Dry Vacuuming - Bosch GAS 55 M AFC Professional Notice Originale

Dry vacuuming

Vacuuming up dust deposits
– Adjust the volume flow controller (6) to suit the hose dia-
meter used.
– To switch on the dust extractor, set the
mode selector switch (7) to the "extraction"
symbol.
– To switch off the dust extractor, set the
mode selector switch (7) to the "switch off"
symbol.
The dust extractor is fitted with airflow monitoring. In the
"vacuuming" operating mode, the volume flow monitoring is
fixed to a value of 20 m/s, irrespective of the setting of the
volume flow controller (6).
If the value falls below this, e.g. due to accumulated dirt in
the vacuum hose, a full dust bag or a clogged flat-pleated fil-
ter, an audible alarm signal will sound. In this case, switch off
the dust extractor and check it as described in the "Rectify-
ing faults" section.
Extracting dust that accumulates from working power
tools (see figure G)
There must be a sufficient air exchange rate (L) in the
u
room when the exhaust air comes back into the room.
Be aware of the corresponding national regulations.
The dust extractor has an electric socket with a protective
earth contact (5), which can be used to connect an external
power tool. Observe the maximum permitted load of the
connected power tool.
In order for sufficient dust transport to be ensured at the ex-
traction point, the volume flow must not fall below the min-
imum specified for the connected power tool.
Hose diameter
35 mm
22 mm
15 mm
– Adjust the volume flow controller (6) to suit the hose dia-
meter used.
– Fit the extraction adapter (25) (see "Fitting the dust ex-
traction adapter", page 21).
– Insert the extraction adapter (25) into the dust 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 (25) must
be opened. This will ensure that the automatic filter cleaning
function works correctly.
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, set the op-
erating mode selector switch (7) to the
"automatic start/stop" symbol.
In this operating mode, the volume flow is
electronically monitored according to the
Bosch Power Tools
setting of the volume flow controller (6).
Sufficient dust transport is ensured when
the setting is correctly selected.
– To activate the dust extractor, switch on the power tool
that is plugged into the electric socket (5). The dust ex-
tractor 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, set the
mode selector switch (7) to the "switch
off" symbol.
If the acoustic warning signal sounds, the dust extractor
must be checked as described in the "Rectifying faults" sec-
tion.
Wet extraction (see figure H)
Do not use the vacuum cleaner to vacuum combustible
u
or explosive liquids, such as petrol, oil, alcohol or
solvents. Do not vacuum hot or burning dust. Do not
operate the vacuum cleaner in areas subject to explo-
sion hazards. Dust, vapours and liquids can ignite or ex-
plode.
The vacuum cleaner must not be used as a water
u
pump. The vacuum cleaner is designed for vacuuming air
and vacuuming water mixtures.
Note: The requirements for the degree of penetration (dust
class M) have only been verified for dry extraction.
Steps to Take before Wet Vacuuming
– Remove the disposal bag (29) or dust bag if necessary.
Note: Use a wet filter bag (accessory), which separates li-
Volume flow setting
quid from solids, to make disposal easier when vacuuming
3
57.9 m /h
water-solid mixtures.
3
41.2 m /h
– Fit the rubber lip (32) in the floor nozzle (34) (see "Fit-
3 ting the rubber lip (wet extraction) (see figure E)",
12.7 m /h
page 22).
– Switch off the automatic filter cleaning (AFC) (see "Auto-
matic filter cleaning (see figure I)", page 24).
Vacuuming up liquids
– To switch on the dust extractor, set the mode selector
switch (7) to the "extraction" symbol.
The dust extractor is equipped with fill level sensors (40).
The dust extractor shuts down if the maximum fill level has
been reached. Set the mode selector switch (7) to the
"switch off" symbol.
Note: When extracting non-conductive liquids (e.g. drilling
emulsion, oils and fats), the dust extractor will not switch off
when the container is full. The fill level must be constantly
monitored and the container emptied in good time.
If the acoustic warning signal sounds during wet extraction,
the operating reliability of the dust extractor is not affected.
No measures to rectify the fault are necessary.
– To switch off the dust extractor, set the mode selector
switch (7) to the "switch off" symbol.
English | 23
1 609 92A 4LZ | (19.11.2018)