Residential single and double wall ovens (124 pages)
Summary of Contents for TurboChef NGC-1007
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F O R T H E T U R B O C H E F N G C T O R N A D O O V E N Accelerating the World of Cooking 800.90 TURBO Part Number: NGC-1007 / Revision D / September 2007...
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For further information call: 800. 9 0 T U R B O + 1 21 4. 379 . 60 00 Accelerating the World of Cooking...
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IMPORTANT SAFETY INFORMATION - PLEASE READ FIRST : Improper installation, adjustment, alteration, service, or maintenance can cause property W A R N I N G 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.
Table of Contents Important Safety Instructions General Safety Information Reducing Fire Risk Precautions to be Observed Before and During Servicing to Avoid Possible Exposure to Excessive Microwave Energy Grounding Instructions Power Cord Replacement RF Interference Considerations Chapter 1: Installation, Specifications and Maintenance Specs and Dimensions Dimensions Construction...
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Oven Options User Configurable Options - Enable/Disable Codes User Configurable Options - Access Codes Control System Panel Parts Control System Troubleshooting Chapter 5: The Microwave System Voltage Doubler Circuit Description Monitor Circuit Description Voltage Doubler Theory of Operation Microwave System Parts Microwave System Components Wave Guide Cover Replacement Wave Guide/Wave Guide Cover Parts...
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Chapter 7: The Convection Circuit Convection Circuit Components Convection Circuit/Blower Motor Parts Convection Circuit Troubleshooting Motor Winding Resistances Table Chapter 8: IR Element and Catalytic Converter Components IR Element and Catalyst Removal Removing the IR Element Removing & Installing the Catalytic Converter Installing a New IR Element IR Element and Catalytic Converter Parts Chapter 9: Schematics and Schematic Components...
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.
INTRODUCTION PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY operate or allow the oven to be operated with the door open. DO NOT 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 hinges and latches, (5) evidence of dropping or abuse.
1 : NGC (Tornado) Dimensions F I G U R E SPECS AND DIMENSIONS Dimensions E X T E R I O R Height 19” (483 mm) with legs 23” (584 mm) Width 26” (660 mm) Depth 25.7” (653 mm) with handle 28.2”...
INSTALLATION, SPECIFICATIONS, AND MAINTENANCE : The Smart Voltage Sensor Technology does N O T E not compensate for lack of voltage or over-voltage situations. It is the responsibility of the owner to supply voltage to the unit according to the follow- ing specifications.
2 : Built-in Installation Specs F I G U R E 3 : Open Heat Source Installation Specs F I G U R E If installation must be “built in,” the operator must ensure the following: Minimum of 300 cfm (8.5 cmm) of supplement flow within the cabinet.
INSTALLATION, SPECIFICATIONS, AND MAINTENANCE Oven Restraint Kit (TC3-0242 KIT) The Oven Restraint Kit is an optional system that helps prevent the oven from moving forward during use and/or cleaning. It will not prevent the oven from falling off a countertop if the legs are allowed to slide off the edge or if the oven is intentionally or forcefully pulled off.
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DAILY MAINTENANCE FOR THE NGC Before cleaning, check with the store for custom cleaning instructions. When cleaning the oven, use only TurboChef Oven Cleaner. Any other cleaning products can damage critical parts and may void warranty on those parts. Supplies and Equipment TurboChef Oven Cleaner (P/N 103180 USA, 103380 Intl), Oven Guard (P/N 103181 USA, 103381 Intl), nylon scrub pad, cleaning towel...
THEORY OF OPERATION The TurboChef NGC (Tornado) oven utilizes three independent heat transfer mechanisms to rapidly cook food. The systems are as follows: Convection Infrared energy Microwave energy By combining these mechanisms along with the ability to control each mechanism independently, the NGC (Tornado) oven is able to reduce the cook time of most foods by 70-90 percent.
