Hilti VC 20-U-Y Manual De Instrucciones página 42

▶ Store the tool and batteries in a place where they cannot be accessed by children or unauthorized
persons.
▶ Check the tool and batteries for damage before use after long periods of storage.
9 Troubleshooting
9.1 Troubleshooting for vacuum cleaner operation
If the trouble you are experiencing is not listed in this table or you are unable to remedy the problem by
yourself, please contact Hilti Service.
Trouble or fault
No suction power or reduced
suction power.
Dust is blown out of the appli-
ance.
36 English
Possible cause
The filter element is clogged with
dirt or dust.
The dust bag is full.
The suction hose or dust hood on
the electric tool is blocked.
The wrong filter is fitted.
The filter is clogged with wood
chips or shavings.
The filter clogs quickly when pick-
ing up certain materials.
The dust bag is full.
The filter element is clogged with
dirt or dust.
The suction hose or dust hood on
the electric tool is blocked.
The hose diameter setting is incor-
rect.
The filter element is not fitted cor-
rectly.
Action to be taken
▶ If the automatic filter cleaning
system is deactivated, activate
it and allow the vacuum cleaner
to run for 30 seconds.
▶ Close the end of the hose with
your hand and allow the vacuum
cleaner to run for 30 seconds.
▶ Use a water hose to rinse the
V 20/40 universal filter and the
VC 20/40 performance filter.
▶ Never beat out the filter against
a wall or floor as this may result
in micro holes that allow dust to
pass through.
▶ Remove the old filter element
→ page 34 and install a new
filter element → page 35.
▶ Change the dust bag.
▶ Clean the suction hose and the
dust hood.
▶ If you are picking up water,
slurry or damp material, use a
VC 20/40 universal filter or a
VC 20/40 performance filter.
▶ If you are picking up large
quantities of mineral dust
(e.g. when grinding, slitting
or removing fine dust), use the
VC 20/40 performance filter.
▶ Always use a dust filter bag
when working with wood dust
or chips.
▶ Use a VC 20/40 performance
filter or a dust filter bag.
▶ Change the dust bag.
▶ If the automatic filter cleaning
system is deactivated, activate
it and allow the vacuum cleaner
to run for 30 seconds.
▶ Clean the suction hose and the
dust hood.
▶ Set the hose diameter.
▶ For applications with a hollow
drill bit, select a hose diameter
of 15 mm.
▶ Fit the filter element again
correctly.
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