Instruction/ maintenance manual of the product HHB-8028 Turbo Chef Technologies
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Acceler ating the W orld of Cooking TM High h Batch Service Manual 800.
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F or further infor mation call: C ustomer Ser vice at . S ales & Mar keting at . Acceler ating the W orld of Cooking TM.
The information contained in this manual is important for the proper installation, use, maintenance, and repair of this o ven. F ollow these procedures and instructions to ensur e satisfactory baking results and years of trouble-free service. Errors – descriptive, typographic, or pictorial – ar e subject to correction.
Safety Instructions Important Safety I nformation – Please Read F irst i General Safety I nformation i Reducing F ire Risk i P reventing Oven Damage ii G rounding Instructions ii P ow er Cord R epla.
P rogramming Recipes 11 Adjusting the Cook Chamber T emperature 12 M odifying Recipes 12 Loading M enu from S mar t Card 14 Saving M enu to Smart Card 14 Checking Recipe Counter 16 Diagnosing an Issue.
Rack Oscillator M otor 40 Thermocouple – Cook Chamber 42 Thermocouple – Electrical Compartment 42 Thermostat – Cooling F an 43 Thermostat – Hi-Limit 44 V oltage Sensor 45 T roubleshooting 46 N.
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i SAFETY INSTRUCTIONS I MPORT ANT SAFETY INFORMATION – PLEASE READ FIRST Improper installation, adjustment, alteration, service, or maintenance of this equipment can cause property damage, injury , or death. Thoroughly r ead the installation, operating, and maintenance instr uctions before installing or servicing this equipment.
ii SAFETY INSTRUCTIONS P REVENTING OVEN DAMA GE o When servicing this appliance, do not tear insulation to get to components. Rather , find the edge of the insulation and remo ve the tape that holds it in place. o Operate the ov en only when food is in the Cook Chamber .
Theor y of Oper ation, Specifications, and Installation.
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1 THEORY OF OPERA TION, SPECIFICATIONS AND INS T ALL A TION T HEORY OF OPERA TION The T urboChef ® High h Batch speed cook o ven uses high heat transfer rates developed by force air impingement to rapidly cook food. The High h batch utilizes top and bottom J etplates that have been optimized for specific food items.
2 THEORY OF OPERA TION, SPECIFICATIONS AND INS T ALL A TION C ONSTRUCTION Exterior o S tainless steel front, top, sides, and back o 4 ′′ (102 mm) matte black legs o Cool-to-touch coated handle o R.
3 THEORY OF OPERA TION, SPECIFICATIONS AND INS T ALL A TION 2. Lift from bottom of ov en. 3. Place o ven on sur face at least 30 ′′ (762 mm) deep and capable of supporting 167 lbs (76 kg). Setup Once ov en is properly positioned on the counter: 1.
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Oper ating the Ov en.
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5 O PERA TING THE OVEN This section contains information on: o Contr ol Display and K ey Identification o P ow ering up o P ow ering do wn o Cooking Instructions o Cooking Options o P rogramming Recipes o U sing the Options Menu CONTROL DISPLA Y AND KEY IDENTIFICATION R efer ence F igure 2.
Menu Descriptions 1. Edit M enu M enu from which operator/technician can modify Cook Chamber temperature, recipes, and recipe settings. 2. Options M enu M enu from which operator can enable/disable various operative functions.
O PERA TING THE OVEN LEFT RIGHT : Selecting a F ood Group P ress the Soft K ey that corresponds to the desired food group. I n this example, pressing the top right Soft Key would access all F ood Items in the “1st Gr oup ” .
O PERA TING THE OVEN USING THE OPTIONS MENU U se the O ptions M enu to: o Enable/disable the Edit M enu o Erase Recipe M enu o E nable/disable the W rite Car d F unction o Enable/disable the T ime Screen o E nable/disable the Done Screen o Enable/disable Demonstration M ode T o access the Options Menu: 1.
O PERA TING THE OVEN Erasing the Recipe Menu (Figure 9) E rasing the Recipe M enu will permanently delete currently-stored r ecipes and recipe settings. T o erase the menu: 1. F rom the Options M enu, press the “ERAS E MENU” Soft Key (middle left) to erase menu.
Enabling/Disabling Time Screen (Figur e 11 ) E nabling the T ime Screen function allows the operator to adjust the T otal Cook T ime before initiating a Cook C ycle. D isabling it prevents the operator from doing so and helps ensure originally- programmed cook times remain unalter ed.
O PERA TING THE OVEN Enabling/Disabling Demonstration Mode (Figure 13) E nabling Demonstration M ode allows the operator to view/show every operational aspect of the oven without the oven actually heating up . By default, the D emonstration M ode is disabled unless otherwise requested by the customer .
