Hilti DD 30-W Manual De Instrucciones página 48

To avoid damage to the components, use only fresh water containing no dirt particles.
The maximum permissible water temperature is 40°C (104°F).
With the version for Great Britain, an isolating transformer is used instead of the PRCD.
1. Connect the water supply hose to the water connection on the drilling machine with the appropriate
connector.
2. Check that the water supply hose is securely attached to the water connection on the drilling machine.
3. Open the water supply control valve and check that there is no leakage at the water connection on the
drilling machine.
4. Plug the machine's supply cord into an earthed/grounded power outlet.
5. Press the I or Reset button on the ground fault circuit interrupter (PRCD).
➥ The LED on the ground fault circuit interrupter (PRCD) must light.
6. Press the 0 or TEST button on the ground fault circuit interrupter (PRCD).
The LED on the ground fault circuit interrupter (PRCD) must go out.
WARNING
Risk of injury due to electric shock! Do not continue operating the diamond core drilling machine if the
indicator on the ground fault circuit interrupter does not go out when the 0 or the TEST button is pressed.
▶ Have your diamond core drilling machine repaired by Hilti Service.
7. After the test, switch the ground fault circuit interrupter (PRCD) back on by pressing the 0 or TEST
button.
6 Drilling
WARNING
Risk of accident! Accidents with serious consequences may result if rotating parts come into contact with
water hoses or electric cables.
▶ Always make sure that rotating parts of the equipment do not come into contact with water hoses or
electric cables.
WARNING
Risk of injury when the accessory tool stalls. In accordance with the applications for which it is designed,
the machine produces a high torque. If the accessory tool suddenly stalls, the machine may suddenly move
with great force.
▶ Always use the side handle and hold the machine with both hands. Always be prepared for sudden
stalling of the accessory tool.
WARNING
Risk of accident! When drilling penetrations through walls or floors/ceilings, the core or fragments of
material may drop out and fall down on the other side.
▶ Take the necessary safety precautions on the other side of the wall or below the floor/ceiling before
drilling penetrations.
WARNING
Risk of injury due to flying fragments! Drilling may cause hazardous flying fragments. Flying fragments
present a risk of injury to the body and eyes.
▶ Wear eye protection, protective clothing and a hard hat.
WARNING
Risk of injury. The machine and the drilling operation generate noise. Exposure to noise can lead to hearing
loss.
▶ Wear ear protectors.
38 English
Printed: 04.07.2019 | Doc-Nr: PUB / 5283477 / 000 / 06
2048397
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