Malfunctions - Optimum OPTidrill DQ 14 Betriebsanleitung

7

Malfunctions

Malfunction
Noise during work.
Bit „burnt"
Drill point runs off, drilled hole
is not circular.
Drill is running non-round or
shaking
The drill chuck or the Morse
taper MT2 / B16 cannot be
inserted or does not hold in
the taper by itself.
Motor does not start.
Motor runs only if the push
button "On" is pressed
permanently.
Motor overheated and no
power
Precision of the work deficient
Drilling spindle sleeve does
not return to its initial position
Malfunctions
Version 1.0.3 - 2022-04-06
Cause/
possible effects
• Tool blunt or incorrectly clamped.

• Grease at the toothing of the
spindle used up
• Spindle bearing defective
• Bearing in idler pulley V-belt at
DQ22 defective
• Pulley on the motor has come
loose.
• Incorrect speed
• Chips are not coming out of the
drilled hole.
• Blunt drill bit.
• Operating without cooling agent.
• Hard material or length of the
cutting spirals/or angles on the tool
are unequal
• Drill bit is bent.
• Drill bit is bent.
• 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
• On DQ22, drill chuck protection not
closed
• Protective cover V-belt not closed
• Defective control fuse (microfuse)
on DQ22
• Relay restart protection defective.
• Motor overloaded?
• Too low mains voltage
• Motor incorrectly connected (DQ22
400V three-phase current)
• Heavy and unbalanced or deformed
work-piece.
• Inexact horizontal position of the
work-piece holder.
• Spindle return spring
Translation of original instruction
Solution
• Use new tool and check tension (fixed
setting of the bit, drill chuck and taper
mandril)

• Put grease in, Toothing of the
spindle on page 81
• Have permanently lubricated spindle
bearings replaced by qualified
personnel.
• Check the fastening of the pulley,
tighten the fastening nut.
• Choose a different speed, excessive
feed.
• Retract the drill bit from the bore hole
more often.
• Sharpen the drill bit or insert new drill
bit.
• Use coolant.
• Use a new drill bit.
• Replace drill bit
• Clamp the drill bit properly.
• Replace the drill bit chuck.
• Clean surfaces well.
• Keep surfaces free from grease.
• Close drill chuck guard at DQ22
• Close protective cover of V-belt
• Check control fuse on DQ22 and
replace if necessary (DQ14 and DQ18

have no control fuse)
DQ22 - fine-wire fuse" on page 82
• Have On / Off switch KJD17B replaced
by qualified personnel.
• Switch off immediately and have it
checked by qualified personnel
• Balance the piece statically and secure
without straining
• Adjust workpiece-holder

• „Img. 6-4: Spindle return spring" on
page 80
DQ14 | DQ18 | DQ22
„Img. 6-6:
EN
83