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2

Beacon II Board layout ........................................................................................................ 3

Installation Tips ................................................................................................................... 4

Brazing
Power Supply
Wiring

.............................................................................................................................. 5

Multiple Evaporator Configuration ....................................................................................... 6

Box Temperature control setting
Leak Testing
Refrigerant Charging ........................................................................................................... 7

Start Up Operation ......................................................................................................... 8-11

Operating Mode Display .................................................................................................... 11

Programming and reviewing settings and changes ....................................................... 12-13

Program review button
Select button
Enter button

Monitoring Items ............................................................................................................... 14

Monitor button
Force Defrost button
Force Service button
Reset Time button
Clear/Test button

Locking Beacon II board .................................................................................................... 15

Status Indicator LED .................................................................................................... 15-16

Low Ambient Operation ..................................................................................................... 16

Pumpdown ................................................................................................................... 16-17

Defrost ....................................................................................................................... 17-18

Alarms ............................................................................................................................ 18

Error Indicator
Evaporator fans shutdown by operators ............................................................................ 19

Checking Operation of Expansion valve ....................................................................... 20-21

Power Failures
Service Mode
Spare Sensor Terminals
Checking sensors ............................................................................................................. 21

Sensor resistance/temperature table
System Defaults ................................................................................................................ 22

Parts List
Operational limits .............................................................................................................. 23

Expansion Valve Capacity
Diagnostics .................................................................................................................. 24-27

Wiring diagrams ........................................................................................................... 28-33

Preventive Maintenance .................................................................................................... 34

Service Record ............................................................................................................ 35-36

Index