Thermo Scientific Vanquish VH-P10-A-02, Operating Manual

Page: 109 / 238

6 • Operation
Vanquish Pumps (VH-P10-A-02) Operating Manual Page 109
6.9.3 Installing Solvent Shut Off Valves
When
To shut off the solvent flow through the system at the solvent reservoir,
for example, to prevent solvent from flowing through the system when
you open a flow connection on the low-pressure side
•
To install a shut off valve during initial setup of the flow connections,
see the related steps in
section 5.6.5 Connecting the Solvent Lines,
page 65 .
• To install a shut off valve after initial operation of the pump, follow
the steps further down in this section.
Parts required
Solvent shut off valve, kit containing one shut off valve and fitting
connections
Tools and additional items required
•
Tubing cutter
•
Solvent suitable for purging the pump
Preparations
Turn off the pump flow and wait until the system pressure is down to
zero.
Follow these steps
Follow the steps for each solvent line in which you want to install a shut
off valve.
1. Unscrew the cap of the solvent reservoir and remove the solvent
line together with the cap from the reservoir.
2. Start a purge cycle as appropriate.
3. Stop purging as soon as the solvent line is empty.
4. Retighten the reservoir cap hand-tight. Verify that the retaining
guide remains in the hole in the reservoir cap. If it does not, press
the retaining guide into the hole to ensure that the tubing is kept in
place in the cap.