Hilti DD 350-CA Mode D'emploi page 44

Fault
Water escapes from the chuck
during operation.
Excessive play in the drilling
en
system.
The motor cuts out.
9 Disposal
Most of the materials from which Hilti machines or appliances are manufactured can be recycled. The materials must
be correctly separated before they can be recycled. In many countries, Hilti has already made arrangements for taking
back old machines and appliances for recycling. Ask Hilti customer service or your Hilti representative for further
information.
For EC countries only
Disposal of electric appliances together with household waste is not permissible.
In observance of the European Directive on waste electrical and electronic equipment and its imple-
mentation in accordance with national law, electrical appliances that have reached the end of their life
must be collected separately and returned to an environmentally compatible recycling facility.
Recommended pretreatment before disposal of drilling slurry
NOTE
The disposal of drilling slurry directly into rivers, lakes or the sewerage system without suitable pretreatment presents
environmental problems. Ask the local public authorities for information about current regulations.
36
Possible cause
The core bit is not screwed securely
into the chuck.
The connection end / chuck is dirty.
The chuck or connection end seal is
defective.
The core bit is not screwed securely
into the chuck.
The leveling screws or anchor spindle
are not tightened.
Excessive play at the carriage.
The core bit connection end is defect-
ive.
The bolt at the top end of the brace
and/or at the pivoting joint at the bot-
tom end of the rail is loose.
The machine's mounting mechanism
is loose.
Excessive play at the chuck.
The chuck is fitted incorrectly.
Poor fastening to the working surface.
The electronics are defective.
The core is stuck in the core bit.
Interruption in the electric supply.
Remedy
Tighten it securely.
Clean the connection end / chuck.
Check the seal and replace it if ne-
cessary.
Tighten it securely.
Tighten the leveling screws or the an-
chor spindle.
See section: 7.2 Adjusting the play
between rail and carriage 19
Check the connection end and re-
place it if necessary.
Tighten the bolts.
Tighten the machine's mounting
mechanism.
Check that the chuck runs true (no
wobble) and replace if necessary.
Push the chuck in as far as it will
go and then tighten the hex. socket
screw to a torque of 35 Nm.
Check the fastening and adjustment
of the leveling screws.
The machine should be repaired by
Hilti Service.
Remove the core.
Check the supply cord, extension
cord, supply cord plug, PRCD and
have them replaced by a qualified
electrician if necessary.