TurboChef HHB-8028 Service Manual
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TurboChef HHB-8028 Service Manual

Turbo chef speed cook oven service manual
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High h Batch Service Manual
Accelerating the World of Cooking
TM
800.90 TURBO
Part Number: HHB-8707/Revision A/June 2005

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Summary of Contents for TurboChef HHB-8028

  • Page 1 High h Batch Service Manual Accelerating the World of Cooking 800.90 TURBO Part Number: HHB-8707/Revision A/June 2005...
  • Page 3 For further information call: Customer Service at Sales & Marketing at Accelerating the World of Cooking...
  • Page 4 The information contained in this manual is important for the proper installation, use, maintenance, and repair of this oven. Follow these procedures and instructions to ensure satisfactory baking results and years of trouble-free service. Errors – descriptive, typographic, or pictorial – are subject to correction. Specifications are subject to change without notice.

  • Page 5: Table Of Contents

    Table of Contents Safety Instructions Important Safety Information – Please Read First General Safety Information Reducing Fire Risk Preventing Oven Damage Grounding Instructions Power Cord Replacement Theory of Operation, Specifications and Installation Theory of Operation Certifications Dimensions Construction Electrical Specifications North America (except Canada)/South America Canada Europe/Asia/Pacific...
  • Page 6 Programming Recipes Adjusting the Cook Chamber Temperature Modifying Recipes Loading Menu from Smart Card Saving Menu to Smart Card Checking Recipe Counter Diagnosing an Issue Fault Codes: Descriptions, Clearing Instructions, and Troubleshooting F1: BLOWER (Blower Running Status Bad) F2: LOW TEMP (Cook Temperature Low) F6: EC TEMP (Electrical Compartment Temperature High) F7: THERMO (Thermocouple Open) F8: HEAT LOW (Heat Rise Low)
  • Page 7 Rack Oscillator Motor Thermocouple – Cook Chamber Thermocouple – Electrical Compartment Thermostat – Cooling Fan Thermostat – Hi-Limit Voltage Sensor Troubleshooting No Keypad Input No Display – Screen is Blank The Oven Door Serviceable Components Door Gasket Door Hinge Door Switch Troubleshooting “Cook Door Open”...

  • Page 9: Safety Instructions

    IMPORTANT SAFET Y INF ORMATION – PLEASE READ FIRST Improper installation, adjustment, alteration, service, or maintenance of this equipment can cause property damage, injury, or death. Thoroughly read the installation, operating, and maintenance instructions before installing or servicing this equipment. Strictly adhere to the following safety information to reduce the risk of: Damage to the oven Damage to property near the oven...

  • Page 10: Preventing Oven Damage

    SAFET Y INSTRUCTIONS PREVENTING OVEN DAMAGE When servicing this appliance, do not tear insulation to get to components. Rather, find the edge of the insulation and remove the tape that holds it in place. Operate the oven only when food is in the Cook Chamber. Clean the oven daily.

  • Page 11: Theory Of Operation

    Theory of Operation, Specifications, and Installation...

  • Page 13: Certifications

    THEORY OF OPERATION The TurboChef High h Batch speed cook oven ® uses high heat transfer rates developed by force air impingement to rapidly cook food. The High h batch utilizes top and bottom Jetplates that have been optimized for specific food items. The plates can be easily removed and replaced to facilitate either higher or lower heat transfer rates.

  • Page 14: Construction

    THEORY OF OPERATION, SPECIFICATIONS AND INSTALL ATION CONSTRUCTION Exterior Stainless steel front, top, sides, and back 4 (102 mm) matte black legs Cool-to-touch coated handle Removable drain pan Removable cook door for cleaning Interior 304 stainless steel interior Drain system helps prevent debris buildup Removable Jetplates for deep cleaning ELECTRICAL SPECIFICATIONS North America (except Canada)/South America...

