Hilti DD 120 Original Bedienungsanleitung Seite 37

C-Rod, A-Rod, M27 SW 27or BR chucks require the use of a 27 mm open-ended wrench to lock the
arbor and a suitable open-ended wrench for removing the core bit.
1. Lock the diamond core drilling machine by fully tightening the carriage lock.
2. Open the chuck (BI+) by turning it in the direction of the open brackets symbol.
3. Pull the sleeve toward the machine, as indicated by the arrow, to unlock the core bit.
4. Remove the core bit from the chuck (BI+).
6 Operation
6.1 TPS theft protection system (optional)
The product can be equipped with the optional TPS theft protection system. It can then be unlocked and
made ready for operation only through use of the corresponding TPS key.
6.2 Enabling a machine equipped with theft protection system (TPS)
1. Plug the supply cord of the diamond core drilling machine into the power outlet.
2. Press the "Reset" or "I" button on the PRCD.
◁ The yellow theft protection indicator LED flashes.
3. Hold the TPS key directly against the lock symbol.
◁ The yellow theft protection indicator LED goes out and the machine is enabled.
If the power supply is interrupted, the product remains ready for operation for approximately
20 minutes. If the interruption is longer, the theft protection system has to be deactivated again
with the TPS key.
6.3 Portable residual current device (PRCD)
1. Plug the diamond core drilling machine's mains plug into an earthed/grounded power outlet.
2. Press the "I" or "RESET" button on the PRCD.
◁ The indicator lights up.
3. Press the "0" or "TEST" button on the PRCD.
◁ The indicator goes 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.
4. Press the "I" or "RESET" button on the PRCD.
◁ The indicator lights up.
6.4 Operating diamond core drilling machine without a wet-type industrial vacuum extractor
1. Slowly open the water flow regulator until the water flows at the desired rate.
The diamond core drilling machine can be operated with or without water collection system. With
the water collection system, the cooling water is drained away through a hose, without the water
collection system the water runs off in an uncontrolled manner. For operation with water collection
system, first install the water collection system → page 29.
In both applications, upward drilling is not allowed.
2. Push the ON/OFF switch to the "I" position.
3. Release the carriage lock.
4. Turn the hand wheel until the diamond core bit is in contact with the work surface.
5. When you start drilling apply only light pressure until the core bit has centered itself and only then,
increase the pressure against the working surface.
274865
*274865*
Printed: 11.06.2018 | Doc-Nr: PUB / 5069516 / 000 / 06
English 31