This service manual is designed to answer questions related to model operational requirements, troubleshooting and disassembly/assembly procedures. It contains electronic ignition operation, trouble- shooting and electronic control operations that include diagnostic codes, ladder diagrams, wire diagrams and troubleshooting. It also includes BTU ratings, orifice size and gas pressure technical data for each model.

For example; if you need to know information on manual controls (manual controls - controls the oven with hydraulic thermostat, electric mechanical timer.) refer to SECTION 2: OVERVIEW OF OPERATIONAL SEQUENCES, Sequence of Operation. This book is broken down into sections, each section will list the applicable topics. Use the Table of Contents to locate the topic and function that you are attempting to trouble-shoot.

Table of Contents

 

SECTION 1: SPECIFICATION & DIMENSIONS

3

GAS CONVECTION OVEN "GAS SPECIFICATIONS”

4

DIMENSIONS & SPECIFICATIONS

4

SECTION 2: OVERVIEW OF OPERATIONAL SEQUENCES

4

MANUAL CONTROLS - "M”

5

Sequence of Operation

5

Manual Ladder Diagram

5

CALIBRATION OF THERMOSTAT

5

Instrumentation

5

Weighting

6

Thermostat Operation

7

ELECTRONIC CONTROLS - “E”

8

Sequence of Operation (With the Oven Doors Closed)

8

Electonic Ladder Wire Diagram

8

ELECTRONIC CONTROL FAILURE CODES

9

CHART FOR INTERNAL OVEN TEMPERATURE SENSOR

9

ROBERTSHAW COM6000 CONTROLLER

9

USER PREFERENCE OFFSET FOR THE ELECTRONIC CONTROLLERS

10

COM6000 UPO MODE

11

COM6700 UPO MODE

11

ELECTRONIC PILOT & MAIN BURNER IGNITION SEQUENCE

12

FIRST STAGE - TRIAL FOR PILOT IGNITION

12

SECOND STAGE - MAIN BURNER OPERATION

12

SAFETY LOCKOUT TIME

12

SERVICE

13

PRELIMINARY CHECK

13

SYSTEM TROUBLE SHOOTING

13

S86 CHECKOUT AND TROUBLE SHOOTING

14

CHECK SPARK IGNITION CIRCUIT

15

CONTROL MODULE FLAME SENSOR CIRCUIT

15

2

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Garland MCO-GD-10E, MCO-GD-10M, MCO-GS-10M Table of Contents, Specification & Dimensions, Overview of Operational Sequences

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.