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Section 1................................................................Introduction and Safety
6. SAFE NOISE LEVEL
ISO PRO pump noise level is dependent on a number of factors – the type of driver used, the
operating conditions, pipe-work design and acoustic characteristics of the building. The below table is
a guide to calculating the noise level for a pump unit with any given driver.
Approximate Noise Level Table
Driver Sound Level dB(A)
60 - 64
65 - 69
70 - 74
75 - 79
80 - 84
85 - 89
If pump unit noise level exceeds 85 dBA attention must be given to prevailing Health and Safety
Legislation, to limit the exposure of plant operating personnel to the noise. The usual approach is
to control 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 machines above a certain power level will exceed 85 dBA. In such
situations consideration must be given to the fitting of an acoustic enclosure to meet local regulations.
7. LEAKAGE PREVENTION
The pump must only be used to handle liquids for which it has been approved to have the correct
corrosion resistance. Avoid entrapment of liquid in the pump and associated piping due to closing of
suction and discharge valves, which could cause dangerous excessive pressures to occur if there is
heat input to the liquid. This can occur if the pump is stationary or running.
Bursting of liquid containing parts due to freezing must be avoided by draining or protecting the pump
and ancillary systems.
8. SAFETY NOTE
a. Read the instruction manual before installation, operation and maintenance of the equipment.
Check and confirm that the manual is relevant copy by comparing pump type on the nameplate and
with that on the manual.
b. The products supplied by Pentair Southern Cross have been designed with safety in mind. Where
hazards cannot be eliminated, the risk has been minimized by the use of guards and other design
features. Some hazards cannot be guarded against and the instructions below must be complied
with for safe operation. These instructions cannot cover all circumstances; You are responsible for
using safe working practices at all times.
c. Pentair Southern Cross products are designed for installation in designated areas, which are to
be kept clean and free of obstructions that may restrict safe access to the controls and maintenance
Correction For Unit - Add to motor noise level dB(A)
7
ISO PRO Centrifugal Pump
12.0
10.0
8.0
6.5
5.0
4.0
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