PN A51387A
B
9-3
Troubleshooting
Resolving Common Problems
9
Adjusting the Metering Pump
When you change the aperture size or adjust electrolyte viscosity, it is necessary to calibrate the
metering pump for the new tube or fluid. If you use the Change Aperture Tube Wizard (page
this process occurs automatically when you click the Metering Pump button. When the metering
pump requires calibration, the Multisizer 4 software may display the following error message:
Adjust the Metering Pump
If this error message appears, select
Run > Troubleshooting > Adjust Metering Pump
.
The Status Panel displays progress.
If adjusting the metering pump does not resolve the problem, contact Beckman Coulter Field
Service (page
).
Setting the Vacuum Regulator
The Multisizer 4 software resets the Waste Tank vacuum on start-up and at regular intervals. A
Waste Tank vacuum malfunction can result from a mechanical flaw in the Analyzer. When the Waste
Tank vacuum is malfunctioning, the Multisizer 4 software may display the following error message:
Check the Vacuum Regulator
If this error message appears, select
Run > Troubleshooting > Check Vacuum Regulator
.
The Status Panel displays progress.
If resetting the vacuum regulator does not resolve the problem, contact Beckman Coulter Field
Service (page
).
Measuring Gain Stage Offsets
The Analyzer circuits that measure pulse height contain eight gain stages calibrated relative to each
other. By default, calibration of these gain stages occurs automatically:
•
At start-up and/or when a temperature change of 3 degrees C is measured in the Analyzer.
•
Every 60 minutes after start-up or a after change in temperature of 3 degrees C.
•
Every 500 minutes.
To ensure the precision of current and gain, it is possible to manually calibrate gain stage offsets at
any time.
If gain stage offsets do not calibrate automatically and require re-calibration, select
Run >
Troubleshooting > Measure Gain Stage Offsets
.
If calibrating gain stage offsets does not resolve the problem, contact Beckman Coulter Field Service
(page
).
Содержание Multisizer 4
Страница 12: ...xii List of Figures ...
Страница 14: ...xiv List of Tables ...
Страница 22: ...PN A51387AB xxii Introduction Before You Start Warnings and Cautions ...
Страница 42: ...PN A51387AB 1 20 Analyzer Overview Preparing the Analyzer for Sample Runs ...
Страница 90: ...PN A51387AB 3 36 Installing and Calibrating an Aperture Tube Running a Concentration Control Sample ...
Страница 160: ...PN A51387AB 6 16 Analyzing a Sample Using Blank Runs ...
Страница 232: ...PN A51387AB 10 8 Regulatory Compliance Additional Security Features ...