Malfunctions - Optimum OPTI DRILL B20 Operating Manual

6

Malfunctions

Malfunction
Noise during work.
Bit „burnt"
Drill tip is running off centre,
the drilled hole is non-round
Drill is defective
Drill is running non-round or
shaking
The drill chuck or the taper
mandrel cannot be inserted.
Motor does not start.
Motor is overheating and there
is no power
Precision of the work deficient
Drilling spindle sleeve does not
return to its initial position
The drilling sleeve may not be
moved downwards.
Version 1.0 - 2020-08-11
Cause/
possible effects
• Spindle is too little lubricated
• Tool is blunt or wrongly
clamped
• Drill speed too high /feed too
high
• Chips do not come out of the
drill hole.
• Drill blunt
• No or too little cooling
• Hard points on the workpiece
• Length of the cutting spirals/or
angles on the tool are unequal
• Drill deformed
• No base / support used.
• Bit deformed
• Bearing worn down
• Drill is not correctly clamped.
• Drill chuck defective
• Dirt, grease or oil on the taper
inside of the drill chuck or on
the taper surface of the drill
spindle
• Motor is wrongly connected
• Fuse is defective
• Motor overloaded?
• Too low mains voltage
• Motor is wrongly connected
• Irregularly heavy or tensed
workpiece
• Inexact horizontal position of
the work-piece holder
• Spindle return spring does not
work
• Locking bolt inserted
• Locking bolt inserted
• Drill depth adjustment no
released
Translation of original instruction
Solution
• Grease spindle
• Use new tool and check tension
(fixed setting of the bit, drill chuck
and taper mandril)
• Select another speed
• Extract drill more often during work
• Sharpen or
use new drill
• Use coolant.
• Use new drill
• Use support and clamp it with the
workpiece
• Use new drill
• Have the spindle bearings replaced
• Correctly clamp drill
• Replace the drill chuck
• Clean surfaces well
• Keep surfaces free of grease
• Have it checked by qualified
• Reduce feed
Disconnect immediately and have it
checked by authorized personnel
• Have it checked by qualified
• Balance the piece statically and
secure without straining
• Adjust workpiece-holder
• Check spindle return spring, replace
it, if necessary
• Pull out locking pin
• Pull out locking pin
• Release drill depth adjustment
B20 EN
37