Exchanging The Purge Valve Frit Or The Purge Valve - Agilent Technologies 1220 Infinity II LC User Manual

11
Maintenance and Repair
Solvent Delivery System

Exchanging the Purge Valve Frit or the Purge Valve

When Frit: when plunger seals are exchanged or when contaminated or blocked (pressure drop of
> 10 bar across the frit at a flow rate of 5 mL/min of H
Purge valve: if internally leaking
Tools required Description
Wrench, 1/4 inch
Wrench, 14 mm
Pair of tweezers
OR Toothpick
Parts required #
1
1
Preparations Switch off pump at the main power switch
Remove the upper front cover
1 Using a 1/4 inch wrench, disconnect the pump outlet capillary at the purge
Beware of leaking solvents due to hydrostatic pressure.
N O T E
2 Using the 14 mm wrench, unscrew the purge valve and remove it.
3 Remove the seal cap from the purge valve.
254
p/n
01018-22707
G4280-60061
valve.
Description
PTFE frits (pack of 5)
Purge valve
0 with purge valve opened)
2
1220 Infinity II LC System User Manual