Jet J-2210, Инструкция по эксплуатации и каталог запасных частей

Страница: 14 / 24

14
Troubleshooting
Trouble Probable Cause Remedy
Motor overload protector tripped. Press motor overload reset button.
Circuit breaker tripped. Re-set circuit breaker.
Branch circuit breaker tripped or fuse
blown. Re-set branch circuit breaker/replace
fuse.
Open wire in switch circuit. Repair open circuit.
Defective switch. Replace switch.
Spindle does not turn.
Broken drive belt. Replace drive belt.
Damaged spindle bearings. Replace bearings.
Spindle is noisy.
Worn spline. Replace spline.
Worn drive belt.
Check condition of belt. Replace if glazed
or slipping on pulleys.
Drill stalls.
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.
Drill is dull. 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 fluid, or improper cutting fluid or
coolant being used. Use cutting fluid, or change to proper fluid
or coolant for material being drilled.
Poorly drilled holes.
Improperly ground drill bit.
Check for proper angles and reliefs. Re-
grind to proper geometry, or replace.
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 rate. Reduce feed rate.
Motor overheating.
No cutting fluid, or incorrect type of fluid.
Use correct cutting fluid for the material
and drill.
Table can not be raised. Lack of lubrication. Lubricate. See page 12.
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.
NOTE:
This adjustment should be made by a
qualified technician.