Jet Tools J- A5818 用户手册
14
Troubleshooting
Problem
Probable Cause
Suggested Remedy
Spindle does
not turn.
not turn.
Circuit breaker tripped.
Branch circuit breaker tripped or fuse
blown.
blown.
Open wire in switch circuit.
Defective switch.
Broken drive
belt.
Reset circuit breaker.
Reset branch circuit breaker/replace fuse.
Repair open circuit.
Repair switch.
Replace drive belt.
Spindle noisy.
Damaged spindle bearings.
Worn spline.
Replace bearings.
Replace spline.
Drill stalls.
Worn drive belt.
Excessive feed rate for size of drill and
material being drilled.
material being drilled.
No cutting fluid or improper cutting fluid.
Check condition of belt. Replace
if glazed or
slipping on pulleys
Reduce feed pressure or use cutting fluid
Use correct cutting fluid.
Poorly drilled
holes.
holes.
Drill dull
Lack of rigidity in hold-down method.
Speed too fast for material and drill size.
Feed too fast for material and drill size.
No or improper cutting fluid or coolant
being used.
being used.
Improperly ground drill bit.
Sharpen drill.
Check that all T-slot hold-downs are tight and that
table-lock and drill head bolts are tight.
table-lock and drill head bolts are tight.
Check spindle speed recom mendations. Reduce
speed if necessary.
speed if necessary.
Reduce feed rate.
Use cutting fluid, or change to proper fluid or
coolant for material being drilled.
coolant for material being drilled.
Check for proper angles and reliefs. Regrind to
proper geometry.
proper geometry.
Motor
overheating
overheating
Electrical circuit fault.
Oversize drill.
Excessive feed.
No cutting fluid, or wrong fluid
Check current draw in circuit. Make sure current
draw is the same as rating on motor plate.
draw is the same as rating on motor plate.
Reduce drill size.
Reduce feed rate.
Use correct cutting fluid for the material and drill.
Table can not
be raised.
be raised.
Lack of lubrication
Lubricate.
No speed
readout.
readout.
Speed pickup out of adjustment or failed.
Adjust gap between speed pickup and post spindle
pulley. If there is no readout on the speed
indicator, replace the speed pickup.
pulley. If there is no readout on the speed
indicator, replace the speed pickup.
Parts
Ordering Replacement Parts
To order parts or reach our service department, call 1-800-274-6848 between 7:30 a.m. and 5:30 p.m. (CST),
Monday through Friday. Having the Model Number and Serial Number of your machine available when you call
will allow us to serve you quickly and accurately.
Monday through Friday. Having the Model Number and Serial Number of your machine available when you call
will allow us to serve you quickly and accurately.