Bio-Rad ChromLab™ Software - Manual (Page 167)

System and Sample Pumps
Instrument Guide | 165
To install the pump head check valve assemblies
1. To determine the inlet and outlet pump head housing ports, place the two pump
head housings side by side with the flat sides touching.
2. Insert an IN check valve assembly into the bottom port of each pump head
housing and hand tighten firmly.
3. Turn the pump head upside down so that the IN check valve is on top.