Turbo Chef Technologies NGC-1007 Magnetron, High-Voltage Transformers, Filament Transformers

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28 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.

High-Voltage Transformers

High-voltage transformers are a ferro-resonant design which limits fault currents and minimizes magnetron power changes due to input voltage changes. The high-voltage transformer supplies the high voltage for the Voltage Doubler Circuit. They are controlled via the K2 relay.

W A R N I N G : Never attempt to measure

the voltage values of the high-voltage trans- formers with the high-voltage transformers enabled. Lethal voltage will be present. Reference page 30 for proper measuring technique.

Filament Transformers

For better operation and reliability, the oven uses separate transformers in order to preheat the magnetron filament.

The control energizes the filament transformers for approximately five (5) seconds prior to energizing the Microwave Circuit via the high-voltage trans- formers. When in operation, the filament trans- formers supply approximately 3.15 VAC at 10 amps to each magnetron filament. The filament trans- formers are controlled via the K1 relay.

F3 Fuse

The F3 fuse is a 20-amp, class CC fuse designed to blow in case of an over-current scenario, such as a high-voltage transformer or capacitor failure. The fuse also blows if the Monitor Circuit trips the failsafe.

High Voltage Capacitors

Capacitor rating is 0.91uF, 2500 VDC for USA, Mexico, Brazil, and S. Korea.

Capacitor rating is 1.15 uF, 2500 VDC for Europe, Asia, Pacific, Australia, UK, Ireland, and Japan 50 Hz.

Capacitor rating is 0.85 uF, 2500 VDC for Japan 60 Hz.

High Voltage Diodes

Rated at 16 kVDC.

Monitor Relay (K3)

The monitor relay, K3, acts as a failsafe device in the Voltage Doubler Circuit. In its normal un-ener- gized position, the monitor relay shorts L1 and L2. If the K2 relay energizes the high-voltage trans- formers while the K3 relay is un-energized, the F3 fuse will blow.

Magnetron Thermostats

The magnetron thermostats are open-on-rise ther- mostats. These thermostats are designed to open at 212ºF (100ºC), which triggers an F5 fault.

N O T E : Both magnetron thermostats are wired in series. If one opens, the control will switch off both magnetrons until the thermostats close. The thermostats are self-resetting.

Magnetron Cooling Fan

The magnetron cooling fan supplies cooling air for both magnetrons. The fan operates at 208 or 240 (USA) / 230 (Intl) / 200 (Japan) / 220 (Latin America) VAC and is controlled via the K7 relay (see Item 14 on Figure 20).

If the oven does not have this relay installed, it is required that you order the relay kit through Customer Service. See page 27, item 14 for part numbers. If you are unsure which kit to order, determine the software type before contacting Customer Service.

