Hilti DD 150?U, Manual

Page: 34 / 496

26 English 2204402
*2204402*
Malfunction Possible cause Action to be taken
Undervoltage - diamond core
drilling machine does not
develop full power.
Supply network fault – undervolt-
age occurred.
▶
Check whether other power
consumers are disrupting the
power supply from the network
or generator.
▶
Check the length of the exten-
sion cord used.
Multifunction display indi-
cates "0" at the gear dis-
play and the diamond core
bit doesn’t rotate.
The gear selector isn’t engaged.
▶
Operate the gear selector until
it engages.
Connection has been inter-
rupted
Existing Bluetooth connection has
been separated.
▶
Make sure there is a clear line of
sight between the product and
the accessory. Local conditions
such as reinforced concrete
walls, for example, can affect
the quality of the connection.
▶
Connect the accessories to the
diamond core drilling machine
again.
Bluetooth off
Bluetooth is deactivated.
▶
Activate the Bluetooth function.
Simultaneously press the but-
tons and .
A different diamond core
drilling machine is connected
automatically via Bluetooth
with the used accessory (e. g.
water management system).
Several diamond core drilling ma-
chines are connected to the same
accessory. The accessory always
connects automatically to the di-
amond core drilling machine that
enables the connection to be es-
tablished fastest.
▶
Switch Bluetooth on the ac-
cessory off and then on again
and connect the diamond core
drilling machine to the acces-
sory again.
The diamond core bit doesn’t
rotate.
The diamond core bit has become
jammed in the hole.
▶
Guide the diamond core drilling
machine in a straight line.
▶
Use an open-end wrench to
release the core bit: Disconnect
the supply cord plug from
the power outlet. Grip the
diamond core bit with a suitable
open-end wrench close to the
connection end and release the
diamond core bit by rotating it.
▶
If using a drill stand: Turn the
hand wheel and try to release
the diamond core bit by moving
the carriage up and down.
The rate of drilling progress
decreases.
Maximum drilling depth has been
reached.
▶
Remove the core and use a core
bit extension.
The core is stuck in the core bit.
▶
Remove the core.
Wrong core bit specification for the
base material.
▶
Select a more suitable diamond
core bit specification.