Exchanging The Purge Valve Frit Or The Purge Valve; Purge Valve - Agilent Technologies 1200 Series Reference Manual

4 Repairing the Pump

Exchanging the Purge Valve Frit or the Purge Valve

When required
Tools required
Parts required
Preparations for this
procedure
1 Using a 1/4 inch wrench disconnect the pump outlet capillary at the purge
2 Disconnect the waste tube. Beware of leaking solvents due to hydrostatic
3 Using the 14 mm wrench unscrew the purge valve and remove it.
4 Remove the plastic cap with the gold seal from the purge valve.
5 Using a pair of tweezers or a toothpick remove the frit.
Valve body
PTFE frit
Gold seal
Plastic cap
Figure 17
106
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 opened)
Purge valve – if internally leaking
Wrench 1/4 inch
Wrench 14 mm
Pair of tweezers or toothpick
PTFE frit (pack of 5) 01018-22707
Purge valve G1311-60009
Switch off quaternary pump at the main power switch
Remove the front cover
valve.
pressure.
Purge Valve Parts
1200 Series QP Reference Manual
0 with
2