Johnson Controls York YKEP Series User Manual

FORM 160.77-O2
ISSUE DATE: 11/15/2011
JOHNSON CONTROLS
54
SECTION 3 - YKEP CONTROL PANEL OPERATION
Stall Noise
Displays the Primary Compressor VGD Stall Noise/
Signal (provided by XE-149A).
Primary Calibration
Pri Potentiometer
Displays the Primary Compressor potentiometer posi-
tion.
Pri VGD Position
Displays the Primary Compressor VGD open (retract-
ed) percentage (provided by VGD Position Potentiom-
eter ZE-149A).
Active (LED)
Illuminates when the Primary Compressor VGD is in
the process of performing a calibration.
PROGRAMMABLE
SP
Access Level Required: OPERATOR
This key allows the user to program the maximum Stall
Noise setpoint.
OVERVIEW
This screen displays a cutaway view of the primary
compressor, revealing the diffuser gap and provides the
capability of calibrating the diffuser gap, for eliminat-
ing compressor stall conditions.
DISPLAY ONLY
VGD Pressure
Displays the primary compressor VGD pressure (pro-
vided by transducer PE-149A).
VGD Motor Opening (LED)
Illuminates when the Primary Compressors VGD is in
the process of opening (retracting) (provided by PCV-
112A).
VGD Motor Closing (LED)
Illuminates when the Primary Compressors VGD is in
the process of closing (extending) (provided by PCV-
112A).
Pri VGD Position
Displays the Primary Compressor VGD position (pro-
vided by VGD Position Potentiometer ZE-149A).
PRIMARY VARIABLE GEOMETRY DIFFUSER SCREEN
LD15547
FIGURE 29 - PRIMARY VARIABLE GEOMETRY DIFFUSER SCREEN

Johnson Controls York YKEP Series Specifications

General

Brand	Johnson Controls
Model	York YKEP Series
Category	Chiller
Language	English