High Flow Purge And Solvent Flush Set Up - Edwards GXS Series Instruction Manual

3. An access code is needed to enter the FIT ACCESSORY menu. Enter 538 when
prompted.
4. From the FIT ACCESSORY menu, scroll down to GAS BALLAST and then select
ENTER.
5. Scroll down to 'Fitted' and press ENTER to select.
6. The additional gas ballast is now enabled.

3.14 High flow purge and solvent flush set up

WARNING:
By default the DP clean high flow purge and solvent flush assembly draws the
atmospheric air into the dry pumping system. If air is not compatible with the user's
process then nitrogen or another inert gas may be used. It is the responsibility of the
user to assess whether the DP clean purge gas is compatible with the process.
WARNING:
We recommend the use of water and diluted Loctite® 7840 or Loctite® Natural Blue®
when performing a solvent flush procedure. It is the responsibility of the user to
assess whether the Loctite® 7840/Natural Blue® is compatible with the application.
For more information refer to the Loctite® MSDS and technical datasheet. The
manufacturer states that the Loctite® 7840 and Loctite® Natural Blue® are not
recommended for use in pure oxygen and/or oxygen rich systems and should not be
selected as a sealant for chlorine or other strong oxidizing materials.
For queries about the solvent compatibility, contact our applications specialists.
WARNING:
Hot steam and liquid will exit the pump during the solvent flush procedure. Ensure
that the exhaust is piped away safely and solvents are disposed of in accordance with
the local and national safety and environmental requirements.
CAUTION:
If an inert gas is used in place of atmospheric air for the DP clean purge gas, ensure it
is regulated to atmospheric pressure otherwise the DP clean process may not work
properly and may cause damage to the pump.
The high flow purge and solvent flush procedures are performed by a single assembly
which is supplied as an option fitted in the factory. The actuating valve is operated
pneumatically. Ensure that the pneumatic gas supply meets the specification given in
clean high flow purge/solvent flush option
Use a 3/8 inch compression fitting (not supplied) to connect the pneumatic supply to the
dry pumping system. For the pump and booster combinations, the pneumatic inlet
connection is on the rear pump panel (refer to
rear of the pump (system with rear exhaust and castors/levelling feet fitted)
the pump‑only systems, refer to
item 4.
M58800880_H - Installation
on page 27.
Figure: DP clean assembly for the pump only
Page 51
Figure: The controls/connectors on the
DP
item 10). For
systems,