Fein KBU 110-4 M Manual De Instrucciones página 33

OBJ_BUCH-0000000301-001.book Page 33 Monday, August 13, 2018 2:53 PM
Work only with the absolutely required amount of
feed. Excessive feed can lead to breakage of the applica-
tion tool and loss of the magnetic holding power.
When the power supply is disconnected while the
motor is running, a protective circuit prevents auto-
matic restarting of the motor. Restart the motor again.
Adjust the gear setting only when the machine is at a
complete stop or when the motor is running down.
Do not stop the drill motor during the drilling proce-
dure.
Only remove the core bit from the drilled 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 coun-
ter-clockwise.
Remove the chips and the drilled core after each drilling
process.
Error message/
Response of magnet signal lamp
Indicator lights up green
Indicator flashes (1 Hz)
Indicator flashes (5 Hz)
Overload temperature
Temperature range Meaning
Temperature > Tg1 Cooling speed very low, with-
out cooling capacity
Temperature < Tg1 Motor switches off and can be
restarted
Temperature > Tg2 Motor switches off, indicator
flashes at 5 Hz;
Motor must cool down below
Tg2 before restarting is possi-
ble
Temperature Cooling speed without cool-
between Tg1 and ing capacity
Tg2
Tg1, Tg2: Limit temperatures
If only reduced power is available when the motor is
started in LOW, the temperature sensor is defective. If
this occurs several times, contact the customer service.
Safety switch PRCD (see page 14)
The RCD safety switch is specifically for your protec-
tion; therefore, do not misuse it as on On/Off switch.
If the RCD safety switch is damaged, e.g. due to contact
with water, do not use it any more.
The RCD safety switch is indispensable; it is used for
protection of the power tool operator against electric
shock. Under fault-free operation, the control lamp of
the RCD safety switch lights up red.
When changing a drill bit, pay attention not to damage
the cutting edges.
When core drilling layered material, remove the core
and the chippings after drilling each layer.
Do not use the magnetic core drill unit when the cool-
ing-lubricant system is defective. Each time before oper-
ating, check for tightness against leaks and for cracks in
the hoses. Prevent liquids from entering or penetrating
electrical components.
Meaning
Magnetic holding power possibly
sufficient.
Magnetic holding power possibly
insufficient.
– Magnet defective
– Incorrect mains voltage
– Motor temperature too high
Check the operability of the RCD safety switch before
beginning to work:
1. Connect the plug of the RCD safety switch with the
mains socket outlet.
2. Press the RESET–button. The indication light on the
RCD safety switch lights up red.
3. Disconnect the plug from the socket outlet. The red
indication light goes out.
4. Repeat steps 1. and 2.
5. Press the TEST–button; the red indication light goes
out. If the red indication light does not go out, do not
run the machine. In this case, contact the customer serv-
ice.
6. Press the RESET–button; when the indication light
lights up red, the machine can now be switched on.
Do not use the RCD safety switch for switching the
power tool on and off.
Repair and customer service.
tool. The total insulation of the power tool can be
impaired. Blow out the interior of the power tool via
the ventilation slots frequently with dry and oil-free
compressed air.
Renew stickers and warning indications on the power
tool when aged and worn.
Do not touch the chips with your bare hands.
Always use a chip hook (6 42 01 001 00 0).
Danger of burning! The surface of the magnet can
reach high temperatures. Do not touch the mag-
net with your bare hands.
Corrective Action
Even when working on steel materials
where the material thickness is below
12 mm, the work piece must be made
thicker with an additional steel plate in
order to ensure the magnetic holding
power.
– Repair magnet
– Ensure correct mains voltage
– Allow motor to cool down
When working metal under extreme operat-
ing conditions, it is possible for conductive
dust to settle in the interior of the power
en
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