Storage; Handling; Installation; Bada Atex Non-Return Valve Installation - Formula Air Rva-X Serie Wartungshandbuch

3.2. Storage

Store the RVA-X ATEX rotary valves assembled, palletized, and covered and protected from atmospheric agents.
For prolonged storage, make regular checks that the rubber blade vanes don't degrade and that the bearings are
greased to avoid corrosion. Refer to the manufacturer's manuals for the proper long-term storage of the motor and
gear.

3.3. Handling

The RVA-X ATEX rotary valves are foreseen with flanges on which lifting eyes can be bolted for easy handling while
installing. Always lift with an even weight distribution to avoid damages. Never lift the RVA-X ATEX rotary valves by
mobile or sensitive parts of the rotary valve.
Make sure that the mounting surface is even, stable and that it can bear the load of the RVA-X ATEX rotary valve to
ensure the proper functioning of the RVA-X ATEX rotary valves.

4. Installation

4.1. RVA-X ATEX rotary valve installation
Before installing, make sure that nothing is obtruding the flanged connection of the RVA-X ATEX rotary valve and of
the vessel on which it is to be mounted.
Use a sealant tape, or paste all along the flange before assembly on the vessel to ensure perfect airtightness. But be
careful that it doesn't come into contact with the rubber blade vanes or other mobile parts.
All of the holes along the flange pattern should be bolted to the vessel to ensure proper airtightness and weight
distribution of the RVA-X ATEX rotary valve. We recommended the use of M10x35 bolts tightened at 64 Nm.
Make sure that the RVA-X ATEX rotary valve is level so that the material to extrude is evenly distributed along the
RVA-X ATEX rotary valve rotor.
CAUTION !
The RVA-X ATEX rotary valve installation, connection, start-up and maintenance has to be performed in absence of
potentially explosive atmosphere through the process interruption.
The installation, connection, start-up and maintenance of the RVA-X ATEX rotary valves have to be performed by
qualified personnel. Use the appropriate equipment and clothing, apply the necessary safety measures and do not
work alone.
The RVA-X ATEX rotary valve must not be started until it has been mechanically connected on both sides to other
ducting components by means of the built-in flanges.
The RVA-X ATEX rotary valve must be sealed on both sides (dust inlet and outlet) and bolted in all the predrilled holes
of the flanged connection using appropriate bolts and nuts.
Before any intervention, it is mandatory to make sure that the whole installation is stopped and that it is impossible to
inadvertently set it back in operation before everything is connected and assembled.
4.2

Electrical connection

Electrical connection must only be carried out by a certified electrician. When making the electrical connection, check
that the RVA-X ATEX rotary valve rotor is turning in the correct direction. The rotation direction is indicated by an
arrow shaped out on the rotation disk protection cover.
The electrical connection must be carried out in accordance with current local and national
regulation.
4.3

Earthing (Electrostatic bond)

Electrostatic bonding of an RVA-X ATEX rotary valve must be carried out before commissioning.
All conductive parts and electrical equipment shall be connected to each other and earthed. The earthing and
bonding instructions from the motor supplier shall be followed.
No electric potential difference between all metal parts within the machine, or between machine and
earth may exist. Therefor earthing resistance between all metal parts and earth shall be measured before
operation and shall be maximum 10
structure. An earthing resistance higher than 10
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User manual | RVA Rotary valves ATEX
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6 Ω between individual items and to earth and the connected process
6 Ω may indicate bad earth connections.