Agilent Technologies 1220 Infinity II LC - Exchanging the Plungers

1220 Infinity II LC System User Manual 263
Maintenance and Repair
11
Solvent Delivery System
Exchanging the Plungers
1 Place a bottle with 100 mL of isopropanol in the solvent cabinet and attach
a bottle-head assembly (including tubing) to the bottle.
2 Connect the inlet tube from the bottle head directly to the inlet valve.
3 Connect one end of the Restriction capillary (5022-2159) to the purge valve.
Insert the other end into a waste container.
4 Open the purge valve and purge the system for 5 min with isopropanol at a
flow rate of 2 mL/min.
5 Close the purge valve and set the flow to a rate adequate to achieve a
pressure of 350 bar.
6 Pump for 15 min at this pressure to wear in the seals.
7 Turn off the pump and slowly open the purge valve to release the pressure
from the system.
8 Disconnect the restriction capillary and reinstall the bottle containing the
solvent for your application.
9 Rinse your system with the solvent used for your application.
CAUTION
This procedure is required for Standard seals (pack of 2) (5063-6589) only.
It will damage the PE seals (pack of 2) (0905-1420).
➔ Never perform the seal wear-in procedure with normal-phase application seals.