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riicWARCS
A419-00-880 Issue K
2.4
Cooling water supply
Table 9
•
Cooling water
supply
Cooling water items
Reference data
Maximum supply pressure
7
barg,
7 x 10
5
Pa,
100 psig
Minimum required pressure differential across supply and return
2
bar,
2 x 10
5
Pa,
30 psi
Maximum supply temperature
35 °C
Minimum supply temperature
15 °C
Maximum particle size in supply
0.03 mm
2
,
4.6 x 10·
5
inch
2
Typical heat removed from EPX pump
1.3
kW,
5118 btu h-
1
Minimum water flow rate
2 l min-
1 ,
31.7 US gallons h-
1
Connectors
Inlet
Per customer specification
Outlet
Per customer specification
2.
5
Nitrogen purge system
(EPX
N series
pumps)
Table 10
-
Nitrogen
supply
Gas Module Items
Reference Data
Nitrogen supply interface
1/
4 inch (6.35 mm) tube
Maximum supply pressure
7
barg,
7 x 10
5
Pa, 100 psig
Minimum supply pressure
3.0
barg,
3 x 10
5
Pa,
45 psig
Minimum purity
0.9995
Typical nitrogen purge flow at a supply pressure of 3.0 barg
25 slm (17 slm gas ballast)
2.
6
Materials
in
contact
with
process gases
Table
11
•
Materials
in
contact with
process
gas
Material items
Reference data
Pump body
Hard anodised aluminium
Pump rotor
Hard anodised aluminium
Internal shaft seals
PTFE coated aluminium
0-rings
Viton fluoroelastomer
Pump shaft
Carbon steel
Gas module nitrogen components
Stainless
steel,
hard anodised aluminium and viton
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Edwards
Limited
2017.
All rights
reserved.
Page
17
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and
the Edwards logo are
trademarks
of
Edwards
Limited.
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