Bio-Rad ChromLab™ Software - Manual (Page 171)

System and Sample Pumps
Instrument Guide | 169
Removing the Wash Housing
To remove the wash housing
1. Complete the steps in the section Removing the Pump Heads on page 159 .
2. Disconnect inlet and outlet tubing from both the left and right wash housings.
3. Observe the black arrow on the side of each wash housing. The arrows indicate
the direction of wash flow.
 On the left housing, the arrow points upward.
 On the right housing, the arrow points downward.
Tip: Before removing the wash housings, label them Left and Right to
easily identify them when you reassemble the piston wash housing.
Caution: Be careful not to break or damage the piston.
4. Carefully remove the wash housing. Pull it straight out from the piston.
5. (Optional) Remove the left wash housing inlet and outlet check valves.
Tip: It is not necessary to remove the inlet and outlet check valves unless
you plan to replace them. See To replace the wash housing check valves
on page 173 .
6. Store the wash housing in a safe place.