  • Page 15: Setup

    2. Lift from bottom of oven. 3. Place oven on surface at least 30 (762 mm) deep and capable of supporting 167 lbs (76 kg). Setup Once oven is properly positioned on the counter: 1. Remove packing material and/or foreign objects from within Cook Chamber.

  • Page 17: Operating The Oven

    Operating the Oven...

  • Page 19: Control Display And Key Identification

    : High h Batch Keypad This section contains information on: Control Display and Key Identification Powering up Powering down Cooking Instructions Cooking Options Programming Recipes Using the Options Menu CONTROL DISPL AY AND KEY IDENTIFICATION Reference Figure 2. 1. Display Displays operational information.

  • Page 20: Menu Descriptions

    OPERATING THE OVEN Menu Descriptions 1. Edit Menu Menu from which operator/technician can modify Cook Chamber temperature, recipes, and recipe settings. 2. Options Menu Menu from which operator can enable/disable various operative functions. 3. Recipe Menu (or “Menu”) Highest superset of recipes, the menu consists of 12 food groups of 6 recipes, or 72 recipes total.

  • Page 21: Cooking Options

    Press the Soft Key that corresponds to the desired food group. In this example, pressing the top right Soft Key would access all Food Items in the “1st Group”. : Selecting a Food Group Press the Soft Key corresponding to the desired food item. In this example, pressing the top right Soft Key would initiate a Cook Cycle for the “First Item”.

  • Page 22: Using The Options Menu

    OPERATING THE OVEN Press the “START” Soft Key (bottom right) to initiate a Cook Cycle. : Time Screen SAVE TIME Press the “SAVE TIME” Soft Key (bottom left) to save an adjusted time. : Done Screen USING THE OPTIONS MENU Use the Options Menu to: Enable/disable the Edit Menu Erase Recipe Menu...

  • Page 23: Enabling/Disabling The Edit Menu

    OVEN OPTIONS EDIT MENU ERASE MENU WRITE CARD Step: 1 Here the “Edit Menu” is turned on. : Enabling/Disabling the Edit Menu OVEN OPTIONS EDIT MENU ERASE MENU WRITE CARD ERASE MENU? Step: 1 After “Erase Menu” is selected, a confirmation message appears.

  • Page 24: Enabling/Disabling The Time Screen

    OPERATING THE OVEN EDIT MENU ERASE MENU WRITE CARD Step: 1 Here the “Write Card” function is turned off. : Enabling/Disabling the Write Card Function EDIT MENU ERASE MENU WRITE CARD To access the Options Menu, simultaneously press and hold for 5 seconds. : Enabling/Disabling the Time Screen Enabling/Disabling Time Screen (Figure 11) Enabling the Time Screen function allows the...

  • Page 25: Enabling/Disabling The Done Screen

    OVEN OPTIONS EDIT MENU ERASE MENU WRITE CARD Here the “Done” Screen function is turned on. To access the Options Menu, simultaneously press and hold for 5 seconds. : Enabling/Disabling the Done Screen OVEN OPTIONS EDIT MENU ERASE MENU WRITE CARD Demonstration Mode is turned off.
  • Page 26 OPERATING THE OVEN : Adjusting the Cook Chamber Temperature 1ST GROUP 2ND GROUP 3RD GROUP Step: 5 In this example, pressing the top right Soft Key would access all Food Items in the “1st Group”. : Modifying Recipes – Step 5 Adjusting the Cook Chamber Temperature (Figure 14) 1.
  • Page 27 1ST GROUP FIRST ITEM SECOND ITEM THIRD ITEM Step: 6 In this example, pressing the top right Soft Key will allow the operator to modify the first food item in the first food group. : Modifying Recipes – Step 6 <...

