Dry Pump Clean; High Flow Purge - Edwards GXS Series Instruction Manual

restarted. If the alarm was caused by high pump temperatures, refer to
down and alarms
on page 54.

4.10 Dry pump clean

The high flow purge and the solvent flush kit is available as a factory‑fit option to clean
the pump mechanism on applications where large quantities of dust and sticky deposits
are encountered. The cleaning process is run while the pump is in green mode/standby
mode and is carried out without the need to remove the pump enclosure. A PDT is
required to initiate the DP clean process. Refer to
Table 25 DP clean sequence
Sequence
Dry pump clean
The DP clean high flow purge and solvent flush procedures can be run as often as
required.

4.10.1 High flow purge

Use the following procedure to prepare for the high flow purge:
1. Set up the dry pumping system ready for the high flow purge procedure as
described in
2. Put the pump into green mode/standby mode. Refer to
on page 57.
3. Using the PDT, press the Setup button to enter the setup menu and then select the
Command menu. An access code is needed to enter the Command menu. Enter
202 when prompted.
4. Scroll down to the DP clean menu and then press ENTER to select.
5. Select 'DP clean on' to start the high flow purge procedure.
The DP clean sequence will run automatically without requiring any operator
intervention. Once the DP clean time has elapsed, the dry pumping system will return to
green mode/standby mode settings. The pump can then be put back on‑process.
M58800880_H - Operation
on page 61. Restart the dry pumping system as described in
Description
▪ Only operates when the pump is running in green mode/
standby mode.
▪ Purge gas or the solvent fluid is admitted into the pump for a
configurable time (default 20 minutes).
▪ Pump speed during the dry pump clean is configurable
(default 40 Hz).
▪ Gas purges may be configured to be on during the clean cycle
and/or for a period after the DP clean valve has closed
(default off).
▪ Pump is not able to go on‑process until the cycle has
completed.
▪ If dry pump clean is stopped by the user then the purge cycle
is completed.
▪ DP clean may be configured to start automatically when the
pump goes off process.
High flow purge and solvent flush set up
Page 63
Unplanned shut
Table: DP clean sequence
on page 51.
Green mode/standby mode
Start up
for details.