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11.20 Heater Circuit - COTI
The water temperatures in the Gravity Boiler and the Pressure Boiler (Espresso machines)
are controlled by NTC thermistor probes. They have a variable resistance - high resistance
when cold, low resistance when hot. The thermistor probe is in contact with the water and
continually monitor the water temperature. At room ambient temperature the thermistor
resistance is approx. 3000 ohms. At 205°F the thermistor resistance is approx. 200 ohms.
Both Boiler Heating Elements are controlled by a Solid-State Relay which are in turn con-
trolled from the I/O Board. The Gravity Boiler Element is rated at 1.2kW, and the Espresso
Boiler Element is rated at 1.0kW.
Should control of the Heating Elements fail for any reason, both Elements are protected by
inline resettable Thermal Cut-Outs. These are positioned in the overflow pipe of the Gravity
Boiler (176°F), and on the casing of the Espresso Boiler (244°F).
154
Содержание COTI
Страница 1: ...Part No 403018 Issue April 2021 Technical Manual From software version 3 7 1 ...
Страница 2: ......
Страница 30: ...Section 3 Programming Mode 20 ...
Страница 33: ...Section 4 Customising the User Interface Technical Manual 13 14 15 16 17 18 19 20 21 22 23 24 23 ...
Страница 35: ...Section 4 Customising the User Interface Technical Manual 7 8 9 10 11 25 ...
Страница 128: ...Section 8 Espresso System 8 2 1 Espresso Water Flow Diagram 118 ...
Страница 148: ...Section 11 Electrical Electronic Diagrams Atlas H Board Pin Connections COTI 138 ...
Страница 150: ...Section 11 Electrical Electronic Diagrams Atlas H Board Pin Connections LINEA 9 10 1 140 ...
Страница 152: ...Section 11 Electrical Electronic Diagrams 11 8 Input Circuit 1 COTI 142 ...
Страница 153: ...Section 11 Electrical Electronic Diagrams Technical Manual 11 9 Input Circuit 2 COTI J2 J7 143 ...
Страница 154: ...Section 11 Electrical Electronic Diagrams 11 10 Input Circuit 1 LINEA 144 ...
Страница 155: ...Section 11 Electrical Electronic Diagrams Technical Manual 11 11 Input Circuit 2 LINEA J2 J7 ORANGE BLUE 145 ...
Страница 156: ...Section 11 Electrical Electronic Diagrams 11 12 Output Circuit 1 COTI 146 ...
Страница 158: ...Section 11 Electrical Electronic Diagrams 11 14 Output Circuit 1 LINEA 148 ...
Страница 162: ...Section 11 Electrical Electronic Diagrams 11 18 Power Circuit LINEA Instant Freshbrew 176 O 244 O 1 2kW 176 O 152 ...
Страница 163: ...Section 11 Electrical Electronic Diagrams Technical Manual 11 19 Power Circuit LINEA Espresso 244 O 1kW 153 ...
Страница 168: ...NOTES 158 ...
Страница 169: ......