  • Page 28: Loading Menu From Smart Card

    OPERATING THE OVEN < 1ST GROUP> EVENT % TIME % AIR TEST Step: 8 Step: 7a Step: 7c : Modifying Recipes – Steps 7-10 7. From “Food Item” Screen (Figure 18, page 14), the operator can: a. Enter/change food group name. b.
  • Page 29 : Inserting Smart Card into Reader LOADING . . . FROM CARD Step: 3 Step: 4 : Loading from Smart Card SAVING . . . TO CARD Step: 4 Step: 5 : Saving to Smart Card OPERATING THE OVEN Smart Card Reader Slot Smart Card - Notice orientation of chip LOADING .

  • Page 30: Checking Recipe Counter

    OPERATING THE OVEN ZERO COUTNERS? Step: 1 At any point, the operator can zero out the counters for a given group. In this example, the second item (recipe) in the first group has completed one cook cycle. : Checking the Recipe Counter 2.

  • Page 31: Diagnosing An Issue

    Diagnosing an Issue...

  • Page 33: Fault Codes: Descriptions, Clearing Instructions

    this section contains To help in troubleshooting, information on Fault Codes: Descriptions, Clearing Instructions, and Troubleshooting Control Display and Key Identification Oven States and Menu Access Status Indicators Testing Options FAULT CODES: DESCRIPTIONS, CLEARING INSTRUCTIONS, AND TROUBLESHOOTING The High h Batch oven continually monitors and logs fault conditions.
  • Page 34 DIAGNOSING AN ISSUE Is the wiring harness properly connected? Check the Motor Controller, Blower Motor, and I/O Control Board. (See page 61 for schematic.) Correct the wiring or replace I/O Control Board (page 39)/Motor Controller (page 32) if damaged. Black Black Black, Red or White Motor Windings Resistance Table...
  • Page 35 Is wiring from the Door Switch to the I/O Control Board OK? (See page 61 for schematic.) Replace Door Switch. (page 36) If problem persists, replace the I/O Control Board. (page 39) Is wiring from SSR to I/O Control Board OK? (See page 61 for schematic.) Replace I/O Control...

  • Page 36: F7: Thermo (Thermocouple Open)

    DIAGNOSING AN ISSUE Location of Hi-Limit Thermostat Reset Button F6: EC TEMP (Electrical Compartment (EC) Temperature High) This fault displays if the Electrical Compartment (EC) temperature exceeds 158°F (70°C). The Control System checks the EC Thermocouple once per minute. NOTE: This fault will not terminate a Cook Cycle. To clear this fault: The EC temperature must recede below 158°F (70°C).
  • Page 37 F6: EC TEMP (Electrical Compartment (EC) Temperature High) temperature (120ºF (49ºC) or cooler)? Does the oven have room to ventilate? (not tightly enclosed by other appliances or fixtures?) Are both Cooling Fans rotating? Check for obstructions in the airflow and remove them.
  • Page 38 DIAGNOSING AN ISSUE Is the Hi-Limit Thermostat tripped? Reset and determine why it tripped – excess grease buildup, etc. (Figure 25, page 20) Troubleshooting: F8: HEAT LOW Is the Blower Motor blowing air? Is the Heater Element defective? Is the Solid State Relay Replace defective heater.

  • Page 39: Status Indicators

    Test Mode Menu, Screen 1 of 2 STATUS INDICATORS Displayed in Test and Diagnostic Modes, Status Indicators help in troubleshooting. The following oven parts are represented by letters at the bottom of the display (Figure 26). Door (represented by “D”) Backlit = OPEN Not backlit = CLOSED Heater A (represented by left “H”)

  • Page 40: Testing The Blower Motor

    DIAGNOSING AN ISSUE Step: 1/2 Airflow increases 10% each time the “BLOWER” Soft Key is pressed. Testing the Blower Motor Step: 1 In this example, test shows the oven has logged one (1) F1 Fault. Viewing the Fault Log Testing the Blower Motor (Figure 27) 1.

