Part # GCTRM Rev 3 (12/10/09)
Page 44
Heavy Duty FDO Control Thermostat
The FD Control is a heavy duty, high capacity gas thermostat.
It is a modulating snap by-pass.
Garland uses the FD Control for range ovens and Pizza decks.
Adjustments are at the front for by-pass and temperature
calibration.
Instructions for Model FDO
Heavy Duty Control
450 500
5
50
15
0
300
2
50
3
00
3
50
4
00
Calibration
Lock
Screws
By-pass Flame
Adjuster
Indicator Mark
Calibration
Plate
Dial
Stop
MODEL
FDO
B
The model FDO is a precision made instrument, carefully set
at the factory to accurately control oven temperatures, from
150° F (66°C) to 500°F (260°C). All adjustments are accessible
from the front of the appliance after removing the dial. To
remove the dial, grasp the knob portion and pull straight out.
1. With the oven cold, turn the dial counter-clockwise slowly
from “Low Stop”, until the bypass seat just snaps on.
2. Remove the dial.
3. With a screw driver, turn the bypass fl ame adjuster
screw counter-clockwise to increase the bypass fl ame
or clockwise to decrease the entire fl ame to a minimum
stable fl ame.
4. Replace the dial. CAUTION: While making this adjustment,
if the oven should become heated while the dial is set at
a low range below 350°F (177°C), the bypass fl ame will
shut off completely. If this occurs, turn the dial counter-
clockwise slowly until the bypass gas snaps on. Then
check the bypass adjustment as stated.
Below is the dial insert used by Garland on FD Control
thermostats. Note the space between 300°F and the 350°F
mark.
Re-calibration
Field re-calibration is seldom necessary, and should not
be resorted to unless poor cooking results defi nitely prove
that the control is not maintaining the temperature to
which the dial is set. To check the oven temperature when
re-calibrating use an indicating potentiometer or reliable
mercury oven thermometer.
1. Place the thermocouple of the test instrument or
thermometer in the geometric center of the oven.
2. Light the main burner. Observe which indicator mark
aligns with the low stop position of the dial. Use this
indicator mark for all settings.
3. Turn the dial so 400°F (240°C) lines up with the “low
setting” indicator mark.
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...
Page 108: ......