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Trouble Shooting
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
Possible Cause
Machine does not
mains current supply interrupted
work.
line cord or plug damaged
switch damaged
the PRCD-switch is off
motor runs, drill bit
Gear not engaged properly or
does not rotate
accidentally disengaged
gearbox damaged
drilling speed too
drill bit damaged
slow
A too high water flow rate
prevents self-sharpening of the
drill bit
drill bit polished
motor shuts down
the tool stops
the tool overheats, overload
protection of the motor has
reacted
carbon brushes are worn out -
auto-stop brush switch off
water drops out of
shaft sealing rings damaged
the gearbox housing
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
Operate the gear switch to
engage the required gear
have the tool repaired by an
authorised service workshop
check if drill bit is damaged and
replace it if necessary
regulate the water quantity
sharpen the drill bit with a
sharpening stick while using the
flush
lead the tool in a straight
manner
discharge the tool and restart it
by pressing the switch a couple
of times
both brushes must be replaced
with original brushes by an
electrical specialist
have the tool repaired by an
authorised service workshop
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