O PERA TING THE OVEN Adjusting the Cook Chamber T emperature (Figure 14) 1. Ensure o ven is in either the Off State or Cool- down S tate. 2. V erify Edit M enu is enabled (for instructions see page 8). 3. Simultaneously pr ess and hold the “UP” and “DO WN” K eys for 1 second.
O PERA TING THE OVEN T o modify a food item: 1. Ensure o ven is in either the Off State or Cool- down S tate. 2. V erify Edit M enu is enabled (for instructions, see page 8). 3. S imultaneously pr ess and hold the “UP” and “DO WN” Keys for 1 second.
O PERA TING THE OVEN 7. F rom “F ood Item ” Screen (F igure 18, page 14), the operator can: a. Enter/change food group name. b . Enter/change food item name. c. S et cook time b y using the “UP” and “DO WN” Keys (5-second increments). d. Choose whether to turn rack on or off b y using the “UP” and “DO WN” Keys.
OPERA TING THE OVEN : I nser ting Smart Car d into Reader Smart Card Reader Slot Smart Card - Notice orientation of chip LOADING . . . DONE FROM CARD : Loading from S mart Card : Saving to S mar t Card SAVING .
O PERA TING THE OVEN 2. V erify W rite Car d function is enabled (for instructions, see page 9). 3. Insert S mar t Card into S mart Card Reader Orient card as sho wn in Figur e 19. 4. Pr ess the bottom left S oft Key . 5. P ress middle left Soft Key to SA VE MENU T O CARD (F igure 20).
Diagnosing an Issue.
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17 DIAGNOSING AN ISSUE T o help in troubleshooting, this section contains information on o F ault Codes: Descriptions, Clearing Instructions, and T roubleshooting o Control Display and K ey Identifica.
18 DIAGNOSING AN ISSUE T roubleshooting: F1: BLOWER (Blower Running Status Bad) NO NO YES NO YES NO YES YES NO TO FROM DESCRIPTION EXPECTED RESIST ANCE Black Red Winding (A-B) 2.0-2.6 Ohms B lack White W inding (A-C) 2.0-2.6 Ohms Red White Winding (B-C) 2.
NO NO 19 DIAGNOSING AN ISSUE T roubleshooting: F2: LOW TMP (Cook T emperature Low) YES NO Is wiring fr om the Door S witch to the I/O Control Board OK? (See page 61 for schematic.) Replace D oor S witch. (page 36) If problem persists, replace the I/O Control Board.
F6: E C TEMP (Electrical Compartment (EC) T emperature High) This fault displays if the E lectrical Compartment (EC) temperatur e ex ceeds 158°F (70°C). The Contr ol System checks the EC Thermocouple once per minute. NOTE: This fault will not terminate a Cook Cy cle.
NO 21 DIAGNOSING AN ISSUE T roubleshooting: F6: EC TEMP (Electrical Compartment (EC) T emper ature High) YES NO Does the o ven have room to ventilate? (not tightly enclosed by other appliances or fixt.
NO YES R eplace I/O Contr ol Boar d. (page 39) Correct wiring. NO YES YES 22 DIAGNOSING AN ISSUE T roubleshooting: F8: HEA T LOW YES NO Is the H i-Limit Thermostat tripped? Is the B lower M otor blowing air? YES Reset and determine why it tripped – excess grease buildup , etc.
D IAGNOSING AN ISSUE ST ATUS INDIC ATORS Displayed in T est and Diagnostic Modes, S tatus Indicators help in troubleshooting. The follo wing ov en par ts ar e r epr esented by letters at the bottom of the display (F igur e 26).
D IAGNOSING AN ISSUE T esting the Blower Motor (F ig ure 2 7) 1. F rom Screen 1 of the T est Mode M enu, press the “BLO WER” S oft Key (top left). 2. Continue pressing the “BLO WER” S oft Key (top left) to raise blower speed in 10% incr ements.
D IAGNOSING AN ISSUE NO TE: Adjustments can be made only in F ahrenheit. (5ºF equals approximately 2.8ºC.) NO TE: At 20°F , pressing the “OFFSET” Soft K ey rolls the T emperature Offset back to 0°F . 3. P ress “ENTER” to confirm. 4. When finished, press the “BACK/ST OP” Key to exit the T est Mode M enu.
D IAGNOSING AN ISSUE LEFT RIGHT : Checking Heater B Step: 1/2 Step: 3 Simultaneously press and hold for 1 second to get to the T est Mode M enu (Screen 1). NO TE: Oven must be in the O ff or Cool-down S tate. In this example, H eater B is on.
D IAGNOSING AN ISSUE T esting the R ack Oscillator (Figure 32) NO TE: The Oven Rack will not oscillate if it is not properly set on the support pins. T o test the Rack O scillator: 1. F rom Screen 1 of the T est Mode M enu, press the “RA CK OSC” Soft Key (bottom right).
