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CHTRa
10.2 Technical information
10.2.1 Noise characteristics
NOTE
The specified noise characteristics are based on proper installation of the pump (set)
in accordance with this manual. Improper isolation of pump (set) and building/plant
and/or an inappropriate piping layout may increase noise emission and/or the
vibration level.
Table 24:
Sound pressure level [dB] depending on octave band
Size
Number of
stages
Octave band [Hz]
Weighted sound
pressure level
[dB(A)]
32
63
125
250
500
1000
2000
4000
8000
3×6×9-5
9
76,1
81,1
80,1
79,1
74,1
69,1
67,1
64,1
59,6
76,6
10.2.2 Clearances
Fig. 41:
Clearance between neck bush and shaft (S1/2) and between balance drum
and balance bush (S1/2)
