8Maintenance
Install the Pump Head Assembly (G7131C)
1260 Infinity II Flexible Pump User Manual 208
Install the Pump Head Assembly (G7131C)
Tools required p/n Description
G7120-68708 HPLC System Tool Kit-Infinity-II
5067-5688 Torque wrench 1 – 25 Nm with 14 mm wrench
G4220-20013 4 mm hex bit
G4220-20015 Adapter ¼ in square to hex
1 Bring the pump drive to the maintenance position using
the Lab Advisor user interface: Go to Service &
Diagnostics > Remove/Install Pump Head and follow
instructions given on the screen. Both pump drives
must be retracted.
Damage to the pump head
Using a wrong torque will damage the pump head.
 For handling the torque wrench, setting and applying
the right torque, consult the manual of your torque
wrench.
2 Install the new pump head assembly by tightening the
screws step by step. Apply 5 Nm using a torque hex key,
which is included to the 1290 Infinity Service Kit p/n
5067-4699.
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