Malfunctions
quantum
MASCHINEN - GERMANY
© 2007
GB
Page 54 Drilling machine B 13 / B14 / B16 / B20 / B25 / B32 Version 1.2.5 18 / 01 / 2008
7 Malfunctions
Malfunction
Cause/
possible effects
Solution
FI protective switch dis-
engages
• a non-common FI protective
switch is used
• „Power supply“ on page 21
Noise during working
• Spindle turning dry.
• Tool blunt or is being incorrectly
secured.
• Grease spindle
• Use new tool and check secur-
ing (fixed setting of the bit, drill
chuck and morse taper).
Bit "burnt"
• Incorrect speed/ feed too fast
• The chips have not been
removed from the bore hole
•Bit blunt
• Operating without or too little
cooling agent
• Select another speed
• Extract the bit more often
• Sharpen or replace bit
• Use coolant
Bit tip moves, bore hole
is not circular
• Hard fibre in the workpiece
• unequal length of the cutting spi-
ral or unequal angles in the bit.
• Bit deformed
• Replace bit or re-sharpen it
Defective bit
• No support used • Place a wooden board beneath
the workpiece and secure them
to one another
Bit running off-centre or
„hopping“
• Bit deformed
• Bearings worn down
• Bit badly secured
• Drill chuck defective
• Replace bit
• Have the bearings replaced
• Secure the bit properly
• Replace the drill chuck
Impossible to introduce
drill chuck or morse taper
• There is dirt, grease or oil on the
inner conical surface of the drill
chuck or on the conical surface of
the drilling spindle
• Clean surfaces well
• Keep surfaces free of grease
Engine does not start
• engine connected wrongly
• Defective fuse
• Have it checked by authorized
personnel
Overheating of motor and
lack of power
• Engine overloaded
• Insufficient mains voltage
• Engine connected wrongly
• Disconnect immediately and
have it checked by authorized
personnel
• Have it checked by authorized
personnel
Precision of the work
deficient
• Heavy and unbalanced or twisted
workpiece
• Inexact horizontal position of the
workpiece holder
• Balance workpiece statically and
secure it without straining
• Adjust workpiece holder
Drilling spindle sleeve
does not return to its ini-
tial position
• Spindle restoring spring does not
work properly
• locking pin is being introduced
• Check spindle restoring spring,
replace it, if necessary
• pull out locking pin
The drilling sleeve may
not be moved down-
wards.
• The locking pin is introduced
• The drill depth setting is not
released
• Pull out the locking pin
• Release the drill depth setting
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