Agilent Technologies 1290 infinity - Disassembling the Secondary Pump Head

32
2 Pump Head Maintenance (Binary and High Speed Pumps)
Secondary Pump Head
Disassembling the Secondary Pump Head
Tools required p/n Description
8710-0510 Wrench open 1/4 — 5/16 inch
G4220-20012 Torque wrench 2 – 25 Nm
G4220-20013 4 mm hex bit
01018-23702 Insert tool
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 Remove the filter assembly at the top of the pump head. 2 For disassembling the pump head, remove the 4 hex
screws at the rear of the pump head.