KBM 52 U / KBM 50 Q
19
EN
Reducing the speed (KBM 52 U, Figure 10):
Changing the speed is only effective for clock-
wise rotation. In anti-clockwise rotation the
motor runs at a constant reduced speed.
➤
Start the motor in clockwise rotation.
Reducing the speed:
➤
Press the “slow” button (10).
For maintaining the speed:
➤
Let go of the “slow” button (10).
For further reducing the speed:
➤
Press the “slow” button (10) once again.
Storing the set speed value:
The value of the speed last set is automatically
stored.
Starting with the stored speed value:
➤
Press the “slow” button (10) and briefly
tap the
“R”
(clockwise rotation) on the
motor switch (9).
Putting out of operation:
➤
Switch the magnet off by pressing the
main switch (11).
Instructions:
– The magnetic foot (4) is monitored by a cur-
rent sensor. If the magnetic foot is defective
the motor will not start.
– The motor automatically switches off in the
case of overload. It can be restarted with
motor switch (9).
– If the current supply is interrupted while the
motor is running, a protection circuit prevents
the motor from restarting automatically. The
motor has to be restarted with motor
switch (9).
Working instructions for core drilling.
➤
Punch-mark the drilling place marked.
➤
Position the drill bit with the centering
pin (18e) on the punch-mark.
➤
Carefully start boring until a circular cut
is formed.
Do not stop the drill motor during the
drilling procedure.
Only remove the core bit from of the drill-
ing hole while the motor is running.
➤
If the core bit should remain stuck in the
material, stop the drill motor and carefully
turn the core bit out anti-clockwise.
Remove the chippings and the bored core
after each drilling process.
Do not touch the chippings with your bare
hand. Always use a chip hook.
Do not damage the cutters when changing
the bit.
➤
When core drilling layered material,
remove the core and the chippings after
drilling each layer.
Repair and customer service.
Regular cleaning.
Carry out the following steps once a week, or
more often if used frequently:
➤
Clean the cooling air vents.
Use non-metallic tools to clean the air vents.
➤
Blow out the interior of the power tool
from outside through the air vents with
dry, compressed air.
If required, you can change the following parts
yourself:
– Application tools
– Coolant container (18j)
– Coolant tube (18l)
For repairs, we recommend our FEIN customer
service centre, the FEIN authorised service cen-
tres and FEIN agencies. For addresses, see the
enclosed “General Safety Instructions”.
When carrying out your own repairs by quali-
fied electricians we supply the repair documen-
tation upon request.
Repairs may only be carried out by quali-
fied electricians in conformity with the
valid regulations.
Please always hand this Instruction Manual
to the those carrying out the repair.
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