10
381497 USA 10-2014
APV
1.1 The Ws+ range
This manual covers the standard version of the Ws+ pump, which is
supplied pre-fitted with recirculation connection, and a simplified
version, which has no recirculation.
Units are designed and constructed to meet the requirements of 3-A
sanitary standards for cleanability of processing equipment.
1.2 Selection of the standard or simplified pump
1. The standard Ws+ pump should be installed as a normal liquid ring
pump, i.e. with a "swan neck" (two x 90° bends) on the inlet and a
length of vertical pipe on the outlet. (See length H in Fig. 2).
2. However, in many CIP pump applications, it is possible to simplify
the pipe layout and bring the inlet pipe directly (horizontally) to the
Ws+ pump inlet and eliminate the recirculation connection. For the
pump to function in this manner, there the inlet pipework must meet
the specifications detailed in Section 2.2. If in doubt, the standard
Ws+ with swan neck and recirculation connection must be used.
1.3 The Ws+ pump, options and extras
Standard Options are available in the Ws+ range:
- with frame and feet
- with shaft seal in carbon/SiC or SiC/SiC
- with o-rings in EPDM or FPM (Viton)
- with single mechanical shaft seal or double mechanical shaft seal
prepared for water-flushed shaft seal.
Additional Options:
- drain valve
- pump trolley
- Ws+ pumps can be supplied with all standard welded ferrules
(Tri-clamp, bevel seat, ISO etc.).
1.4 Identifying the pump model
A nameplate as is fitted on the extension frame (Fig. 1).
Example:
Type: Indicates pump model, such as Ws+ 20/15, Ws+ 30/30, etc.
Serial No.: Use the serial number whenever requesting information on
service parts.
Order No.: SPX's order number.
Year: Indicates the year of manufacture.
1. Introduction to the Ws+ program
Fig. 1: Nameplate
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