Description And Function; Description Of The Pump - salmson SCX-DCX Instalacion Y Puesta En Servicio

6 Description and function

6.1 Description of the pump

The pump is fitted with a glandless motor (single-phase (1~) or three-phase
(3~), for main connection voltage and mains frequency see the name plate, in
which all the rotating parts are in contact with the fluid. The design relies on the
fluid to provide lubrication for the plain bearings of the rotor shaft.
The motor speed can be switched over. The speed switching is executed in dif-
ferent ways depending on the terminal box. The ways are either by a speed
selection switch, by plugging in the change-over plug differently or by an inter-
nal or external jumpering of the contacts. (see commissioning/speed change-
over).
A suitable change-over switch is available as an accessory for the voltage 3 ~230 V.
The assignment of terminal boxes to the individual pump types is described
in the section "Terminal boxes" (chapter 6.2).
DCX/DXM:
For a twin-head pump the two motor impeller units are fitted identically and
accommodated in a common pump housing.
SXS/NSB-S:
The selected materials and designs of the pumps of this series comply with the
relevant guidelines (TrinkwV2001, ACS,WRAS) and are specially intended for
use under the operating conditions found in drinking water circulation systems.
In systems to the German drinking water regulations 2001, pumps with hous-
ings of bronze (CC 499K) or stainless steel must be used. If pumps of the series
Salmson-SXS in GG (pump housing of grey cast iron) are used in drinking water
circulation systems, the national regulations and guidelines should be complied
with as necessary.
6.2 Terminal boxes
There are four terminal boxes (Fig. 4) covering all the pump types. Table 1 lists
the assignment of terminal boxes to pump types:
Mains Max. power consumption P
connection
(see name plate data)
1~ 95 W Û P
320 W Û P
650 W Û P
3~ 100 W Û P
305 W Û P
Table 1: Assignment of terminal box types to pump types
Installation and operating instructions Salmson SCX-DCX / SXM-DXM / SXS / NSB-S
1
max. Û 265 W
1
max. Û 400 W
1
max. Û 960 W
1
max. Û 270 W
1
max. Û 3 125 W
1
Terminal box type
SCX-SXM
DCX-DXM
4a
4d
4d
4b
4c
NSB-S
SXS
4a
4d
-
4b
4c
English
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