Technical Datasheet; Preventing Ignition Sources; Transportation, Storage & Handling; Transportation - Formula Air Rva-X Serie Wartungshandbuch

2.3

Technical datasheet

Selection, installation and maintenance of the electrical parts within hazardous areas shall be fulfilled according the
EN60079-14 and the installation instructions of the specific equipment.
The RVA-X ATEX rotary valve should only be exposed to organic or non-metallic dust.
The user has to install detection devices that, in case an explosion is detected, will automatically and instantaneously
stop the RVA-X ATEX rotary valve. These detection devices are not subject of the RVA-X ATEX rotary valve certificate
nor of this user guide.
The airtightness of the rubber blade vanes has to be controlled regularly according to the instructions in this user
manual (see point 4.4.1).
Ambient temperature range
Maximum allowed product temperature
Dust type and property
Maximum output speed of gearbox
Required torque with motor 0,37kW
Required torque with motor 0,55kW
RVA-X model
RVA1-X1;3-06
RVA2-X1;3-06 to
RVA4-X1;3-06
2.4

Preventing ignition sources

The following measures have been applied to prevent ignition sources from occurring within the RVA-X ATEX rotary
valve :
Frictional heating in shaft seals.
Frictional heating in bearing.
Frictional heating or sparking from
grinding rotor.
Glowing particles from external
process.
Electric motors and gearboxes
Isolated metal parts may become
electrostatically charged due to
internal friction.
CAUTION !
Selection and installation of these parts within hazardous areas shall be fulfilled according to EN 60079-14 or local
legislation and the installation instructions of the specific equipment.
3. Transportation, storage & handling

3.1. Transportation

The RVA-X ATEX rotary valves are shipped assembled, palletized, and properly packed to prevent shifting and
damages during transport and handling. The RVA-X ATEX rotary valves should always be transported covered and
protected from atmospheric agents.
CAUTION !
Do not stack during transport !
6
User manual | RVA Rotary valves ATEX
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Maximum reduced pressure
P (kPa)
red, max
70
50
Low circumferential speed.
Bearings shall be inspected, lubricated
and replaced according.
to IOM.*
Low circumferential speed and periodic
inspection of clearance and rotor condition
prescribed in IOM.*
End user responsibility, instructions added
to IOM.*
Electric motor and gearbox shall be ATEX
approved if the application requires it
Earthing and bonding prescribed in
IOM.*
*Interval of maintenance, see §5.1
from -20° C to +60° C
60° C
organic non-metal dust
Kst,max=200 bar.m.s-1
21 rpm
70Nm
160Nm
Pressure resistance
P (kPa)
red, max
90
60