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SECTION 2 – OPTIVIEW CONTROL CENTER
PRE-ROTATION VANES CALIBRATION SCREEN
FIGURE 12 - PRE-ROTATION VANES CALIBRATION SCREEN
This screen displays a cutaway view of the chiller com-
pressor, revealing the pre-rotation vanes and provides
the capability of calibrating the pre-rotation vanes.
The appearance of this screen is the same for compres-
sor #1 and compressor #2.
R e q u i r e s a l o g i n a c c e s s l e v e l o f
SERVICE.
DISPLAY ONLY
PRV Opening (LED)
Illuminates when the vanes are opening.
PRV Closing (LED)
Illuminates when the vanes are closing.
Calibration in Progress (LED)
Indicates the calibration sequence is in progress.
Calibration Messages
These are text messages which step the user through the
calibration process and indicate its success or failure.
48
PRV Feedback Voltage
Displays the Pre-Rotation Vanes position potentiom-
eter feedback voltage.
Vane Motor Switch (LED)
Illuminates when the vane motor switch is closed.
PROGRAMMABLE
Open
Pressing this button sets the PRV control to Manual
and drives the PRV in the open direction.
Close
Pressing this button sets the PRV control to Manual
and drives the PRV in the closed direction.
Hold
Pressing this button stops the PRV at the present
position.
Auto
Pressing this button returns the PRV control to Auto-
matic program control.
FORM 160.79-O3
ISSUE DATE: 11/09/2018
LD27851
JOHNSON CONTROLS
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