THEORY OF OPERATION GLOSSARY OF COMMON OPERATING TERMS Off State All the oven’s control systems are off and the cook cavity temperature is below 150 º F (66 º C). Cool Down A subset of the . During , the oven will circulate the main convection blower until OFF STATE COOL DOWN the cook cavity temperature is below 150 º...
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THEORY OF OPERATION 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.
The NGC (Tornado) oven has the ability to continually monitor and log various fault conditions. Some fault conditions will terminate cook cycles, while others will not. Please refer to the fault code table on page 12 for more detailed information. When a fault is detected, the Fault Log will incre- ment.
FAULT CODES : Door interlock switches are in parallel. See N O T E , pages 55-63. The fault is moni- OVEN SCHEMATICS tored during a cook cycle, or in microwave is on. F5: Magnetron Over Temperature Fault is displayed when either magnetron thermo- stat is “open.”...
The Control System is comprised of the components that signal, sense, command, and switch the oven’s various components. Figure 7 shows a functional diagram of all the components that make up the Control System. MECH RELAY + 24 VDC - 24VDC POWER SUPPLY...
THE CONTROL SYSTEM CONTROL SYSTEM COMPONENT DESCRIPTIONS 24 VDC Power Supply 24 VDC output at 40 watts. Supplies control voltage for I/O control board, 24 VDC mechanical relays, and solid state relays. K1 Mechanical Relay 240 VAC, 30 Amp, Double Pole, Double Throw, 24 VDC Relay Coil.
8 : Accessing Test Mode F I G U R E To enter (Figure 8): TEST MODE 1. Press the key until the display is in the BACK STATE 2. Simultaneously press BACK 3. When prompted, enter the access code: 9-4-2-8 and press ENTER displays the software version, actu-...
THE CONTROL SYSTEM Diagnostic Display (Screen 2) key turns on or off the diagnostic display DIAG feature. When this feature is enabled, the oven will display temperature and cook cycle parameters when the oven is cooking or idle. In addition, the status indicators are displayed on the bottom of the screen.
EDIT GROUPS GROUP A GROUP E GROUP B GROUP F GROUP C GROUP G GROUP D GROUP H 1 1 : Select Group F I G U R E To change the cook cavity temperature (CCSP), press the keys. Temperature ranges DOWN vary depending on software.
THE CONTROL SYSTEM Loading a Menu from a Smart Card 1. Ensure the oven is in the mode. DOWN 2. Enable the LOAD MENU oven will return to the Off screen. 3. Remove the lower access panel (Figure 14). 4. Insert smart card into oven (Figure 14). 5.
THE CONTROL SYSTEM 1 7 : Control System Panel Enclosure and Parts F I G U R E CONTROL SYSTEM PANEL PARTS Figure 17. 1. NGC-1040 Cover, Keypad/Display, Std NGC-1209 Cover, Keypad/Display, SBK 2. 102960 Nut, 4-40, Stainless 3. 100508 Smart Card, Blank (Varies)* Smart Card, Programmed*...
CONTROL SYSTEM TROUBLESHOOTING ISSUE RESOLUTION No Display (Blank) 1. Verify power 208 VAC or 240 VAC is going to the oven correctly. 2. Control DOES NOT beep when any key on the keypad is pressed. 3. The control DOES beep when any Key on the Keypad is pressed. No Keypad Input 1.
THE CONTROL SYSTEM ISSUE F1: Blower Running Status Bad Motor not running when commanded. F3: Magnetron Current F8: Heat Rise Low : This message N O T E occurs in WARM UP if the oven fails SELF TEST to warm up in the prede- termined time period.
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ISSUE RESOLUTION F2: Cook Temperature 1. Verify the high-limit thermostat is not tripped. High-limit thermostat is not tripped. Place a small water load in a microwave/heat-resistant container (approx. 275 ml) in the oven and place the oven in MGTRON bounces substantially, there may be a noise (EMI) problem. To correct this problem, examine the wire routing for each thermocouple wire.
