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TurboChef Service Manual
FOR THE TURBOCHEF NGC (TORNADO) OVEN
Accelerating the World of Cooking
800.90TURBO
Part Number: NGC-1007 / Revision D / September 2007
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For further information call: 800.90TURBO +1 214.379.6000 Accelerating the World of Cooking
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IMPORTANT SAFETY INFORMATION - PLEASE READ FIRST WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Thoroughly read the installation, operating, and maintenance instructions before installing or servicing this equipment. This product employs an exposed radiant heating element in the bottom of the cavity. This element is HOT during operation and will remain at dangerous temperatures after the unit is switched off. NEVER at
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Table of Contents Important Safety Instructions i General Safety Information i Reducing Fire Risk i Precautions to be Observed Before and During Servicing to Avoid Possible Exposure to Excessive Microwave Energy ii Grounding Instructions ii Power Cord Replacement ii RF Interference Considerations ii Chapter 1: Installation, Specifications and Maintenance Specs and Dimensions 1 Dimensions 1 Construction 1 Standard Features 1 Certifications 1 Packaging 1 Power Supply (Domestic and Intl Electrical
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Oven Options 18 User Configurable Options - Enable/Disable Codes 19 User Configurable Options - Access Codes 19 Control System Panel Parts 20 Control System Troubleshooting 21 Chapter 5: The Microwave System Voltage Doubler Circuit Description 25 Monitor Circuit Description 25 Voltage Doubler Theory of Operation 26 Microwave System Parts 26 Microwave System Components 28 Wave Guide Cover Replacement 29 Wave Guide/Wave Guide Cover Parts 30 Wave Guide Replacement 30 High Voltage and Filament Tran
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Chapter 7: The Convection Circuit Convection Circuit Components 47 Convection Circuit/Blower Motor Parts 48 Convection Circuit Troubleshooting 49 Motor Winding Resistances Table 50 Chapter 8: IR Element and Catalytic Converter Components 51 IR Element and Catalyst Removal 51 Removing the IR Element 51 Removing & Installing the Catalytic Converter 52 Installing a New IR Element 52 IR Element and Catalytic Converter Parts 52 Chapter 9: Schematics and Schematic Components Schematic Parts 53 Line V
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INTRODUCTION i IMPORTANT SAFETY INSTRUCTIONS Strictly adhere to the following safety precautions to reduce the risk of: Burns Electric shock Fire Injury Damage to oven or property near oven Exposure to excessive microwave energy GENERAL SAFETY INFORMATION Read all instructions before using the appliance. Install or locate this appliance only in accordance with the provided installation instructions. Some products such as whole eggs and sealed containers (e.g., closed glass jars) may exp
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ii INTRODUCTION PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY (a) DO NOT operate or allow the oven to be operated with the door open. (b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source, and make repairs as necessary: (1) interlock operation, (2) proper door closing, (3) seal and sealing surfaces (arcing, wear, and other damage), (4) damage to or loosening of
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Installation, Specifications, and Maintenance
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INSTALLATION, SPECIFICATIONS, AND MAINTENANCE 1 FIGURE 1: NGC (Tornado) Dimensions SPECS AND DIMENSIONS Standard Features Recirculating airpath with patented catalytic converter Dimensions system EXTERIOR COOK CAVITY Multi-speed convection blower Height 19” (483 mm) 8” (203 mm) Independently-controlled bottom browning element with legs 23” (584 mm) Stackable design Width 26” (660 mm) 15.5” (394 mm) Smart Voltage Sensor Technology (North America only) Depth 25.7” (653 mm) 14.7” (373 mm) Fac
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2 INSTALLATION, SPECIFICATIONS, AND MAINTENANCE POWER INPUT NOTE: The Smart Voltage Sensor Technology does not compensate for lack of voltage or over-voltage Heaters Input Power (NA) 5990/6675 watts situations. It is the responsibility of the owner to Heaters Input Power (Intl) 6300 watts supply voltage to the unit according to the follow- Microwave Input Power 3500 watts* ing specifications. *Maximum Independent Input Power Power Supply - Europe, Asia-Pacific NGC EW (3-phase) DELIVERY AND PRODU
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INSTALLATION, SPECIFICATIONS, AND MAINTENANCE 3 (102 mm) FIGURE 2: Built-in Installation Specs FIGURE 3: Open Heat Source Installation Specs Verify oven location has a minimum 6" (152 mm) If installation must be “built in,” the operator must clearance on top and minimum 2" (51 mm) of ensure the following: clearance on each side. Minimum of 300 cfm (8.5 cmm) of supplement flow If the oven is being placed near a grill or stove, within the cabinet. there must be a divider between the oven and t
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4 INSTALLATION, SPECIFICATIONS, AND MAINTENANCE Oven Restraint Kit (TC3-0242 KIT) 8. Align the holes on the bracket with the holes The Oven Restraint Kit is an optional system that on the top oven and reinstall the screws. helps prevent the oven from moving forward during WARNING: Do not stack ovens over two- use and/or cleaning. It will not prevent the oven from high. falling off a countertop if the legs are allowed to slide off the edge or if the oven is intentionally or forcefully Programmin
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INSTALLATION, SPECIFICATIONS, AND MAINTENANCE 5 1 2 3 4 5 6 7 8 9 10 DAILY MAINTENANCE FOR THE NGC Before cleaning, check with the store for custom Step 5: Remove Particles and Spray Oven Interior ® cleaning instructions. with TurboChef Oven Cleaner Using a damp towel, remove large food particles. When cleaning the oven, use only TurboChef Oven If stubborn stain is present, sparingly spray Cleaner. Any other cleaning products can damage TurboChef Oven Cleaner onto the stain. critical parts an
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Theory of Operation
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THEORY OF OPERATION 7 THEORY OF OPERATION The TurboChef NGC (Tornado) oven utilizes Should a problem arise with any of the compo- three independent heat transfer mechanisms to nents listed below, please turn to the appropriate rapidly cook food. section within this manual for further instructions. The systems are as follows: For the purpose of this manual, each independent Convection heat transfer mechanism is individually identified. Infrared energy For instance, if an oven is experiencing
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8 THEORY OF OPERATION GLOSSARY OF COMMON OPERATING TERMS Off State º º All the oven’s control systems are off and the cook cavity temperature is below 150 F (66 C). Cool Down A subset of the OFF STATE. During COOL DOWN, the oven will circulate the main convection blower until º º the cook cavity temperature is below 150 F (66 C). Ready State The oven has successfully warmed to the predefined set temperature. At this point the oven control is ready to receive cook commands via the keypad. The ove
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THEORY OF OPERATION 9 Keypad The primary interface for the operator. Display Displays all visual information to the operator. Self-Test (STEST) A special diagnostic function that tests all critical subsystems to determine their operational state. Recipe A set of user-defined Events that determine a cook cycle. Events A single operational element that is a part of a recipe. Each recipe may have up to six events depending on programming. Each event can be set between 0 and 100% of the total cook
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Fault Codes
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FAULT CODES 11 The NGC (Tornado) oven has the ability to continually NGCVXXXX XXXXXX monitor and log various fault conditions. Some fault S/N XXXXXX conditions will terminate cook cycles, while others COOK COUNT 0 will not. Please refer to the fault code table on 0 F1 BLOWER page 12 for more detailed information. F2 LOW TEMP 0 F3 MAG CURR 0 When a fault is detected, the Fault Log will incre- F4 MONITOR 0 ment. However, if the fault is subsequently cleared F5 MAG TEMP 0 0 by some action, wheth
