Edwards nEXT730D User Manual

▪ PTFE
4.6 Pur
ge gas specicaon
Table 8 Purge gas specicaon
Purge gas specicaon Reference data
Purge gas Dry air, nitrogen, argon or other inert
gases
Maximum dew point at atmospheric pres-
sure
-22 °C
Maximum size of parculates 1 µm
Maximum concentraon of oil 0.1 parts per million
Allowable purge gas ow (when required)
20 to 50 sccm (0.33 to 0.84 mbar l s
-1
or
33 to 84 P
a l s
-1
)
Recommended purge gas ow
25 sccm (0.42 mbar l s
-1
, 42 Pa l s
-1
)
Ma
ximum allowable purge gas supply
pressure
1 bar (gauge); 14.5 psig, 2 x 10
5
Pa
4.7 W
ater cooling
Table 9 Water cooling block supply requirements
Parameter Reference data
Quality Mechanically and opcally clear with no
deposits or turbidity
pH value 6.0 to 8.0
Maximum calcium carbonate concentra-
on
75 parts per million
Maximum chloride concentraon 100 parts per million
Minimum oxygen concentraon 4 parts per million
Minimum water‑cooling ow rate (at
15 °C)
15 l hr
-1
Water temperature range 10 °C to 40 °C
Maximum water pressure
5 bar (gauge), 72.5 psig, 5 x 10
5
Pa g
auge
Materials exposed to cooling water Brass and nickel plated brass
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B8J200880_D - Technical data

Edwards nEXT730D Specifications

General

Brand	Edwards
Model	nEXT730D
Category	Water Pump
Language	English