spindle splines and quill.
Loose spindle pulley. Check tightness of retaining nut on pulley.
Loose motor pulley. Tighten setscrews in pulley.
Worn or damaged spindle
bearings. Replace bearings.
Damaged splines. Replace spindle.
Poorly drilled holes.
Drill is dull, or improperly ground Sharpen drill. Check for proper angles and
reliefs. Regrind to proper geometry.
Lack of rigidity in hold-down
method. Check that all T-slot hold-downs and the table-
lock 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 being
used. Use proper cutting fluid for material being drilled.
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 cannot be raised. Lack of lubrication.
Make sure that rack, column and crank handle
worm gear are properly cleaned and lubricated.
No speed readout.
Speed pickup out of adjustment or
failed.
Adjust gap between speed sensor and spindle
pulley bolts to approximately 1/16”. If there is no
readout on the LED speed indicator after
adjusting the gap, replace the sensor.