Before Use; Operation - Hilti DD-REC 1 Mode D'emploi

core drilling machine to the rear. Never carry the unit by
the supply cord or hose set and never pull on these parts.
Never drive over the hoses or supply cord. Don't unplug
the unit by pulling on the supply cord. Don't expose the
hoses or supply cord to heat, oil or sharp edges. If the
supply cord becomes damaged while working, don't
touch it – unplug the mains plug immediately and have
the unit or supply cord repaired at a Hilti service centre.
Never expose the plug connections for the unit to water.
If a plug interface has become wet, always disconnect
the supply cord plug from the mains socket before touch-
ing it and wiping it dry. Check that the pins of the plug
and the supply cord are clean and dry before they are
connected. Unplug the supply cord from the mains sock-
et before cleaning.
Avoid unintentional starting.
Always switch off the unit and unplug the
supply cord from the mains socket before
removing the container, when the unit is not in use (e.g.
during pauses between work), before cleaning and before
carrying out any maintenance.
Keep the unit in good condition.
Follow the instructions on care and maintenance.
Repairs to the unit may be carried out only by an autho-
rised electrical specialist using original Hilti spare parts.
Failure to observe this point may result in damage to the
unit or present a risk of accident. Accordingly, if neces-
sary, have the unit repaired at a Hilti service centre or
authorised Hilti repair workshop. In accordance with
national safety regulations, the safety function of the
earth / ground conductor must be checked at regular
intervals.

Before use

It is essential that the safety precautions print-
ed in these operating instructions are read
and observed. Also read and observe the instructions
and safety precautions listed in the operating instruc-
tions for the DD EC-1 diamond core drilling machine.
The DD-REC1 water recycling system should
be used exclusively with the DD EC-1 dia-
mond core drilling machine and the corresponding sup-
ply cord with built-in PRCD residual current device (sup-
plied with the DD EC-1 diamond core drilling machine).
In Great Britain, the 110 V units must be connected to
an isolating transformer.
The mains voltage must comply with the infor-
mation on the type plate.
If extension cables are used: only extension cables
of a type approved for the intended use and of ade-
quate cross section may be used. Failure to observe this
point may result in reduced performance and could cause
the cable to overheat. Damaged extension cables must
be replaced.
14
Printed: 06.11.2015 | Doc-Nr: PUB / 5139941 / 000 / 01
The recommended cable cross sections and maximum
lengths are as follows:
Mains Conductor cross section
voltage 1.5 mm
100 V
110 V 20 m
220–230 V 50 m

Operation

Connecting the hose set to the drilling machine
– Connect the keyed electric supply cord plug from the
hose set to the socket on the underside of the drilling
machine. To do this, bring the marks on the plug and
the socket into alignment and then push the plug into
the socket on the machine as far as it will go. While
maintaining slight pressure on the plug, rotate it in a
clockwise direction until it is heard to engage
– Connect the thin end of the hose from the hose set to
the drilling machine and the thick end of the hose to
the water collector hose connector. The couplings
must be heard to engage when connected.
Removing and opening the container
– Never remove the container while the unit is
switched on. Switch the unit off by turning the
on / off switch in a clockwise direction and discon-
nect the mains plug
– Wear protective gloves and protec-
tive goggles. The contents of the con-
tainer may irritate the skin and eyes. The container
and its contents may be hot after long periods of use.
Observe the safety precautions. When handling the
container, take care to avoid pinching your fingers at
the edges of the housing, grips and latches.
– Lift the container grip approx. 45° and hold it in this
position until pressure compensation is heard to be
complete (approx. 2 seconds). Failure to observe this
point may cause a large quantity of the container con-
tents to escape at the nipples.
– Lift the container grip to the vertical position and pull
the container upwards out of the housing
– Always transport the container in an upright position
or place it on a horizontal surface.
– Ensure that it stands securely.
– Open the four container cover latches
– Lift the cover off the container, taking care to ensure
that the float ball doesn't get stuck. Lay the cover down
carefully.
Filling, closing and inserting the container
– Fill the inner container up to the top edge with clean
water . Fill the outer container to the desired level
between the min. and max. marks.
– Check the inner and outer cover seals for damage.
2 2.0 mm 2 2.5 mm 2 3.5 mm
20 m 40 m
40 m
80 m
.
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2
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