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7.2.2 Vacuum cleaner with power socket for electric
tools
The vacuum cleaner starts automatically after switch-
ing on the electric tool. Switching off the electric tool
also causes the vacuum cleaner to be switched off after
a short delay.
Switching on
1. Press the on / off switch on the tool.
2. With the hole-starting aid fitted, begin drilling and
continue until the projecting segments have estab-
lished a kerf in the base material.
3. Switch the tool off.
4. Remove the hole-starting aid and continue drilling.
Switching off
1. Switch the tool off.
2. Remove the core if necessary.
7.2.3 Vacuum cleaner without power socket for elec-
tric tools
Switching on
1. Switch the vacuum cleaner on.
2. Press the on / off switch on the tool.
Switching off
1. Switch the tool off.
2. Allow the vacuum cleaner to run for a short time in
order to remove remaining dust before switching off.
7.3 Hand-held wet drilling
Switching on
1. Open the water valve in the side handle until the desired
water volume flows. The water flow volume can be
observed at the indicator on the hand grip.
2. Press the on / off switch
3. When starting a hole, hold the tool at a slight angle
to the work surface. This makes hole-starting easier.
4. Once the hole has been started, bring the tool into the
90° position and continue drilling.
Switching off
1. Switch the tool off.
2. Close the water valve on the side handle.
7.4 Hand-held wet drilling using the water collection
system
The crosshair marks at the front end of the water col-
lection system serve as an accurate positioning aid.
Switching on
1. Switch on the water extraction system (if used).
2. Open the water valve on the side handle slowly until
the desired water volume flows. Use the indicator on
the side handle to check the water flow rate.
3. Press the on / off switch.
4. Hold the tool at a slight angle to the work surface
when starting a hole. This makes hole-starting easi-
er.
5. After starting the hole, bring the tool into the 90° posi-
tion and continue drilling.
Switching off
1. Switch the tool off.
Caution: When drilling overhead, any water remain-
ing in the core bit must not be allowed to run down
over the tool.
2. Close the water valve on the side handle.
3. Switch off the vacuum cleaner (if used).
4. Remove the core if necessary.
7.5 Wet drilling using the drill stand
Switching on
1. Switch on the (wet) vacuum cleaner (if used).
2. Open the water valve at the side handle slowly until
the desired volume of water flows. The indicator at
the side handle can be used to check the water flow
rate.
3. Use the switch actuator to run the tool in sustained
operation mode.
4. Release the chain arrestor.
5. Bring the core bit into contact with the work surface
by turning the hand wheel.
6. Apply only slight pressure to the core bit when begin-
ning drilling and then increase pressure once the core
bit has become centred.
7. Keep an eye on the overload indicator while drilling.
Pressure on the core bit must be reduced if the over-
load indicator lights.
Switching off
1. Close the water regulation valve at the side handle.
2. Pull the core bit out of the hole.
3. Engage the chain arrestor.
4. Switch the tool off.
5. Switch off the vacuum cleaner (if used).
6. Remove the core if necessary.
7. Switch the tool off.
Caution: When drilling overhead, any water remain-
ing in the core bit must not be allowed to run down
over the tool.
8. Ensure stability of the drill stand by lowering the tool
and core bit to the baseplate.
8. Care and maintenance
Disconnect the supply cord plug from the socket.
8.1 Care of core bits
Remove any dirt adhering to the core bits and protect
their surfaces from corrosion by rubbing them with an
oily cloth from time to time. Always keep the connec-
tion end clean and slightly greased.
8.2 Care of the tool
Check that the supply cord plug is disconnected.
Never operate the tool if its ventilation slots are blocked.
Clean the ventilation slots carefully with a dry brush. Do
not allow foreign objects to enter the interior of the tool.
Clean the outside surfaces of the tool with a damp cloth
