Wet Vacuuming; Maintenance And Service; Maintenance And Cleaning - Bosch GAS 20 L SFC Professional Notice Originale

power tool. Observe the maximum permitted load of the
connected power tool.
– Fit the extraction adapter (18) (see "Fitting the dust ex-
traction adapter", page 15).
– Insert the dust extraction adapter (18) into the extraction
outlet of the power tool.
Note: When working with power tools that have a low air
feed into the vacuum hose (e.g. jigsaws, sanders, etc.), the
false air intake (26) of the dust extraction adapter (18) must
be opened. Only then can the semi-automatic filter cleaning
(SFC) work without any problems.
To do this, turn the ring above the false air intake (26) until
the opening is at its maximum size.
– To activate the automatic start/stop function of the
dust extractor, briefly press the on/off button (4).
– To start the dust extractor, switch on the power tool con-
nected to the plug socket (3). The dust extractor will start
automatically.
– To stop dust extraction, switch the power tool off.
The automatic start/stop run-on function will run for up to
15 seconds longer in order to extract the remaining dust
from the vacuum hose.
– To switch off the dust extractor, press the on/off
button (4).

Wet vacuuming

Do not use the vacuum cleaner to vacuum combustible
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or explosive liquids, such as petrol, oil, alcohol or
solvents. Do not vacuum hot, burning or explosive
dust. Do not operate the vacuum cleaner in areas sub-
ject to explosion hazards. Dust, vapours and liquids can
ignite or explode.
The vacuum cleaner must not be used as a water
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pump. The vacuum cleaner is designed for vacuuming air
and vacuuming water mixtures.
Steps to Take before Wet Vacuuming
– Open the catches (7) and remove the top part of the va-
cuum cleaner (6).
– Remove the disposal bag (20) or dust bag if necessary.
– Empty the container (1) if necessary.
– Put the top part of the vacuum cleaner (6) on and close
the catches (7).
Vacuuming up liquids
– Switch on the dust extractor.
The dust extractor is equipped with a float. Extraction is
stopped when the maximum filling level is reached.
– Switch off the dust extractor.
– Empty the container (1).
To prevent mould growth after wet extraction:
– Remove the top part of the dust extractor (6), then re-
move the pleated filter (28) and leave everything to dry
thoroughly.
Bosch Power Tools
Semi-automatic filter cleaning (see figure F)
The filter cleaning function should be used regularly, and at
the very latest when the suction power is no longer suffi-
cient.
How often filter cleaning needs to be carried out will depend
on the type and quantity of dust that has been vacuumed.
With regular use, the maximum conveying capacity will be
maintained for longer.
During semi-automatic filter cleaning (SFC), the air flow is
reversed to clean deposited dust from the flaps of the filter.
A pleated filter with surface dirt is still fully functional. It is
not necessary to clean the flat-pleated filter manually by
shaking or blowing it out; this may even damage the filter.
Triggering the SFC Filter Cleaning
– Use the palm of your hand to close the nozzle or vacuum
hose opening.
– Press the SFC switch (11) three times.

Maintenance and Service

Maintenance and Cleaning

Pull the plug out of the socket before cleaning or per-
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forming maintenance on the vacuum cleaner, making
tool adjustments, changing accessories or putting
away the vacuum cleaner. This safety measure prevents
the vacuum cleaner from being started accidentally.
To ensure safe and efficient operation, always keep
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the dust extractor and the ventilation slots clean.
Wear a dust mask when servicing and cleaning the va-
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cuum cleaner.
In order to avoid safety hazards, if the power supply cord
needs to be replaced, this must be done by Bosch or by an
after-sales service centre that is authorised to repair Bosch
power tools.
For the user to carry out maintenance, the dust extractor
needs to be disassembled, cleaned and maintained as far as
this is possible without endangering maintenance personnel
or other persons. Before disassembly, the dust extractor
should be cleaned to prevent any potential hazards. The
room/enclosure in which the dust extractor is disassembled
should be well ventilated. Wear personal protective equip-
ment while carrying out maintenance. After completing
maintenance, the maintenance area should be cleaned.
An inspection regarding the dust extraction capability must
be carried out at least once a year by the manufacturer or
someone who has been trained, e.g. to check for filter dam-
age, that the dust extractor is tight and that the control unit
is functioning correctly.
Class L vacuum cleaners which were located in dirty environ-
ments should have their exteriors, as well as all their com-
ponents, cleaned or treated with sealant. When performing
maintenance and repair work, all dirty parts that cannot be
cleaned satisfactorily must be disposed of. Such parts must
be disposed of in impermeable bags in accordance with the
valid provisions for disposing of such waste.
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1 609 92A 6U1 | (07.10.2021)