Troubleshooting The J-1230R - Jet J-1230R Operating Instructions And Parts Manual

11.0 Troubleshooting the J-1230R

Trouble
Spindle overloads,
causing relay to trip.
Spindle overloads,
causing fuse to blow.
If drill bit gets broken in the spindle:
1. Move arm/spindle control lever to neutral.
2. Press emergency stop button.
3. Push the head/gearbox out of the way.
4. Pinch the end of the broken bit with pliers.
5. Rotate counterclockwise and pull it out upwards.
If screw tap gets broken in the spindle:
1. Move arm/spindle control lever to neutral.
2. Press emergency stop button.
3. Using a thread releaser, rotate the screw tap counterclockwise until it comes out.
If something becomes entangled during operation:
1. Press emergency stop button.
2. Disconnect power.
3. Switch speed change lever to highest gear.
4. Rotate spindle by hand in reverse direction from that used during the operation, until the obstruction
is free.
Probable Cause
Drill bit is too large.
Feed rate too fast.
Operation not in compliance with speed
and feed rate tables.
Fuse is burned out.
Low voltage.
Drill bit is too large.
Feed rate too fast.
Operation not in compliance with speed
and feed rate tables.
Suggested Remedy
Turn off power, wait three minutes after
spindle stops turning, then push the re-set
on the relay in the control box.
Correct initial problem by using shorter
drill bit or lower feed rate; consult
appropriate feed and speed rate tables.
Replace fuse if needed. Verify proper
voltage at power source.
Replace fuse in control box.
Correct initial problem by using smaller
drill bit or lower feed rate; consult
appropriate feed and speed rate tables.
Table 4
25