Agilent 1290 Infinity Binary Pump User Manual 135
Maintenance
9
Replacing the Pump Heads
When In case of problems with the pump performance.
Tools required p/n Description
G4220-20012 Torque wrench 2 – 25 Nm
G4220-20013 4 mm hex bit
G4220-20015 Adapter ¼ in square to hex
Parts required # p/n Description
1 G4220-60200 Pump Head Assembly Channel A (left) with Seal Wash Option
1 G4220-60210 Pump Head Assembly Channel B (right) with Seal Wash Option
1 G4220-60400 Pump Head Assembly Channel A (left) without Seal Wash Option
1 G4220-60410 Pump Head Assembly Channel B (right) without Seal Wash Option
Preparations • Switch off pump at the main power switch
• Remove the front cover
Limitation of life time
The pump head assembly is an exchange part which cannot be reassembled with
standard tools. Disassembling the pump head will strongly limit its life time.
➔ Do not disassemble the pump head assembly.
Damage of connections
Disassembling the flow connection between the both pump heads of one pump head
assembly (solvent channel) can damage the connection and cause leaks.
➔ Do not disconnect the flow connection between the pump heads.
Damage of internal parts
➔ Do not apply a strong force to the screws of the pump head.
➔ Use a torque hex key for that purpose.
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