Hilti DD 120 Mode D'emploi page 16

2. Draw a positioning line intersecting the orientation line at right angles 203 mm (8 in) from the center point
of the hole to be drilled.
3. Back off all leveling screws until the anchor base plate is flush with the surface.
4. Slip the drill stand over the spindle and on to the vacuum base plate.
➥ The anchor base plate is seated flush with the end stops of the vacuum base plate.
5. Secure the drill stand by tightening the clamping spindle nut with a 19 mm open-ended wrench.SW 19
6. Connect the vacuum connector on the vacuum base plate to the vacuum pump.
7. Switch on the vacuum pump and press the vacuum base plate against the surface.
8. To align the diamond core drilling machine, press and hold down the vacuum relief valve.
Use the mark on the anchor base plate and the positioning line for alignment.
9. Release the vacuum relief valve and press the vacuum base plate against the surface.
10. Check that the drill stand is secure.
11. Level the diamond core drilling machine, if necessary, by turning the 4 leveling screws.
5.5 Fitting the water connection (accessory)
ATTENTION
Hazard due to incorrect use! Incorrect use can result in irreparable damage to the hose.
▶ 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.
To avoid damage to the components, use only fresh water containing no dirt particles.
A flow meter can be inserted as an accessory between the machine and the water supply.
1. Connect the water flow regulator to the diamond core drilling machine.
2. Connect the water supply (hose connection).
5.6 installing the water collection system (accessory)
WARNING
Danger of electric shock! There is a possibility of water flowing over the motor and cover if the vacuum
removal system is faulty.
▶ Cease operations immediately if the vacuum removal system is not working.
CAUTION
Risk of injury! Inadvertent starting of the product.
▶ Unplug the supply cord before making adjustments to the power tool or before changing accessories.
For drilling upward, the diamond core drilling machine must be at a 90° angle to the underside of the
slab. The water collection system sealing disc must match the diamond core bit diameter.
Use of the water collection system allows water to be led away under control, thus preventing the
surrounding area from being heavily soiled.
1. Remove the screw from the drill stand.
2. Install the water collector holder on the drill stand with the screw.
3. Position the water collector, with seal and water collector sealing disc installed, between the two movable
arms of the water collector holder.
4. Press the water collector against the work surface by turning the two screws on the water collector
holder.
10 English
Printed: 09.08.2019 | Doc-Nr: PUB / 5431632 / 000 / 02
6
2215140
*2215140*