  • Page 41: Adjusting Temperature Offset

    Step: 1/2 In this example, the Temperature Offset is set at 20ºF (approximately 11ºC). Adjusting the Temperature Offset In this example, Heater A is on. Checking Heater A NOTE: Adjustments can be made only in Fahrenheit. (5ºF equals approximately 2.8ºC.) NOTE: At 20°F, pressing the “OFFSET”...
  • Page 42 DIAGNOSING AN ISSUE In this example, Heater B is on. Checking Heater B In this example, the Rack Oscillator is on. Testing the Rack Oscillator Step: 2 In this example, the Diagnostic Mode is enabled. If it were disabled, the screen would read “Normal Display”...

  • Page 43: Testing The Rack Oscillator

    Step: 2/3 In this example, the oven has completed 10 Cook Cycles. Press the “COOKS” Soft Key again to view the cumulative cook time. Viewing the Cook Counter/Cumulative Cook Time Testing the Rack Oscillator (Figure 32) NOTE: The Oven Rack will not oscillate if it is not properly set on the support pins.

  • Page 44: Viewing Cumulative Operating Time

    DIAGNOSING AN ISSUE Step: 2 In this example, the oven has been on for 15 hours and 30 minutes. Viewing the Cumulative Operating Time In this example, the EC Temperature is 110ºF (43ºC) Viewing the Electrical Compartment (EC) Temperature Viewing the Cumulative Operating Time (Figure 35) The High h Batch oven logs the total amount of time the oven has been on.

  • Page 45: Changing Fahrenheit/Celsius Option

    In this example, the temperature is being measured in Fahrenheit. Changing the Fahrenheit/Celsius Option Serial Number will be displayed. Viewing/Entering the Serial Number Changing the Fahrenheit/Celsius Option (Figure 37) 1. From Screen 1 of the Test Mode Menu, press the “DOWN” Key to toggle to Screen 2 of the Test Mode Menu.

  • Page 47: The Control System

    The Control System...

  • Page 49: Serviceable Components

    signals, senses, commands, and The Control System actuates the oven’s other components. For a schematic that includes all Control System compo- nents, see Figure 61, page 61. For more compre- hensive hardware descriptions, see page 69. This section contains: Serviceable Component Information and Replacement Instructions Parts and Part Numbers Troubleshooting...
  • Page 50 THE CONTROL SYSTEM Blower Motor Controller (Figure 39) The proprietary Brushless DC Blower Motor Controller actuates the Blower Motor. To replace a defective Blower Motor Controller: 1. Ensure “Cool Down” process is completed. (“Cool Down” message will disappear upon completion) and unplug the oven.

  • Page 51: Cooling Fans

    Cooling Fans (Figure 40) Located on the back of the oven, the Cooling Fans ventilate air into the Electrical Compartment (via the inlet fan), then back out (via the exhaust fan). To replace a defective fan: 1. Ensure “Cool Down” process is completed (“Cool Down”...

  • Page 52: Display

    THE CONTROL SYSTEM Display (Figure 41) To replace a defective Display: 1. Ensure “Cool Down” process is completed (“Cool Down” message will disappear upon completion) and unplug the oven. 2. Remove both side panels. 3. Remove Display Panel. NUMBER PART Display Screw –...

  • Page 53: Display Keypad

    8. Attach Display Brackets to the new Display. 9. Attach new Display to Display Panel. 10. Reinstall Display Panel and reattach side panels. Display Keypad (Figure 42) The keypad is connected to I/O Control Board via 14 Pin Flat Cable. To replace a defective keypad: 1.

  • Page 54: Door Switch

    THE CONTROL SYSTEM Door Switch (Figure 43) The Door Switch is a sensor that detects the Door Actuator and determines whether the door is open or closed. To replace a defective Door Switch: 1. Ensure “Cool Down” process is completed (“Cool Down”...

