Bio-Rad ChromLab™ Software - Manual (Page 184)

A | Maintaining the Instrument
182 | NGC Chromatography Systems and ChromLab Software
2. Using a pair of tweezers, remove the check valve capsule from inside the port.
3. Locate a new check valve capsule for the priming manifold check valve.
4. Carefully observe the capsule. The arrow on the side of the capsule indicates
the flow direction. Ensure that you insert the capsule with the arrow pointing in
the direction of flow (upward).