Watson-Marlow 505LA - Manual (Page 9)

ATEX Directive: Watson-Marlow 505LA, 505LXA and 505LGA pumpheads User Manual 9
11 Summary of modifications
ATEX features of the 505LA pumpheads
Conductive rotor assembly
Roller end-caps have been replaced with
conductive POM-C (ESD)
Knurled roller pin: Cuts through anodising on
rotor end-plates to reduce electrical resistance to
earth
Earth strap
Earthing straps connect the track assemblies
to the main body of the pumphead (and to an
extension pumphead, if fitted)
ATEX label
This is a requirement of the Directive and
includes the ATEX rating for the pumphead
ATEX manual
This is an addendum to the existing manual
and includes ATEX-specific information
The table below defines the modifications made to standard 505L pumpheads for
them to satisfy the requirements of the II 2G IIB c T4 ATEX rating: