Summary Of Modifications; Atex Marking; Key - Watson-Marlow 505LA Manual Del Usuario

17

Summary of modifications

ATEX features of 505L pumpheads
Conductive rotor
assembly
Earth strap
ATEX label
ATEX manual
18

ATEX marking

The 505LA pumpheads have been marked with the following labels:
18.1

Key

II
2G
Ex h
IIB
T4
Gb
Special conditions of use for safe operation - See section 12 "Special conditions of use for
X
safe operation - Tube materials suitable for use with this equipment" on page 20
PB0379:m-505atex-en-04
Roller end-caps have been replaced with conductive POM-C (ESD)
Knurled roller pin: Cuts through anodising on rotor end-plates to reduce
Earthing straps connect the track assemblies to the main body of the pumphead
(and to an extension pumphead, if fitted)
This is a requirement of the Directive and includes the ATEX rating for the
This manual has been produced specifically for this ATEX product and contains
Equipment Group II for above ground areas (surface)
Equipment Category 2G (Gas) - Zone 1
Ignition protection labelling for mechanical devices
Group IIB – typical gas: Ethylene
Temperature classification (Gas) ≤ 135°C
Group II (Gas); protection Level: High
electrical resistance to earth
pumphead (II 2G Ex h IIB T4 Gb X)
information for safe use.
Watson-Marlow Ltd
TR11 4RU, United Kingdom
Tech. File Ref. ATEX-WM
II 2G Ex h IIB T4 Gb X
33