  • Page 55: Fuses

    Fuses (Figure 44) The Aux Fuses protect the Control System and Blower Motor. CAUTION: Replace fuses with only class CC fuses of the same rating. To replace a fuse: 1. Ensure “Cool Down” process is completed (“Cool Down” message will disappear upon completion) and unplug the oven.
  • Page 56 THE CONTROL SYSTEM NUMBER PART Screw – I/O Control Board (x4) Standoff – I/O Control Board (x4) I/O Control Board Solid State Relay Screw – Solid State Relay (x2) Standoff – Smart Card Reader (x4) Screw – Smart Card Reader (x4) Smart Card Reader Cable –...

  • Page 57: I/O Control Board

    Refer to the Component Plate Assembly (Figure 45) when replacing I/O Control Board Power Supply Relay Smart Card Reader Solid State Relay I/O Control Board (Figure 45) The I/O Control Board controls all aspects of oven operation. To replace a defective I/O Control Board: 1.

  • Page 58: Rack Oscillator Motor

    THE CONTROL SYSTEM Solid State Relay (SSR) (Figure 45, Page 38) The 240 VAC, Dual 40 Amp Solid State Relay actuates the Heater Element. When the SSR is actuated, the (-) control input will go to 0.00 VDC. When not actuated, the control input will read -24.00 VDC.
  • Page 59 NUMBER PART Rack Oscillator Motor Crank – Rack Oscillator Motor Screw – Rack Oscillator Motor (x2) Washer – Rack Oscillator Motor Retaining Ring – Rack Oscillator Motor Bracket – Rack Oscillator Motor Screw – Rack Oscillator Motor Bracket (x2) Removing the Rack Oscillator Motor PART NUMBER HHB-8135 HHB-8045...

  • Page 60: Thermocouple - Cook Chamber

    THE CONTROL SYSTEM Thermocouple – Cook Chamber (Figure 47) Type K Thermocouple. Thermocouple measures the temperature of the recirculating impingement airflow. If the display indicates 999ºF/C, the Thermocouple is “open,” resulting in an F7 Fault. To replace a defective CC Thermocouple: 1.

  • Page 61: Thermostat - Cooling Fan

    Thermostat – Cooling Fan (Figure 48) The Cooling Fan Thermostat actuates the cooling fans when the Electrical Compartment Temperature reaches 120°F (49°C). To replace a defective Cooling Fan Thermostat: 1. Ensure “Cool Down” process is completed (“Cool Down” message will disappear upon completion) and unplug the oven.

  • Page 62: Thermostat - Hi-Limit

    THE CONTROL SYSTEM Thermostat – Hi-Limit (Figure 49) The Hi-Limit Thermostat is a 250VAC, 3-Pole, manual-reset thermostat with a trip point of 572ºF (300°C). The Thermostat, which interrupts power to the Heater Element, should never operate during normal operation. To replace a defective Hi-Limit Thermostat: 1.

  • Page 63: Voltage Sensor

    Voltage Sensor (Figure 50) Proprietary device designed to measure incoming line voltage and distribute either 208 or 240 VAC operation. The sensor is only included in ovens operated in North and South America. To replace a defective Voltage Sensor: 1. Ensure “Cool Down” process is completed (“Cool Down”...

  • Page 64: Troubleshooting

    THE CONTROL SYSTEM TROUBLESHOOTING Replace Display Keypad. (page 35) If the problem persists, replace the I/O Control Board. (page 39) Troubleshooting: No Keypad Input Is the keypad cable properly connected to the I/O Control Board? Correct wiring.

  • Page 65: No Display - Screen Is Blank

    Is wiring from the I/O Control Board to Display OK? Is J3 Connector receiving 5 VDC? (Figure 62, page 64) Replace Display. (page 34) Troubleshooting: No Display – Screen is Blank Does the Control beep when a key is pressed? Replace Fuses.

  • Page 67: The Oven Door

    The Oven Door...

