Agilent 1290 Infinity II Flexible Pump User Manual 105
Maintenance
7
Pump Head Procedures
Damaged pump head
Disassembling or reassembling the pump head with tools other than the ones
recommended can damage pump heads and significantly reduce their life time.
➔ Follow all instructions step by step.
➔ Use recommended tools like the pump head alignment tool and a torque wrench.
Damage of pump piston
The pump piston is made of ZrO
2
-based ceramic, which is a very hard and resistant
material, but it is sensitive to shearing forces from the side.
➔ Do not try to remove the pump piston from the rear.
➔ Do not use the piston for removing pump seals.
Procedure is valid for primary and secondary pump head.
You may assemble pump head parts only correctly. If parts are in wrong orientation, the
screws do not fit in.
Seals:
Always orientate the seals with the spring side towards the part.
Store seals in isopropanol and fit seals in wet.
Always ultrasonicate seals in solvent, to clean seals properly.
Obey the following order, to clean seals properly:
1 H
2
O (tab)
2 H
2
O (dest)
3 H
2
O/Isopropanol 50%/50%
4 Isopropanol 100%
If the pump head has been initialized without pump, this may have damaged the pump
drive. In this case, please contact your local Agilent service organisation.
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