Scheppach DP18VARIO Original Bedienungsanleitung Seite 38

15. Troubleshooting
Warning:
Always switch the machine off and pull the plug out of the socket prior to troubleshooting.
Fault
The axle moves into its starting
position too quickly or too slowly
The chuck always comes loose
from the spindle despite continued
tightening
High noise level during operation
The drill bit wears out
The drill bit slips or the hole is not
round
The drill bit gets stuck in the
workpiece
The drill bit drifts and vibrates
excessively
38 | GB
Possible cause
The spring pre-tension is set
incorrectly
Dirt, grease or oil on the spindle
or the inside of the chuck
Incorrect V-belt tension
The spindle is too dry
The pulley on the spindle is
loose
The pulley on the motor is loose
Incorrect speed
No chips come out of the hole
The drill bit is blunt.
Insufficient downward pressure
Hard places in the wood or the
length and angle of the drill bit
is different
The drill bit is bent
The workpiece and drill bit
are twisted or the downward
pressure is too great
Insufficient V-belt tension
The drill bit is bent
The spindle bearing is worn
excessively
The drill bit is not clamped
centrally in the chuck
The chuck is not fastened
correctly
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Remedy
Set the pre-tension, see "Setting the
spindle return spring"
Use a household cleaning agent to
clean the surface of the spindle and the
chuck. Also see "Installing the chuck"
Set the V-belt tension again. Also see
"Setting the speed and V-belt tension"
Test the spindle
Check that the nuts on the pulley are
tight and re-tighten if necessary
Tighten the set screw on the motor
pulley
Change the speed. Also see "Selecting
the speed and V-belt tension"
Move the drill bit out of the hole regularly
in order to pull the chips out
Sharpen the drill
Increase the downward pressure
Sharpen the drill
Replace the drill bit
Place something underneath the
workpiece or secure it. Also see
"Positioning the workpiece"
Set the V-belt tension. Also see
"Selecting the speed and V-belt tension"
Use a straight drill bit
Have the spindle bearing replaced
Check the centring. Also see "Inserting
the tool into the chuck"
Fasten the chuck correctly. Also see
"Installing the chuck"