Hilti VC 20L-X, Original Operating Instructions, Page: 18 / 128

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7. Close the 2 catches.
8. Check to ensure that the suction head is fitted correctly and secured.
9. Connect the suction hose.
7 Operation
WARNING
Risk of injury. Damage to the filter system may allow harmful dust (health hazard) to escape.
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In an emergency (e.g. filter ruptured), switch the vacuum cleaner off, unplug the supply cord from the
power outlet and have the vacuum cleaner checked by a trained and qualified person before further use.
CAUTION
Risk of injury presented by the appliance running away out of control. The vacuum cleaner may run
away out of control if the wheel brakes are not engaged.
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Engage the wheel brakes so that the vacuum cleaner stands securely.
7.1 Setting the hose diameter
1. For vacuuming up dry, non-flammable dust which has an exposure limit value, or when vacuuming up
wood shavings, adjust the hose diameter setting switch to the correct diameter setting for the suction
hose used.
2. Change the setting for the hose diameter, and consequently the threshold for the acoustic warning, by
repeatedly pressing the button.
7.2 Operation without use of the electric tool power outlet
1. Check that the switch on the appliance is in the “OFF” position off before plugging the supply cord into
a power outlet.
2. Plug the vacuum cleaner’s supply cord into the power outlet.
3. Turn the control switch to the “ON” position.
7.3 Operation with use of the power outlet on the appliance
The power outlet on the appliance is to be used only for powering electric tools directly from the
vacuum cleaner.
The operating instructions and safety instructions for the electric tool plugged into the power outlet on
the vacuum cleaner must be observed.
1. Unplug the vacuum cleaner’s supply cord from the power outlet.
2. Check 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 at the power outlet on the appliance).
3. Check to ensure that the electric tool is switched off before plugging its supply cord into the power outlet.
4. Plug the electric tool’s supply cord into the power outlet on the vacuum cleaner.
5. Plug the vacuum cleaner’s supply cord into the power outlet.
6. Turn the control switch to the “Auto” position.
7. Switch on the power tool.
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
Before picking up dry dust, especially dust from mineral materials, always check to ensure that the
correct dust bag is fitted in the container. The material picked up by the vacuum cleaner can then be
disposed of cleanly and easily.