Chapter 6: Shutdown and Maintenance 201
Flow Cell Preventive Cleaning
It is good practice to perform flow cell preventive cleaning once per month, or
more often if required, to maintain flow cell cleanliness. Do this at the end of the
day when the system will not be used again until the next day.
1 Turn off the stream.
2 Remove the nozzle and install the closed-loop nozzle. See Figure 6-1 on
page 191.
Verify that there is an O-ring in the closed-loop nozzle before installing it.
3 Select Cytometer > Cleaning Modes > Clean Flow Cell.
4 When prompted, install a tube containing approximately 3 mL of 100%
Contrad 70 cleaning solution, then click OK.
The cytometer loads the tube and fills the flow cell with the cleaning
solution.
5 Click OK when the completion dialog appears.
6 To shut the system down for the day:
a Turn off the cytometer main power.
b Exit BD FACSDiva software and shut down the computer.
c Let the cleaning solution remain in the flow cell overnight.
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