Agilent 1290 Infinity Binary Pump User Manual 143
Maintenance
9
Disassembling the Secondary Pump Head
Disassembling the Secondary Pump Head
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 Remove the filter assembly at the top of the pump head.
See “Replacing Parts of the High Pressure Filter
Assembly” on page 157 for replacing the filter frit.
2 For disassembling the pump head, remove the 4 hex
screws at the rear of the pump head.
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