FORM 160.77-O2
ISSUE DATE: 11/15/2011
JOHNSON CONTROLS
50
SECTION 3 - YKEP CONTROL PANEL OPERATION
Active (LED)
Illuminates when the Primary Compressor is perform-
ing a calibration procedure.
Secondary Potentiometer
Displays the primary compressor Pre-rotational Vanes
poteniometer position (provided by ZE-100B).
Primary PRV Position
Displays the Primary Compressors Pre-rotational vanes
open position percentage (provided by ZE-100B).
PRV Motor Opening (LED)
Illuminates when the Pre-rotational Vanes are in the
process of opening (provided by TCV-100B).
PRV Motor Closing (LED)
Illuminates when the Pre-rotational Vanes are in the
process of closing (provided by TCV-100B).
Active (LED)
Illuminates when the Primary Compressor is perform-
ing a calibration procedure.
OVERVIEW
This screen displays a cutaway view of the chillers
Primary and Economizer compressors, revealing the
pre-rotation vanes and provides the capability of cali-
brating the pre-rotation vanes for either Variable Speed
Drive or Hot Gas Bypass applications.
DISPLAY ONLY
Primary Potentiometer
Displays the primary compressor Pre-rotational Vanes
poteniometer position, which is provided by ZE-100A.
Primary PRV Position
Displays the Primary Compressors Pre-rotational vanes
open position percentage(provided by ZE-100A).
PRV Motor Opening (LED)
Illuminates when the Pre-rotational Vanes are in the
process of opening (provided by TCV-100A).
PRV Motor Closing (LED)
Illuminates when the Pre-rotational Vanes are in the
process of closing (provided by TCV-100A).
PRV CALIBRATION SCREEN
LD15417
FIGURE 27 - PRV CALIBRATION SCREEN
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