Variable Geometry Diffuser Calibration Screen; Figure 24 - Variable Geometry Diffuser Calibration Screen - York YK Style H Operation Manual

FORM 160.76-O2
issue date: 6/15/2015

VARIABLE GEOMETRY DIFFUSER CALIBRATION SCREEN

FIGURE 24 - VARIABLE GEOMETRY DIFFUSER CALIBRATION SCREEN

OVERVIEW
This screen displays a cutaway view of the chiller com-
pressor, revealing the Variable Geometry Diffuser and
provides the capability of calibrating the VGD.
Requires a login access level of SERVICE.
Service Technicians refer to the OptiView
Control Center - Service Instructions
(Form 160.76-M1) for operation instruc-
tions and explanation of all programmable
setpoints and displayed values.
DISPLAY ONLY
VGD Opening (LED)
Indicates the VGD is opening.
VGD Closing (LED)
Indicates the VGD is closing.
VGD Calibrated (LED)
Indicates the VGD is calibrated.
VGD Actuator Mode
Indicates the VGD is in Manual mode whenever the
Open, Close or Hold keys are pressed. Indicates Auto
when the Auto key is pressed putting the control in to
the automatic mode.
JOHNSON CONTROLS
SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION
100% VGD Voltage
Displays the feedback voltage calibration at the 100%
position.
0% VGD Voltage
Displays the feedback voltage calibration at the 0%
position.
VGD Feedback Voltage
Displays the current VGD position potentiometer feed-
back voltage.
PROGRAMMABLE
[VGD] Open (Manual)
This key puts the VGD in manual mode and sends an
OPEN command to the VGD.
[VGD] Close (Manual)
This key puts the VGD in manual mode and sends a
CLOSE command to the VGD.
[VGD] Hold (Manual)
This key puts the VGD in manual mode and sends a
HOLD command to the VGD.
[VGD] Auto
This key puts the VGD into automatic control mode.
LD19457
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