Bio-Rad ChromLab™ Software - Manual (Page 174)

A | Maintaining the Instrument
172 | NGC Chromatography Systems and ChromLab Software
6. Rinse the piston and examine it for damage.
7. Store the piston in the same container as the large washer and the wash
housing seal.
To replace the wash housing seal
1. Insert the seal removal end of the large seal tool in the seal cavity on the pump
head.
The seal removal end is long and thin. It has a barbed tip to catch the seal.
2. Pull the seal out of the head.
3. Place the new seal on the other end of the seal tool.
The seal insertion end is shorter than the removal end. The tip is smooth, not
barbed like the removal end.
4. Carefully align the seal with the seal cavity on the pump head.
5. Insert the seal tool in the pump head so that the open side of the seal enters
first and push until the seal is completely seated in its cavity.
6. Remove the seal tool and inspect the pump head to verify that the exposed
wash housing seal surface is lower than the surrounding wash housing.