Beckman Coulter Multisizer 4, User Manual

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PN A51387A
B
9-9
Troubleshooting
Viewing Advanced Multisizer Settings
9
To adjust flow settings:
1. Select
Run > Troubleshooting > Enter Service Mode
on the Main Menu bar.
NOTE
Entering Service Mode will allow you to change default settings in the Troubleshooting menu.
If you do not enter Service Mode, settings in the Troubleshooting menu will appear as read-only
values.
2. Select
Run > Troubleshooting > Sample Delivery Settings
on the Main Menu bar. The Sample
Delivery Settings window opens.
3. In the Metering Pump pane, enter new values in the Minimum Flow and Maximum Flow fields,
and click
(
OK
)
.
The Minimum Flow and Maximum Flow fields display the flow rates in mL/second that will
trigger error messages. The default flow settings adjust for aperture tube size and are
appropriate for most analyses. Under certain conditions—if you are using an unusually viscous
electrolyte solution, for example, or if you have increased the vacuum for a large aperture
tube—it may be necessary to adjust the flow rate to avoid unnecessary error messages.
Fill, Flush, and Drain Settings
Viewing System Flush Time
You can select settings to automatically flush the system before and/or after each analysis run
when you create a Standard Operating Method (see
Standard Operating Method: Run Settings ,
page 4-8 ). Flushing the system regularly is recommended in order to remove particles that settle at
the bottom of the aperture tube.
Standard Operating Method settings do not allow you to adjust the length of time the system will
use for a system flush. This option is available only in the Troubleshooting menu.