130 1260 Infinity QuatPump VL User Manual
9 Maintenance
Seal Wear-in Procedure
Seal Wear-in Procedure
1 Place a bottle with 100 mL of isopropanol in the solvent cabinet and put a
tubing (including bottle head assembly) into the bottle.
2 If an active inlet valve is installed, screw the PEEK adapter 1/4-28 to 10-32
(p/n 0100-1847) to the AIV and connect the inlet tube from the bottle head
directly to it.
3 Connect the Restriction capillary (p/n 5022-2159) to the purge valve.
Connect its other end to 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. Pump 15 min at this pressure to wear in the seals. The
pressure can be monitored using your instrument control software or tool.
6 Turn OFF the pump, slowly open the purge valve to release the pressure
from the system, disconnect the restriction capillary and reinstall the bottle
with the solvent for your application.
7 Rinse your system with the solvent used for your next application.
8 Replace the purge valve frit, see “Exchanging the Purge Valve Frit” on
page 117.
Parts required p/n Description
0100-1847 Adapter AIV to solvent inlet tubes
5022-2159 Restriction capillary
Seal damage
This procedure is required for black PTFE seals (standard applications, p/n 5063-6589),
but it will damage the yellow PE seals (normal phase applications, p/n 0905-1420).
➔ Do not run the seal wear-in procedure if PE seals are installed in the pumphead.
Before replacing your solvent by isopropanol or replacing isopropanol by your solvent,
consider solvent miscibility. For example, do not directly switch from buffers to isopropanol
and vice versa.
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