Automatically Initiating A Clean Cycle When The Pump Goes Off-Process; Turn The Inlet Purge On During The Clean Cycle; Have Inlet Purge Cycle After Clean Cycle; Allow On Process - Edwards GXS Series Instruction Manual

9.9.3 Automatically initiating a clean cycle when the pump goes off-process

The dry pump can be configured to automatically start the dry pump clean cycle when it
goes off‑process. This is useful if the pump requires regular cleaning on a particularly
dirty process. This mode is enabled by setting enable in the Start in the Green mode
menu item.

9.9.4 Turn the inlet purge on during the clean cycle

To increase the gas flow through the dry pump during a clean cycle, it is possible to
configure the inlet purge gas valve to be open during the clean cycle. This mode is
enabled by setting enable in the Inlet purge menu item.

9.9.5 Have inlet purge cycle after clean cycle

For some processes it is desirable to ensure that the pump is both fully dry and
internally warm after a clean cycle has been completed. The pump can be configured to
have an optional inlet purge cycle where the pump runs at full speed. To enable this
option, use the Purge time menu item and set the purge time to a value greater than
zero.

9.9.6 Allow on process

Allows a DP Clean to start while the pump is on‑process.

9.9.7 Auto on shut down

When enabled, a DP clean cycle occurs after every pump auto shutdown.

9.10 How to control the pump speed

By default, both the dry pump and booster runs at full speed while the pump is
on‑process. For some applications, it is advantageous to adjust the speed of the pump
while it is on‑process so the system has the capability to run both the dry pump and
booster at different speeds.
The speeds of the dry pump and booster can be controlled using a number of different
methods as shown in
Table 51 Speed control sources
Speed control sources:
Normal speed (default)
External voltage 0-10 V input*
SIM protocol over one of the serial RS232 interfaces
SIM protocol over the Ethernet interface
As a second speed controlled from the PDT*
As a second speed controlled from the MCM MicroTIM*
M58800880_H - Pump display terminal
Table: Speed control
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sources.