Operation - Hilti VC 20-U Mode D'emploi

7 Operation

WARNING
For vacuum cleaners of the class M, please note: Va-
cuum off the outer surfaces of the appliance, wipe
it clean or seal it in a suitable container or mater-
ial before removing it from an area contaminated
with hazardous substances. All parts of the appliance
must be regarded as being contaminated when they
are removed from the hazardous area and suitable
measures must be taken to avoid spreading dust.
WARNING
In an emergency (e.g. burst filter), switch the appli-
ance off, disconnect it from the electric supply and
have it checked by a trained specialist before further
use.
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.
CAUTION
Always check to ensure that the vacuum cleaner is
standing securely. Engage the castor brakes.
7.1 Hose diameter setting (VC 20‑UM/ VC 40‑UM)
When picking up dry, non flammable dust which has an
exposure limit value, or when picking up wood chips or
shavings, adjust the hose diameter setting switch to the
correct diameter setting for the suction hose used. When
using the appliance in conjunction with the Hilti hollow
drill bit system, set it to the smallest hose diameter.
See section: 2.2
(VC 20‑UM/ VC 40‑UM)
7.2 Operation without use of the electric tool
power outlet
NOTE
Check that the appliance is switched off before plugging
it into the power outlet (control switch in the "OFF"
position).
1. Plug the supply cord into the power outlet.
2. Turn the control switch to the "ON" position.
7.3 Operation with use of the electric tool power
outlet
DANGER
The power outlet is to be used only to connect electric
tools directly to the vacuum cleaner.
NOTE
Check that the electric tool is switched off before plugging
it into the power outlet on the vacuum cleaner.
Hose diameter settings
NOTE
The operating instructions and safety instructions for the
electric tool plugged into the power outlet on the vacuum
cleaner must be observed.
NOTE
Check to ensure that the maximum power drawn by the
electric tool is below the maximum permissible output of
the power outlet on the vacuum cleaner (please refer to
the "Technical data" section of the operating instructions
and information printed on the power outlet).
1. Disconnect the power tool supply cord plug from
the power outlet.
2. Plug the electric tool's supply cord into the power
outlet on the vacuum cleaner.
3. Plug the vacuum cleaner's supply cord into the
power outlet.
4. Turn the control switch to the "AUTO" position.
5. Switch on the electric tool.
NOTE The vacuum cleaner will continue to run for
a short time after switching off the electric tool in
order to ensure that all dust is removed from the
suction hose.
7.4 Picking up dry dust
NOTE
Before using the appliance to pick up dry dust, especially
dust from mineral materials, always check to ensure
that the correct dust bag (Hilti accessory) is fitted in the
container. The material collected can then be disposed
of cleanly and easily.
CAUTION
The material collected must be disposed of in accord-
ance with the applicable regulations.
CAUTION
Never use the appliance without a filter element.
CAUTION
When fitting the top section of the vacuum cleaner,
take care to avoid pinching your fingers or damaging
the supply cord.
Check to ensure that the filter element is dry. A damp
filter element will quickly become clogged when dry dust
is picked up with the appliance. For this reason, replace
the filter element with a dry filter element before using the
appliance to pick up dry dust.
7.4.1 Changing the paper dust bag / filter fleece
DANGER
Check that the bag has not been pierced through by
objects which may cause injury.
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