Bosch GAS 12-40 MA Professional Manual Original página 28

28 | English
Problem
Dust is escaping during extraction
Automatic switch-off (wet extraction)
is not working.
Acoustic warning signal sounds.
Acoustic warning signal sounds during
wet extraction.
The automatic filter cleaning function
is not working.
Manual filter cleaning cannot be
triggered.
The automatic filter cleaning function
is not activated.
After-Sales Service and Application Service
Our after-sales service responds to your questions concern-
ing maintenance and repair of your product as well as spare
parts. You can find explosion drawings and information on
spare parts at: www.bosch-pt.com
The Bosch product use advice team will be happy to help you
with any questions about our products and their accessor-
ies.
In all correspondence and spare parts orders, please always
include the 10‑digit article number given on the nameplate
of the product.
1 609 92A 91Y | (02.02.2024)
Remedy
Check that the flat-pleated filter (34) has been fitted correctly.
Clean or change the flat-pleated filter (34).
Clean the fill level sensors (43) and the space between the fill level sensors (43) us-
ing a cloth.
Check the fill level regularly.
Suction power setting too low.
Set the suction power regulator (11) to a higher setting.
Hose diameter setting is wrong.
Set the correct vacuum hose diameter.
Vacuum hose (30) is blocked or twisted.
Remove blockage or untwist hose.
Fleece filter bag full
Change the fleece filter bag (33).
Flat-pleated filter (34) is dirty.
Clean or change the flat-pleated filter if required.
The airflow supplied by the connected power tool is insufficient
Open the false air intake on the power tool if there is one or use a suitable dust extrac-
tion adapter with a false air intake.
Malfunction of the monitoring electronics
Contact an authorised Bosch after-sales service centre.
No measures necessary.
The automatic filter cleaning function only activates when the airflow drops below a
specific level. To check the filter is working or to manually clean the filter, switch to
manual mode by pressing the manual filter cleaning button (9).
Over-temperature protection of the dust extractor is activated.
Pressing the manual filter cleaning button (9) continuously ten times has triggered the
over-temperature protection. The over-temperature protection will be automatically
suspended after 20 s.
Pressing the manual filter cleaning button (9) continuously 30 times has triggered the
over-temperature protection. The over-temperature protection will be automatically
suspended after 4 min.
If the problem persists, contact an authorised Bosch after-sales service centre.
Contact an authorised Bosch after-sales service centre.
Great Britain
Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Denham Uxbridge
UB 9 5HJ
At www.bosch-pt.co.uk you can order spare parts or arrange
the collection of a product in need of servicing or repair.
Tel. Service: (0344) 7360109
E-Mail: boschservicecentre@bosch.com
Bosch Power Tools