Filter Change On The Filterbox - Bosch FAS-420-TM Operation Manual

FAS-420-TM Aspirating Smoke Detector
7.6

Filter Change on the Filterbox

Figure 7.3 Changing the filter inserts (in fig.: FAS-ASD-FL Filterbox Large)
To replace the filter inserts, proceed as follows (see Figure 7.3):
1.
2.
NOTICE!
In applications with largely fine dust build-up, three fine dust filters can also be used (subject
to separate order).
NOTICE!
Opening the housing cover of the filterbox causes an airflow malfunction in the FAS-420-TM.
Bosch Sicherheitssysteme GmbH
1.
A B
C
2.
Remove the four screws and remove the housing cover.
Remove the old filter inserts and clean the inside of the housing carefully to remove dust.
Now fit the cleaned or new filter inserts. When using the spare filter set for the large
filterbox, ensure you follow the correct sequence (see label on base of housing).
Replace the housing cover and screw it back on.
Operation Guide
Maintenance | en
A Primary filter
B Coarse dust filter
C Fine dust filter
F.01U.088.878 | 4.1 | 2010.11
89