Hilti DD 150-U Mode D'emploi Original page 36

Malfunction
Water escapes at the chuck
during operation.
No water is flowing.
The drilling system has too
much play.
Imbalance in the system (e.g.
heavy rattling)
11 Disposal
Most of the materials from which Hilti tools and appliances are manufactured can be recycled. The
materials must be correctly separated before they can be recycled. In many countries, your old tools,
machines or appliances can be returned to Hilti for recycling. Ask Hilti Service or your Hilti representative
for further information.
▶ Do not dispose of power tools, electronic equipment or batteries as household waste!
12 FCC statement / ISED statement
Changes or modifications not expressly approved by Hilti may restrict the user's right to operate the product.
This device complies with Part 15 of the FCC Rules and contains license-exempt transmitter(s)/receiver(s)
that comply with Innovation, Science and Economic Development Canada's license-exempt RSS(s).
Operation is subject to the following two conditions:
▶ This device may not cause interference.
▶ This device must accept any interference, including interference that may cause undesired operation of
the device.
28 English
Possible cause
The core bit connection end /
chuck is dirty.
The seal at the chuck or at the
connection end is defective.
The filter or water flow indicator is
blocked.
The diamond core bit isn't securely
tightened in the chuck.
The core bit connection end /
chuck is defective.
The carriage has too much play.
Screws / bolts on the drill stand are
loose.
The drill stand is inadequately fas-
tened.
The connection between the dia-
mond core drilling machine and the
carriage or spacers is loose.
Dust has collected in the core bit.
Action to be taken
▶ Clean and grease the connec-
tion end and/or the chuck.
▶ Check the seal and replace it if
necessary.
▶ Remove the filter or water flow
indicator and flush it through.
▶ Tighten the diamond core bit
securely.
▶ Remove the diamond core bit.
Rotate the diamond core bit
approx. 90° about its own axis.
Refit the diamond core bit.
▶ Check the connection end and
chuck and replace them if
necessary.
▶ Adjust the play between the rail
and carriage. → page 17
▶ Check the security of screws
/ bolts on the drill stand and
tighten them if necessary.
▶ Fasten the drill stand more
securely.
▶ Check the connection and,
if necessary, refasten the
diamond core drilling machine.
▶ Remove the dust from the core
bit.
▶ To prevent electrostatic effects,
use an anti-static vacuum
extractor.
▶ Remove the core bit. Rotate the
diamond core bit approx. 90°
about its own axis. Refit the
diamond core bit.
2204401
*2204401*