Hilti DD 350, Manual

Page: 49 / 664

English 39
8.2 The diamond core drilling machine is not in working order
Malfunction Possible cause Action to be taken
The service indicator shows
nothing.
The PRCD isn’t switched on.
▶
Check that the PRCD is
functioning and switch it on.
Interruption in the electric supply.
▶
Plug in another electric tool or
appliance and check whether it
works.
▶
Check the plug connections,
supply cord, power supply line
and main supply fuse.
Temperature, overvoltage or
undervoltage indicator is lit.
The motor has overheated.
▶
Switch the diamond core drilling
machine off (press off-switch in
the middle) and back on again.
Check the water supply. After
cooling down, the diamond core
drilling machine is ready for use
again.
Temperature, overvoltage
or undervoltage indicator is
flashing.
Fault in the power supply.
▶
Switch the diamond core drilling
machine off (press off-switch
in the middle) and back on
again. Check the power supply
(especially during operation by
generator or transformer).
The automatic drill feed DD-AF CA
emergency stop button has been
pressed.
▶
Release the automatic drill feed
DD-AF CA emergency stop
button.
The service indicator blinks.
The diamond core drilling machine
is defective or the safety function
has been activated.
▶
Switch the diamond core drilling
machine off (press off-switch in
the middle) and back on again.
The motor cuts out. Core bit jammed for too long.
▶
Free the jam and switch the
motor off and back on again.
9 Disposal
Most of the materials from which Hilti products 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 sales representative for further information.
In accordance with the European Directive on waste electrical and electronic equipment and its implemen-
tation in conformance with national law, electric tools, machines or appliances that have reached the end of
their life must be collected separately and returned to an environmentally compatible recycling facility.
▶
Disposal of electric tools or appliances together with household waste is not permissible.
Drilling and sawing slurry
Disposing of drilling and sawing slurry directly into rivers, lakes or the sewerage system without suitable
pretreatment is problematic from an environmental point of view.
▶
Ask the local public authorities for information about current regulations.
We recommend the following pretreatment:
▶
Collect the drilling or sawing slurry (for example, using a wet-type vacuum cleaner).
▶
Allow the drilling or sawing slurry to stand for some time or add a flocculation agent to help the fine
particles in the slurry settle and separate from the water.
▶
Dispose of this solid portion of the drilling or sawing slurry at a construction waste disposal location.
Printed: 02.11.2017 | Doc-Nr: PUB / 5145256 / 000 / 04