Edwards GXS Series User Manual

4.5.3 Front panel control operaon
Press and hold the stop buon (Figure: Front panel controls, item 4) for 5 seconds to
stop the pump in Auto shut down mode (recommended). Repeat within 10 seconds to
stop the pump in the Fast shut down mode. The running LED (Figure: Front panel
controls, item 2) ashes while the pump is slowing down and will then turn o when the
pump has shut down.
4.6 Automac shut down
Normally, if an alarm condion exists, the control system will shut down the dry
pumping system. When the dry pumping system shuts down, all the purge gas valves
close and the pump stops. For the dry pumping systems containing a dry pump and
booster combinaon, some alarms will cause only the booster to stop, and not the full
dry pumping system.
Table 23
Alarm acons
Alarm descripon
Alarm stops the dry pump
Alarm stops the booster
pump
EMS or system conguraon fault Yes Yes
Exhaust pressure* Yes Yes
Booster stator temperature† No Yes
Dry pump stator temperature Yes Yes
Booster status† No Yes
Dry pump status Yes Yes
* Not applicable to systems with light ‑ duty gas module.
† Not applicable to systems which do not contain a booster.
4.7 Unplanned shut down and alarms
The dry pumping system is ed with a number of pump protecon sensors that will
give warnings and alarms. Refer to Table: Pump protecon sensors.
Table 24 Pump protecon sensors
Sensor
Warning condion
triggered
Alarm condion
triggered
Exhaust pressure transducer* 0.3 barg (4.4 psig) 0.4 barg (5.8 psig)
DP TEMP temperature
GXS160 and GXS160/1750 150 °C 160 °C
GXS250 and GXS250/2600 150 °C 165 °C
All GXS450 dry pumping systems 170 °C 180 °C
All GXS750 dry pumping systems 180 °C 190 °C
MB stator temperature 120 °C 130 °C
* Not available on the dry pumping systems with the light ‑ duty gas module.
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M58800880_H - Operaon

Edwards GXS Series Specifications

General

Brand	Edwards
Model	GXS Series
Category	Water Pump
Language	English