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.
CAUTION
Risk of injury. Hazardous material that has been picked up may escape if a filter element is not used.
▶ Never use the appliance without a filter element.
▶ Check that the filter element is dry and that the correct type of dust bag is fitted.
7.5
Picking up liquids
CAUTION
Risk of injury. Hazardous material that has been picked up may escape if a filter element is not used.
▶ Never use the appliance without a filter element.
1. Check the container level monitoring system. → page 27
2. If possible, use a separate filter element for wet applications.
The Hilti VC 20/40 universal (2121387) filter is recommended.
3. After picking up liquids, open the two catches.
4. Lift the vacuum cleaner top section away from the waste material container and place it on a level surface
so that the filter element can dry.
5. Empty the waste material container and use a water hose to rinse it out. Use a brush to clean the
electrodes and clean the filter element, after allowing it to dry, by wiping it off with your hand.
6. Allow the waste material container to dry.
7.6
After use of the vacuum cleaner
1. Switch off the electric tool.
2. Turn the vacuum cleaner control switch to the "OFF" position.
3. Unplug the vacuum cleaner's supply cord from the power outlet.
4. Coil up the supply cord and hang it on the hook.
5. Empty the container and clean the appliance by wiping it with a damp cloth.
6. Coil up the suction hose.
7. Store the vacuum cleaner in a secure, dry place where it is inaccessible to unauthorized users.
7.7
Emptying dry dust from the waste material container
1. Unplug the supply cord from power outlet.
2. Lift the vacuum cleaner top section away from the waste material container and place it on a level surface.
➥ Applicable to UM and UME vacuum cleaners
▶ Remove the dust bag from the waste material container.
➥ Applicable to U and UL vacuum cleaners
▶ Remove the dust bag from the waste material container or grip the container by the recess
provided and empty it by tipping out the contents.
3. Then fit the vacuum cleaner top section onto the waste material container and close the two catches.
7.8
Emptying the waste material container when no dust bag is fitted (picking up liquids)
1. Disconnect the supply cord plug from the power outlet.
2. Lift the vacuum cleaner top section away from the waste material container and place it on a level surface.
3. Grip the waste material container by the recess provided and empty it by tipping out the contents.
4. Clean the edge of the waste material container with a cloth.
5. Fit the vacuum cleaner top section onto the waste material container and close the two catches.
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