Troubleshooting - Hilti DD VP-U Mode D'emploi

1. Use a damp cloth and a little household
cleaner to clean the outside of the appli-
ance.

9 Troubleshooting

en
Fault
The pump is running and
is connected to the va-
cuum baseplate but no
vacuum is created (pres-
sure indicator in the red
area).
The pump runs but cre-
ates no vacuum (pressure
indicator in the red area).
The pump doesn't start.
The pump switches itself
off.
The water separator con-
tainer cannot be removed.
16
Printed: 29.05.2017 | Doc-Nr: PUB / 5071482 / 000 / 03 Printed: 31.03.2017 | Doc-Nr: PUB / 5071482 / 000 / 01
2. Always keep the grip surfaces of the appli-
3. Clean the ventilation slots regularly with a
Possible cause
The filter is clogged.
Dirt in the hoses, fittings, pump
or vacuum baseplate seals
(water separator, connectors,
etc.).
Operation at high altitude.
The water separator is full.
The ball float is stuck beneath
the filter unit.
The water separator is leaking,
damaged or not fitted.
The hose is damaged or
squashed.
The pump is defective.
Electric power failure.
The pump is defective.
The overheating cut-out has
been activated.
The system is still under va-
cuum.
ance free from oil and grease.
soft, dry brush.
Remedy
Return the appliance for repair.
Clean out the hoses, fittings
and seals or replace them if
necessary.
Use a different fastening
method.
Empty the water separator.
Remove the water separator
and pull the ball down.
Fit the water separator. Re-
place it if damaged.
Return the appliance for repair.
Return the appliance for repair.
Check the fuses and cables.
Check the position of the
switch.
Check that the electric supply
voltage complies with the de-
tails given on the rating plate.
Return the appliance for repair.
Allow the appliance to cool
down. The appliance switches
on again automatically.
Check the ventilation slots and
clean them if necessary.
Check the operating voltage.
Release the pressure by con-
necting the hose to the va-
cuum baseplate.