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1.2 Notes
The symbols and notes below may appear in
Grundfos installation and operating instructions,
safety instructions and service instructions.
Observe these instructions for explosion-
proof products.
A blue or grey circle with a white graphical
symbol indicates that an action must be
taken.
A red or grey circle with a diagonal bar,
possibly with a black graphical symbol,
indicates that an action must not be taken
or must be stopped.
If these instructions are not observed, it
may result in malfunction or damage to the
equipment.
Tips and advice that make the work easier.
6
2. Product introduction
2.1 Product description
2.1.1 Tank
The gas-, odour- and pressure-tight tank is made of
resistant polyethylene. The tank has all necessary
ports for the connection of inlet pipes, outlet pipe,
vent pipe and a manually operated diaphragm pump
available as an accessory.
Inside the tank the two pump connections are
connected to a suction bend enabling suction from
the bottom. As a result, the residual volume is
reduced to a minimum.
The table below shows the tank volume and the
effective volume. The effective volume is the volume
between start and stop.
Number of tanks
Tank volume [l]
Effective volume with
stop delay [l]
Effective volume without
stop delay [l]
2.1.2 Pumps
The pumps are standard wastewater pumps with
supporting feet for horizontal installation. The pumps
come in two versions:
MULTILIFT
Pump version
system
SE1, SL1 pump with single-
MD1
channel impeller
SEV, SLV pump with SuperVortex
MDV
impeller
1
2
3
450
900
1350
225
450
675
150
300
450
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