Variable Geometry Diffuser (Vgd) Calibration Screen; Figure 15 - Variable Geometry Diffuser 1 Calibration Screen - York OPTIVIEW YD Series Manual

Control center centrifugal liquid chillers
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FORM 160.79-O3
ISSUE DATE: 11/09/2018

VARIABLE GEOMETRY DIFFUSER (VGD) CALIBRATION SCREEN

FIGURE 15 - VARIABLE GEOMETRY DIFFUSER 1 CALIBRATION SCREEN

This screen allows calibration of the compressor
Variable Geometry Diffuser position potentiometer.
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
VGD Opening (LED)
Illuminates when an open signal is being applied to the
VGD.
VGD Closing (LED)
Illuminates when a close signal is being applied to the
VGD.
VGD Feedback Voltage
Displays the VGD position potentiometer feedback
voltage.
Calibration In Progress (LED)
Illuminates when a calibration sequence is in progress.
JOHNSON CONTROLS
SECTION 2 – OPTIVIEW CONTROL CENTER
Calibration Messages
These are text messages which step the user through
the calibration process and indicate its success or
failure.
PROGRAMMABLE
Start Calibration
Initiates the calibration start.
Cancel Calibration
This button is displayed during the VGD calibration
process. It allows the user to cancels a calibration se-
quence that is in progress.
NAVIGATION
Home
Access Level Required: SERVICE
Causes an instant return to the Home Screen.
VGD 1 or 2
Access Level Required: SERVICE
Moves to the VGD 1 subscreen that allows viewing of
the associated VGD parameters.
2
LD27854
55

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