10
USER MANUAL v1.2
JEFPDB0750-12S
750W
Pillar Drill • 12-Speed • 230V ~50Hz
www.jeffersontools.com
Troubleshooting
PROBLEM
POSSIBLE CAUSE
SOLUTION
Noisy operation
(under load)
a. Incorrect belt tension
b. Dry spindle
c. Loose pulley
d. Loose belt
e. Worn bearing
a. Adjust tension
b. Remove spindle and quill assembly and lubricate
c. Tighten pulley
d. Adjust belt tension
e. Replace bearing
Excessive drill wobble
a. Loose chuck
b. Worn spindle or bearing
c. Worn chuck
d. Bent drill bit
a. Tighten the chuck by pressing it down on to a block of wood against
the table
b. Replace the spindle shaft or bearing
c. Replace the chuck
d. Renew the drill bit
Motor wont start
a. Power supply
b. Motor connection
c. Switch connection
d. Faulty switch.
e. Motor windings burned
f. Pulley cover not closed
g. Micro switch on cover is
not operating correctly
a. Check power cord/fuse.
b. Check motor connections.
c. Check switch connections.
d. Replace switch.
e. Replace motor.
f. Close pulley cover.
g. Check operation of micro switch, and renew /
adjust as necessary.
Drill binds in the
workpiece
a. Excessive feed pressure
b. Loose belt
c. Loose drill
d. Incorrect bit speed
e. Drill angles incorrect
for type of material
a. Apply less pressure
b. Check belt tension
c. Tighten drill with key
d. Adjust the drill speed reasonably
e. Consult a technical manual dealing with materials, drills and cutting
angles, and sharpen drill
accordingly.
Drill bit burns or smokes
a. Incorrect speed
b. Swarf is not discharging
c. Dull drill or not proper
clearance for material
d. Needs coolant
e. Excessive feed pressure
a. Adjust drill speed accordingly
b. Clean drill
c. Check sharpness & taper
d. Use coolant whilst drilling
e. Apply less pressure
Table is difficut to raise
a. Needs lubrication
b. Table lock tightened
a. Lubricate with light oil
b. Loosen clamp
