Edwards nEXT400 User Manual

Figure 8 Max allowed rate of pressure rise during venng: pr
essure against me (pump inially at
full speed)
3.4 Purge gas specic
a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 an atmospheric
pressure
-22 °C
Maximum size of parculates 1 µm
Maximum concentraon of oil 0.1 parts per million
Permied purge gas ow (when necessary)
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 permied supply pressure of the
purge gas
1 bar (gauge), 14.5 psig, 2 x 10
5
Pa
3.5 Cooling w
ater
Re
fer to Table: Cooling water specicaon for the cooling water specicaon. The
cooling water supply must be a high‑quality drinking water specicaon. Check with the
water supply authority if there is doubt about the quality of the supply.
Table 9
Cooling water specicaon
Cooling water specicaon Reference data
Quality
Mechanically clean and opcally clear
with no deposits or turbidity
04/2022 - ©Edwards Limited
Page 28B80000880_G
B80000880_G - Technical data

Edwards nEXT400 Specifications

General

Brand	Edwards
Model	nEXT400
Category	Water Pump
Language	English