Replacing The Outlet Valve - Agilent Technologies 1290 User Manual

Replacing the Outlet Valve

When If Outlet valve is defective.
Tools required p/n
8710-0510
8710-2603
G4220-20012
G4220-20041
Parts required p/n
G4220-60028
G4220-20020
Preparations • Switch off pump at the main power switch
• Remove the front cover
• Use an optional solvent shutoff valve or lift up solvent filters inside solvent bottles for avoiding
1
Open the 2.5 mm hex screw at the top of the primary
pump head, which fixes the connection capillary of the
heat exchanger. Then lift up the capillary and remove it
from the primary pump head.
1290 Infinity Quaternary Pump User Manual
Description
Wrench open 1/4 — 5/16 inch
Spanner-double open ended 12X14 mm Chrome
Torque wrench 2 – 25 Nm
Bit Torx 10x25 mm
Description
Outlet valve
(primary pump head)
Internal gold seal for Outlet Valve
leakages

Replacing the Outlet Valve

2
A gold seal between outlet valve and heat exchanger
capillary is used for a tight connection. The seal can be
replaced separately as needed.
Hex screw
Gold seal
Heat exchanger
9
Maintenance
137