Note On The Ex-Zone Classification By The Operator - WAGNER PXM Operating And Assembly Manual

VERSION 08/2015
OPERATING AND ASSEMBLY MANUAL
3.4

NOTE ON THE EX-ZONE CLASSIFICATION BY THE OPERATOR

Decreased intrinsic emission is used by the PXM powder center to create a reduced zone
extension as compared to classifi cation and presentation as per EN 12981 (version 2010/06)*
and BGI 764 (version 2009/10, as per 2014/02)*.
The permanent openings are facilitated. It is ensured by design and construction.
Therefore, operation is permitted only upon compliance with all the following requirements:
– The minimum air extraction rate corresponds to the operating manual and is ensured
– The powder center can only be operated when technical ventilation equipment is
active (interlock with exhaust air)
– The open box is not fl uidized, the fl uidized box is only operated with "cover for box"
– The fl uidized tank is closed with "cover for fl uidized tank"
– The powder hoses and connections are airtight
– Necessary cleaning times are kept short
– The notes in the operating manual on safe operation are being observed.
Compliance with all the requirements and measures results in no relevant powder
discharge. The zone extension caused by the powder center can be seen in the following
images:
* The EU standard and BG information are being revised. The exemptions shall be taken
into account in future versions.
ORDER NUMBER DOC2350372
P_02590
Zone 20 in the tank and in the sieve chamber of the ultrasonic sieve
Zone 22 within the powder center
No zone caused by the powder center
PXM
13