Grundfos SE1 50 Notice D'installation Et De Fonctionnement page 31

1
Position of the air vent screw
Pos. Description
1 Air vent screw
Related information
7.4 Direction of rotation
8.1.2 Oil check and change
8.1.2.1 Oil quantities
7.2 Operating mode
SE1 and SEV pumps are suitable for:
• dry installation without separate motor cooling
• submerged installation.
S1, continuous operation
In this operating mode, the pump can operate
continuously when the pump housing is
completely submerged.
P
O
S
S1 operation
Pos. Description
O Operation
S Stop
7.3 Start and stop levels
The difference between the start and stop levels
can be adjusted by changing the free cable length
of the float switch.
Long free cable = large difference in level.
Short free cable = small difference in level.
• To prevent air intake and vibrations, install the
stop level switch, so the pump is stopped
before the liquid level reaches the upper edge
of the clamp.
• Install the start level switch, so the pump is
started at the required level. The pump must
always be started before the liquid level
reaches the bottom of the inlet pipe to avoid
back flooding the sewers.
CU 100 must not be used for Ex
FM
applications.
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