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Beschikbare talen
Beschikbare talen
GB
INTENDED USE
The machine is intended for drilling into concrete
and reinforced concrete, when being used in con-
junction with diamond core bits for wet drilling
and a suitable water supply. Karat 350 can also be
used for dry drilling in masonry and other build-
ing materials with the dry drilling kit.
For damage caused by usage other then
intended, the user is responsible.
WARNING: Never use the tool with-
out the PRCD protective switch
provided with the tool.
BEFORE USE
When drilling through walls or floors, make
absolutely sure that there are no obstacles
in the adjoining rooms and cordon off the
building site. Prevent the drilling core from
falling.
Always use the correct supply voltage: The
power supply voltage must match the informa-
tion quoted on the tool identification plate.
INITIAL OPERATION
Functional test for the PRCD protective
switch
WARNING: The ON/OFF switch 1
must be switched off, in order to
avoid unintentional starting of the
machine when carrying out the
functional test of the PRCD protec-
tive switch 8.
Before commencing work, check that the PRCD
protective switch is functioning properly:
•
Press the «RESET» button on the PRCD pro-
tective switch. The red control lamp indicates
when the protective switch is ready for
operation.
•
Press the «TEST» button. The control lamp
must go off.
18
OPERATING MANUAL KARAT® 350
KARAT
®
Setting the speed range
The gear selector switch 5 allows for pre-selection
of three speed ranges. Wet drilling in concrete:
Position ●:
Position ● ●:
Position ● ● ●:
Ideal bit range for Karat 350 in reinforced concrete
is Ø40 - 300 mm.
For a smooth switch to another position, move
the drill shaft by hand or by supplied wrench and
turn the switch to the desired position.
Switching On/Off
Overload Protection
The 8 LED lights 3 indicates the motor load,
whereby the following conditions are distin-
guished:
2x blue: No load/small drilling load
4x green: Regular drilling load
2x red: Overload
Excessive overloading the motor will pulsating
reduce the speed 6 times electronically to warn
the operator. The LED lights will flash red-green/
green-red en then remain red. The motor switches
off automatically and can immediately be
switched back on again.
Soft starter
An easy drill start of the surface to be drilled is
with this facilitated.
First switch on the machine. If the soft starter but-
ton 2 is pressed, the machine runs for 10 seconds
at half speed. For that time the first LED then
lights up purple instead of blue.
350
CAUTION: Actuate the gear selector
switch only when the machine is at
a standstill.
low speed for
bit range Ø160 - 350 mm
medium speed for
bit range Ø80 - 160 mm
high speed for
bit range Ø25 - 80 mm
WARNING: To avoid unintentional
starting of the machine, the ON/
OFF switch 1 is to be switched off
when the PRCD protective switch 8
releases.
NOTE: Use the soft starter only for a
short time at drilling start in the
surface to be drilled.
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