In Case of Malfunction
In case of breakdown, switch the motor off and
disconnect it from the power. Repairs of the electrical
parts may only be performed by an authorised service
specialist.
Trouble Shooting
Error
machine does not
work
motor runs, drill bit
does not rotate
drilling speed too
slow
motor cuts off
water drops out of the
gearbox housing
drilling system has
too much backlash
Possible Cause
mains current supply interrupted
line cord or plug damaged
switch damaged
the PRCD-switch is off
gearbox damaged
water pressure / water flow rate
too high
drill bit damaged
gearbox damaged
drill bit is blunt
the tool stops
the tool overheats, overload
protection of the motor has
reacted
shaft sealing rings damaged
guidance has too much backlash
Error Recovery
plug in another electric appliance
and check the functioning
have it checked by an electric
specialist and replaced if
necessary
have it checked by an electric
specialist and replaced if
necessary
press RESET to switch on
have the tool repaired by an
authorised service workshop
regulate the water quantity
check if drill bit is damaged and
replace it if necessary
have the tool repaired by an
authorised service workshop
sharpen the drill bit with a
sharpening block while using the
flush
lead the tool in a straight manner
discharge the tool and restart it by
pressing the switch
have the tool repaired by an
authorised service workshop
readjust the guidance
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