More Options - Beckman Coulter Optima XL Series Instruction Manual

Run Preparation
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PRECOOLING AND PREHEATING THE ROTOR
2-16
when the system is off.) When the run begins, the rotor will not accelerate
past 3000 rpm until the chamber pressure drops below 750 microns. At that
time, the rotor accelerates to set speed.
The vacuum system is activated automatically when you select
✹✻✮✱✮✪✽❛
as well as when you press
evacuate the chamber before the run, however, make sure the chamber door is
✿✪✬✾✾✶❛
closed, then press
vacuum system in the zonal operating mode.)
The chamber door can be opened only when the vacuum has been completely
vented and the rotor is at rest (except during zonal operation).
If a vacuum-related malfunction occurs, a diagnostic message appears and the
instrument shuts down. Follow the instructions on the screen and see the
Troubleshooting Chart in Section 9.
✹✻✲✷✽✮✻❛
Press the hardkey to access the PRINTER menu window, which
appears on the right side of the screen. Select the required function from the
menu as prompted. See Section 5 for information on each of the printer
functions.
✶✸✻✮❈✸✹✽✲✸✷✼❛
Press the
new softkeys provide access to the Calculations (Section 6) and ESP™
Efficient Sedimentation Program (Section 7) options.
The Optima XL provides a convenient means of precooling or preheating the
rotor in the chamber in a partial vacuum; also, the radiometer senses the rotor
temperature and continually adjusts the chamber temperature to expedite
reaching the set temperature.
✹✻✮✬✸✸✵❛
When you press
automatically. The temperature setting is automatically set at 4°C or 37°C;
these settings can be changed. To end precooling or preheating the rotor, press
✿✪✬✾✾✶❛
to vent the chamber.
✮✷✽✮✻❛
and
. (See Section 8 for instructions on activating the
softkey to access additional system features. The
✹✻✮✱✮✪✽❛
or , the vacuum system is activated
¤✹✻✮✬✸✸✵❛
✼✽✪✻✽❛
to begin a run. To
or