  • Page 69: Serviceable Components

    information on the Oven This section contains Door as it pertains to Serviceable Component Information and Replacement Instructions Parts and Part Numbers Troubleshooting For more comprehensive hardware descriptions, see page 69. SERVICEABLE COMPONENTS The following components of the oven door may at some point need to be replaced Door Gasket Door Hinge...
  • Page 70 THE OVEN DOOR Door Gasket (Figure 52) To remove a damaged Door Gasket: 1. Ensure “Cool Down” process is completed. (“Cool Down” message will disappear upon completion.) 2. Remove door (page 49). 3. Remove inner plate. NUMBER PART Screw – Door Inner Plate (x10) Door Inner Plate Door Gasket Removing the Door Gasket...

  • Page 71: Door Switch

    Door Hinge (Figure 53) Spring-loaded hinge can be removed and replaced as an entire unit. To replace a Door Hinge: 1. Ensure “Cool Down” process is completed. (“Cool Down” message will disappear upon completion.) 2. Remove Oven Door (page 49). 3.

  • Page 72: Troubleshooting

    THE OVEN DOOR TROUBLESHOOTING Is the Door Switch properly installed? (Ensure it is not loose or cracked.) Reset Door Switch. Ensure that this side (rather than the bracket-side) faces the oven upon reinstallation. NOTE: Some oven components have been removed for clarity. NUMBER PART Door Actuator...

  • Page 73: The Impingement Circuit

    The Impingement Circuit...

  • Page 75: Serviceable Components

    provides the high The Impingement Circuit temperature airflow necessary to brown and cook food items. For a schematic that includes all Impingement Circuit components, see Figure 61, page 61. For more comprehensive hardware descriptions, see page 69. This section contains Serviceable Component Information and Replacement Instructions Parts and Part Numbers...
  • Page 76 THE IMPINGEMENT CIRCUIT Heater Element (Figure 56) Sheathed-style/Calrod heaters. Attached to the same cartridge, Heaters A and B can be tested independently of one another. To replace a defective heater: 1. Ensure “Cool Down” process is completed (“Cool Down” message will disappear upon completion) and unplug the oven.
  • Page 77 8. Reinstall Insulation Shield. 9. Reattach Right Side Panel. Jetplates (Figure 57) The Jetplates help maximize food quality. Different Jetplates facilitate different cooking results. To replace a Jetplate: 1. Ensure “Cool Down” process is completed. (“Cool Down” message will disappear upon completion.) 2.
  • Page 78 THE IMPINGEMENT CIRCUIT Swing Arm Assembly (Figure 58) The Swing Arm Assembly is actuated by the Rack Oscillator Motor. The attached oven rack oscillates when the Swing Arm Assembly is in motion. If the rack is not oscillating properly, 1. Ensure “Cool Down” process is completed. (“Cool Down”...

  • Page 79: The Filtering System

    The Filtering System...

  • Page 81: Serviceable Components

    helps remove debris from the The filtering system Cook Chamber. However, daily maintenance and deep cleaning are still required to ensure oven functions most efficiently. For more comprehensive hardware descriptions, see page 69. This section contains Serviceable Component Information and Replacement Instructions Parts and Part Numbers SERVICEABLE COMPONENTS...
  • Page 82 THE FILTERING SYSTEM 3. Remove Jetplates (page 55). 4. Remove Air Diverter Plate. 5. Remove the Catalytic Converter. 6. Clean the Catalytic Converter with TurboChef Oven Cleaner (P/N 103180). CAUTION: DO NOT use a substitute cleaner. 7. Rinse thoroughly with distilled water. CAUTION: Use distilled water only.

  • Page 83: Cleaning The Oven

    Cleaning the Oven...

