Reinstalling The Pump Head Assembly - Agilent Technologies 1220 Infinity II LC User Manual

11
Maintenance and Repair
Solvent Delivery System

Reinstalling the Pump Head Assembly

When When reassembling the pump
Tools required Description
Hexagonal key, 4 mm
1
If needed, apply a small amount of grease on the back of
the screws. Normally, the grease added during
manufacturing is sufficient for a long time.
3
Insert the pump head screws and tighten them stepwise
with increasing torque (approx. 5 Nm) with a 4 mm
hexagonal key.
5
Reconnect the valve capillary to the outlet valve.
7
Reconnect the outlet capillary and the waste tubing.
262
2
Slide the pump head assembly onto the pump drive.
4
Install the capillary at the bottom of the pump head.
6
Reconnect the solvent inlet tube to the passive inlet
valve.
Next Steps:
8
If installed, reconnect the active inlet valve cable to its
connector.
9
If a standard seal has been installed, run the seal
wear-in procedure, which includes a replacement of the
purge valve frit, see "Exchanging the Plungers"
page 263.
10
For the normal phase seal, the purge valve frit should be
replaced, see "Exchanging the Purge Valve Frit or the
Purge Valve" on page 254.
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