Care And Maintenance - Hilti DD 350-CA Manual De Instrucciones

2. Lock the carriage on the rail.
NOTE The carriage is locked when the locking pin
is engaged in the locked position.
In this position, no movement of the carriage is
possible.
3. Check that the carriage is locked by trying to turn
the hand wheel slightly.
4. Hold the core drilling machine securely with one
en
hand on the carrying grip. The machine may other-
wise fall to the floor.
5. Release the eccentric pin in the core drilling machine
mount.
6. Pull the eccentric pin out of the core drilling machine
mount.
7. Remove the core drilling machine from the carriage.
8. Push the eccentric pin into the carriage as far as it
will go.
6.10 Storage of the equipment and breaks between
work at temperatures below freezing
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.
1. Switch off the water supply.

7 Care and maintenance

7.1 Care of the machine
CAUTION
Keep the machine, especially its grip surfaces, clean
and free from oil and grease. Do not use cleaning
agents which contain silicone.
Clean the outside of the machine at regular intervals with
a slightly damp cleaning cloth. Do not use spray systems,
steam pressure cleaning systems or high-pressure water
jet systems when cleaning. This may negatively affect the
electrical safety of the machine.
7.2 Adjusting the play between rail and carriage 19
NOTE
Play between the rail and the carriage can be adjusted
by way of the two eccentric pins on each opposite side
of the carriage.
34
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2.
3.
4.
5.
6.11 Disposal of drilling slurry
Please refer to the "Disposal" section.
6.12 Transport and storage
Open the water flow regulator before putting the core
drilling machine into storage.
CAUTION
When temperatures drop below zero, check to ensure
that no water remains in the power tool.
WARNING
Do not lift the core drilling machine and/or the drill
stand by crane.
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.
1.
2.
3.
7.3 Checking the power tool after care and
After carrying out care and maintenance, check that all
protective and safety devices are fitted and that they
function faultlessly.
Disconnect the water supply hose from the core
drilling machine.
Open the water flow regulator.
Set the 3-way valve to "Wet drilling".
Use compressed air (max. 3 bar) to blow the water
out of the water circuit.
Use a 5 mm hex key to loosen the four central
locking screws (do not remove the locking screws).
Use a 19 mm open-end wrench to turn and adjust
the four eccentric pins so that the rollers are pressed
lightly against the rail.
Tighten the locking screws securely.
When no core drilling machine is mounted, the car-
riage should remain stationary on the rail if the rollers
have been adjusted optimally. When a core drilling
machine is mounted, it should run down the rail
under its own weight.
maintenance