Hilti DD 250 Bedienungsanleitung Seite 57

Note
The drive unit and the carriage form a unit. The diamond core drilling machine can thus be removed
from the drill stand together with the carriage.
Adjust the play between the rail and carriage before using the tool for the first time.
1. Remove the end stop screw from the end of the rail.
2. Ensure that the carriage lock is open.
3. Mount the diamond core drilling machine on the drill stand by sliding the opening in the carriage over the
end of the rail.
4. Lock the carriage on the rail by turning the carriage lock through 90°.
5. Slightly turn the hand wheel to ensure that the diamond core drilling machine is securely fastened.
6. Refit the end stop screw to the end of the rail. The safety-relevant end-stop function becomes inoperative
if this component is not fitted.
5.13 Fitting the water connection (accessory)
CAUTION
Risk of personal injury and material damage The hose may become damaged if it is used incorrectly.
▶ Regularly check the hoses for damage and make sure that the maximum permissible water supply
pressure of 6 bar is not exceeded.
▶ Make sure that the hose does not come into contact with rotating parts.
▶ Make sure that the hose is not damaged as the carriage advances.
▶ Maximum water temperature: 40 °C.
▶ Check the water supply system to ensure there are no leaks.
Note
To avoid damage to the components, use only fresh water containing no dirt particles.
A flow meter (accessory) may be fitted between the tool and the water supply hose.
1. Connect the water flow regulator to the diamond core drilling machine.
2. Connect the water supply (hose connection).
5.14 Fitting the water collection system (accessory)
WARNING
Risk of personal injury and material damage The diamond core drilling machine may become
damaged and the risk of electric shock is increased.
▶ Water must not be allowed to run over the motor and cover.
▶ Use of a wet-type industrial vacuum cleaner is a mandatory requirement for drilling in an upwards
direction.
Note
The diamond core drilling machine must be at a 90° angle to the ceiling. The water collection system
sealing disc must match the diamond core bit diameter.
Note
Use of the water collection system allows water to be led away under control, thus preventing the
surrounding area from being heavily soiled. The best results are achieved with a wet-type industrial
vacuum cleaner.
Note
When using the drill stand DD­ST 200: Before fitting the water collector holder, screw the spacer for
the water collector holder tightly to the drill stand.
1. Loosen the screw on the front of the drill stand at the bottom end of the rail.
Printed: 22.08.2017 | Doc-Nr: PUB / 5245693 / 000 / 02 Printed: 22.08.2017 | Doc-Nr: PUB / 5245693 / 000 / 03
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