20
f (Hz)
63
125
250
500
1000
2000
4000
8000
Total
2
13
21
26
26
25
23
20
6
32
3
21
29
34
34
33
31
28
14
40
4
28
36
41
41
40
38
35
21
47
5
34
42
47
47
46
44
41
27
53
6
38
46
51
51
50
48
45
31
57
7
42
50
55
55
54
52
49
35
61
8
45
53
58
58
57
55
52
38
64
9
47
55
60
60
59
57
54
40
66
10
48
56
61
61
60
58
55
41
67
11
50
58
63
63
62
60
57
43
69
12
52
60
65
65
64
62
59
45
71
w (m/s)
lindab | we simplify construction
Smoke Control Damper
SDJR-S
Lindab reserves the right to make changes without prior notice
Last modified: 2021-09-03
Rev: 2021-03-26
Tab. 7.1.3. Sound power level Lw in dB(A) for B=200/400/600/800/1000/1200mm, damper fully open
w - air velocity in the free cross section (AxB) - i.e. before blades
f - frequency of octave band
8. Material
8.1.
Damper casing and damper blade are made of galvanized plate without any other surface finish.
8.2.
Fasteners are galvanized.
8.3.
The actuator cover is made of fire-resistant material (fire protection board)
Material, finish
9. Inspection, testing
9.1.
9.1. The appliance is constructed and preset by the manufacturer, its operation is dependent on proper installation and
adjustment.
Inspection, testing
