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7
Malfunctions
Malfunction
Spindle does not turn
It is not possible to lift the can-
tilever.
The spindle and the drilling
head leak oil.
Bit "burnt"
Drill tip is running off centre,
the drilled hole is non-round
Drill is defective
Drill is running non-round or
shaking
It is not possible to insert the
drill chuck or the taper man-
drel
Precision of the work deficient
Malfunctions
Version 1.0
2017-03-13
Cause/
possible effects
•
Motor protection switch has
released or is defective.
•
Supply voltage too low or a phase is
missing.
•
The switch on the clamping lever
does not release.
•
Position switch on the spindle
sleeve does not release.
•
Motor defective.
•
End position switch switches off
•
Motor defective.
•
Too much oil in the gear box above
•
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
•
Worn out spindle bearings
•
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
•
Positioning the follower in the drill
spindle is not considered
•
Irregularly heavy or tensed work-
piece
•
Inexact horizontal position of the
work-piece holder
Original operating instructions
OPTIMUM
M A S C H I N E N - G E R M A N Y
Solution
•
Check motor protective switch or
switch it on again if applicable.
•
Check supply tension
•
Check position switch clamping
lever.
•
Check position switch of the spin-
dle sleeve.
•
Check motor and replace it if
required.
•
Check end position switch
•
Check motor and replace it if
required.
•
Check oil level and reduce it if
required
•
Select another speed
•
Extract drill more often during work
•
Sharpen or
use new drill
•
Use cooling agent
•
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
•
Balance the piece statically and
secure without straining
•
Adjust workpiece-holder
RD5
GB
Page 75
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