Care And Maintenance - Hilti VC 20-U Mode D'emploi

Fit the vacuum cleaner top section onto the waste ma-
terial container and close the two catches.

8 Care and maintenance

CAUTION
For vacuum cleaners of the class M, please note: CAU-
TION: This appliance contains harmful dust. The va-
cuum cleaner may be emptied (including disposal of
the dust container) or serviced only by trained per-
sons wearing the appropriate protective equipment.
Do not operate the appliance if the filter system is
incomplete.
8.1 Automatic filter element cleaning
NOTE
Do not attempt to clean the filter element by knocking it
against a hard object and do not use pointed instruments.
This will reduce the life of the filter element.
NOTE
Do not use compressed air to clean the filter element.
This may cause tears in the filter material.
NOTE
The condition of the filter will deteriorate with use. It
should be replaced at least every 6 months and more
frequently if the appliance is subject to heavy use.
The appliance is equipped with a filter cleaning system
which removes most of the dust adhering to the filter
element.
The filter element is cleaned automatically by a blast of
air (a pulsating noise is heard).
NOTE
The filter element cleaning system functions only when a
suction hose is connected.
8.2 Changing the filter element
CAUTION
Never use the appliance without a filter element.
8.2.1 Removing the filter element 6
1. Disconnect the supply cord plug from the power
outlet.
2. Open the filter cover catches.
3. Open the filter cover.
4. Carefully remove the filter element, gripping it at the
areas provided in the holder.
7.8.2 Emptying the waste material container when
no dust bag is fitted (collecting liquids)
NOTE
The material collected must be disposed of in accordance
with the applicable regulations.
1. Hold the container by the grip areas provided and
tip it over to empty out its contents.
2. Clean the edge of the waste material container with
a damp cloth.
8.2.2 Fitting the filter element 7
1. Clean the sealing surface with a cloth.
2. Fit the new filter element.
3. Close the filter cover by pivoting the cover catch
forward.
4. Close the filter cover catches.
8.3 Opening the appliance for checking
1. Engage the castor brakes.
2. Disconnect the supply cord plug from the power
outlet.
3. Open the two catches.
4. Lift the vacuum cleaner top section away from the
waste material container and place it on a level
surface.
8.4 Checking the waste material level
Check the cut-out contacts and clean them with a brush
if necessary (if dirty).
8.5 Closing the appliance
CAUTION
When fitting the top section of the vacuum cleaner,
take care to avoid pinching your fingers or damaging
the supply cord.
1. Check the seal at the vacuum cleaner top section
and also clean this with a cloth.
2. Fit the vacuum cleaner top section onto the waste
material container.
3. Close the two catches.
8.6 Care of the appliance
CAUTION
Disconnect the supply cord plug from the power out-
let.
Never operate the appliance when the ventilation slots
are blocked. Clean the ventilation slots carefully using a
dry brush. Clean the outside of the appliance at regular
intervals with a cloth. Do not use a spray, high-pressure
water-jet system, steam pressure cleaning equipment or
en
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