Table Of Contents - Bunn Ultra-1 Service & Repair Manual

WARRANTY ..........................................................................................................................2
USER NOTICES ....................................................................................................................4
SITE PREPARATION ............................................................................................................4
INTRODUCTION ...................................................................................................................4
TEMP & TORQUE SCREEN .................................................................................................5
OPERATING CONTROLS .....................................................................................................6
USING THE DISPENSER FOR GRANITA-TYPE PRODUCTS .............................................7
USING THE DISPENSER FOR COLD LIQUID PRODUCTS ................................................7
RECOMMENDED CLEANING ..............................................................................................8
ASSEMBLY FOLLOWING CLEANING ..................................................................................9
AUTO-FILL CLEANING INSTRUCTIONS ............................................................................10
PREVENTIVE MAINTENANCE SCHEDULE ......................................................................11
REQUIRED REGULAR MAINTENANCE .......................................................................12,13
TROUBLESHOOTING
No power ........................................................................................................................14
Chills but won't freeze ....................................................................................................15
No cooling at all .............................................................................................................16
Freezes, but not thick enough ........................................................................................17
No hood lamps ...............................................................................................................17
Noise ..............................................................................................................................18
Auger won't turn .............................................................................................................18
Torque sensor error ........................................................................................................19
Temperature sensor error ..............................................................................................20
Clean filter messages ....................................................................................................21
SERVICE
Access Panels ................................................................................................................22
Auger Motors..................................................................................................................23
Auger Motor Capacitors .................................................................................................24
Auger Shaft Assembly ...............................................................................................25,26
Circuit Breaker ...............................................................................................................27
Compressor
Americold .......................................................................................................28,29,30
Embraco .....................................................................................31,32,33,34,35,36,37
Relay (or Contactor on Early Models) ............................................................................38
Control Board .................................................................................................................39
Cooling Drum Alignment ................................................................................................40
Fan .................................................................................................................................41
Hot Gas Temperature Sensor ........................................................................................42
Lamp Cord Assembly .....................................................................................................43
Lamp Cord Connector ....................................................................................................44
Lamp Holder/Socket Assembly ......................................................................................45
LED Lamps ....................................................................................................................46
Lamp Relay ....................................................................................................................47
Membrane Switch ..........................................................................................................48
Solenoids .......................................................................................................................49
Temperature Sensor ......................................................................................................50
Torque Sensor Circuit Board ..........................................................................................51
Transformer ...................................................................................................................52
Auto Fill Systems ............................................................................................53,54,55,56
Coolant Schematics .............................................................................................................57
Triac Maps ...........................................................................................................................58
Input and Output Chart ........................................................................................................59
Electrical Schematics .................................................................................................60,61,62
CONTENTS
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