The Microwave System is the most complex system in the oven. Proper care must be taken during servicing to protect both the operator and technician. VOLTAGE DOUBLER CIRCUIT DESCRIPTION The Microwave System consists of a magnetron and Voltage Doubler Circuit. The Voltage Doubler Circuit consists of a special step-up transformer, a capacitor, and a diode.
THE MICROWAVE SYSTEM TRANSFORMER OUTPUT VOLTAGE +(B) +2400 V 2400 2400 Current Flow CAPACITOR CHARGES ON POSITIVE VOLTAGE SWING 1 9 : Voltage Doubler Circuit Theory of Operation F I G U R E VOLTAGE DOUBLER THEORY OF OPERATION Figure 19 1.
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2 0 : Microwave System Parts F I G U R E 13. 100481 High Voltage Diode (x2) 14. Mag Fan Relay, Generic NGC-3030-1 North America NGC-3030-4 Europe, Asia-Pacific Multiphase NGC-3030-7 Europe Single Phase NGC-3030-12 Brazil Single Phase Mag Fan Relay, SWY NGC-3030-2 North America NGC-3030-6 Europe, Brazil Single Phase NGC-3030-9 Europe, Asia-Pacific Multiphase...
THE MICROWAVE SYSTEM MICROWAVE SYSTEM COMPONENTS Below is a description of each component within the Microwave System. Magnetron Magnetrons supply the RF energy at 2.45 GHz and begin to oscillate when they are supplied with approximately 4.1KVDC at approximately .350 mA. During operation each magnetron will output a nominal 1 kW of power.
2 2 : Wave Guide Cover/Wave Guide Removal and Replacement F I G U R E To determine software type, 1. Make sure the oven is in the COOLING mode. DOWN OVEN OFF 2. Simultaneously press the BACK 3. Enter code 9-4-2-8 ( ) and press 4.
THE MICROWAVE SYSTEM 4. Using acetone, clean the oven floor where the new wave guide cover will sit. 5. Apply a 1/8” diameter bead of high temperature RTV (included with Item 29) along the outside edge of the wave guide cover flanges. : It is important to use the correct high N O T E temperature RTV as supplied by TurboChef.
high-voltage transformers are most likely wired in- phase. As a last check, energize the Microwave System and verify the voltages between the taps on each high-voltage transformer. The wiring issue must be corrected prior to returning the oven to service, as the voltages must be: : 208 VAC between 1 &...
THE MICROWAVE SYSTEM 2 4 : High Voltage Diode F I G U R E 5. While holding the MGTRON vey meter around the outline of the oven door, keeping the tip of the meter in contact with and perpendicular to the oven door. Record the highest leakage.
How to Check a Capacitor 1. Disconnect the oven from the power source. 2. Fully discharge the capacitor. 3. Isolate the capacitor from the circuit. 4. Connect the ohmmeter between the capacitor terminals. The ohmmeter should momentarily indicate a low impedance and then slowly return to infinite resistance.
THE MICROWAVE SYSTEM MICROWAVE SYSTEM TROUBLESHOOTING ISSUE Magnetron Troubleshooting Guidelines F3: Magnetron Current Low RESOLUTION : Never test the secondary voltages. Voltage on this side of the W A R N I N G circuit is lethal, reaching up to 5000 volts! All tests performed on the components are done with the oven unplugged and the capacitors discharged.
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ISSUE RESOLUTION F3: Magnetron Current Low (cont.) With the top cover removed, safe access to the three (if US oven)/two (if International oven) terminals on the NORTH AMERICA hold the INTERNATIONAL hold the JAPAN MGTRON If voltage is present on both high-voltage transformers, perform the compo- nent troubleshooting steps in the previous pages of this section.
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THE MICROWAVE SYSTEM ISSUE F3 Fuse Blown, cont. Mag 1 or Mag 2 Not Working or Food Not Cooking Evenly Magnetron Circuit is Drawing Excessive Current. High Voltage and/or Filament Transformer(s) Faulty Wave Guide Covers Broken RESOLUTION c. Monitor circuit fault: Verify operation of all interlock switches. In addition, check the Fault Log.
