Wilo Sevio AIR P, Installation And Operating Instructions Manual

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20 WILO SE 02/2016 V06 DIN A4
English PRODUCT DESCRIPTION
• Aeration systems that have been operated in me-
dia containing faeces and/or media hazardous to
health must be generally decontaminated before
being used in other media.
Clarification must be sought as to whether the
aeration systems may be used again at all, in
another fluid.
• Consult Wilo customer service for use in highly
flammable, explosive and/or aggressive fluids!
3. Product description
3.1. Intended use
Wilo-Sevio AIR aeration systems are used for air
intake of large to fine bubble air in aqueous media
such as water, pre-purified sewage or sludge, for
the purpose of supplying oxygen.
Use only in industrial sewage after consulting
Wilo customer service!
The fluid temperature must be b5 °C
and +35 °C. Wilo customer service must be con -
sulted for use in media with higher temperatures.
In addition, the surrounding fluid must be free of
any sharp objects. It is recommended to carry out
mechanical cleaning upstream.
The supplied air must not exceed a max. tem-
perature of +60 °C (for higher temperatures
please consult Wilo customer service), must be
free of oil, dust and solvents. Dust filters must
comply with filter class EU4 in accordance with
DIN 24185 and/or F5 in accordance with EN 755
(degree of separation > 90 %).
All filters and insulating material used must not
consist of fibreglass, mineral fibres or other
fibrous materials. Rotary slide valves with graphite
discs must be equipped with an air filter on the
pressure side.
These materials can clog or damage the dia-
phragms.
3.2. Improper use
Aeration systems must not be used in:
• Media containing fats and oils (above 25 ppm)
• Media with organic solvents
• Halogenated compounds
• Anaerobic milieu
3.3. Structure
The Wilo-Sevio AIR P aeration system is com-
posed of one or more aerator fields with multiple
aerator lines. An aerator field forms the basic unit
here and consists of several components:
1 Shut-off ball cock for connection to the inlet pipe
provided by the customer
2 Plastic pipe
3 Saddle clamp with a threaded connection
4 Saddle clamp with two threaded connections
5 Panel diffuser
6
Fixation plate for the fixation of the panel diffuser
7 Connecting pipe for the connection of several panel
diffusers
8 End stopper for sealing the aerator lines
9
Clamp bolting (straight or 90° curve) for the connec -
tion of the PE pipe to the shut-off ball cock
10 Connecting sleeve for the double-sided connection
of the PE pipe (pipe extension)
11
90° mounting bracket for the double-sided connec -
tion of the PE pipe (corner mounting)
3.3.1. Pipework
The PE pipe is supplied either as a rod product or
as a reel. For the installation of reel products we
recommend a roll aid with integrated heating. In
this way the curved pipe is easier to align.
• Length: 6 m for rod products
• Diameter: da 32 (1") or da 63 (2")
Fixation is done with pipe clamps.
3.3.2. Fixation plate
Fixation of the panel diffuser is done with the
fixation plates from polypropylene-GF30. This
can be directly mounted on the basin bottom or,
where required, on threaded rods for subsequent
levelling.
3.3.3. Aerator
The aerator has a PVC housing and a PUR dia-
phragm. The diaphragm is perforated across its
entire surface.
The connection takes place through a connection
nipple in da 32 with an O-ring made of EPDM and
clamp bolting.
The aerator is equipped with a non-return valve.
This prevents fluid from flowing into the piping in
case of a defective diaphragm.
3.4. Function
A fan or compressor pumps air into the aeration
system via the inlet pipe. The air is distributed
evenly into the individual lines and is fed to the
aerators. The aerators distribute the air over the
entire diaphragm surface and channel it into the
fluid.
3.5. Type key
Example: Wilo-Sevio AIR P1475-P-S-150
Sevio Products for sewage treatment
AIR Aerator series
P Panel diffuser
1475 Length of the perforated surface in mm
P Membrane material: PUR
S System
150 Number of aerators per system
3.6. Technical data
• Operating temperature
• Air: 5…60 °C
• Fluid: 5…35 °C