- Heatcraft Refrigeration H-IM-79B refrigerator User Guide

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