Edwards A730-01-983, Instruction Manual, Page: 15 / 40

Sound pressure, measured at ultimate vacuum
1 metre from the end of the pump to ISO 3744
and ISO 4871
57 dB (A)
Vibration: measured at the inlet port (ISO 3744) Class 1C...< 4.5 mm s-
1
(rms radial)
*Use at higher inlet pressure speeds up the tip seal wear.
†Enhanced version is not limited for maximum chamber volume or number of cycles per
hour.
3.2.1 Pumping media
WARNING:
Risk of fire. Do not use this pump to pump pyrophoric materials or dust.
The pump is designed to pump the following gases:
▪ Air
▪ Carbon dioxide
▪ Helium
▪ Carbon monoxide
▪ Nitrogen
▪ Argon
▪ Oxygen (O
2
)
The pump can be used to pump water vapour. Caution must be taken to ensure that
vapour does not condense inside the pump. Refer to Gas ballast control on page 23 on
how to prevent condensation of water vapour in the pump.
If pumping a vapour or gas not in the list above, contact us for advice.
3.2.2 Performance characteristics
The position of the gas ballast control defines the performance characteristics of the
pump.
Note:
Does not apply to No Gas Ballast variants
Table 3
Performance characteristics
Gas ballast control
position
XDS35i Ultimate to-
tal pressure (mbar)
XDS35iE Ultimate
total pressure
(mbar)
Gas ballast flow
(l min
-1
)
0 < 0.01 < 0.03 -
1 < 0.02 < 0.04 3
2 < 10.0 < 10.0 12
11/2020 - ©Edwards Limited Page 13 A73001880_N
A73001880_N - Technical data