Edwards nXDS Series User Manual

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Technical data
A735-01-880 Issue C
2Technical data
2.1 Operating and storage conditions
2.2 Performance
2.2.1 General
Note: If the pump is operated outside the specified limits, then the pump housing may become hot; the controller
may reduce the motor speed; and tip seal wear rate will be increased.
WARNING
If the nXDS pump is operated outside the specified limits, the pump housing may become hot.
Table 2 - Operating and storage conditions
Operating and storage conditions nXDS
Ambient temperature range (storage) –30 °C to +70 °C
Ambient temperature range (operation) +5 °C to +40 °C
Maximum humidity (storage in original packaging) ≤ 95% RH
Maximum humidity (operation) 90% RH
Table 3 - Environmental conditions
Environmental conditions
Pollution Pollution degree 2
Installation Installation category II
Altitude restriction Max 3000 m
Area of use Indoor
Table 4 - General characteristics
Description nXDS6i nXDS10i nXDS15i nXDS20i
Peak pumping speed (m
3
h
-1
) 6.2 11.4 15.1 22.0
Maximum permitted continuous inlet pressure (mbar)
*
*
These pumps are designed to pump down from atmospheric pressure, but prolonged operation at inlet
pressures higher than specified may reduce bearing life.
200 200 200 50
Maximum permitted exhaust pressure (bar gauge)
†
†
These pumps are intended to exhaust to atmospheric pressure. High exhaust pressure may reduce tip-seal
life.
1111
Maximum permitted gas ballast inlet pressure (bar gauge) 0.5 0.5 0.5 0.5
Maximum recommended chamber volume to pump down
from atmospheric pressure (litres)
‡
‡
Larger volumes may be pumped, but prolonged operation at inlet pressures higher than specified may
reduce bearing life. The nXDS20i is optimised for constant throughput and is not recommended for cyclic
duty.
25 50 75 75
Maximum pressure rise when stopped, with no inlet or gas
ballast flow (mbar)
7777
Leak tightness (mbar ls
-1
)1 x 10
-6
1 x 10
-6
1 x 10
-6
1 x 10
-6

Edwards nXDS Series Specifications

General

Brand	Edwards
Model	nXDS Series
Category	Water Pump
Language	English