Femi JOB LINE DIGITO ML 350, Руководство пользователя, Страница: 130 / 196

130
EN TROUBLESHOOTING
PROBLEM /
FAULT
PROBABLE CAUSE SUGGESTED REMEDY
Machine does
not start or a
circuit breaker
trips.
1. Emergency stop button
engaged or at fault.
2. Variable speed dial in
OFF position or at fault.
3. Spindle direction switch
turned to "0" or at fault.
4. Blown fuse.
5. Incorrect power supply
voltage.
6. Power supply circuit
breaker tripped or fuse
blown.
7. Wiring open/has high
resistance.
8. Motor brushes at fault.
9. On/Off switch at fault.
1. Release the emergency stop button. Press
On button to reset; replace if not working
properly.
2. Turn variable speed dial past "0". Ensure dial
has correct voltage. Replace if faulty.
3. Turn spindle direction switch to "F" or "R".
Ensure dial has correct voltage. Replace if
faulty.
4. Replace fuse/ensure no shorts.
5. Ensure correct power supply voltage.
6. Ensure circuit is sized correctly and free of
shorts. Reset circuit breaker or replace fuse.
7. Check/fi x broken, disconnected, or corroded
wires.
8. Remove/replace brushes.
9. Replace switch.
10. Test/repair/replace.
Machine
stalls or is
underpowered.
1. Feed rate/cutting speed
too fast.
2. Wrong workpiece
material.
3. Machine undersized for
task.
4. Motor overheated.
5. Computer board at fault.
6. Motor speed dial at fault.
7. Timing belt slipping.
8. Motor brushes at fault.
9. Pulley/sprocket slipping
on shaft.
1. Decrease feed rate/cutting speed.
2. Use correct type/size of metal.
3. Inspect and replace if at fault.
4. Use sharp bits; reduce feed rate/depth of cut.
5. Clean motor, let cool, and reduce workload.
6. Test and replace if at fault.
7. Tension/replace belt; ensure pulleys are
aligned.
8. Remove/replace brushes.
9. Replace loose pulley/shaft.
10. Test/repair/replace.
Machine has
vibration or
noisy operation.
1. Motor or component
loose.
2. Pulley loose.
3. Motor fan rubbing on fan
cover.
4. Motor bearings at fault.
5. Cutting tool chattering.
6. Workpiece or chuck at
fault.
1. Inspect/replace damaged bolts/nuts, and
retighten with thread locking fl uid.
2. Realign/replace shaft, pulley, setscrew, and
key.
3. Fix/replace fan cover; replace loose/
damaged fan.
4. Test by rotating shaft; rotational grinding/
loose shaft requires bearing replacement.
5. Replace/sharpen cutting tool; index tool to
spindle centerline; use correct feed rate and
cutting RPM.
6. Properly secure or center workpiece in chuck
or faceplate; replace defective chuck.
Bad surface
finish.
1. Wrong spindle speed or
feed rate.
2. Dull tooling or wrong tool
selection.
3. Tool height not at spindle
centerline.
4. Too much play in gibs.
1. Adjust for appropriate spindle speed and
feed rate.
2. Sharpen tooling or select a better tool for the
intended operation.
3. Adjust tool height to spindle centerline.
4. Tighten gibs.
Tapered tool
difficult to
remove from
tailstock quill.
1. Quill not fully retracted
into tailstock.
2. Contaminants not
removed from taper
before inserting into quill.
1. Turn quill handwheel until tapered tool is
forced out of quill.
2. Clean taper and bore, then re-install tool.