Bosch GAS 50 Professional Original Instructions Manual page 9

OBJ_BUCH-943-001.book Page 9 Wednesday, March 11, 2009 11:37 AM
Electromagnetic filter cleaning
The machine is equipped with an electromag-
netic filter cleaning system, which removes dust
adhering to the folded filter 17.
The filter cleaning system must be actuated lat-
est when the vacuuming performance is no long-
er sufficient.
Set the mode selector switch 4 to the symbol
electromagnetic filter cleaning. A possibly con-
nected power tool must be switched off.
The machine vibrates for approx. 10 seconds
and switches off automatically.
When operating the vacuum cleaner in electro-
magnetic filter cleaning mode, the vacuum
cleaner checks the airflow. When the airflow is
too low due to a clogged/soiled folded filter and
the connected power tool is switched off since
at least 10 seconds, the electromagnetic filter
cleaning is automatically started. The vacuum
cleaner vibrates for approx. 10 seconds and
switches off automatically.
Wait shortly before restarting the vacuuming op-
eration so that the dust can settle in the contain-
er.
The filter cleaning frequency depends on the
type and amount of dust. With regular usage,
the maximum vacuuming performance is main-
tained longer.
Wet Vacuuming
Do not vacuum inflammable or explosive
fluids; for example, benzene, oil, alcohol,
solvents. Do not vacuum hot or burning
dust. Do not operate the machine in rooms
where the danger of an explosion exists.
The dusts, vapours or fluids can ignite or ex-
plode.
The vacuum cleaner may not be used as a
water pump. The vacuum cleaner is intended
for vacuuming air and water mixtures.
Before any work on the vacuum cleaner it-
self, pull the mains plug.
Note: Before wet vacuuming, the dust bag 16
must be removed and the container 9 must be
emptied.
Bosch Power Tools
The machine is equipped with level sensors 19.
The vac switches off when the maximum filling
height is reached. Set the mode selector switch
4 to off.
After vacuuming, remove the folded filter 17 in
order to avoid mildew, and allow it to dry thor-
oughly, or remove the vacuum lid 3 and allow it
to dry.
Application Possibilities
The vacuum cleaner is suitable for vacuuming
and extracting the following materials:
– Fine dusts below the general dust limit value
3
of 3 mg/m
– Dusts of mineral materials with aluminium
hydroxide
– Graphite dusts
– Aluminium dusts *
– Paper dusts *
– Soot dusts *
– Powder-paint dusts *
– Polyurethane dusts *
– GFRP dusts based on epoxy resin, see manu-
facturer's data sheet on safety *
– CFP dusts based on epoxy resin, see manu-
facturer's data sheet on safety *
* When not being used in zone 22 according to
ATEX Product Guideline 94/9/EC and ATEX Op-
eration Guideline 1999/92/EC
Maintenance and Service
Maintenance and Cleaning
Before any work on the vacuum cleaner it-
self, pull the mains plug.
For safe and proper working, always keep
the vacuum cleaner and ventilation slots
clean.
If the replacement of the supply cord is neces-
sary, this has to be done by Bosch or an author-
ized Bosch service agent in order to avoid a safe-
ty hazard.
If the vacuum cleaner should fail despite the
care taken in manufacturing and testing proce-
dures, repair should be carried out by an after-
sales service centre for Bosch power tools.
1 609 929 L88 | (11.3.09)
English | 9