Agilent Technologies 1220 Infinity II LC User Manual

254 1220 Infinity II LC System User Manual
11 Maintenance and Repair
Solvent Delivery System
Exchanging the Purge Valve Frit or the Purge Valve
1 Using a 1/4 inch wrench, disconnect the pump outlet capillary at the purge
valve.
2 Using the 14 mm wrench, unscrew the purge valve and remove it.
3 Remove the seal cap from 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
2
0 with purge valve opened)
Purge valve: if internally leaking
Tools required Description
Wrench, 1/4 inch
Wrench, 14 mm
Pair of tweezers
OR Toothpick
Parts required # p/n Description
1 01018-22707 PTFE frits (pack of 5)
1 G4280-60061 Purge valve
Preparations Switch off pump at the main power switch
Remove the upper front cover
NOTE
Beware of leaking solvents due to hydrostatic pressure.

Agilent Technologies 1220 Infinity II LC Specifications

General

Brand	Agilent Technologies
Model	1220 Infinity II LC
Category	Laboratory Equipment
Language	English