D IAGNOSING AN ISSUE Viewing the Cumulative Operating Time (Figur e 35 ) The H igh h B atch oven logs the total amount of time the oven has been on. T o view this statistic: 1. F rom Screen 1 of the T est Mode M enu, pr es s the “DO WN” Key to toggle to Screen 2 of the T est Mode M enu.
D IAGNOSING AN ISSUE : V iewing/E ntering the S erial N umber L EFT RIGHT Step: 2 S erial N umber will be displayed. : Changing the F ahrenheit/Celsius Option LEFT RIGHT Step: 2 In this example, the temperature is being measured in F ahrenheit.
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The Contr ol System.
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31 THE CONTROL SYS TEM The Control System signals, senses, commands, and actuates the oven ’ s other components. F or a schematic that includes all Control System compo- nents, see F igure 61, page 61. F or more compre- hensive hardwar e descriptions, see page 69.
2 4 3 1 NUMBER P ART P ART NUMBER 1 B lo w er M otor Contr oller 100443 2 Scr e w–B lo w er M otor Contr oller (x4) 101688 3 B racket – B lo w er M otor Contr oller HHB-8111 4 Scr e w–B lo w er .
33 THE CONTROL SYS TEM Cooling F ans (Figure 40) Located on the back of the oven, the Cooling F ans ventilate air into the Electrical Compartment (via the inlet fan), then back out (via the exhaust fan).
34 THE CONTROL SYS TEM Display (Figure 41) T o replace a defective Display: 1. Ensure “Cool Do wn ” process is completed (“Cool Do wn ” message will disappear upon completion) and unplug the oven. 2. Remo ve both side panels. 3. Remo ve Display P anel.
35 THE CONTROL SYS TEM 8. Attach Display B rackets to the ne w Display . 9. Attach new Display to D isplay P anel. 10. Reinstall D isplay P anel and reattach side panels. Display K eypad (Figure 42) The keypad is connected to I/O Control Board via 14 Pin F lat Cable.
36 THE CONTROL SYS TEM Door Switch (Figure 43) The Door S witch is a sensor that detects the Door Actuator and determines whether the door is open or closed. T o replace a defective Door S witch: 1. Ensure “Cool Do wn ” process is completed (“Cool Do wn ” message will disappear upon completion) and unplug the oven.
37 THE CONTROL SYS TEM NUMBER P ART PART NUMBER 24 Screw – F use Cover 101688 25 F use Cover HHB-8136 26 F use – Class CC, 12 Amp (x2) 100592 27 F use Holder (x2) 100586 24 25 26 27 : R emoving F uses F uses (Figure 44) The Aux F uses protect the Control System and Blo wer M otor .
38 THE CONTROL SYS TEM NUMBER P ART P ART NUMBER 28 Scr e w– I/O Contr ol Boar d (x4) 102910 29 S tandoff – I/O Contr ol Boar d (x4) 101951 30 I/O Contr ol Boar d NGC-1008 31 S olid S tate R elay .
39 THE CONTROL SYS TEM Refer to the Component Plate Assembly (F igure 45) when replacing o I/O Control Board o P ow er S upply o Relay o S mart Card Reader o Solid S tate Relay I/O Control Board (Figure 45) The I/O Control Board contr ols all aspects of ov en operation.
40 THE CONTROL SYS TEM Solid State Relay (SSR) (Figure 45, P age 38) The 240 V AC, D ual 40 Amp Solid S tate Relay actuates the Heater E lement. When the SSR is actuated, the (-) control input will go to 0.00 VDC. When not actuated, the control input will read -24.
41 THE CONTROL SYS TEM NUMBER P ART P ART NUMBER 41 Rack O scillator M otor HHB-8135 42 C rank – Rack O scillator M otor HHB-8045 43 Scr e w– Rack O scillator M otor (x2) 101672 44 W asher – Rac.
42 THE CONTROL SYS TEM Thermocouple – Cook Chamber (Figure 47) T ype K Thermocouple. Thermocouple measures the temperature of the recir culating impingement airflow . If the display indicates 999ºF/C, the Thermocouple is “ open,” resulting in an F7 F ault.
43 THE CONTROL SYS TEM Thermostat – Cooling F an (Figure 48) The Cooling F an Thermostat actuates the cooling fans when the Electrical Compartment T emperature reaches 120° F ( 49°C ).
44 THE CONTROL SYS TEM Thermostat – Hi-Limit (Figure 49) The Hi-Limit Thermostat is a 250V AC, 3-P ole, manual-reset thermostat with a trip point of 572ºF (300°C). The Thermostat, which interrupts power to the Heater E lement, should never operate during normal operation.
