Garland MCO-GD-10E, MCO-GD-10M, MCO-GS-10M, MCO-GS-10E service manual Weighting

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A thermocouple type test instrument is preferred for measuring oven temperatures accurately. Mercury thermometers are acceptable providing they can be proven accurate.

Regardless of the type instrument used, it is most desirable to double-check it just before making an oven temperature check. This can be done simply and quickly by placing the thermocouple tip (or immersing the entire mercury thermometer) in boiling water. Note: Mercury oven thermometers should be the "total immersion type." The resulting reading should be within several degrees of 212°, -depending on the altitude.

Generally, a mercury thermometer can drop in excess of 25° when the doors are opened to check oven tem perature. This condition makes it extremely difficult to get a true temperature reading.

Almost all ranges today have oven burners which cycle "on and off." The high and low points of the resulting temperature "swing" (differential) in the oven must be measured-and averaged-to determine the true operating temperature. A thermocouple type test instrument is best suited to measure these temperature changes quickly and accurately, and without opening the oven door.

With an accurate, thermocouple test instrument or mercury thermometer, it is still difficult to measure these changing oven temperatures and then, average them correctly. This is why we recommend that the thermocouple tip or the bulb of the thermometer be "weighted." Weighting (adding mass) to the test instrument compensates for oven temperature changes by making the test instrument less sensitive to these constant changes in temperature. Note: How this weighting can be done is discussed later.

Measuring these changing high and low temperatures points in an oven is possible with either type of test device without weighting but is subject to possible inaccuracies. This is most true at low temperature setting because, in this area, the function of "time" becomes a factor. The simple averaging of temperatures, then, may not produce the true operating temperature. "Weighting" provides the compensation for both time and temperature that is necessary.

We produced (next page) test curves showing actual results in the low temperature area showing the difference in results when using an unweighted and a weighted thermocouple or thermometer. Tests were made with the same control, same oven and dial at 170° mark (not move d).

Chart No.1

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Chart No.2

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Unweighted Thermocouple dial setting 170 F

Weighted Thermocouple Dial Setting 170F

From the above, it can be seen that an error of 15° is possible. Chart #1, unweighted thermocouple indicates an erroneous average oven temperature of 185°. Chart #2, weighted thermocouple indicates the "average" or true temperature to be 170°.

￿WEIGHTING

A thermocouple can be weighted by clamping the tip between two one-inch squares of 1/16" thick aluminum. The thermocouple can also be weighted (just as successfully) by using a letter-size sheet of aluminum foil. Fold the foil

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Contents Direct ON-SITE Service 1-800-451-1165 General Information GarlandTable of Contents Specification & DimensionsOverview of Operational Sequences Component Access of Functional Components Common Wire DiagramsPilot Orifice PRES. W/C GAS Convection Oven GAS Specifications Main Pilot TotalDimensions & Specifications AMT Orifice NAT PROManual Controls M Calibration of ThermostatInstrumentation Weighting Thermostat Operation Calibration NotesElectronic Controls E Electronic Control Failure Codes TempRobertshaw COM6000 Controller Operation of the Pulse Function Operation of the Temperature FunctionOperation of the Timer Function User Preference Offset for the Electronic ControllersTo SET Oven Into Pulse Mode Timer Resolution ChangingTo SET Hold Temperature Change the HertzSafety Lockout Time Chain ProgrammingSecond Stage Main Burner Operation Start Stage ENDStart YES Spark Stops When Pilot is LIT?Troubleshooting Ends S86 Checkout YES Spark Across IGNITOR/SENSOR GAPControl Module Flame Sensor Circuit Check GroundingCheck Spark Ignition Circuit Examples of Unsatisfactory Pilot FlamesAppearance Cause Right Front Component LocationsTop Front Center Lower FrontTo Remove Doors from the Oven File NameTo Reinstall Doors onto Convection Oven Installing and Adjusting Door ChainDisassembly of the Left Door Disassembly of the Right Door w/o window Page To Replace or Adjust Door Latch Mechanism To Replace Convection Oven Motor Assembly Drawing BelowConvection Oven Motor Assembly Page Common Wire Diagrams Page

MCO-GD-10M, MCO-GS-10E, MCO-GD-10E, MCO-GS-10M specifications

Garland has made a significant mark in the market with its range of high-efficiency heaters, particularly the MCO-GS-10M, MCO-GD-10E, MCO-GS-10E, and MCO-GD-10M models. These advanced heating solutions are designed for various applications where reliability, efficiency, and versatility are essential.

The MCO-GS-10M and MCO-GD-10M models are particularly notable for their robust construction and dual-fuel capability, allowing them to utilize natural gas or propane. This flexibility ensures that users can choose the most cost-effective fuel source, making them ideal for both residential and commercial use. These models are equipped with state-of-the-art ignition systems that guarantee a swift and trouble-free start every time, minimizing downtime.

On the other hand, the MCO-GS-10E and MCO-GD-10E models are electric heaters that offer an environmentally friendly alternative without compromising performance. These units are designed with high-efficiency heating elements that ensure rapid heating while consuming less energy. Furthermore, their sleek and modern design allows them to blend seamlessly into any indoor environment, making them suitable for use in homes, offices, and other professional settings.

All four models incorporate advanced safety features, including automatic shut-off mechanisms to prevent overheating. They are designed with user-friendly controls, allowing operators to easily set the desired temperature and adjust fan speeds based on their specific heating needs.

In terms of durability, Garland has ensured that the exterior of these heaters is constructed from high-grade materials capable of withstanding harsh conditions. This ensures longevity and reduces the need for frequent replacements, providing excellent value for money.

Moreover, the technology embedded within these models, such as multi-stage heating and precise temperature controls, offers an optimal heating experience. They are designed to be energy efficient, helping consumers save on utility bills while still maintaining comfortable ambient temperatures.

Overall, the Garland MCO-GS-10M, MCO-GD-10E, MCO-GS-10E, and MCO-GD-10M units exemplify the perfect blend of innovation, efficiency, and safety. These models cater to a diverse range of heating needs while being environmentally aware, making them an excellent choice for users seeking reliable and effective heating solutions. Whether it's for home use or in a commercial setting, Garland's heaters deliver excellent performance that stands the test of time.
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