  • Page 85: Deep Clean Procedures

    DAILY MAINTENANCE The procedures below will help in maintaining the High h Batch oven. Be sure to use only TurboChef Oven Cleaner. Using any other cleaning products can damage critical parts and may void warranty on those parts. Refer to Figure 60, page 60 to view the Cook Chamber components.
  • Page 86 CLEANING THE OVEN The Cook Chamber Step 5: Check Grease Filters. Plate is attached via 4 screws. Check to see if Filters (P/N HHB-8114) need to be replaced. To order Filters, call 800.90TURBO or your Authorized Distributor. If necessary, remove Filters by first unhooking the Filter Clip (P/N HHB-8115) which is attached at the center of the Air Diverter Plate.

  • Page 87: High H Batch Schematic

    High h Batch Schematic...
  • Page 88 VFD DISPLAY 64 X 128 DOTS DOOR SWITCH 25 26 BK-22 - 25 26 OR-6 OR-6 MONITOR (NO) INTER IN OR-9 BMSC (9) (STATUS OK) BMSC SEL HX STATUS IN ASPEN OR-13 VOLT MODUAL IN RD-16 +24V PS IN RD-19 -24V PS IN BK-20 -24V P&S INTER RTN...
  • Page 90 HHB OVEN SCHEMATIC Figure 61. Inside of fold-out page. Rev 2 Board, VFD Display, Single Phase, 280/240 VAC, 60 Hz NOTE: Schematic shows the oven with door open and without power applied. Color Code (Line Voltage) BL – Blue = Line V (208/240) BR –...

  • Page 91: I/O Control Board Test Point Locations

    HIGH H BATCH SCHEMATIC I/O Control Board and Test Point Locations...

  • Page 92: Comprehensive Part Listing

    Comprehensive Part Listing...
  • Page 94 COMPREHENSIVE PART LISTING PART Air Diverter Plate Blower Motor Blower Motor Controller Blower Motor Cover Blower Motor Mounting Plate Bracket – Blower Motor Controller Bracket – Display (x2) Bracket – Rack Oscillator Motor Bushing – Swing Arm Assembly (x2) Cable – Smart Card Reader Cable Mount –...
  • Page 95 Figure 50, page 45 HHB-8099 Figure 56, page 54 HHB-8097 Figure 56, page 54 101191 Figure 53, page 51 NGC-1008 Figure 45, page 38 HHB-8041 Not labeled HHB-8028 Not labeled HHB-8029 Not labeled HHB-8085 Not labeled HHB-8155-1 Not labeled HHB-8155-2 Not labeled HHB-8156-1...
  • Page 96 PART Power Cord Mounting Bracket Power Supply Push Nut (x2) Rack Rack – Offset (Accessory) Rack Oscillator Motor Relay Retaining Ring – Rack Oscillator Motor Retaining Ring – Swing Arm Assembly Ribbon Connector – Display Screw – Air Diverter Plate (x4) Screw –...
  • Page 97 COMPREHENSIVE PART LISTING PART Screw – Side Panel (8 per panel) Screw – Smart Card Reader (x4) Screw – Solid State Relay (x2) Screw – Terminal Block (x2) Screw – Thermocouple – Cook Chamber Screw – Thermostat Clamp Screw – Thermostat – Cooling Fan (x2) Screw –...

  • Page 98: Hardware Descriptions

    HARDWARE DESCRIPTIONS PART NUMBER DESCRIPTION 100903 Nut – #10-32, Hex, Serrated, Flange, SS 100905 Nut – #1/4-20, Hex, Serrated, Flange,SS 101402 Screw – #10-32 X 1/4, PHFH 101421 Screw – #4-40 x 1/2, PHFH, 100 Deg, SS 101520 Screw – #4-40 X .25 Lg 101663 Screw –...

