Garland 200 service manual

GARLAND COMMERCIAL INDUSTRIES

185 East South Street

Freeland, Pennsylvania 18224

Phone: (570) 636-1000

Fax: (570) 636-3903

GARLAND COMMERCIAL RANGES, LTD.

1177 Kamato Road, Mississauga, Ontario L4W 1X4

CANADA

Phone: 905-624-0260

Fax: 905-624-5669

Enodis UK LTD.

Swalloweld Way, Hayes, Middlesex UB3 1DQ ENGLAND

Telephone: 081-561-0433

Fax: 081-848-0041

Service Manual For MCO GS/GD

Full Size "Gas" Convection Ovens

With 200, 410, 450, 455, 470, 475 Series

Controllers

Contents

Main Page TABLE OF CONTENTS Page Page CONTENTS DIMENSIONS & SPECIFICATIONS ...............7 INSTALLATION................................8 MOTOR CARE................................26 OPERATION..................................12 DIMENSIONS & SPECIFICATIONS Part # MCOSM06 Rev 1 (11/03/08) Page 7 Single-Deck Models Installation Notes: INSTALLATION Installation Notes: Installation Of Ovens Equipped With Casters Installation Of Double Deck Models Page Page Less than 10 feet (3 meters) More than 10' (3 meters) 2' (60cm) Min. 3' (90cm) Min. 3' (90cm) Min. Testing & Lighting Instructions OPERATION Master 200 Mechanical Control with Timer Start Up: Fan Speed: Lights: with Mechanical Timer On Start Up: Controller Keys On Start Up: Operating the Controls Cook-N-Hold Operation Core Probe Operation CHANGING FACTORY SETBACK PROGRAM MASTER 470/475 ELECTRONIC PROGRAMMABLE CONTROL Manual cooking: Manual cooking using Cook-N-Hold: Programming Product Keys (Master 475): Page Programming Product Keys (Master 470): Cooking Using The Product Keys (Master 475 and Master 470): Verifying hold time (Master 475 and Master 470): Cooking with the Shelf Timer (Master 475 and Master 470): PERFORMANCE RECOMMENDATIONS COOKING GUIDE COOK AND HOLD PROBLEMS / SOLUTIONS CLEANING & MAINTENANCE Break-In Period Exterior Cleaning Interior Cleaning Fan Area Maintenance MOTOR CARE Page IGNITION SEQUENCE TROUBLE SHOOTING TABLE SERVICE Preliminary Check System Trouble Shooting Check Grounding Check Spark Ignition Circuit Examples Of Unsatisfactory Pilot Flames. Control Module Flame Sensor Circuit. G77x INTERMITTENT PILOT CONTROLS Application Requirements Operating Mode Denitions Sequence of Operation Part # MCOSM06 Rev 1 (11/03/08) Page 33 Figure 2 Wiring Diagram For Integral Spark/Sense Without Vent Damper G76X DIRECT SPARK IGNITION CONTROLS Application Requirements Operating Mode Denitions Sequence Of Operation Page 36 Part # MCOSM06 Rev 1 (11/03/08) Fig 3 Sequence of Operation Wiring Diagram for G76x Ignniton Control Page Page GENERAL CALIBRATION Instrumentation Weighing of Thermocouple Resistance Vs. Temperature Chart For Internal Oven Temperature Sensor 200 & 300 SERIES CONTROLLERS CALIBRATION Gas Units Calibration 300 Series Gas Units Calibration 200 Series Electric Units Calibration 300 Series Electric Units 200 series Page DOORS To Remove Doors From Oven To Reinstall Doors onto Convection Oven Installing and Adjusting Door Chain Disassembly of the Left Door Disassembly of the Right Door (w/o window) To Replace Or Adjust The Door Latch Mechanism DOOR LATCH MECHANISM MOTOR To Replace Convection Oven Motor Assembly Page DOOR MICROSWITCH PROBES Oven Cavity Probe Cavity Core Probe (455 Only) KEY PAD TEST DISPLAY MCO CONVECTION OVEN GAS VALVE SIDE VIEW TOP VIEW Intermittent Pilot Ignition Control Specications Page Testing Page CONTROLS Page Page CONTROLLER OPERATIONAL TESTS 200 Series Controller (Thermostat only) 300 Series Controller (Thermostat and relay board) 410 Series Controller 450 Series Controller CONTROLLER FAULT FINDING DISPLAY FAULT Display does not light up Display does not change. Display reads. Keypad Fault No Sound Fault Door Switch Fault Fan Fault No Heat ADDITIONAL NOTES GENERAL TROUBLE SHOOTING GUIDE Page Page Page Convection Oven Bulletins Bulletin # Bulletin Subject Date Issued Page Page Request For Parts Return Authorization Page Page Page Page Page Page Page Page Page Page Page Page Page 1-800-427-6668 www.garland-group.com Fax 1800-361-7775 Page BULLETIN # B-18-2002 Trouble Shooting Guide PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION 1-800-427-6668 www.garland-group.com Fax: 1-800-361-7745 B. Page 2 of 9 1-800-427-6668 www.garland-group.com Fax: 1-800-361-7745 Temperature Calibration 200 & 300 Series Controllers ONLY 1-800-427-6668 www.garland-group.com Fax: 1-800-361-7745 1-800-427-6668 www.garland-group.com Fax: 1-800-361-7745 BULLETIN # B-19-2001 1-800-427-6668 www.garland-group.com Fax: 1-800-361-7745 BULLETIN B-107-2001 DISPLAY Page BULLETIN # B-20-2004 BULLETIN # B-26-2004 BULLETIN # B-73-2007-S Subject: Rating Plate Motor Return Model Affected: Garland Convection or Moisture Plus Oven Page Page Page Master Convection Ovens Wiring Diagrams