Watson-Marlow 700 series - Manual (Page 2)

ATEX Directive: Watson-Marlow 700 series pumpheads User Manual 2
2 Pump models
The following 700 series pumps are covered by this manual:
701RA ATEX Pumpheads
701RA 073.0101.A00
Driven roller pumphead
for baseplate pumps (continuous)
701REA 073.0104.A00
Driven roller pumphead
for baseplate pumps (elements)
701RXA 073.0111.A00
Extension pumphead
for baseplate pumps (continuous)
701REXA 073.0114.A00
Extension pumphead
for baseplate pumps (elements)
701RGA 073.0121.A0G Baseplate pumphead for STA-PURE tubing
Any 700 series pumpheads not listed here are NOT suitable for use in
hazardous environments (at date of issue).
3 Hazardous environments
All of Watson-Marlow’s ATEX pumps are classified as Group II, Category 2 equip-
ment under the definitions of 94/9/EC:
“Group II, Category 2 products should be designed to be capable of remaining within
their operational parameters, as stated in the instruction manual, and based on a
high level of protection for their intended use, in areas in which explosive atmos-
pheres caused by mixtures of air and gases, vapours, mists or air/dust mixtures are
likely to occur.”
Furthermore, “The explosion protection relating to this category must function in
such a way as to provide a sufficient level of safety even in the event of equipment
with operating faults or in dangerous operating conditions which normally have to
be taken into account”.
Watson-Marlow pumps must not be used in the underground parts of mines,
and in surface installations of such mines, likely to become endangered by
firedamp and/or combustible dust.
NB: where two or more items of ATEX equipment are combined, the complete
assembly shall carry the same rating as the lowest ranking individual piece of equip-
ment.