Level Of Pumped Liquid; Accessories; Operating Mode; Enclosure Class - Grundfos S Serie Notice D'installation Et De Fonctionnement

3.2.6 Level of pumped liquid

For a submerged pump, installation type C, the lowest stop level
must always be above the pump housing.
Warning
Install an additional level switch to ensure that
the pump is stopped in case the stop level switch
is not operating.
Installation
Description
type
Sewage pump without
cooling jacket for
S
submerged installation on
auto coupling.
Sewage pump with cooling
jacket for submerged
C
installation on auto
coupling.
Sewage pump with cooling
D jacket for dry vertical
installation.
Sewage pump with cooling
H jacket for dry horizontal
installation.
Sewage pump without
cooling jacket for
ST
installation in vertical
column pipe.
To ensure adequate cooling of the motor during operation, the
following minimum requirements must be met:
• Installation type S:
The pump must always be covered by the pumped liquid to the
top of the motor.
Warning
For FM-approved pumps of installation type S,
the liquid level must always be to the top of the
motor.
• Installation type C:
The pump housing must always be covered by the pumped
liquid.
6

Accessories

Auto coupling
Auto coupling
Fig. 1
Range 50, 54, 58
and 62: Base stand
• Installation types D and H:
for vertical
No special requirements.
installation.
• Installation type ST:
Range 66 and 70:
The liquid level must be at least 14" (350 mm) above the pump
Base plate for
inlet, see fig. 10.
vertical installation.

3.2.7 Operating mode

Base stand for
The pumps are designed for continuous operation or for
horizontal
intermittent operation with the maximum number of starts per
installation
hour stated in the table below:
Seat ring

3.2.8 Enclosure class

IEC IP68.

3.3 Sound pressure level

Installation types S, C
Installation type S
Installation types C
Liquid level
S pump, range
50
54
58
62
66
70
Warning
Depending on the installation type the sound
pressure level of the pump can be higher than
70 dB(A).
When working nearby such an installation in
operation, hearing protection must be used.
Starts per hour
20
15