44
English
Malfunction
Possible cause
Action to be taken
The diamond core bit can’t be
fitted into the chuck.
The chuck operating lever isn’t fully
open.
▶
Open the lever as far as it will
go.
The diamond core bit has too
much play.
The connection end is defective.
▶
Check the connection end and
replace it if necessary.
The chuck lever is not closed.
▶
Close the chuck lever.
No water is flowing.
The filter or water flow indicator is
blocked.
▶
Remove the filter or water flow
indicator and flush it through.
Water escapes from the
chuck during operation.
The core bit connection end /
chuck is dirty.
▶
Clean the connection end or the
chuck.
The chuck seal is defective.
▶
Check the seal and replace it if
necessary.
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.
Water in the motor.
▶
Allow the diamond core drilling
machine to dry out completely
in a warm, dry place.
The service indicator lights.
The carbon brushes are worn out.
▶
Replace the carbon brushes.
The service indicator blinks.
The motor has overheated (e.g.
due to excessive lateral core bit
friction and/or excessive contact
pressure).
▶
Wait a few minutes until the
motor has cooled down or
allow the diamond core drilling
machine to run under no load in
order to speed up the cooling
process.
▶
Switch the diamond core drilling
machine off and then on again.
▶
Guide the diamond core drilling
machine carefully, keeping
it straight and/or reduce the
contact pressure.
9 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.
▶
Disposal of electric tools or appliances together with household waste is not permissible.
9.1 Disposal of drilling slurry
Disposal of drilling slurry directly into rivers, lakes or the sewerage system without suitable pretreatment
presents environmental problems.
Printed: 20.12.2016 | Doc-Nr: PUB / 5283477 / 000 / 03
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