Bosch Professional GAS 12-25 PL Original Instructions Manual page 19

Note: The friction generated by the dust in the vacuum hose
and accessory during extraction causes an electrostatic
charge that the user may experience as static discharge (de-
pending on environmental factors and their physiological
state).
Bosch generally recommends using an anti-static vacuum
hose (accessory) to vacuum up fine dust and dry materials.
Blowing function (see figure B2)
The vacuum cleaner has a blowing function. Do not
u
blow exhaust air out into the open air. Only use the
blowing function with a clean hose. Dust can be hazard-
ous to health.
– Switch on the dust extractor for at least 5 seconds (mode
selector switch (1) set to the "extraction" symbol) to
clean the vacuum hose (15) of dust deposits.
– Turn the vacuum hose (15) as far as possible in the direc-
tion of rotation and pull it out of the hose connection
piece (3).
– Push the vacuum hose (15) into the hose connection
piece (13) and turn it as far as possible in the direction of
rotation .
Removing/Inserting the Pre-filter
The pre-filter (22) prevents coarse dirt from getting through
and consequently extends the lifetime of the main filter. The
pre-filter must be removed from the container if you intend
to carry out wet vacuuming or to clean the main filter.
Removing the Pre-filter (see figure D1)
– Open the catches (9) and remove the top part of the va-
cuum cleaner (10) (see figure C).
– Remove the pre-filter (22) from the container (7).
Inserting the Pre-filter (see figure D2)
– Insert the pre-filter (22) in the container (7), making sure
that the arrows are pointing towards the hose connection
piece (3).
– Put the top part of the vacuum cleaner (10) on and close
the catches (9).
Removing/Inserting the Main Filter
The main filter (20) is a HEPA pleated filter with extremely
high filtration performance for cleaning exhaust air. You
need to remove the main filter from the container if you in-
tend to carry out wet vacuuming.
Removing the Main Filter (see figure E1)
– Open the catches (9) and remove the top part of the va-
cuum cleaner (10) (see figure C).
– Turn the filter holder (28) as far as possible in the direc-
tion of rotation and take the filter holder, together with
the main filter (20), out of the top part of the vacuum
cleaner (10).
Bosch Power Tools
Inserting the Main Filter (see figure E2)
– Place the filter holder (28), together with the main filter
(20), over the filter basket (29) and turn the filter holder
(28) as far as possible in the direction of rotation
– Put the top part of the vacuum cleaner (10) on and close
the catches (9).
Inserting/removing the wet filter
To make disposal easier when vacuuming water-solid mix-
tures, the vacuum cleaner has a wet filter (21) that separ-
ates the liquid from the solids.
Inserting the Wet Filter (see figure F1)
– Open the catches (9) and remove the top part of the va-
cuum cleaner (10) (see figure C).
– Turn the filter holder (28) as far as possible in the direc-
tion of rotation and take the filter holder, together with
the main filter (20), out of the top part of the vacuum
cleaner (10) (see figure E1).
– Place the wet filter (21) completely over the filter basket
(29).
– Put the top part of the vacuum cleaner (10) on and close
the catches (9).
Removing the wet filter (see figure F2)
– Open the catches (9) and remove the top part of the va-
cuum cleaner (10) (see figure C).
– Pull the wet filter (21) out of the filter basket (29).
– Place the filter holder (28), together with the main filter
(20), over the filter basket (29) and turn the filter holder
(28) as far as possible in the direction of rotation
figure E2).
– Put the top part of the vacuum cleaner (10) on and close
the catches (9).
Inserting/removing the plastic bag or dust bag
(dry vacuuming)
For dry vacuuming, you can insert a plastic bag (19) or a
dust bag (accessory) into the container (7). This makes it
easier to dispose of coarse dirt.
Inserting the plastic bag (see figures G1–G3)
– Open the catches (9) and remove the top part of the va-
cuum cleaner (10) (see figure C).
– Remove the pre-filter (22) from the container (7).
– Insert the plastic bag (19) into the container (7) with the
inlet facing upwards. Secure the plastic bag under the
suction hole (30) using the clips (31).
– Make sure that the plastic bag (19) touches all the inside
walls of the container (7).
– Fold the rest of the plastic bag (19) over the edge of the
container (7).
– Insert the pre-filter (22) in the container (7), making sure
that the arrows are pointing towards the hose connection
piece (3).
English | 19
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(see
1 609 92A 4CP | (09.11.2018)