Bio-Rad ChromLab™ Software User Manual
Page 163

System and Sample Pumps
Instrument Guide
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5.
Locate the wash housing O-ring and the pump head small washer. If you do not
see them on the separated pump head:
The O-ring might be attached to the wash housing.
The small washer might have remained on the pump piston.
6.
Remove and store the O-ring and small washer in a safe place such as a petri
dish or other small container.
Tip:
You can remove the O-ring from its groove with a pair of tweezers if
necessary.
Note:
Do not lose or damage the O-ring or small washer. The pump will
not operate without them.
7.
(Optional) Remove the inlet and outlet check valves on the pump head.
Tip:
It is not necessary to remove the inlet and outlet check valves unless
you plan to clean or replace them. See
8.
(Optional) Replace the pump head seal. For more information, see