JOHNSON CONTROLS
55
SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION
FORM 160.78-O2
ISSUE DATE: 5/22/2017
2
OVERVIEW
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 following fields require a login access
level of SERVICE. Service Technicians
refer to YORK YMC
2
Service Manual
(Form 160.78-M2) for operation instruc-
tions and explanation of all program-
mable setpoints and displayed values.
DISPLAY ONLY
PRV Opening (LED)
Indicates the pre-rotation vanes are opening.
PRV Closing (LED)
Indicates the pre-rotation 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.
PRV Feedback Voltage
Displays the pre-rotation vanes position potentiometer
feedback voltage.
PROGRAMMABLE
Start Calibration
This option is hidden after calibration has started. Ser-
vice Technicians refer to
YORK YMC
2
Service Manual
(Form 160.78-M2)
for an explanation of this setpoint.
Cancel Calibration
This option only becomes available after calibration
has started.
NAVIGATION
Home
Causes an instant return to the Home Screen.
Compressor
Return to the Compressor Screen.
PRE-ROTATION VANES CALIBRATION SCREEN
APPLIES TO GAS PATH REVISION "A" ONLY
LD16117
FIGURE 24 -
PRE-ROTATION VANES CALIBRATION SCREEN
