Lowering The Pump Onto Auto Coupling - Grundfos S2 Instrucciones De Instalación Y Funcionamiento

4.1.3 Lowering the pump onto auto coupling

The pump can easily be pulled out and lowered into the pit by
means of the guide rails. The stop level is lower for installation
type C (submerged with cooling jacket) than for installation type S
(submerged without cooling jacket). See fig. 26.
Fig. 7 Upper guide rail bracket
Fig. 8 Intermediate guide rail bracket; guide rails longer than
20 ft (6 m) require intermediate guide rail brackets
Correct plinth height for installation on auto coupling is important
in order to obtain the best efficiency for the pump.
ANSI
Fig. 9 Auto-coupling base installation on a plinth
8
The minimum required plinth heights (A) for installation on auto
coupling appear from the following table.
Pump type
Range 72
S2.35.A100.xxxx.x.x
S2.40.A100.xxxx.x.x
S2.40.A120.xxxx.x.x
S3.40.A120.xxxx.x.x
S3.45.A200.xxxx.x.x
S3.50.A200.xxxx.x.x
Range 74
S2.40.xx.xxx.xxxx.x.x
S3.40.xxx.xxx.xxxx.x.x
S3.45.xxx.xxx.xxxx.x.x
S3.50.xxx.xxx.xxxx.x.x
Range 78
S3.xx.xxx.xxx.xxxx.x.x
S4.xx.xxx.xxx.xxxx.x.x
Fig. 10 Lowering the pump onto an auto coupling
Minimum plinth height (A)
[in (mm)]
17 (431)
15.75 (400)
16.75 (425)
15.75 (400)
16.75 (425)
16.75 (425)
Required tilt angle
when the pump is
lowered onto the
auto coupling: 5 °
± 5 °