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Part # GCTRM Rev 3 (12/10/09)
Page 54
Thermocouples And How They Work
Thermocouples are used to generate voltage to hold a
magnet on a pilot safety valve. It plays an important part of
the flame safety system in a gas oven.
The thermocouple uses the combined effects of temperature
change and electricity. It consists of a bimetallic strip joined
at one end (called the hot junction). When the hot junction is
heated, a DC voltage is generated across the two other ends
of the strips (the cold junction).
The thermocouple is used to prove the pilot flame. If the pilot
flame goes out, the thermocouple prevents the main gas
from opening.
The magnitude of the voltage across the cold junction
depends on the:
• Two materials of the bimetallic strip
• Temperature difference between the hot and cold
junctions
The small amount of electricity produced is 20 to 30
millivolts. This millivoltage is used to hold open an
electromagnet assembly in the gas control. If the pilot
goes out, the thermocouple will cool down and no longer
generate electricity and in turn, de-energize the magnet,
closing the valve.
Hot
Junction
Dissimilar
Metals
Cold
Junctions
Negative Positive
Flame
Содержание G Series
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Страница 5: ...Part GCTRM Rev 3 12 10 09 Page 5 Section 1 Model Number Identification...
Страница 17: ...Part GCTRM Rev 3 12 10 09 Page 17 Section 2 Serial Number Identification...
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Страница 21: ...Part GCTRM Rev 3 12 10 09 Page 21 Section 3 Certification Markings...
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Страница 25: ...Part GCTRM Rev 3 12 10 09 Page 25 Section 4 Properties And Characteristics of Fuel Gases...
Страница 27: ...Part GCTRM Rev 3 12 10 09 Page 27 Section 5 Operation Of Controls...
Страница 31: ...Part GCTRM Rev 3 12 10 09 Page 31 Section 6 Gas Valves And Adjustments...
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Страница 37: ...Part GCTRM Rev 3 12 10 09 Page 37 Section 7 Adjustments Removal Replacement And Calibration Of Controls...
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Страница 49: ...Part GCTRM Rev 3 12 10 09 Page 49 Section 8 Gas Pressure Regulators...
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Страница 53: ...Part GCTRM Rev 3 12 10 09 Page 53 Section 9 Thermocouples And How They Work...
Страница 55: ...Part GCTRM Rev 3 12 10 09 Page 55 Section 10 Trouble Shooting The Oven Pilot Safety System...
Страница 59: ...Part GCTRM Rev 3 12 10 09 Page 59 Section 11 Gas Equipment Field Service Trouble Shooting Guide...
Страница 61: ...Part GCTRM Rev 3 12 10 09 Page 61 Section 12 Maintenance Care Instructions For Ranges And Oven Surfaces...
Страница 65: ...Part GCTRM Rev 3 12 10 09 Page 65 Section 13 Gas Technician s Glossary...
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Страница 71: ...Part GCTRM Rev 3 12 10 09 Page 71 Section 14 Range Wiring Diagrams...
Страница 75: ...Part GCTRM Rev 3 12 10 09 Page 75 3056100 US Range C836C Cuisine Series...
Страница 76: ...Part GCTRM Rev 3 12 10 09 Page 76 229064 US Range 836C Cuisine Series...
Страница 77: ...Part GCTRM Rev 3 12 10 09 Page 77 2706601 US Range Px S Series Left Single RC Oven...
Страница 78: ...Part GCTRM Rev 3 12 10 09 Page 78 2706602 US Range Px S Series Right Single RC Oven...
Страница 79: ...Part GCTRM Rev 3 12 10 09 Page 79 2706603 US Range Px S Series 2 RC Ovens...
Страница 80: ...Part GCTRM Rev 3 12 10 09 Page 80 4514771 US Range Px SX Series Left Single RC Oven...
Страница 81: ...Part GCTRM Rev 3 12 10 09 Page 81 4514772 US Range Px SX Series Right Single RC Oven...
Страница 82: ...Part GCTRM Rev 3 12 10 09 Page 82 4514774 US Range Px SX SeriesTwo RC Ovens...
Страница 83: ...Part GCTRM Rev 3 12 10 09 Page 83 2529700 ME MSTE 40RC Electric Spark...
Страница 84: ...Part GCTRM Rev 3 12 10 09 Page 84 2529701 M MS 40RC...
Страница 85: ...Part GCTRM Rev 3 12 10 09 Page 85 2529600 M MS 40 Electric Spark...
Страница 86: ...Part GCTRM Rev 3 12 10 09 Page 86 2444200 Sentry Electric Spark...
Страница 87: ...Part GCTRM Rev 3 12 10 09 Page 87 2444300 STE286RC STE284RC Left ST283RCE...
Страница 94: ...Part GCTRM Rev 3 12 10 09 Page 94 30129 Sheet 2 of 3 Master Series Broiler Range interconnection kit...
Страница 95: ...Part GCTRM Rev 3 12 10 09 Page 95 30129 Sheet 3 of 3 Restaurant Series Broiler Range interconnection kit...
Страница 97: ...Part GCTRM Rev 3 12 10 09 Page 97 Section 15 Service Bulletins...
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