Troubleshooting - Hilti DD-REC 1 Mode D'emploi

Troubleshooting

Fault
Unit doesn't start
Acoustic warning signal
(without warning lamp)
Water warning lamp lights;
acoustic warning signal
Temperature warning lamp lights; Water temperature too high
acoustic warning signal
Suction performance inadequate Coarse filter in the water
(leakage at water collector on the collector of the diamond
diamond core drilling machine)
Printed: 06.11.2015 | Doc-Nr: PUB / 5139941 / 000 / 01
Possible cause
Fault in mains supply
Supply cord or plug defective
Unit defective
Core bit or diamond core drilling Check for free flow and eliminate
machine blocked
Regulating valve on diamond core Open the regulating valve on the diamond
drilling machine set too low in
manual operation.
Water supply hose not connected Connect the water supply hose to the
to the diamond core drilling
machine.
Too little water or too much
slurry in the container
Inner container not completely
filled with water
Main filter blocked
Regulating valve opened in manual Close the regulating valve on the diamond
operation when the diamond core core drilling machine.
drilling machine is switched off
Seals defective
Container not inserted correctly
in the unit
Air release valve sticking
Pressure pump defective
drilling machine blocked
Suction pump defective
The seals of the water tank
don't seal off completely
Solution
Plug in another electric appliance and
check whether it works.
The cord should be checked and replaced
if necessary by an electrical specialist.
The unit should be repaired at a Hilti
service centre.
blockage.
core drilling machine.
diamond core drilling machine.
Clean the container and refill it.
Fill the inner container completely with
water.
Regenerate the main filter.
Check the seals on the cover and in the
nipples for damage and have them
replaced at a Hilti service centre if
necessary.
Check the position of the container in the
housing; close the container handle care-
fully.
Check the air release valve to ensure free
movement; have it repaired at a Hilti ser-
vice centre if necessary.
Have it repaired at a Hilti service centre.
Allow the container to cool or clean it and
then refill it. Caution: Risk of burning or
scalding!
Remove coarse particles.
Have it repaired at a Hilti service centre.
Check if the surface and seals of the
cover from the water tank are clean.
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