Applications; Pumped Liquids; Sound Pressure Level; Drinking Water - Grundfos SP 1A Montage- Und Betriebsanleitung

4. Applications

Grundfos SP submersible pumps are designed for a wide range of
water supply and liquid transfer applications, such as the supply of
fresh water to private homes or waterworks, water supply in
horticulture and agriculture, drawdown of groundwater and pressure
boosting, and various industrial jobs.
The pump must be installed so that the suction interconnector is
completely submerged in the liquid. The pump can be installed
horizontally or vertically. See section Positional requirements.
Related information
5.2 Positional requirements

4.1 Pumped liquids

Clean, thin, non-explosive liquids without solid particles or fibres.
The maximum sand content of the water must not exceed
50/100/150 ppm. A larger sand content will reduce the life of the
pump and increase the risk of blockage.
Pump type
SP 1A - SP 5A
SP 7 - SP 14
SP 17 - SP 60
SP 77 - SP 215
When pumping liquids with a density higher than water
3
(998-1000 kg/m ), motors with correspondingly higher out-
puts must be used.
If liquids with a viscosity higher than that of water are to be pumped,
contact Grundfos.
N EN 1.4401 and R EN 1.4539 grade stainless steel pump sets are
designed for liquids more aggressive than drinking water.
The maximum liquid temperature appears from section Liquid
temperatures and motor cooling.
Related information
5.4 Liquid temperatures and motor cooling
Maximum content of sand
[ppm]
50
150
100
50

4.2 Sound pressure level

The sound pressure level has been measured in accordance with
the rules laid down in the EC machinery directive 2006/42/EC.
Sound pressure level of pumps
The values apply to pumps submerged in water.
Pump type
SP 1A
SP 2A
SP 3A
SP 5A
SP 7
SP 9
SP 11
SP 14
SP 17
SP 30
SP 46
SP 60
SP 77
SP 95
SP 125
SP 160
SP 215
Sound pressure level of motors
The sound pressure level of Grundfos MS and MMS motors is lower
than 70 dB(A).
Other motor brands: See installation and operating instructions for
these motors.

4.3 Drinking water

If the product is used for drinking water, the following precautions
must be taken to avoid contamination:
• Before use, make sure that the product does not come into
contact with dust or with chemicals not suitable for contact with
drinking water, for example lubricants, greases or oils.
• If the pump is used with potentially toxic liquids, it can no longer
be used for drinking water.
• In case of maintenance, be sure to always use original parts to
maintain the initial hygienic characteristics of the product.
L [dB(A)]
pA
less than 70
79
79
82
7