The proper fit and adjustment of the oven door is essential for safe and reliable operation of the NGC (Tornado) oven. The oven door provides three primary functions: 1. To protect the operator from the hot convection airflow. 2. To protect the operator from exposure to microwave energy.
THE OVEN DOOR ADJUSTING THE OVEN DOOR : Procedure should be done while W A R N I N G oven is hot. As a result, exercise extreme caution when adjusting the door. 1. Open the oven door and remove the plastic caps. 2.
27: Mis-adjusted Oven Door F I G U R E 3. Open and close the door several times to ensure it closes smoothly and the door actuator (Item 47) clears the slot in the flange. Reference Figure 29. The actuator must not hang or rub the opening or flange.
THE OVEN DOOR TOGGLE SHOULD BE LESS THAN SWITCH GAP 2 9 : Correct Primary and Secondary Interlock F I G U R E Adjustment and Parts - Old Switch Setup DOOR SWITCH ASSEMBLY AND PARTS Figure 30, next page 53.
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3 0 : Door Switch Assembly and Parts - Old Switch Setup F I G U R E 3 1 : Monitor Switch Adjustment and Assembly - F I G U R E Old Switch Setup THE OVEN DOOR...
THE OVEN DOOR 3 2 : Primary Switch Adjustment and Parts - F I G U R E New Switch Setup ADJUSTING THE PRIMARY INTERLOCK SWITCH - NEW SWITCH SETUP The new switch assembly is identifiable by the pri- mary switch being located on the left side of the oven.
3 3 : Secondary/Monitor Adjustment and Parts - F I G U R E New Switch Setup ADJUSTING THE SECONDARY AND MONITOR INTERLOCK SWITCHES - NEW SWITCH SETUP 1. Disconnect power to the unit. 2. Disconnect the 40-pin connector from the I/O board to allow maximum clearance.
THE OVEN DOOR 97 x17 3 5 : Oven Door Assembly F I G U R E OVEN DOOR ASSEMBLY See Figure 35 above. For mis-adjustments, see Figures 27 and 28 on page 39. OVEN DOOR PARTS Figure 35 84. NGC-3067* Door, NGC, Generic* NGC-3067-2* Door, NGC, SBK*...
SHUNT CAVITY/PLATE Tightening Sequence 3 6 : Oven Door Assembly: Tightening Specs F I G U R E Critical Adjustment Notes (Figure 35) 1. Orient with the gasket seam at the bottom of the door assembly. Gasket should be straight with no twists or pinching.
THE OVEN DOOR INTERLOCK SWITCH TROUBLESHOOTING ISSUE “Cook Door Open” Message RESOLUTION Determine which interlock switch is open. Access interlock switch status. M - Primary and/or secondary interlock is open (old switch setup). SM - Primary interlock is open (new switch setup). Verify action of the latch assembly and oven door.
The Convection Circuit provides the high-temperature airflow required to brown and cook food items. CONVECTION CIRCUIT COMPONENTS The following is a description of each component within the Convection Circuit and how each acts within the circuit. Figure 37 below shows a block dia- gram of the Convection Circuit.
THE CONVECTION CIRCUIT 3 8 : Convection Circuit Assembly and Parts/Item 105 (Blower Motor) Detail F I G U R E CONVECTION CIRCUIT/BLOWER MOTOR PARTS Figure 38 102. 101688 Screw, #8 x 1/2” PTH 103. NGC-1081 Cover, Motor 104. 100906 Nut, 1/4”-20, Flange 105.
CONVECTION CIRCUIT TROUBLESHOOTING ISSUE RESOLUTION F8: Heat Low 1. Check that the blower motor is moving air. Oven Not Warming Up F2: Cook Temperature 1. Verify Cook Door Operation. Blower motor is not moving air: Check blower motor assembly and verify motor is stalled. Unplug oven and correct obstruction or replace motor.
