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Page 11
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Technical data
A541-11-880 Issue A
2.5
Cooling water data
2.6
Nitrogen purge system (iXL120N series pumps)
Table 11 - Water cooling system data
Description
Rating
Units
Maximum supply pressure
6.9
100
barg
psig
Minimum supply pressure
2.5
36
barg
psig
Minimum flow rate required
*
*
The table specifies minimum water flow rate that is required at 30 °C cooling water. The water flow
rate can be reduced if colder water is supplied. Contact Edwards for additional information. Maximum flow
of 5 l min
-1
to prevent condensation at 10 °C cooling water.
1
l min
-1
Cooling-water supply temperature range
10 – 30
°
C
Water type
Treated or non-corrosive industrial
Maximum particle size
0.03
mm
2
Acidity
6.5 to 8.0
pH
Hardness
< 100
ppm of CaCO
3
(<100 mg of CaCO
3
per litre)
Resistivity
0.001
≤
ρ
≤
1
Mohm-cm
Solids (turbidity)
< 100
ppm
Materials in contact with cooling water
Stainless steel, polyamide,
fluoroelastomer, nitrile, PVDF and PTFE
Water inlet connection
per customer specification
Water outlet connection
per customer specification
Table 12 - 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
ISO 8573 solids class 1
Typical flow at 3.0 bar
4 slm