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CONTENTS
Important Safety Information ................................................................................................. 6
I. Construction and Water/Refrigeration Circuit Diagram ....................................................... 8
A. Construction .................................................................................................................. 8
1. Air-Cooled Models .................................................................................................... 8
2. Water-Cooled Models ............................................................................................. 9
3. Remote Air-Cooled Models .................................................................................... 10
4. Low-Side, Parallel Rack System Models ................................................................11
B. Icemaking Unit ............................................................................................................ 12
C. Water/Refrigeration Circuit Diagram ............................................................................ 13
1. Air-Cooled Models .................................................................................................. 13
2. Water-Cooled Models ............................................................................................ 14
3. Remote Air-Cooled Models .................................................................................... 15
4. Low-Side, Parallel Rack System Models ............................................................... 16
II. Sequence of Operation and Service Diagnosis ............................................................... 17
A. Sequence of Operation Flow Chart ............................................................................. 17
1. Icemaking and Drain Cycle .................................................................................... 17
2. Shutdown .............................................................................................................. 18
B. Service Diagnosis ....................................................................................................... 19
C. Control Board Check ................................................................................................... 25
D. Bin Control Check ....................................................................................................... 30
E. Float Switch Check and Cleaning ............................................................................... 34
F. Diagnostic Tables ......................................................................................................... 36
III. Controls and Adjustments ............................................................................................... 39
A. Control Board .............................................................................................................. 39
1. Control Board Layout ............................................................................................. 40
2. LED Lights and Audible Alarm Safeties ................................................................. 41
3. Ice Purge Cycle Bypass ......................................................................................... 42
B. Controls and Adjustments ........................................................................................... 42
1. Default Dip Switch Settings .................................................................................... 42
2. BC1 (Infrared Sensor) Shutdown Delay (S1 dip switch 1, 2, 3) ............................. 43
3. Drain Frequency Control (S1 dip switch 4) ............................................................ 43
4. Continuous Dispensing Timer (S1 dip switch 5 & 6) .............................................. 43
5. Bin Control Selector (S1 dip switch 7) ................................................................... 44
6. BC(2) (Mech. Stand-Alone or Backup (only)) Shutdown Delay (S1 dip switch 8) .. 44
7. Factory Use (S1 Dip Switch 9 & 10) ....................................................................... 44
C. Power Switch and Control Switch ................................................................................ 45
IV. Refrigeration Circuit and Component Service Information.............................................. 46
A. Refrigeration Circuit Service Information .................................................................... 46
B. Component Service Information .................................................................................. 49
IMPORTANT
This manual should be read carefully before the appliance is serviced. Read
the warnings and guidelines contained in this manual carefully as they provide
essential information for the continued safe use, service, and maintenance of the
appliance. Retain this manual for any further reference that may be necessary.
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