THE CONVECTION CIRCUIT ISSUE F1: Blower Running Status Bad MOTOR WINDING RESISTANCES TABLE FROM Black Black White White Black, White Green or Red RESOLUTION 1. Verify motor spins freely. Motor seized: Unplug oven and correct obstruction or replace motor. Motor spins freely: Verify motor windings (see table below). 2.
The IR Element and Catalytic Converter very different, but essential functions. The IR element provides the bottom browning - similar to a residual broiler or salamander type cooking appliance - required for cooking most food items. The IR element temperature is independently controlled in each recipe.
IR ELEMENT AND CATALYTIC CONVERTER Removing and Installing the Catalytic Converter 1. Unplug the oven. 2. Remove the IR element. (See above procedure.) 3. Once the IR element has been removed, remove the catalytic converter clip (Item 121) to access the catalytic converter.
FIGURES 40 THRU 45: NGC OVEN SCHEMATICS Figure 40 I/O Board Schematic Figure 41 NGC US Schematic Figure 42 NGC UK Schematic Figure 43 NGC EW Schematic Figure 44 NGC ED Schematic Figure 45 NGC Brazil Schematic SCHEMATIC PARTS Line Voltage Components Capacitor, High Voltage (C1) Capacitor, High Voltage (C2) Controller, Motor...
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I/O BOARD SCHEMATIC 40: I/O Control Board and Test Point Locations F I G U R E...
FIGURE 7: NGC (TORNADO) CONTROL SYSTEM Chapter 4: The Control System - Page 13 MECH RELAY + 24 VDC - 24VDC POWER SUPPLY COMMON BMSC FOR MORE DETAIL, SEE FIGURE 37 240 VAC 0-10V 3 PHASE I/O COM ENABLE I/O COM 200-240 STATUS OK VAC IN...
SERVICE PARTS AND ILLUSTRATIONS FIGURE 17: CONTROL SYSTEM PANEL ENCLOSURE AND PARTS Chapter 4: The Control System - Page 20 CONTROL SYSTEM PANEL PARTS Figure 17. 1. NGC-1040 Cover, Keypad/Display, Std NGC-1209 Cover, Keypad/Display, SBK 2. 102960 Nut, 4-40, Stainless 3.
FIGURE 18: MONITOR CIRCUIT - SHOWN IN FAILSAFE STATE Chapter 5: The Microwave System - Page 25 K2 HV RELAY F3 FUSE 20 AMP LINE VOLTAGE (BLOWN) (L1) +24 VDC K3 MONITOR RELAY LINE VOLTAGE (L2) +24 VDC FIGURE 20: MICROWAVE SYSTEM PARTS Chapter 5: The Microwave System - Page 27 11.
SERVICE PARTS AND ILLUSTRATIONS FIGURE 21: MICROWAVE SYSTEM PARTS Chapter 5: The Microwave System - Page 27 Microwave System Parts 24. 100186 Magnetron Wire 25. NGC-3015 Magnetron 26. 102070 Magnetron Thermostat 27. NGC-1163 Insulator, Adhesive 28. 100684 Screw #6 Sheet Metal FIGURE 22: WAVE GUIDE COVER/WAVE GUIDE REMOVAL AND REPLACEMENT Chapter 5: The Microwave System - Page 29 Wave Guide/Wave Guide Cover Parts...
FIGURE 24 & 25: HIGH VOLTAGE DIODE AND MAGNETRON Chapter 5: The Microwave System - Page 32 FIGURE 26: OVEN DOOR REMOVAL AND PARTS Chapter 6: The Oven Door - Page 37 Cook Door Parts 38. 102809 #8-32 x 3/8” PFH CSK 39.
