Beckman Coulter Multisizer 4, User Manual, Page: 25 / 238

PN A51387A
B
1-3
Analyzer Overview
Overview
1
Power ON/OFF Switch
The ON/OFF switch is located next to the power cable on the rear panel of the instrument.
CAUTION
Make sure that the Analyzer has been powered down for at least 20 seconds
before restarting. This ensures that the power supply has been depleted of
voltage and allows the processor to reset.
NOTE
The Multisizer 4 performs best when it has reached a steady working temperature. This typically
takes 15 minutes from powering on the Analyzer.
Sample Compartment
The Sample Compartment is located at the front of the Analyzer on the right as you face the
instrument (
Figure 1.1 , A ).
The door of the Sample Compartment consists of two layers of glass laminated on either side of a
conductive material. When closed, the conductive material in the door reduces electrical noise
created by electromagnetic fields (EMFs) in the vicinity. For information on other causes of noise in
sample analyses, see
Reducing Noise , page 9-1 .
NOTE
The Multisizer 4 software will display an error message if you attempt to start a sample run while
the door is open.
For information on components inside the Sample Compartment, see Sample Compartment ,
page 1-3 .
Control Panel
The Control Panel is located in the center of the front panel ( Figure 1.1 , B ). For information on
Control Panel buttons, status lights, and the Bar Code Reader, see Control Panel , page 1-5 .
Electrolyte Jar
The Electrolyte Jar is located next to the Control Panel on the front of the Analyzer ( Figure 1.1 , D ).
Electrolyte is used to fill the system, flush particles out of the system, rinse the aperture tube, and
unblock the aperture.
It is preferable that you use the same electrolyte solution in both the Electrolyte Jar and the sample
beaker or Accuvette® ST. When running an analysis, however, the Analyzer draws only sample
beaker electrolyte solution through the aperture orifice.
Electrolyte solution passes through the orifice only during the unblock procedure, when the
Analyzer pushes fluid through the aperture in reverse to remove particles.