140 Agilent 1290 Infinity Binary Pump User Manual
9 Maintenance
Disassembling the Primary Pump Head
Disassembling the Primary 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 outlet valve at the top of the pump head and
the inlet valve at the bottom of the pump head.
2 For disassembling the pump head, remove the 4 hex
screws at the rear of the pump head.
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