Part # GCTRM Rev 3 (12/10/09)
Page 57
3/8" TO 1/2"
Pilot
Thermocouple
If, while following the proper lighting procedures, the
magnet cannot be made to “HOLD”, inspect the pilot fl ame
for proper size and adjustment (see pilot burner adjustment).
If the magnet will still not hold, make the following checks.
Closed Circuit Test
(To test magnet & thermocouple as a complete
unit)
To make the closed circuit test, remove the thermocouple
lead from the magnet contact. Place an adapter (Robertshaw
Part #75036) in the magnet contact and turn the
thermocouple into the adapter fi nger tight. Connect millivolt
leads to the adapter and thermocouple lead as shown in
fi gure “A”.
Figure A
BLACK
RED
Terminal Boss
Adapter
Thermocouple Tube
PN 4526299
In the Sit Control, insert a metric M9 adapter in the magnet
contact to complete the safety valve check as shown in
Figure B .
Figure B
1. Make sure the thermocouple is properly inserted into
the pilot housing, and has no play. Also check gas tubing
connection at the pilot and tighten if loose.
2. Re-light the pilot, and read the meter after the pilot
has been burning for three minutes. If the pilot will not
continue burning, depress and hold the temperature
knob to manually open the SIT safety valve to check
the thermocouple output for this closed circuit check.
If insuffi cient (normal output for closed circuit is
8-14 millivolts), and under 7 millivolts, replace the
thermocouple. If the millivolt reading is above 7 mV, and
the safety magnet does not hold, replace the valve.
3. If the closed circuit mV reading is the same as the open
circuit reading, the coil is electrically open, and the valve
must be replaced.
4. Check for drop out time which should occur within 60
seconds and at approximately 2 mV since the pilot was
out.
5. Relight the pilot and turn the main burner On. As the
oven heats up, it is normal to see a slight decrease of
millivolts.
Thermocouples
SIT
Robertshaw
Orkli
mV
Closed
Circuit
8-14
10-15
8-14
Open
Circuit
18-28
20-30
24-30
Drop
out
2
5
2
Summary of Contents for G Series
Page 2: ...Part GCTRM Rev 3 12 10 09 Page 2...
Page 4: ...Part GCTRM Rev 3 12 10 09 Page 4...
Page 5: ...Part GCTRM Rev 3 12 10 09 Page 5 Section 1 Model Number Identification...
Page 17: ...Part GCTRM Rev 3 12 10 09 Page 17 Section 2 Serial Number Identification...
Page 20: ...Part GCTRM Rev 3 12 10 09 Page 20...
Page 21: ...Part GCTRM Rev 3 12 10 09 Page 21 Section 3 Certification Markings...
Page 24: ...Part GCTRM Rev 3 12 10 09 Page 24...
Page 25: ...Part GCTRM Rev 3 12 10 09 Page 25 Section 4 Properties And Characteristics of Fuel Gases...
Page 27: ...Part GCTRM Rev 3 12 10 09 Page 27 Section 5 Operation Of Controls...
Page 31: ...Part GCTRM Rev 3 12 10 09 Page 31 Section 6 Gas Valves And Adjustments...
Page 36: ...Part GCTRM Rev 3 12 10 09 Page 36...
Page 48: ...Part GCTRM Rev 3 12 10 09 Page 48...
Page 49: ...Part GCTRM Rev 3 12 10 09 Page 49 Section 8 Gas Pressure Regulators...
Page 52: ...Part GCTRM Rev 3 12 10 09 Page 52...
Page 53: ...Part GCTRM Rev 3 12 10 09 Page 53 Section 9 Thermocouples And How They Work...
Page 55: ...Part GCTRM Rev 3 12 10 09 Page 55 Section 10 Trouble Shooting The Oven Pilot Safety System...
Page 65: ...Part GCTRM Rev 3 12 10 09 Page 65 Section 13 Gas Technician s Glossary...
Page 70: ...Part GCTRM Rev 3 12 10 09 Page 70...
Page 71: ...Part GCTRM Rev 3 12 10 09 Page 71 Section 14 Range Wiring Diagrams...
Page 75: ...Part GCTRM Rev 3 12 10 09 Page 75 3056100 US Range C836C Cuisine Series...
Page 76: ...Part GCTRM Rev 3 12 10 09 Page 76 229064 US Range 836C Cuisine Series...
Page 77: ...Part GCTRM Rev 3 12 10 09 Page 77 2706601 US Range Px S Series Left Single RC Oven...
Page 78: ...Part GCTRM Rev 3 12 10 09 Page 78 2706602 US Range Px S Series Right Single RC Oven...
Page 79: ...Part GCTRM Rev 3 12 10 09 Page 79 2706603 US Range Px S Series 2 RC Ovens...
Page 80: ...Part GCTRM Rev 3 12 10 09 Page 80 4514771 US Range Px SX Series Left Single RC Oven...
Page 81: ...Part GCTRM Rev 3 12 10 09 Page 81 4514772 US Range Px SX Series Right Single RC Oven...
Page 82: ...Part GCTRM Rev 3 12 10 09 Page 82 4514774 US Range Px SX SeriesTwo RC Ovens...
Page 83: ...Part GCTRM Rev 3 12 10 09 Page 83 2529700 ME MSTE 40RC Electric Spark...
Page 84: ...Part GCTRM Rev 3 12 10 09 Page 84 2529701 M MS 40RC...
Page 85: ...Part GCTRM Rev 3 12 10 09 Page 85 2529600 M MS 40 Electric Spark...
Page 86: ...Part GCTRM Rev 3 12 10 09 Page 86 2444200 Sentry Electric Spark...
Page 87: ...Part GCTRM Rev 3 12 10 09 Page 87 2444300 STE286RC STE284RC Left ST283RCE...
Page 97: ...Part GCTRM Rev 3 12 10 09 Page 97 Section 15 Service Bulletins...
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