Agilent 1290 Infinity Binary Pump User Manual 139
Maintenance
9
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 Heads”
on page 134, steps 1-4.
This procedure describes replacements for the pump heads of channel A. Replacement for
channel B can be done accordingly. The primary pump head does not have a heat
exchanger. Seal wash parts are optional for both pump heads.
1
Open the 2.5 mm hex screw at the top of the primary
pump head, which fixes the connection capillary of the
heat exchanger. Then lift up the capillary and remove it
from the primary pump head.
2 Remove both pump heads from the link plate by pushing
the clips at the rear of the plate.
Heat exchanger with connection
capillary
Primary pump head
Secondary pump head
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