36
system
air
Number of filtering cells per cross section with different air handling unit sizes
SIZE
2 - 1
2 - 1,5
3 - 1,5
4 - 1,5
2 - 2
3 - 2
4 - 2
5 - 2
2 - 3
3 - 3
4 - 3
5 - 3
6 - 3
2 - 4
3 - 4
4 - 4
5 - 4
6 - 4
7 - 4
8 - 4
592 x 592
1
1
2
2
1
1
2
2
3
2
2
4
4
6
6
8
592 x 287
1
1
1
2
2
3
287 x 592
1
1
1
1
2
2
2
287 x 287
1
1
592 x 490
1
1
2
287 x 490
1
SIZE
3 - 5
4 - 5
5 - 5
6 - 5
7 - 5
8 - 5
9 - 5
10 - 5
3 - 6
4 - 6
5 - 6
6 - 6
7 - 6
8 - 6
9 - 6
10 - 6
12 - 6
4 - 7
5 - 7
6 - 7
592 x 592
2
4
4
6
6
8
8
10
3
6
6
9
9
12
12
15
18
6
6
9
592 x 287
1
2
2
3
3
4
4
5
2
2
3
287 x 592
2
2
2
2
3
3
3
3
3
287 x 287
1
1
1
1
1
SIZE
7 - 7
8 - 7
9 - 7
10 - 7
12 - 7
4 - 8
5 - 8
6 - 8
7 - 8
8 - 8
9 - 8
10 - 8
12 - 8
5 - 9
6 - 9
7 - 9
8 - 9
9 - 9
10 - 9
12 - 9
592 x 592
9
12
12
15
18
8
8
12
12
16
16
20
24
8
12
12
16
16
20
24
592 x 287
3
4
4
5
6
2
3
3
4
4
5
6
287 x 592
3
3
4
4
4
4
4
4
287 x 287
1
1
1
1
1
3.4.1
Bag or cassette filter
Caution
During operation, all the covers and service doors of the section must be kept closed at all times. The fan
may not operate with the fan section door open.
Commissioning
If not already installed, insert the filter cassettes into the support frame:
•
insert the filter cassettes into the support frame,
•
with one level (the entire cross section) filled with filter cassettes, press the cassettes by means of the lock profile
against the guide, which has sealing tape applied,
•
repeat the procedure until the entire cross section of the section casing is filled,
•
check the connection of the pressure measuring hoses to the pressure measurement ports and connect the hoses if
necessary.
Maintenance
The filters must retain their filtering efficiency throughout their service life. In order to guarantee their performance in
terms of maintaining air quality, regularly check the following, for each filter stage:
• the pressure drop
• the accumulated hours of operation
•
the visual appearance of filters (cracks in the filtering medium, leakage between the filters and the filter frame).
Caution
In the event of noticeable contamination, cracking in the filtering medium or leakage between the filters
and the frame, replace the filters regardless of the current pressure drop or hours of operation.
Time to replace filters:
•
when the allowable final pressure drop is achieved,
• when the replacement interval has expired,
•
when the filter performance, in mechanical or hygienic terms, is no longer adequate,
•
if the filters become contaminated following air handling unit installation or reconstruction,
• if requested by the sanitary inspection.