JOHNSON CONTROLS
56
FORM 160.54-O1
OptiView Control Center
FIG. 12B
VARIABLE GEOMETRY DIFFUSER SETPOINTS SCREEN
LD10705
OVERVIEW
(This feature applies to Software version
C.MLM.01.10.xxx (and later) or C.OPT.01.10.302
(and later))
The Variable Geometry Diffuser setpoints are maintained
on this screen. All setpoints require a login access level
of Service. Service Technicians refer to YORK Service
Manual 160.54-M1 for operation and explanation of all
setpoints and displayed values.
DISPLAY ONLY
Stall Detector Voltage
Displays the Stall Detector output voltage, as received
by the Microboard.
Pre-rotation Vanes Position
Displays the position of the Pre-rotation vanes over the
range of 0% (fully closed) to 100% (fully open). Dis-
played as XXX until calibration procedure is performed
by Service Technician.
VGD Limit Switch
(Software version C.MLM.01.14.xxx (and later) or
C.OPT.01.14.306 (and later))
Displays the status of the VGD Limit Switch. Displayed
as “Closed” when the switch is closed. This would be
when the VGD is in the fully closed position. Otherwise,
displayed as “Open”
Diffuser Gap Close (LED)
Illuminates when a close signal is being applied to the
VGD.
Diffuser Gap Open (LED)
Illuminates when an open signal is being applied to the
VGD.
Surge Detected (LED)
Illuminates for 5 seconds each time a surge is de-
tected.
VGD Count
Displays the number of times the Stall Detector Board
output voltage goes above the High Limit setpoint. The
count can be reset with an ADMIN access level using the
VGD Cycle Count key on the VGD Setpoints Screen.
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