Flowserve Type R Manual de usuario descargar pdf (Pagina 10)

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

at 1 m (3.3

ft) from the machine, for “free field conditions over a

reflecting plane”.

For estimating sound power level L

(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 μPa)

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

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 55 56

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