Turbo Chef Technologies NGC-1007 Keypad, Display, Self-Test Stest, Recipe, Events, Fault Code

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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 time.

Total Cook Time

The total duration of a recipe.

Percentage (%) Time

An event subset that specifies the duration of the event. The sum of all event time percentages for a recipe must equal 100%.

Percentage (%) Air

An event subset that specifies the relative amount of impingement airflow (speed of convection motor) dur- ing an event. Valid between 10 and 100%.

N O T E : Maximum 100% = 7100 RPM blower motor speed. Blower motor speed scale is linear.

Percentage (%) Microwave (WAV)

An event subset specifying the microwave cycle during the event. Valid between 0 and 100%. For example, if WAV is set to 30%, then microwave would be present in the cook cycle for 3 out of every 10 seconds.

Fault Code

A code assigned to an instance that the control considers to be a failure. Upon discovering a fault, the control will display the fault code and a brief description of the failure. The oven will also log faults F1 through F6 in the Fault Log. See page 11 for more detail on faults and for viewing the fault log.

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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 Area Theory 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 Critical Adjustment Notes 31 for proper procedureOven Burn-In 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 IR Element Catalytic ConverterRemoving the IR Element 119 Removing and Installing the Catalytic ConverterInstalling a New IR Element 122Schematics and Schematic Components Wire Harness Replacement P/Ns Line Voltage ComponentsLow 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 134147 150 162 157 159 153 155 156 151 152150 Screw, #8-32 x 3/8, Pphd NGC-2011-8 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