Beckman Coulter Multisizer 4, User Manual

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PN A51387A
B
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Analyzer Overview
Sample Compartment
NOTE
The Multisizer 4 software automatically determines stirrer position for sample runs based on
Standard Operating Method (SOM) settings. To change the stirrer position, or park the stirrer
outside the beaker, select the appropriate checkboxes in the
Edit the SOM > Stirrer
tab. For
information on the Edit the SOM (Standard Operating Method) window, see Standard Operating
Method: Stirrer Settings
, page 4-10 . It is possible to manually reposition the stirrer if you are not
using Multisizer 4 ST Beakers and Accuvette® STs.
Particle Trap
The Particle Trap is located at the far right of the Sample Compartment ( Figure 1.4 , G ).
The Particle Trap is designed to keep large particles from entering the system, where they could
block the system or abrade valves. Electrolyte and sample fluid from the aperture enter the Particle
Trap, where large particles drift to the bottom.
NOTE
Beckman Coulter recommends that you clean the Particle Trap when particles have settled and
filled one-quarter of the Trap. If you allow particles to collect above the one-quarter mark, large
particles may recirculate and damage the system.
Status and Illumination Lights
There are two LED status lights located at the right of the Sample Compartment, next to the Particle
Trap (
Figure 1.4 , H ).
• The green (Analyzing) light is on when the Analyzer is running an analysis.
• The amber (Attention) light flashes when the Analyzer cannot start a run (for example, because
the door is open or the sample platform is not in place). When the amber light flashes, the
Multisizer 4 software displays an error message.
There are two lights that illuminate the Sample Compartment:
• The light on the right side of the Sample Compartment, next to the Particle Trap, illuminates
the Sample Compartment when the door is open. When you close the door, the light turns off
after a 10-second delay.
• The light on the left side of the Sample Compartment illuminates the aperture tube. This light
is on when the Sample Compartment door is open; when a sample run is in progress; and when
the system is filling, flushing, or draining.