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Vallox Oy | Myllykyläntie 9-11 | 32200 LOIMAA | FINLAND

D

10

68

6 | 0

1.0

6.

20

21 | P

D

F

MANU

AL

PERFORMANCE VALUES

MAINTENANCE OF THE DUCT FAN

1.  Remove the cover panel or spice cabinet above the 

cooker hood.

2.  Unscrew the screws of the duct fan’s service door 

(10 pcs).

3.  Open the fastening nuts, washers, and damper 

rubbers of the fan and remove the fan.

4.  Service the fan and sweep the ducts where 

required.

5.  Assemble in reverse order.

Sound power level in the pressure duct by 

octave band Lw, dB

Adjustment position

Sound power level in the suction duct (from 

the hood) by octave band Lw, dB

Adjustment position

Sound power level in the suction duct (top 

right) by octave band Lw, dB

Adjustment position

Adjustment 

position (V)

2

4

6

8

2

4

6

8

2

4

6

8

Medium

frequency

of the

octave 

band

Hz

63

59

74

81

85

55

62

71

76

51

66

78

81

125

50

71

81

82

51

70

78

82

51

66

75

80

250

45

58

67

71

38

53

63

67

38

54

65

69

500

37

53

61

65

33

51

60

64

30

48

57

61

1000

30

53

60

63

23

44

52

56

23

43

50

54

2000

19

46

57

62

16

35

44

49

14

34

43

48

4000

17

37

49

53

17

24

33

38

17

24

35

40

8000

21

27

44

50

21

21

28

34

21

22

31

37

L

W

, dB

60

76

84

87

57

71

79

83

54

69

80

84

L

WA

, dB (A)

41

59

68

71

38

56

64

68

37

53

63

67

Sound pressure level coming through the envelope of the unit in the room in which it is installed (10m² sound absorption) 

Adjustment 

position (V)

2

4

6

8

L

pA

, dB (A)

22

34

45

50

SOUND VALUES

L

0

50

100

150

200

250

300

350

400

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160

Air flow l/s

Pressure P

a

Total pressure Pa

SFP 0,5 

SFP 0,8 

SFP 1,0  

9 V

8 V

7 V

6 V

5 V

4 V 

3 V

2 V

11 V

Air flow l/s

Power W

Power W

0

10

20

30

40

50

60

70

80

90

100

110

120

0

10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

9 V

8 V

7 V

6 V

5 V

4 V 

3 V

2 V

11 V

10 V

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