Agilent Technologies Infinity II 1290

114 Agilent 1290 Infinity II Flexible Pump User Manual
7 Maintenance
Pump Head Procedures
Disassemble the Secondary Pump Head
CAUTION
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.
1 For disassembling the pump head, remove the 4 hex
screws at the rear of the pump head.
2 Remove the front part of the pump head including pump
chamber housing, distance sheet, pump seal and seal
holder, and support ring with wash seal and gasket.
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