Wilo Wilo-Sevio AIR, Инструкция по установке и эксплуатации

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Installation and operating instructions Wilo-Sevio AIR 51
PRODUCT DESCRIPTION English
4. Product description
4.1. Proper use
The Wilo-Sevio AIR disc aerator and aerator systems are used for fine-bubble air
inclusion in liquids such as water, waste water or sludges, for the purpose of supplying
oxygen to the liquids.
The temperature of the liquid must be b5 °C and 30 °C. If the products are to
be used in liquid with higher temperatures, the manufacturer must be consulted. The
surrounding liquid must also be free of objects with sharp edges. We recommend that
the liquid be pre-cleaned with a filter.
The supplied air must be free of oil, dust and solvents. Dust filters must correspond to
filter class EU4 according to DIN 24185 (degree of separation >90%).
All filters and insulating materials in use may not be made of fiberglass, mineral fibers or
other materials consisting of fine fibers. Rotary slide valves with graphite fins must be
equipped with an air filter on the pressure side.
These materials can lead to clogging of or damage to the membranes.
4.2. Construction
A Wilo-Sevio AIR aerator system consists of one or more aerator groups. An aerator
group forms the base unit and consists of several components:
Fig. 1.: Aerator system component overview
1
Air distributor with connecting flange for
the intake line (down pipe)
6 Disc aerators
2 Base support for air distributor 7 Basin bottom
3
Intake line (down pipe); must be installed
by the customer.
8
Pipe coupling for connecting the individ -
ual components
4
Aerator pipe with pre-assembled disc
aerators
9 Drainage connection
5 Base support for aerator pipe 10
Drainage line; must be installed by the
customer.
4.2.1. Piping
The pipes are pre-fabricated in components that can be easily used:
• PVC air distributors in the diameters of 90 mm, 160 mm and 200 mm with central or
lateral DN 80 to DN 200 flange connection for the intake line. Larger diameters are
available in stainless steel with DN 125 to DN 350 flange connections.
• PVC aerator pipes with 90 mm external diameter or made from stainless steel with
88.9 mm external diameter with pre-assembled disc aerator