Intended Use; Mixed Liquids; Technical Data; Potentially Explosive Environments - Grundfos AMG Series Installation And Operating Instructions Manual

2.2 Intended use

These mixers and flowmakers are designed for
mixing in industrial applications.
2.2.1 Applications
These mixers and flowmakers are intended to be
used in the following areas:
• municipal and industrial wastewater treatment
• industrial processes
• sludge treatment
• agriculture
• biogas plants.

2.3 Mixed liquids

Observe the following liquid limitations to avoid
overloading and exposing the mixers and flowmakers
to corrosion.
Liquid temperature range
pH value
Maximum dynamic viscosity
Maximum density
Chloride content
*The liquid temperature range is stated on the
nameplate.
For the mixing of liquids exceeding the values stated
above, contact Grundfos.
2.3.1 Mixers
Mixers are suitable for a wide range of applications
involving liquids with a typical dry solids (DS) content
stated in the table below.
Activated sludge
Sludge in selector
zones
Sludge in anoxic zones
Sludge in bivalent
zones
Sludge in anaerobic zones
Primary sludge
2.3.2 Flowmakers
Flowmakers are suitable for activated sludge with a
typical dry solids (DS) content of 0.5 to 1.0 % and for
other liquids with a dry solids content of maximum 1.5
%.

2.4 Technical data

5 to 40 °C (*60 °C)
4 to 10
500 mPas
3
1060 kg/m
≤ 200 mg/l
(for Stainless steel
1.4301)
*Standard cable lengths of 15 and 25 metres are
≤ 1000 mg/l
available on request.
(for Stainless steel
The mixers and flowmakers are designed for
1.4404)
continuous operation.

2.5 Potentially explosive environments

Use explosion-proof mixers or flowmakers in
potentially explosive environments.
0.5 % DS
0.5 % DS
0.5 % DS
0.5 % DS
0.5 % DS
≤ 3 % DS
Secondary sludge
Digested sludge
Wastewater tank without screen
Wastewater tank with sand
Voltage tolerance
Enclosure class
Insulation class
Maximum installation depth
Maximum number of starts
per hour
Power supply cable length
Wire length on all winches
The explosion protection classification of
the mixer or flowmaker is Ex eb h ib IIC T3
Gb.
The classification of the installation must
be approved by the local authorities.
≤ 6 % DS
≤ 8 % DS
≤ 2 % DS
≤ 2 % DS
± 5 %
IP68
F
20 m below the liq-
uid surface
20
10 m (standard)*
10 m (standard)*
7