M588-00-880 Issue E
Page 44 © Edwards Limited 2015. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Operation
4.2.1 Determining pump status
It is not possible to fully determine pump status by referring to only one status LED. By looking at both the running
LED and Green Mode/Standby LED together the user can work out pump status. Refer to Table 20.
4.3 Green Mode/Standby mode
Green Mode is used to reduce the power and purge gas consumption of the pump when off process. All GXS dry
pumping systems can support up to 9 different Green Mode configurations but, by default, only one Green Mode is
enabled. To enable alternative Green Mode configurations please contact your local Edwards service representative.
To enable GREEN MODE/Standby mode when the pump is running and warmed up, press and hold the start button
(Figure 1, item 3) for 5 seconds. The pump GREEN MODE LED (Figure 1, item 10) will illuminate continuously. The
pump Running LED(Figure 1, item 2) will flash.
To disable GREEN MODE/Standby mode, and therefore enable on-process mode, press and hold the start button
(Figure 1, item 3) for 5 seconds. If the pump has warmed up, the pump GREEN MODE LED (Figure 1, item 10) will go
out and the pump Running LED (Figure 1, item 2) will illuminate continuously. If the pump has not warmed up, both
the GREEN MODE LED and the pump running LED will flash until the pump is fully warm. The GREEN MODE LED will
then go out and the running LED will illuminate continuously to indicate that the pump is now on-process.
Table 21 - Green Mode/Standby sequence
The GXS dry pumping system can also be set into GREEN MODE/Standby mode using the following methods:
PDT, by the commands menu, refer to Appendix A2.4.4.
MCM MicroTIM, refer to the MicroTIM manual D373-60-880.
By commands sent over the serial interface using the SIM protocol, refer to the SIM Manual P411-00-200, or
using the E54 protocol.
Table 20 - Pump status
Pump running LED Green Mode/Standby LED Pump status
Off Off Pump stopped
Flashing Flashing Pump is warming up
Flashing Illuminated continuously Pump is in Green Mode/Standby
mode
Illuminated continuously Off Pump is on-process
Flashing Off Pump is shutting down
Sequence Description
GREEN MODE/Standby Inlet isolation valve closed (if fitted).
Pump runs at standby (GREEN MODE) speed.
Gas ballast valve closed (medium duty pumps only).
If pump temperature drops below working temperature then it will start to warm up
again.
Pump ready line will be off if pump is not warmed up.
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