158 1290 Infinity Quaternary Pump User Manual
9 Maintenance
Disassembling the Pump Head
Disassembling the Pump Head
When If parts inside the pump head need to be replaced
Tools required p/n Description
G4220-20012 Torque wrench 2 – 25 Nm
G4220-20013 4 mm hex bit
G4220-20014 2.5 mm Hex Bit
G4220-20015 Adapter ¼ in square to hex
8710-0510 Wrench open 1/4 — 5/16 inch
Preparations Remove the pump head assembly as described in “Replacing the Pump Head” on page 152
Damaged pump head
Disassembling or reassembling the pump head with tools other than the ones
recommended can damage pump heads and significantly reduce their life time.
➔ Follow all instructions step by step.
➔ Use recommended tools like the pump head alignment tool and a torque wrench.
This section describes the maintenance of the 1290 Infinity Quaternary Pump head. Agilent
recommends using refurbished pump heads for maintenance and repair instead of
disassembling pump heads. Such pump heads are available through Agilent service.
The 1290 Infinity pump service kit (5067-4699) includes all tools required for the procedures
described in subsequent sections.
The primary pump head does not have a heat exchanger. Seal wash parts are optional for
both pump heads.
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