Xylem SVI Vertical Multistage Centrifugal User Manual

Page 17

English

Overview

The aim of this manual is to supply the indispensable information for the installation, use and
maintenance of electric pumps.
The contents of this manual refer to the standard product as presented in the commercial
documentation. See the sales contract documentation for any variations and features of the special
versions.
Always specify the exact type of pump and the code if you have to ask our Sales and Assistance Service
for technical information or spare parts.
For instructions, situations and events not contemplated by this manual nor by the sales documentation,
contact our nearest Assistance Service.

Read this manual before installing and using the product.

Improper use may cause conditions of danger with damage to persons and
property, and render the guarantee void.

Product description

The SVI range comprises vertical multistage pumps with immersed body, which may be coupled to
normalised electric motors. The SVI range has some metal parts in contact with the water in stainless
steel and others in cast iron. A special version is available in which all the metal parts in contact with the
water are made of stainless steel.

Applications

SVI pumps are typically used to pump cooling and lubricating emulsions in machine tools. They are also
used in washing, filtering and condensate recovery systems, and in all those applications where a
submersible liquid end is required.

Application limits

Not suitable for handling flammable or explosive liquids

Not suitable for handling liquids containing solid, abrasive or fibrous substances.

Pumped fluids should have the same viscosity and density as water. Fluids having greater viscosity and
density require a suitably oversized electric motor. Maximum kinematic viscosity in compliance with
EN12157.

Maximum working pressure:

For versions “E” and “EN” close-coupled = 10 bar

For versions “S” and “N” with coupling = 25 bar

Liquid temperature:

For versions “E” and “EN” close-coupled, standard (gaskets in FPM) from -10°C to +60°C

For versions “E” and “EN” close-coupled, special (gaskets in EPDM) from -30°C to +60°C

For versions “S” and “N” with standard coupling (gaskets in FPM) from -10°C to +90°C

For versions “S” and “N” with special coupling (gaskets in EPDM) from -30°C to +90°C

For versions “S” and “N” with special coupling (gaskets in PTFE) from 0°C to +90°C

Maximum environment temperature +40°C

Maximum number of starts per hour:

20 for powers up to 5.5 kW

15 for powers up to 15 kW

12 for higher powers

WARNING