KARAT
®
180
US
8
OPERATING MANUAL KARAT® 180
•
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.
Setting the speed range
CAUTION: Actuate the gear selector
switch only when the machine is at
a standstill.
The gear selector switch allows for pre-selection
of three speed ranges. Wet drilling in concrete:
Position
●
:
low speed for
bit range Ø3” - 7”
Position
● ●
:
medium speed for
bit range Ø1 1/2” - 3”
Position
● ● ●
: high speed for
bit range Ø5/16” - 1 1/2”
Ideal bit range for Karat 180 in reinforced concrete
is Ø5/8” - 6 1/4”.
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
WARNING: To avoid unintentional
starting of the machine, the ON/
OFF switch 2 is to be switched off
when the PRCD protective switch 4
releases.
Overload Protection
The 8 LED lights
1
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
3
is pressed, the machine runs for 10 seconds
at half speed. For that time the first LED then
lights up purple instead of blue.
NOTE: Use the soft starter only for a
short time at drilling start in the
surface to be drilled.
Slip clutch
With a clamping drill, the slip clutch is activated.
All LED lights could flash red. The machine is
switched off automatically. Carefully loosen the
drill. Never use the ON/OFF switch for this! You
can then calmly resume drilling.
Undervoltage protection
If the machine detects a too low supply voltage,
the machine is switched off. All LED lights will
then continue to lit blue.
Switch the machine off and on again.
HAND HELD DRILLING
WARNING: Use Karat 180 only in
combination with a drillstand when
drilling in position 1 (low speed).
WARNING: Pay attention on the
maximum drilling ranges when
drilling wet and dry with Karat 180:
Maximum bit diameters:
•
Wet drilling in concrete: Ø 1 1/2”
•
Dry drilling in masonry: Ø 7”.
Mounting the drill bit
•
Clean and grease the thread on the drill bit
31
and the drilling shaft
5
.
•
Screw a core bit
31
onto the drilling shaft
5
and tighten with supplied wrenches.
Hand held wet drilling
Connecting the water feed
•
Close the water tap
6
.
•
Connect the water feed hose to the water tap
or the water pressure tank.
•
When using the water pressure tank, make
sure that there is sufficient pressure when
working.
•
Check the waterflow indicator
9
.
