INSTRUCTION REF: IN176
ISSUE No. 1
DATE 2.01.08
Page 23 of 59
TELEPHONE:
SERVICE (44) 01332 875665
FAX:
SERVICE (44) 01332 875536
Parry Group Limited,
Town End Road, Draycott, Derby, England DE72 3PT
www.parry.co.uk
Silencer Noise Reduction
If the noise generated by the fan in an extraction canopy is causing a problem in
terms of noise either inside or outside the kitchen, a silencer can be purchased
which when fitted correctly will reduce the noise generated by the fan.
Resultant
Resultant
Resultant
Resultant
Fan
Noise
Noise
Noise
Noise
Fan ref
Noise
Level
Level
Level
Level
Level
with 1D ST
with 1D POD
with 2D ST
with 2D POD
Silencer
Silencer
Silencer
Silencer
ZSC315-41
46 dBA
39 dBA
36 dBA
34 dBA
32 dBA
ZSC400-41
51 dBA
44 dBA
41 dBA
39 dBA
37 dBA
ZSC450-41
55 dBA
48 dBA
45 dBA
43 dBA
41 dBA
ZSC500-41
53 dBA
46 dBA
43 dBA
41 dBA
39 dBA
1D ST
is one fan diameter long without a centre pod
1D POD is one fan diameter long with a centre pod
2D ST
is two fan diameters long without a centre pod
2D POD is two fan diameters long with a centre pod
All noise levels are measured at a distance of 3 metres
ZSC Fan noise levels with silencer noise reductions