Filter Cleaning; Maintenance And Service; Maintenance And Cleaning - Bosch GAS 55 M AFC Professional Originalbetriebsanleitung

OBJ_BUCH-1747-003.book Page 23 Tuesday, September 30, 2014 10:13 AM
– To switch the vacuum cleaner off, set the mode
selector switch 7 to the "Off" symbol.
When the alarm sounds, the vacuum cleaner must be checked
as described under "Correction of Malfunctions".
Wet Vacuuming (see figure H)
 Do not vacuum inflammable or explosive fluids; for ex-
ample, 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 explode.
 The vacuum cleaner may not be used as a water pump.
The vacuum cleaner is intended for vacuuming air and wa-
ter mixtures.
 Before any work on the vacuum cleaner itself, pull the
mains plug.
Note: The requirements for the ingress degree (dust category
M) have only been proven for dry vacuuming.
– Remove the disposal bag 29 or the dust bag and empty the
container 1 before wet vacuuming.
Note: For easier disposal when vacuuming liquid-solid mix-
tures, use a wet filter bag (accessory), which separates liq-
uids from solids.
– Mount the rubber lips into the floor nozzle (see "Inserting
the Rubber Lip", page 22).
– Switch the automatic filter cleaning (AFC) off (see "Deacti-
vating the AFC", page 23).
The vacuum cleaner is equipped with filling-level sensors 40.
When the maximum filling height is reached, the vacuum
cleaner switches off. Set the mode selector switch 7 to the
"off" symbol.
Note: When vacuuming non-conductive liquids (e. g. drilling
emulsion, oil and grease), the vacuum cleaner is not switched
off when the container is full. The level must be monitored
continuously and the container emptied in time.
When the alarm sounds while wet vacuuming, the operational
safety of the VAC is not impaired. No measures are required to
correct the malfunction.
– Pull the drain hose 23 from its holder and drain the dirty
water via the drain hose.
– For transport of the vacuum cleaner, screw the plug cap 2
onto the hose connection piece 3.
To prevent the formation of mould after wet vacuuming:
– Take out the flat-fold filter 30 and allow it to dry well.
– Remove the vacuum cleaner lid 13 open the filter cover 39
and allow both components to dry thoroughly.
Bosch Power Tools

Filter Cleaning

Automatic filter cleaning (see figure I)
In automatic filter cleaning mode (AFC = Automatic Filter
Cleaning), the flat-fold filter 30 is cleaned every 15 seconds
by means of air blasts (pulsating noise).
The filter cleaning system must be actuated at the latest when
the vacuuming performance is no longer sufficient.
Regular use of the filter cleaning feature increases the tool life
of the filter.
To achieve ideal filter tool life, deactivate the automatic filter
cleaning in exceptional cases, e. g., when vacuuming pure liq-
uids or when working with a paper filter bag.
A flat-fold filter contaminated only on the surface is fully func-
tional. Manual cleaning of the flat-fold filter by striking/tap-
ping against it or blowing it out is not necessary, and can even
damage the filter.
Note: The automatic filter cleaning is factory-set.
Switching the automatic filter cleaning on/off is only possible,
when the VAC is running.
– Deactivating the AFC
Actuate the AFC button 9.
The signalling LED 38 goes out.
– Activating the AFC
Actuate the AFC button 9.
The signalling LED 38 lights up green.

Maintenance and Service

Maintenance and Cleaning

 Before any work on the vacuum cleaner itself, pull the
mains plug.
 For safe and proper working, always keep the vacuum
cleaner and ventilation slots clean.
 Wear a dust protection mask when maintaining and
cleaning the vacuum cleaner.
If the replacement of the supply cord is necessary, this has to
be done by Bosch or an authorized Bosch service agent in or-
der to avoid a safety hazard.
A dust-technical inspection is to be carried out at least once
every year by the manufacturer or an instructed person, e. g.
for damage of the filter, tightness against leakage of the vacu-
um cleaner and function of the control/monitoring unit.
For category M vacuum cleaners that were in contaminated en-
vironments, the exterior as well as all machine parts should be
cleaned or treated with sealants. When performing maintenance
and repair work, all contaminated components that cannot be
cleaned to satisfactory must be disposed of. Such components
must be disposed of in impermeable plastic bags conforming
with the valid regulations for the disposal of such waste.
For maintenance on behalf of the user, the vacuum cleaner
must be disassembled, cleaned and maintained as far as fea-
sible, without causing a risk for the maintenance personnel or
other persons. Prior to disassembly, the vacuum cleaner
should be cleaned in order to prevent any risks. The room/en-
closure in which the vacuum cleaner is disassembled should
be well ventilated. Wear personal protective equipment dur-
ing maintenance. After the maintenance, the maintenance ar-
ea should be cleaned.
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