Centra-GP8/GP8R Operation Manual
7
3 OPERATION
3.1 The Front Panel
FRONT PANEL OF THE CENTRA-GP8R
Run parameters are selected using the touch switches on the
control panel. An audible beep signals when a switch has been
pressed. The arrow keys are used to select the different parameters.
The Digital Display indicates both the actual and set parameters for rotor
speed or g-force, run time, chamber temperature, program number and
rotor number or rotor radius. The display normally operates at full
brightness when indicating actual run conditions. However, the display
dims when indicating set conditions, or while the arrow keys are being
used to change parameters.
The On/Off button turns on the power to the display and to the
refrigeration system (GP8R). The unit must be on to open the lid, or
operate the controls.
Arrow keys are used to view or change the desired settings for
temperature, RPM/RCF, time or rotor/radius. Pressing an arrow once
changes the display momentarily from actual readings to the program
settings. Pressing the arrow twice allows you to re-program the run
parameters. To raise or lower a setting by one increment, press and
release the appropriate arrow key. To adjust in greater increments, hold
the arrow key down and the settings will change slowly at first and then
accelerate. As you approach the proper setting, release the button and
then press it repeatedly to select the exact setting. When a button is
released for three seconds, the display returns to actual readings.
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