Fastening The Drill Stand With The Vacuum Base Plate (Accessory); Fitting The Water Connection (Accessory) - Hilti DD 120 Manual De Instrucciones

7. Secure the drill stand by tightening the clamping spindle nut with a 19 mm open-ended wrench.(SW 19)
8. Check that the drill stand is secure.
5.4

Fastening the drill stand with the vacuum base plate (accessory)

DANGER
Risk of injury if the diamond core drilling machine falls !
▶ Fastening the drill stand to the ceiling only by means of the vacuum securing method is not permissible.
A heavy structural support or a threaded spindle, for example, can serve as an additional means of
fastening.
WARNING
Risk of injury if pressure is not checked !
▶ Before and during drilling, check that the pressure gage pointer remains in the green zone.
Make sure that the core bit selected for use will not damage the vacuum base plate.
Before positioning the drill stand, check that you have sufficient space for assembly and operation.
Use the vacuum fastening method only together with core bits ≤ 300 mm (≤ 12 in) in diameter and
when no spacer is fitted.
1. From the center point of the hole to be drilled, draw an orientation line approx. 800 mm (31.5 in) toward
and past where the diamond core drilling machine will be positioned.
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).
*274865*
Printed: 09.08.2019 | Doc-Nr: PUB / 5069516 / 000 / 07
274865 English 29