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Contents Accelerating the World of Cooking For further information call Important Safety Information Please Read First Table of Contents Microwave System Oven DoorConvection Circuit Schematics and Schematic ComponentsService Parts and Illustrations IR Element and Catalytic ConverterImportant Safety Instructions Grounding Instructions Installation, Specifications, and Maintenance Power Supply North America DimensionsStandard Features ConstructionPower Supply South Korea Power Supply Europe, Asia-PacificPower Supply Latin America Built-In Installation FigureInstallation Near Open Heat Source Figure Oven Restraint Kit TC3-0242 KIT SetupInitial Power-up StackingClean Oven Interior Remove the Lower Access PanelRemove and Clean the Cooking Surface Clean Lower Access Panel AreaTheory of Operation Chapter Actual Temperature, Cook Cavity TCC Set Temperature, Cook Cavity CcspSet Temperature, IR Element Irsp and Irsi Actual Temperature, IR Element TIRDisplay Fault CodeKeypad Self-Test StestFault Codes F3 Magnetron Current Low F2 Cook Temperature LowF1 Blower Running Status Bad F4 Door Monitor DefectiveF7 Thermocouple Open F5 Magnetron Over TemperatureThermocouple temperature is below the indicated limit F8 Heat LowControl System Mech K1 Mechanical Relay VDC Power SupplyInterlock Switches K2 Mechanical RelaySelf-Test Function Screen Faults ScreenBlower Speed Screen Heater Test ScreenChanging the Cook Chamber Temperature Diagnostic Display ScreenElectronic Compartment Temperature Screen Cooks ScreenAltering a Recipe Done Screen Snooze ModeLoading a Menu from a Smart Card Time ScreenFunction/Screen Enter Key CodeSmart Card Reader Cable Pin connector Reference page 54 for a schematic of the I/O control boardBoard J3 connector Replace I/O control board If not, correct the voltage supplyRefer to page 50 for motor controller troubleshooting VAC is going to the motor controller via pins 2Troubleshooting Detailed troubleshootingIf high-limit is not tripped, follow the instructions below Microwave System Voltage Doubler Circuit Description Microwave System Filament and High Voltage Terminals ORG Filament Transformers MagnetronHigh-Voltage Transformers F3 FuseWave Guide Cover Replacement Screws, #8, SST NGC-1047Support, Frame Wiring the High-Voltage TransformersNGC-3036Kit, Wave Guide Cover Includes Item 31 and sealant Remove the wave guide cover. See Wave GuideWiring the Filament Transformers Procedure for Measuring RF LeakageTesting the High-Voltage Diode How to Check a DiodeHow to Check a Capacitor How to Check a High-Voltage or Filament TransformerRemove the top and right side covers MagnetronComponents Back and Enter keys, enter the code 9-4-2-8 and press EnterMgtron soft key. Voltage present should be 200 +/- 10% HV capacitor shorted or failing follow troubleshooting onVoltage Transformers Unplug the oven and replace relay if necessaryOccurrence. See page 25 as well as Oven Door for Troubleshooting see F4 MonitorPrimary and secondary, the control would have recorded Energizing the Microwave SystemOven Door Oven Door Oven Burn-In Procedure Critical Adjustment Notes31 for proper procedure Primary and Secondary Interlock Switch Adjustments and Parts Assembly Notes PPHD, Cres5963 Adjusting the Primary Interlock Switch NEW Switch Setup 80 81 DIA101 98 ARCritical Adjustment Notes Figure Refer to Figures 35New setup for the proper adjustment procedure Interlock switch statusActuator and toggle OK Check adjustment and wiring on Door does not close freely Remove obstructions or readjustConvection Circuit High Limit Thermostat Main Convection HeaterMotor Controller Bmsc Convection Motor108 109 110 113 111114 105 104 103 102 107 106Cook Door Open Message Verify which switch is not actuating Replace motor. For access to motor shaft, remove top panel† Thermostat tripped Reset and determine why the thermostat Readjust. See pagesDisconnect control wiring Verify motor spins freely† Motor spins freely Verify motor windings see table below Plug on schematics pages 55-63 while incrementing blowerConverter Removing the IR Element IR ElementCatalytic Converter 119 Removing and Installing the Catalytic ConverterInstalling a New IR Element 122Schematics and Schematic Components Low Voltage Components Wire Harness Replacement P/NsLine Voltage Components Board Schematic Schematic Tornado NGC MAG Schematic Tornado Ngcew Schematic Tornado Ngced Schematic Brazil NGC Service Parts and Illustrations Control System RelayService Parts and Illustrations Microwave System Monitor Circuit Shown in Failsafe StateMicrowave System Parts Wave Guide/Wave Guide Cover PartsOven Door SBKPrimary and Secondary Interlock Switch Parts Door Switch PartsMonitor Safety Switch Parts Primary Safety Switch Parts80 81 Secondary and Monitor Safety Switch Parts 100 Oven Door PartsConvection Circuit Block Diagram Convection Circuit109 110 113 111 112 Convection Circuit Parts 114 105 104 103 102 107 108 106IR Element and Catalytic Converter Wire Harness Replacement P/N123 Old Switch Setup 126 122 119129 132 144 139 141 135 137 138 133 134150 Screw, #8-32 x 3/8, Pphd NGC-2011-8 147 150 162 157 159153 155 156 151 152 Comprehensive Part List Comprehensive Part List Comprehensive Part List Relay, K7, Magnetron Fan, Standard Europe, Asia-Pacific MPh Smart Card, Programmed call TurboChef for Part Numbers 800.90T U R B O or

NGC-1007 specifications

TurboChef Technologies has made a substantial impact in the commercial cooking industry with its advanced cooking equipment, and one of their standout products is the NGC-1007. The NGC-1007 is a revolutionary cooking oven designed to meet the demands of high-paced kitchens while ensuring superior cooking quality and efficiency.

One of the main features of the NGC-1007 is its high-speed cooking technology. Utilizing a combination of convection, impingement, and microwave cooking, this oven can reduce cooking times significantly while maintaining food quality. This multi-cooking method not only speeds up the cooking process but also enhances flavor and texture, making it ideal for cooking a wide variety of dishes, from pizzas to entrees.

The NGC-1007 also showcases advanced control technology, incorporating a user-friendly touch screen interface. This intuitive control panel allows chefs to easily navigate through various cooking settings and recipes, ensuring that each dish can be prepared to perfection. With programmable settings, operators can store favorite recipes and recall them at the touch of a button, improving efficiency and consistency in food preparation.

The design of the NGC-1007 reflects a commitment to reliability and durability. Built with high-quality materials, it can withstand the rigors of a bustling kitchen environment. Its compact size is perfect for establishments with limited space yet powerful enough to handle the demands of high-volume cooking.

Another key characteristic of the NGC-1007 is its energy efficiency. TurboChef has integrated innovative technology that reduces energy consumption without compromising cooking performance. This not only helps in cutting operational costs for restaurants but also aligns with sustainability goals by minimizing the environmental impact.

Furthermore, the NGC-1007 is equipped with easy-to-clean surfaces, making maintenance hassle-free. This is crucial in any busy kitchen, as it allows staff to focus on food preparation and service rather than extensive cleanup.

In summary, the TurboChef NGC-1007 is a game-changer for commercial kitchens looking to optimize their cooking processes. With its high-speed cooking capabilities, intuitive controls, durable construction, energy efficiency, and ease of maintenance, it stands out as a reliable option for chefs aiming to elevate their culinary output while managing time and resources effectively.
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