Edwards EDS 300

T3 Temperature class. Pumps belonging to temperature class T3 must only be
operated with gases or vapors which exhibit an ignion temperature of over 200
°C.
3.2 Condions of safe use
The EDS pump must be operated in accordance with the denions of normal use and
operaonal limits as specied within this manual.
Accessories and addional parts ed to the EDS pump must full the requirements of the
ATEX Direcve 2014/34/EU regarding the equipment group and category and they must be
applicable for use in explosive atmospheres of the respecve gas group and temperature
class. Accessories and addional parts should be approved by Edwards otherwise they may
have a detrimental eect on the pump performance and safety.
The mandatory safety instruments specied in this manual must be used and must not be
replaced with alternaves from other manufacturers without consultaon with Edwards.
Only processes which fulll the condions of the normal operaon as specied in this
manual must be used.
EDS pumps must only be used on processes if their materials resist the mechanical and/or
chemical inuences and corrosion, under the respecve operang condions, so that the
explosion protecon is always maintained.
Means for prevenng back-ow of the pumped media must be used if back-ow can result
in process hazards.
Opening the EDS pump is only permied with the pump switched o, isolated from the
electrical supply and in the absence of explosive atmosphere.
Process limits
Inlet pressure: The range of allowable inlet pressures is 0 – 1013 mbar.
Exhaust pressure: The maximum allowable exhaust pressure is 1200 mbar for T3 pumps and
1100 mbar for T4 pumps.
Inlet gas temperature: The maximum allowable inlet gas temperature is 110 °C for inlet
pressures < 150 mbar, and 80 °C for inlet pressures > 150 mbar.
Safety instruments
Refer to Pump body thermal snap switch
(on page 34)
and install and connect all mandatory
safety switches.
4. Descripon
Figure 1 EDS pump models
Page 13
A41802880_C - Descripon