Table of Contents
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SECTION 1 - INTRODUCTION......................................................................................................... 8
SECTION 2 - SYSTEM ARCHITECTURE....................................................................................... 10
SECTION 3 - MICROBOARD.......................................................................................................... 19
SECTION 4 - I/O BOARD................................................................................................................ 37
SECTION 5 - LIQUID CRYSTAL DISPLAY ..................................................................................... 45
SECTION 6 - DISPLAY INTERFACE BOARD ................................................................................ 54
SECTION 7 - DISPLAY BACKLIGHT INVERTER BOARD ............................................................. 56
SECTION 8 - KEYPAD .................................................................................................................... 59
SECTION 9 - POWER SUPPLY...................................................................................................... 62
SECTION 10 - CURRENT MODULE (CM-2) .................................................................................. 64
SECTION 11 - SOLID STATE STARTERS...................................................................................... 68
SECTION 12 - ADAPTIVE CAPACITY CONTROL BOARD............................................................ 75
SECTION 13 - PROXIMITY PROBE ............................................................................................... 84
SECTION 13A - HIGH SPEED THRUST BEARING LIMIT SWITCH.............................................. 89
SECTION 14 - REFRIGERANT LEVEL CONTROL ........................................................................ 91
SECTION 15 - OIL PUMP VARIABLE SPEED DRIVE.................................................................... 95
SECTION 16 - MICROGATEWAY ................................................................................................... 99
SECTION 17 - PRESSURE TRANSDUCERS .............................................................................. 100
SECTION 18 - TEMPERATURE THERMISTORS ........................................................................ 102
SECTION 19 - REMOTE SETPOINTS.......................................................................................... 120
SECTION 20 - HOT GAS BYPASS ............................................................................................... 125
SECTION 21 - SMART FREEZE PROTECTION .......................................................................... 129
SECTION 22 - SURGE PROTECTION ...................................................................................... 131
SECTION 23 - SYSTEM CALIBRATION....................................................................................... 133
Electro-Mechanical Starter Applications .................................................................................... 133
Solid State Starter Applications ................................................................................................. 134
Mod "B" Serial Data Interface Liquid Cooled Solid State Starter............................................... 134
Mod "A" Multiplexed Data Interface Liquid Cooled Solid State Starter...................................... 135
Compressor Motor Variable Speed Drive .................................................................................. 136
Pre-Rotation Vanes Position Potentiometer: ............................................................................. 137
Proximity Probe ......................................................................................................................... 138
Safety Shutdown Reset/Inspection Procedure: ........................................................................ 139
High Speed Thrust Bearing Limit Switch ................................................................................... 140
Refrigerant Level Control .......................................................................................................... 140
Oil Pump Variable Speed Drive ................................................................................................. 142
Standby Lubrication................................................................................................................... 142
High Condenser Pressure Warning Threshold .......................................................................... 143
Brine Low Evaporator Pressure Cutout ..................................................................................... 143
Leaving Chilled Liquid Temperature Control Sensitivity ............................................................ 143
Drop Leg Refrigerant Temperature............................................................................................ 144
Smart Freeze Protection ........................................................................................................... 144
Evaporator Refrigerant Temperature ......................................................................................... 144
Hot Gas Bypass Control ............................................................................................................ 144
Chiller Starts and Operating Hours Reset ................................................................................. 145
Service Phone Numbers ........................................................................................................... 146
Surge Protection........................................................................................................................ 146
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TABLE OF CONTENTS
FORM 160.54-M1(503)
YORK INTERNATIONAL
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