  • Page 100: Glossary Of Terms

    Glossary of Terms...
  • Page 102 Air Diffuser Plate Accessory plate that covers openings in the jetplate for very delicate cooking. Air Diverter Plate Covers the Catalytic Converter. Blower Motor Located in back of oven, the Blower Motor actuates the impingement process. Actuated by Blower Motor Controller. Blower Motor Controller (BMSC) Proprietary brushless DC Blower Motor Controller actuates the Blower Motor.
  • Page 103 GLOSSARY OF TERMS Diagnostic Mode Function that displays diagnostic information during all operative activities. Display Screen through which operator and oven interact. Display Keypad The primary interface for the operator. Done Screen Screen at the end of a Cook Cycle from which the operator can save an adjusted cook time or cook an item longer than its predetermined cook time.
  • Page 104 Fault Log Located in Test Mode, the Fault Log (or “Fault Code Counter”) lists each fault code and number of times oven has encountered each. The Fault Log logs up to 255 instances per fault before rolling back to zero. Filter Easy-to-remove filters help prolong the life of the Catalytic Converter by trapping excess grease.
  • Page 105 GLOSSARY OF TERMS Oven Rack See Rack Percentage (%) Air Function that allows operator/technician to specify the relative amount of impingement airflow (speed of Blower Motor) during each Cook Cycle event. Valid percentages are between 10 and 100%. NOTE: Maximum 100% = 7100 RPM Blower Motor Speed.
  • Page 106 Temperature Offset Feature that provides accurate temperature readings of where food actually cooks as opposed to where thermometer is located. Can be modified in Test Mode Menu. Test Mode Menu Menu from which technician can run diagnostics and check statistics. The oven must be in either the Off State or Cool-down State to access the Test Mode Menu.
  • Page 108 Subject Index...
  • Page 110 Air Diverter Plate Part number Removing when servicing Catalytic Converter Blower Motor Cover Description Mounting Plate (part number) Part number Replacement instructions Testing Troubleshooting – F1 Fault Blower Motor Controller (BMSC) Bracket to which attached (part number) Description Illustration Part number Replacement instructions Catalytic Converter Cleaning Instructions...
  • Page 111 SUBJECT INDEX Display Bracket (part number) Illustration Part number Replacement instructions Troubleshooting Display Keypad Description Illustration Part number Replacement instructions Troubleshooting Display Panel See Panels Done Screen Description Enabling/disabling Options Door See Oven Door Door Actuator Illustration Part number Troubleshooting: “Cook Door Open” Message when door is closed Door Gasket Illustration...
  • Page 112 Electrical Specifications Canada Europe/Asia/Pacific North America (except Canada)/ South America United Kingdom/Ireland Error Message F8 Fault Event Description Modifying Percentage Air Percentage Time Fault Code – F1: Blower Running Status Bad Clearing instructions Description Table of when Fault occurs Troubleshooting Fault Code –...
  • Page 113 SUBJECT INDEX Hardware Descriptions Heater Element Description Part number Replacement instructions Testing Heater Insulation Shield Illustration Part number Hi-Limit Thermostat See Thermostat – Hi-Limit I/O Control Board Description Illustration Part number Replacement instructions Test point locations Impingement Circuit Description Serviceable Components Installation Jetplates Accessory part numbers...
  • Page 114 Programming Recipes Adjusting the Cook Chamber Temperature Checking Recipe Counter Loading a Menu from a Smart Card Modifying Recipes Saving a Menu to a Smart Card Rack Cleaning instructions Installing Offset (Accessory) part number Part number Rack Oscillator Motor Bracket to which attached (part number) Crank (part number) Description...
  • Page 115 SUBJECT INDEX Status Indicators Description Enabling/disabling for all operative activities (via Diagnostic Mode) Illustration Swing Arm Assembly Accessing Bushing (part number) Covers (part numbers) Description Drag Link (part number) Illustration Part number Part number (with Link Bar) Washer (part number) Temperature Offset Description Modification instructions...
  • Page 117 For further information call: Customer Service at Sales and Marketing at Accelerating the World of Cooking Part Number: HHB-8707/Revision A/June 2005 Country Code: NA Headquarters Operations Six Concourse Parkway International Pkwy Suite Suite Atlanta, Georgia Carrollton, Texas Sales & Marketing Customer Service International Schoutlaan...

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