Agilent Technologies TriScroll 620 Series, Installation And Operation Manual

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DRAFT 1
0/30/14
TriScroll 620 Series Vacuum Pump
16
Gas Ballast
The gas ballast port (item 9 on Figure 3 on page 11) is
sealed on the TriScroll 620.
For applications where a lot of water is being pumped,
dry nitrogen at a flow rate of

5 lpm can be bled into the
gas ballast port. See “Purge Kit” below.
Bearing Purge
The bearing purge port (item 6 on Figure 3 on page 11) is
sealed on the TriScroll 620 and must not be opened or
used.
Purge Kit
A purge kit (Agilent part number PTSPURGEKIT) to
properly purge the gas ballast is available. This kit
contains a flow meter and all necessary valving and
tubing.
CAUTION
The bearing purge port has been
disabled on the TriScroll 620 model.
Use of this port could cause internal
damage to the pump.