OPTIMUM
MASCHINEN - GERMANY
Malfunctions
Version 1.1.5 dated 2015-08-31 Page 63Original operating instructions
BF30Vario GB
7 Malfunctions
7.1 Malfunctions on the drilling-milling machine
Malfunction Cause / possible effects Solution
The drilling-milling machine
does not start
• Power-on sequence ignored. • "Switching on the drilling-mill-
ing machine“ on page 28
• Have it checked by authorised per-
sonnel.
Tool "burnt". • Incorrect speed.
• Chips do not come out of the bore hole
• Tool blunt.
• Operating without cooling agent.
• Select another rate, feed too high.
• Pull out tool more often.
• Sharpen or replace tool.
• Use cooling agent
Impossible to insert grip cone
into the spindle sleeve.
• Remove any dirt, grease or oil from the
internal conical surface of the spindle
sleeve or the grip cone.
• Clean surfaces well
Keep surfaces free of grease.
It is not possible to push-out
the taper.
• Optional MT3 taper is shrinked on the
Morse taper.
• Let the machine run at highest
speed for two minutes in order to
warm it up and then retry to disas-
semble the taper.
Motor does not start • Defective fuse. • Have it checked by authorised per-
sonnel.
Working spindle rattling on
rough piece surfaces
• Climb milling machining not possible
under the current operating conditions.
• Clamping lever of the movement axes
not tightened.
• Loose collet chuck, loose drill chuck,
loose draw-in rod.
• Tool is blunt.
• The workpiece is not fastened.
• Excessive slack in bearing.
• Working spindle goes up and down.
• Perform conventional milling.
• Tighten clamping lever
• Check, re-tighten.
• Sharpen or replace tool
• Clamp the workpiece firmly.
• Readjust bearing slack or replace
bearing
• Readjust bearing slack or replace
bearing
Fine feed of the spindle sleeve
does not work
• Fine feed is not correctly activated.
• Coupling of the fine feed does not
cam-in, is soiled, blurred, worn, defec-
tive
•
"Manual spindle sleeve feed
with the fine feed“ on page 32
• Clean, replace.
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