General Description; Applications; Operating Conditions - Grundfos SEG AUTOADAPT Montage- Und Betriebsanleitung

2. General description

SEG AUTO pumps are ideal for use in sparsely
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populated areas where gravity sewage systems are
not available.
SEG AUTO pumps are designed with a grinder
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system which grinds solid particles into small pieces
so that they can be led away through discharge
pipes of a relatively small diameter.
Warning
Special conditions for safe use of SEG
explosion-proof pumps:
• Bolts used for replacement must be
class A2-70 or better according to EN/
ISO 3506-1.
• The thermal protector in the stator
windings has a nominal switch
temperature of 150 °C and must
guarantee the disconnection of the
power supply. The power supply must
be reset manually.
Fig. 1 SEG AUTO
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Pos. Description
1 Cable plug
2 Electronic unit
3 Discharge flange DN 40
4 Discharge port
5 Lifting bracket
6 Stator housing
7 Level sensor
8 Oil screw
9 Clamp
10 Dry-running sensors
11 Pump foot
12 Pump housing

2.1 Applications

SEG AUTO pumps are designed for pumping
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these liquids:
• domestic wastewater with discharge from toilets
• sewage from restaurants, hotels, camping sites,
etc.
The compact design makes the pumps suitable for
both temporary and permanent installation. The
pumps can be installed on an auto-coupling system
or stand freely on the bottom of a pit.

2.2 Operating conditions

SEG AUTO pumps are designed for
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intermittent operation (S3). When completely
submerged, the pumps can also operate
continuously (S1). See section
modes.
Installation depth
Maximum 10 metres below liquid level.
Operating pressure
Maximum 6 bar.
Number of starts per hour
Maximum 30.
pH value
Pumps in permanent installations can be used for
pumping liquids with a pH value between 4 and 10.
Liquid temperature
0-40 °C.
For short periods (maximum 10 minutes), a
temperature of up to 60 °C is permissible (standard
versions only).
Warning
Explosion-proof pumps must never pump
liquids with a temperature higher than 40
°C.
Density of pumped liquid
3
Maximum 1000 kg/m .
In case of higher values, see Grundfos Product
Center on www.grundfos.com or contact Grundfos.
10.2 Operating
5