Table of Contents
2 SMSO-2-02.00- 15.07.03
3.2.1 General .......................................................................................................................................................................... 32
3.2.2 Programming.................................................................................................................................................................. 32
3.2.3 ESD protection (electro static discharge) ....................................................................................................................... 32
3.2.4 Lubricant ........................................................................................................................................................................ 32
3.2.5 Grinder ........................................................................................................................................................................... 33
3.2.6 Brewing unit ................................................................................................................................................................... 35
3.2.7 Rotary-vane type pump.................................................................................................................................................. 39
3.2.8 Flow meter ..................................................................................................................................................................... 41
3.2.9 Non-return valve............................................................................................................................................................. 43
3.2.10 Safety valve.................................................................................................................................................................... 44
3.2.11 Solenoid valves Drawing symbol illustration .................................................................................................................. 45
3.2.12 Safety thermostat........................................................................................................................................................... 47
3.2.13 Temperature sensor....................................................................................................................................................... 48
3.2.14 Level probe .................................................................................................................................................................... 49
3.2.15 Screw connections / pipes / hoses ................................................................................................................................. 51
3.2.16 Instant heater ................................................................................................................................................................. 52
3.2.17 Booster........................................................................................................................................................................... 56
3.2.18 Steam generator ............................................................................................................................................................ 58
3.2.19 Unit control system (EHS).............................................................................................................................................. 59
3.2.20 Power PCB..................................................................................................................................................................... 61
3.3 Refrigerator (optional feature) ........................................................................................................................................ 64
3.4 System documentation................................................................................................................................................... 67
3.4.1 General .......................................................................................................................................................................... 67
3.4.2 Brewing system (coffee)................................................................................................................................................. 69
3.4.3 Brewing system (coffee) with booster ............................................................................................................................ 73
3.4.4 Hot water system (tea) ................................................................................................................................................... 75
3.4.5 Hot water system (tea) with booster............................................................................................................................... 77
3.4.6 Steam system (milk drinks) ............................................................................................................................................ 79
3.4.7 Milk drinks ...................................................................................................................................................................... 81
3.4.8 Milk / milk foam (cappuccino or milk coffee)................................................................................................................... 83
3.4.9 Rinsing the milk – milk foam pipes (refrigerator with cold water rinse)........................................................................... 85
3.4.10 Rinsing the milk – milk foam pipes (refrigerator with hot water rinse / HOTFLUSH) ..................................................... 87
4 Fault diagnosis ..............................................................................................................89
4.1 General notes................................................................................................................................................................. 89
4.1.1 How this section is structured......................................................................................................................................... 89
4.1.2 Causes of malfunction.................................................................................................................................................... 89
4.1.3 Overview of faults........................................................................................................................................................... 89
4.1.4 Fault lists........................................................................................................................................................................ 90
4.1.5 Grades of fault................................................................................................................................................................ 90
4.1.6 Tips for fault diagnosis ................................................................................................................................................... 91
4.1.7 Frequent causes of faults............................................................................................................................................... 91
4.2 Fault lists for control system / programming system ...................................................................................................... 93
4.2.1 Overview ........................................................................................................................................................................ 93
4.3 Fault lists – Brewing system......................................................................................................................................... 101
4.3.1 Overview ...................................................................................................................................................................... 101
4.4 Fault lists - hot water system........................................................................................................................................ 113
4.4.1 Overview ...................................................................................................................................................................... 113
4.5 Fault lists – steam system............................................................................................................................................ 117
4.5.1 Overview ...................................................................................................................................................................... 117
4.6 Fault lists – Refrigerator (milk / milk foam) ................................................................................................................... 121
4.6.1 Overview ...................................................................................................................................................................... 121
5 Maintenance.................................................................................................................127
5.1 Contents....................................................................................................................................................................... 127
5.2 Contents (SO-2 with Booster) ...................................................................................................................................... 128
5.3 Preparing for maintenance work .................................................................................................................................. 129
5.3.1 Safety Regulations ....................................................................................................................................................... 129
5.3.2 Accessibility of the machine ......................................................................................................................................... 129
5.3.3 Notes on the maintenance instructions ........................................................................................................................ 129
5.3.4 Assembling / installing the components ....................................................................................................................... 129
5.4 Dismantling / installing ................................................................................................................................................. 130
5.4.1 Disconnect supply connections.................................................................................................................................... 130
5.4.2 Bean container ............................................................................................................................................................. 131
5.4.3 Cup plate...................................................................................................................................................................... 132
5.4.4 Casings / front covers .................................................................................................................................................. 133
5.4.5 Grinder ......................................................................................................................................................................... 135
5.4.6 Booster......................................................................................................................................................................... 137
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