Edwards nEXT300 User Manual

WARNING: DANGEROUS GASES
Risk of damage t
o equipment. In the interstage and booster versions of the
nEXT pumps, gas pumped through the interstage port will mix with gas pumped
through the pump inlet. Make sure that the gases do not react or combine to form
dangerous gases and substances.
WARNING: HIGH OPERATING PRESSURE
Risk of damage t
o equipment. Do not exceed the maximum connuous operang
pressure. Failure to do so can cause dangerous rotor temperatures and will decrease
the life of the pump.
WARNING: VACUUM EXPOSURE
Risk of injury
. Do not expose the part of the human body to the vacuum.
WARNING: MERCURY VAPOUR
Risk of damage t
o equipment. Do not use a nEXT pump to pump mercury vapour. Do
not allow mercury (for example, from a McLeod gauge) to come in contact with the
pump. If mercury vapour is pumped, the pump rotor can corrode and fail.
Note:
Concen
traons of gases can be changed by the compression of the pump.
The pumps are designed to pump the residual gases used in high‑vacuum systems are:
▪ Air
▪ Methane
▪ Propane
▪ Butane
▪ Carbon monoxide
▪ Nitrogen
▪ Hydrogen
▪ Carbon dioxide
▪ Neon
▪ Krypton
▪ Helium
▪ Ethane
▪ Argon
To pump a g
as that is not listed, contact the supplier for an advice. Failure to contact the
supplier can invalidate the warranty of the pump. The pump is not applicable for
pumping aggressive or corrosive gases.
The pump can be used to pump the oxygen and water vapour, with the condions that
follows:
04/2022 - ©Edwards Limited
Page 30B80000880_G
B80000880_G - Technical data

Edwards nEXT300 Specifications

General

Brand	Edwards
Model	nEXT300
Category	Water Pump
Language	English