Install the Pump Head Assembly (G7120A)

Tools required

Qty.	p/n	Description
1	G7120-68708	InfinityLab System Tool kit
1	5067-5688	Torque wrench 1 - 25 Nm with 14 mm wrench
1	G4220-20013	4 mm hex bit
1	G4220-20015	Adapter ¼ in square to hex

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.
CAUTION
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.
Tighten the screws step by step, first fingertight, then with approx. 5 Nm.
Connect the outlet of the secondary pump head to the inlet of the purge valve.

NOTE
Channel A (left pump head assembly) is connected to port 4, channel B (right pump head assembly) to port 1 of the purge valve.
Perform a Pump Leak Rate Test.