Agilent Technologies 1290 infinity - Assembling the Pump Head

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3 Pump Head Maintenance (Quaternary and Flexible Pumps)
Assembling the Pump Head
Assembling the Pump Head
For a detailed overview of the used parts refer to page “Primary Pump Head with Seal
Wash (Quaternary Pump)” on page 58 and “Secondary Pump Head With Seal Wash
(Quaternary Pump)” on page 68.
When Before installing the pump head.
Tools required p/n Description
Pump head alignment tool
G4220-20012 Torque wrench 2 – 25 Nm
G4220-20013 4 mm hex bit
G4220-20041 Bit Torx 10x25 mm
G4220-20015 Adapter ¼ in square to hex
01018-23702 Insert tool
Parts required p/n Description
G4204-68741 1290 Quaternary Pump PM kit includes seal cap assemblies, PE piston seals
and filter frits
CAUTION
Damage of the pump piston
The pump piston is very sensitive to shearing forces from the side.
➔ Use the alignment piston of the pump head alignment tool for the alignment
procedure described below.
CAUTION
Wrong orientation of pins on support ring
Assembling the pump head without paying attention to the correct orientation of the
pins on the support ring can lead to leaks or damage of the piston and pump head.
➔ Observe pins on the support ring, which help assembling the parts of the pump
head in the correct orientation.