Breaks Between Work And Storage At Low Temperatures; Drilling In Manual Mode; Disassembly, Transport And Storage; Care And Maintenance - Hilti DD AF-CA Manual De Instrucciones

1. Start the water flow by pressing the manual mode
button and then wait until water flows out at the core
bit.
2. Activate the Cut Assist mode.
3. If necessary, adjust drilling power by pressing the
Cut Assist button.
en
NOTE For more information about controlling drilling
power, please refer to the section describing the
controls and indicators.
4. Start the drilling operation as described in the oper-
ating instructions for the core drilling machine.
5. End the drilling operation as described in the oper-
ating instructions for the core drilling machine.

6.3 Drilling in manual mode

1. Press the manual mode button on the drilling feed
unit.
This starts the water flowing, i.e. water flows through
the cooling circuit for the core drilling machine and
flows out through core bit.

7 Disassembly, transport and storage

7.1 Dismantling the drilling feed unit 4
The drilling feed unit can be dismantled independently of
the core drilling machine.
Dismantle the drilling feed unit as follows:
1. Separate the protective caps for the connecting
cable and connector, which are fitted into each
other.
2. Unplug the connecting cable for the drilling feed unit
from the connector on the core drilling machine.
3. Fit the protective caps to the connecting cable and
to the connector.
4. Disconnect the water hose that runs to the core
drilling machine.
5. Lock the carriage.

8 Care and maintenance

CAUTION
Unplug the core drilling machine's supply cord from
the power outlet.
8
2. Carry out the manual drilling operation as described
in the operating instructions for the core drilling
machine.
6.4 Breaks between work and storage at low
temperatures
DANGER
At temperatures below 4°C (39°F) the water in the
cooling circuit must be blown out with compressed
air when drilling is interrupted for more than on hour
or before the equipment is stowed away.
In order to drain the water circuit the core drilling machine
must be connected to the electric supply and to the
drilling feed unit.
1. Disconnect the water supply from the drilling feed
unit.
2. Open the water regulation valve on the core drilling
machine.
3. Set the 3-way valve on the core drilling machine to
"Wet drilling".
4. Activate manual mode on the drilling feed unit in
order to allow the water to flow.
5. Use compressed air (max. 3 bar) to blow the water
out of the water circuit.
6. Secure the drilling feed unit to prevent it falling and,
at the same time, release the fastening screw.
7. Remove the drilling feed unit and lay it down in a
safe place.
7.2 Transport and storage
Open the water flow regulator before putting the core
drilling machine into storage.
CAUTION
When temperatures drop below freezing point, check
to ensure that no water remains in the core drilling
system.
DANGER
Transport the drilling feed unit, core drilling machine,
drill stand and core bit as separate units.
Use the wheel assembly (accessory) as an aid when
transporting the equipment.
8.1 Care of the appliance
CAUTION
Keep the appliance, especially its grip surfaces, clean
and free from oil and grease. Do not use cleaning
agents which contain silicone.