Agilent Technologies 1290 infinity - Disassembling the Pump Head; G4204 A

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3 Pump Head Maintenance (Quaternary and Flexible Pumps)
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 tubing connections to the MCGV.
CAUTION
Damage of the pump piston
Removing pump heads in a position other than the maintenance position can damage
the pump piston.
➔ Before switching off the pump, bring it to the maintenance position.
CAUTION
Damage of pump drives
The pump drive can be damaged if the pump initializes after switching it on without
having the pump head installed properly.
➔ Use the Lab Advisor maintenance procedure for replacing pump heads.
➔ Install the pump head correctly before switching on the pump.
NOTE
This procedure shows how to remove the pump head assembly from an Infinity I
Quaternary Pump module (G4204A).
Removing the pump head assembly from an Infinity II Flexible Pump module (G7104A) will
be done in the same way.
NOTE
The primary pump head does not have a heat exchanger. Seal wash parts are optional
(G4204A only).