Program Keys - Beckman Coulter Allegra X-5 Instructions For Use Manual

Description
Controls and Indicators
START
STOP
OPEN DOOR
PULSE

Program Keys

The program keys are used to set run parameters (a program consists of all of the parameters for a
run). Except for the cursor and
displays, which show the parameters as they are input. Each key (except for the cursor keys) has an
LED in the upper left corner that lights to indicate operational readiness. The LEDs also blink if an
incorrect parameter is entered.
Cursor Keys
ENTER
RPM
RCF
ROTOR
1-6
Pressing the START key causes the centrifuge run to begin. This key can also be used to
abort a deceleration process and restart the centrifuge.
The STOP key can be pressed to end a run. It operates in two modes, depending on how
you press it:
• Normal stop (press and release):
The centrifuge decelerates to a complete stop according to the preselected
deceleration rate. Deceleration can be terminated and the centrifuge restarted by
pressing START again. The centrifuge emits a series of audible tones when the rotor
reaches 0 RPM. (Instructions for disabling the tones are in
• Fast stop (press and hold for at least two seconds):
The centrifuge decelerates to a complete stop at the maximum rate. The
deceleration cannot be interrupted; the centrifuge can only be restarted after the
rotor stops and the door is opened and closed.
Pressing the OPEN DOOR key unlatches the centrifuge door locks and allows the door
to be opened. The centrifuge accepts this command only when the rotor is completely
stopped and the OPEN DOOR key LED is lit.
Pressing the PULSE key causes the installed rotor to accelerate at the maximum rate up
to the set speed for short-duration runs (as long as the key is pressed). Deceleration, at
the maximum rate, begins when the key is released.
ENTER keys, program keys are located beneath the applicable digital
The cursor keys are up and down arrow keys, which can be pressed to increment values
up or down when setting parameters.
Parameter (speed, time, temperature, and acceleration or deceleration profile)
changes made while a run is in progress must be verified by pressing the ENTER key.
When the RPM key is pressed the last digit in the RPM/RCF/ROTOR display (0) flashes,
indicating that the speed can be entered in increments of 100 revolutions per minute
(RPM). After the run starts, the actual RPM of the rotor is displayed.
The RCF key can be used to select the speed setting by required relative centrifugal
field (RCF). The corresponding RPM is automatically calculated and displayed during
the run. If the RCF key is pressed during the run, the RCF value is shown in the
RPM/RCF/ROTOR display.
Pressing the Rotor key displays the rotor number.
Operation.)
CHAPTER 2,
PN B29071AE