Hilti DD 30-W Original Operating Instructions page 45

5.5 Connecting the electric supply cord and water supply hose
WARNING
Water running out presents a risk of electric shock! A damaged or incorrectly fitted O-ring at the
water connection on the machine, excessively high water pressure, faulty hose connections and leaks
in the water supply system may result in leakage of water and a risk of electric shock.
▶ Regularly check the machine, water connections, hoses and hose connectors for damage
and make sure that the maximum permissible water supply pressure of 6 bar is not exceeded.
Note
To avoid damage to the components, use only fresh water containing no dirt particles.
The maximum permissible water temperature is 40°C (104°F).
Note
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).
Note
The LED on the ground fault circuit interrupter (PRCD) must go out.
WARNING
Risk of injury Risk of electric shock.
▶ If the indicator continues to light up, further operation of the diamond core drilling machine
is not permissible. 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.
Printed: 20.12.2016 | Doc-Nr: PUB / 5283477 / 000 / 03
English 37