Installing And Removing Solvent Shut Off Valves - Thermo Scientific Dionex UltiMate 3000 Series Operating Instructions Manual

UltiMate 3000 Series:
NCS-3500RS and NCP-3200RS

7.8 Installing and Removing Solvent Shut Off Valves

Solvent shut off valves enable opening and closing the solvent flow path to the pump
heads, for example, to prevent solvent from flowing through the system when you open a
flow connection on the low-pressure side.
Tip: Recommended for ProFlow flow meter:
Use the solvent shut off valves in the solvent lines. For solvent calibration, the
solvent shut off valves need to be installed in the solvent flow path.
Installing Solvent Shut Off Valves
Parts required
• Shut off valve
• Solvent line
• Elbow tubing (shipped with the solvent line)
Follow these steps
1. Stop the pump flow and wait until the pressure is down to zero.
2. Unscrew the cap of the solvent reservoir and remove the solvent line together with the
cap from the reservoir.
3. Purge the pump until the solvent line is empty.
4. Proceed as required
♦ If the solvent line is to be replaced
a) Disconnect the solvent line from the reservoir cap.
b) Connect the new solvent line to the solvent reservoir. See section 4.3.2.1,
page 63.
♦ If the solvent line remains connected to the solvent reservoir
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.
5. Connect the shut off valve to the free, flanged end of the solvent line and to one end of
the elbow tubing.
Page 206 Operating Instructions