R and RX SLURRY Pump USER INSTRUCTIONS ENGLISH
71569242 03-11 (E)
Page 10 of 54
®
1.8 Specific machine performance
For performance parameters see section 1.5,
Duty
conditions
. When the contract requirement specifies
these to be incorporated into User Instructions these
are included here. Where performance data has been
supplied separately to the purchaser these should be
obtained and retained with these User Instructions if
required.
1 9 Noise level
Attention must be given to the exposure of personnel to
the noise, and local legislation will define when
guidance to personnel on noise limitation is required,
and when noise exposure reduction is mandatory. This
is typically 80 to 85 dBA.
The usual approach is to control the exposure time to
the noise or to enclose the machine to reduce emitted
sound. You may have already specified a limiting noise
level when the equipment was ordered, however if no
noise requirements were defined, then attention is
drawn to the following table to give an indication of
equipment noise level so that you can take the
appropriate action in your plant.
Pump noise level is dependent on a number of
operational factors, flow rate, pipework design and
acoustic characteristics of the building, and so the
values given are subject to a 3 dBA tolerance and
cannot be guaranteed.
Similarly the motor noise assumed in the “pump and
motor” noise is that typically expected from standard and
high efficiency motors when on load directly driving the
pump. Note that a motor driven by an inverter may show
an increased noise at some speeds.
If a pump unit only has been purchased for fitting with
your own driver then the “pump only” noise levels in the
table should be combined with the level for the driver
obtained from the supplier. Consult Flowserve or a noise
specialist if assistance is required in combining the values.
It is recommended that where exposure approaches
the prescribed limit, then site noise measurements
should be made.
The values are in sound pressure level L
pA
at 1 m (3.3
ft) from the machine, for “free field conditions over a
reflecting plane”.
For estimating sound power level L
WA
(re 1pW) then
add 17 dBA to the sound pressure value.
R and RX Slurry
pump size
Noise Level dBA
(at 1 m (3 ft) reference 20
μ
Pa)
Pump speed
rpm
Sound Power
Level dBA
1.25R090
74
2000
88
2.5 R091
75
2250
89
3 R091
75
2250
89
3 R111
77
2000
91
4 R122
80
1780
94
5 R142
80
1600
94
6 R163
81
1350
95
8 R193
82
1180
96
10R234
83
1000
97
12R264
83
880
97
18R416
86
1180
100
