8
Remove Pump Heads (Quaternary and Flexible Pumps) 
Remove the Pump Head Assembly
5
Remove the capillary connection from the outlet adapter on the 
secondary pump head to the pressure sensor.
6
Open the black plastic screw of the inlet valve at the bottom of 
the primary pump head.
7
Turn the inlet valve 90 ° counterclockwise (1) and remove the 
inlet weaver from the inlet valve (2).
8
Loosen the inlet valve. Keep the inlet valve installed to the 
pump head assembly.
9
Counter the lock screw of the heat exchanger capillary while 
loosening the outlet valve. Keep the outlet valve installed to 
the pump head assembly. 
10
Remove the four screws holding the pump heads.
Open the screws step by step, not screw by screw.