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Table 6 Gas module types and flows
Gas module type
Light duty (All GXS
systems)†
Electronically controlled gas ballast purge
Medium duty (GXS160
(with manually adjusted flow) + inlet
and GXS250 systems)†
Gas ballast purge (with manually adjusted
Medium duty (GXS450
flow) + inlet purge + exhaust purge +
and GXS750 systems)†
option of an additional electronically
* By default the dry pumping system is supplied with the additional gas ballast which is switched off. This additional gas ballast can be enabled in software
using an optional PDT.
† The dry pumping systems in a standard configuration must run with a seal purge. If the application requires removal of a seal purge, consult our
application specialist.
M58800880_H - Technical data
Description
Shaft seal only
purge + exhaust purge
controlled gas ballast*
Cycle
Shaft
Inlet
seal
purge
purge
Off
0
n/a
Green mode
12
n/a
On process
12
n/a
Shut down
12
n/a
Off
0
0
Green mode
12
0
On process
12
0
Shut down
12
16
Off
0
0
Green mode
12
0
On process
12
0
Shut down
12
26
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Gas flows (slm)
Manually-
adjusted
Additional
Exhaust
gas
gas ballast*
purge
ballast
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
0
n/a
0
0
n/a
6
0-34
n/a
6
0
n/a
6
0
0
0
0-64
0
6
0 (default)
0-64
6
64 (enabled)
0-64
0
6
Total
flow
0
12
12
12
0
18
18-52
34
0
18-82
18-146
44-108
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