Gas Ballasting The Edwards Xds46I Oil-Free Roughing Pump - Waters Xevo TQ-S Operator's, Overview And Maintenance Manual

Gas ballasting the Edwards XDS46i oil-free roughing
pump
Requirement:
detailed here, please refer to the manufacturer's documentation provided with
the instrument.
Caution:
pump life.
The following procedure applies only to the Edwards XDS46i roughing
Note:
pump; the XDS100B roughing pump is not fitted with a gas ballast control.
The roughing pump draws large quantities of solvent vapor that condense
inside the pump, contaminating it. Gas ballasting prevents this condensation.
Warning:
the roughing pump: it can be hot.
Caution:
• Do not vent the instrument when the roughing pump is gas
ballasting.
• Do not gas ballast the roughing pump while the instrument is in
Operate mode.
4-30 Maintenance Procedures
In addition to the roughing pump gas ballasting procedure
Failure to routinely gas ballast the roughing pump shortens
TP03165
To avoid burn injuries, take great care while working with
Gas ballast control