Specifications
3
TABLE OF CONTENTS
INTRODUCTION .................................................................................................................. 4
WARNING LABELS AND SAFETY INSTRUCTIONS .......................................................... 5
APPLICATIONS .................................................................................................................... 5
MASTER CONTROLLER LAYOUT ...................................................................................... 6
Description ................................................................................................................. 7
Factory-Mounted Parts ............................................................................................... 8
Features ..................................................................................................................... 9
Sequences of Operation .......................................................................................... 10
START UP
......................................................................................................... 10
OFF MODE
........................................................................................................ 10
COOL MODE
...................................................................................................... 10
DEFROST MODE
................................................................................................. 11
Scheduled Defrost
..................................................................................... 11
Demand Defrost
........................................................................................ 12
Manual Defrost
......................................................................................... 12
COIL DRAIN MODE
.............................................................................................. 12
FAN DELAY MODE
............................................................................................... 12
SAFETY MODE
................................................................................................... 12
Multiple Evaporator Configuration ............................................................................ 13
BOND CONTROLLERS FROM FRONT PANEL
.............................................................. 14
SYCHRONIZE MODE (peer to peer)
........................................................................... 14
ALTERNATING MODE
........................................................................................... 14
Definition of On-Board Symbols ............................................................................... 15
STATUS, DEFAULT AND READING DISPLAY
............................................................... 15
VARIABLES
....................................................................................................... 15
MANUAL MODE
................................................................................................... 15
TYPICAL SETPOINTS PARAMETER
.......................................................................... 16
ALARM DISPLAY
................................................................................................. 17
Setting Parameters by On-Board Pushbuttons ........................................................ 17
Temperature Sensors .............................................................................................. 19
SENSOR
SERVICE INSTRUCTIONS
.......................................................................... 19
Pressure Transducer ............................................................................................... 20
Charging the Master Controller 2.0 Refrigeration System ....................................... 21
Technical Notes ....................................................................................................... 22
REVERSE CYCLE DEFROST ........................................................................................... 23
General Information ................................................................................................. 23
Advantages .............................................................................................................. 23
Factory-Installed Parts ............................................................................................. 23
Eliminated Parts ....................................................................................................... 24
Defrost Time ............................................................................................................ 24
Charging a Master Controller 2.0 System Equipped with Reverse Cycle Defrost ... 24
ELECTRIC WIRING ............................................................................................................ 24
TYPICAL WIRING DIAGRAMS
....................................................................................... 25-27
TROUBLESHOOTING GUIDE ........................................................................................... 28
Troubleshooting Electric Expansion Valve
.............................................................. 29
MASTER-BILT PART NUMBERS ....................................................................................... 29