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OBJ_BUCH-0000000261-003.book Page 19 Thursday, April 27, 2017 7:47 AM
For switching the magnet ON
(figure 10).
Pay attention that the set-up surface for the
magnetic foot is flat, clean, rust-free and ice-
free. Remove varnish, putty/filler layers and
other materials. Prevent an air gap between
the magnetic foot and the set-up surface. The
air gap reduces the magnetic holding power.
When working, always use the magnetic foot;
pay attention that the magnetic holding
power is sufficient:
– When the green button on the control
panel lights up permanently, the magnetic
holding power is sufficient and the machine
can be operated with normal feed.
– When the Magnet button on the control
panel flashes, the magnetic holding power
possibly is insufficient and the machine
must be operated with reduced feed.
When working on materials that are non-fer-
rous, suitable fixation devices obtainable as
accessories from the manufacturer, e. g. suc-
tion plates, vacuum plates or pipe-drilling
devices must be used.
When working on steel materials with a
material thickness of less than 12 mm /
the workpiece must be reinforced with an
additional steel plate in order to guarantee the
magnetic holding power.
Work only with the absolutely required
amount of feed. Excessive feed can lead to
breakage of the application tool and loss of
the magnetic holding power.
The magnetic foot is monitored by means of
a power sensor. If the magnetic foot is defec-
tive, the motor will not start.
When the power supply is disconnected
while the motor is running, a protective cir-
cuit prevents automatic 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 procedure. Remove the core drill bit
from the drill hole only while the drill motor
is running. If the core drill bit gets jammed/
stuck in the material, stop the drill motor and
carefully rotate out the core drill bit turning in
counterclockwise direction. After each drill-
ing run, remove the chips and the drilled out
core. Do not touch the chips with your bare
hands. Always use a chip hook. Danger of
burning! The surface of the magnet can reach
high temperatures. Do not touch the magnet
with your bare hands. When changing a drill
bit, pay attention not to damage the cutting
edges. When core-drilling layered material,
remove the core and the chips after having
drilled through each layer. Do not use the
magnetic core drill unit when the cooling-
lubricant system is defective. Check for tight-
ness against leaks and for cracks in the hoses.
Prevent liquids from entering or penetrating
electrical components. The core drill units do
not have overload protection. In case of
improper use, the motor can become dam-
aged.
Fig. 10
1
/
in,
2
Switches the magnet On/Off
en
Switches the magnet On/Off
=
=
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