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5.4.2
Positioning the drilling system when fastened with an anchor
1. In order to position the drilling system exactly at the hole center, carefully slacken the clamping spindle
until the drill stand is free to move and then correct its position.
2. Level the drill stand adapter plate by turning the 2 leveling screws.
3. Tighten the clamping spindle securely when the drilling system is correctly positioned.
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.
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.
14
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