SERVICE PARTS AND ILLUSTRATIONS FIGURE 29: PRIMARY AND SECONDARY INTERLOCKS ADJUSTMENT AND PARTS - OLD SWITCH SETUP Chapter 6: The Oven Door - Page 40 Primary and Secondary Interlock Switch Parts 47. NGC-1076-2 Actuator, Door 48. 102809 Screw, #8-32 x 3/8” 100Þ CSK 49.
FIGURE 31: MONITOR SWITCH ADJUSTMENT AND ASSEMBLY - OLD SWITCH SETUP Chapter 6: The Oven Door - Page 41 Monitor Safety Switch Parts 64. 102804 Hinge, Right 65. 102012 Switch, Limit, Micro 66. NGC-1126 Plate, Door Switch FIGURE 32: PRIMARY INTERLOCK ADJUSTMENT AND PARTS - NEW SWITCH SETUP Chapter 6: The Oven Door - Page 42 APPLY HI GREASE TO AREA...
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SERVICE PARTS AND ILLUSTRATIONS FIGURES 33 AND 34: SECONDARY AND MONITOR SWITCH ADJUSTMENT AND ASSEMBLY - NEW SWITCH SETUP Chapter 6: The Oven Door - Page 43 Secondary and Monitor Safety Switch Parts 77. 102804 Hinge, Right 78. 102012 Switch, Limit, Micro (x2) 79.
SERVICE PARTS AND ILLUSTRATIONS FIGURE 37: CONVECTION CIRCUIT BLOCK DIAGRAM Chapter 7: Convection Circuit - Page 47 MOTOR SPINS COUNTER-CLOCKWISE FROM BACK BLWR BOTTOM IR CONTROL WH-28 MAIN HX CONTROL WH-30 RD-19 OR540 BL510 M4 GREEN M3 WHITE 240 VAC M2 RED 3 PHASE M1 BLACK...
SERVICE PARTS AND ILLUSTRATIONS FIGURE 39: IR ELEMENT AND CATALYTIC CONVERTER PARTS AND ASSEMBLY Chapter 8: IR Element and Catalytic Converter - Page 52 IR Element and Catalytic Converter Parts 116. 101312 Snap Ring 117. 102449 Washer, Shim 118. NGC-3003 IR Element 119.
FIGURE 46: COVERS AND MISCELLANEOUS PARTS - NON-SBK OVENS Covers and Miscellaneous Parts - Non-SBK 127. NGC-1069-1 Cover, Left Side 128. NGC-1069-2 Cover, Right Side 129. NGC-1068 Cover, Top 130. 102752 Screw, #8-16 TORX HD Security 131. 101688 Screw, #8 Serrated Phillips TRHD, CRES 132.
SERVICE PARTS AND ILLUSTRATIONS FIGURE 47: COVERS AND MISCELLANEOUS PARTS - SBK OVENS Covers and Miscellaneous Parts - SBK 145. NGC-1213-1 Cover, Left Side 146. NGC-1213-2 Cover, Right Side 147. NGC-1211 Cover, Top 148. 102756 Screw, #8 x 1/2 Lg TORX HD Security 149.
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COMPREHENSIVE PART LIST ITEM DESCRIPTION Shim, 0.030 Shim, 0.045 Shim, Door Latch Shim Tool, 0.030 Shim Tool, 0.060 Shunt Plate, Door Smart Card, Blank Smart Card, Programmed (call TurboChef for Part Numbers) Varied Spacer, Aluminum, 1/2” Standoff, #8-32 F/F x 1” Standoff, #8-32, F/F x 1”, 5/16 Diameter Standoff, #8-32, M/F x 5/16”, 1/4 Diameter Stone, Baking, Fiber-Reinforced...
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For further information call: 800 .90 +1 2 14 -37 9-60 00 Accelerating the World of Cooking T U R B O Headquarters Global Operations Six Concourse Parkway 4240 International Parkway Suite 190 0 Suite 105 Atlanta, Georgia 303 28 Carrollton, Texas 75007 678 .98 7.17 00 214.
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