45 THE CONTROL SYS TEM V oltage Sensor (Figure 50) P roprietar y device designed to measure incoming line voltage and distribute either 208 or 240 V AC operation. The sensor is only included in ovens operated in N or th and South America. T o replace a defective V oltage Sensor: 1.
46 THE CONTROL SYS TEM T ROUBLESHOOTING T roubleshooting: No Ke ypad Input YES NO Replace Display Keypad. (page 35) I f the pr oblem persists, replace the I/O Control Board. (page 39) Is the keypad cable pr operly connected to the I/O Control Board? Correct wiring.
47 THE CONTROL SYS TEM NO T roubleshooting: No Display – Screen is Blank YES NO Does the Control beep when a key is pressed? I s wiring from the I/O Contr ol Boar d to Display OK? I s J3 Connector receiving 5 VDC? (F igur e 62, page 64) NO YES YES Replace D isplay .
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The Oven Door.
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49 NUMBER P ART P ART NUMBER 62 D oor HHB-8080-2 : Remo ving the Oven Door 62 Rotate Hinge Retainer forward to unlocked position THE OVEN DOOR This section contains informatio.
50 THE OVEN DOOR Door Gasket (Figure 52) T o remove a damaged D oor Gasket: 1. E nsure “Cool Do wn ” process is completed. (“Cool Do wn ” message will disappear upon completion.) 2. Remo ve door (page 49). 3. Remo ve inner plate. 4. Replace damaged gasket with P/N HHB-8101.
51 THE OVEN DOOR NUMBER P ART PART NUMBER 66 Door H inge 102807 67 P ush Nut (x2) 101293 68 Hole P lug (x2) 101191 69 Screw – Door H inge (1 per hinge =2 total) 101402 : Replacing a H inge 69 68 67 66 Door Hinge (Figure 53) S pring-loaded hinge can be remo ved and replaced as an entire unit.
52 T roubleshooting: “Cook Door Open” Message when Door is Closed YES NO Is wiring fr om Door S witch to I/O Control Board OK? T ROUBLESHOOTING 52 THE OVEN DOOR Correct wiring. If wiring is damaged, replace the Door S witch (page 36). Is the D oor Switch properly installed? (Ensure it is not loose or cracked.
The Impingement Cir cuit.
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53 THE IMPINGEMENT CIRCUIT The Impingement Circuit pro vides the high temperature airflow necessary to brown and cook food items. F or a schematic that includes all Impingement Circuit components, see F igure 61, page 61. F or more comprehensive hardwar e descriptions, see page 69.
54 THE IMPINGEMENT CIRCUIT Heater Element (Figure 56) Sheathed-style/Calrod heaters. A ttached to the same cartridge, Heaters A and B can be tested independently of one another . T o replace a defective heater: 1. Ensure “Cool Do wn ” process is completed (“Cool Do wn ” message will disappear upon completion) and unplug the oven.
55 THE IMPINGEMENT CIRCUIT 8. Reinstall I nsulation Shield. 9. Reattach Right S ide P anel. Jetplates (Figure 57) The J etplates help maximize food quality . Different J etplates facilitate different cooking results. T o replace a J etplate: 1. E nsure “Cool Do wn ” process is completed.
Swing Arm Assembly (Figure 58) The S wing Arm Assembly is actuated by the Rack Oscillator M otor . The attached oven rack oscillates when the S wing Arm Assembly is in motion. If the rack is not oscillating properly , 1. E nsure “Cool Do wn ” process is completed.
The Filtering System.
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THE FIL TERING SYSTEM 57 The filtering system helps remo ve debris from the Cook Chamber . H owever , daily maintenance and deep cleaning are still requir ed to ensure oven functions most efficiently . F or more comprehensive hardwar e descriptions, see page 69.
58 THE FIL TERING SYSTEM 3. Remo ve Jetplates (page 55). 4. Remo ve Air Diverter Plate. 5. Remo ve the Catalytic Converter . 6. Clean the Catalytic Converter with T urboChef Oven Cleaner (P/N 103180). CAUTION: DO NO T use a substitute cleaner . 7. Rinse thoroughly with distilled water .
Cleaning the Oven.
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CLEANING THE OVEN D AIL Y MAINTENANCE The procedures belo w will help in maintaining the High h B atch oven. Be sure to use only T urboChef Oven Cleaner . U sing any other cleaning products can damage critical parts and may void warranty on those parts.
C LEANING THE OVEN Step 5: Check Gr ease Filters. o Plate is attached via 4 screws. o Check to see if F ilters (P/N HHB-8114) need to be r eplaced. T o or der Filters, call 800.
High h Batch Schematic.
61 HIGH H BA TCH SCHEMATIC : High h B atch Schematic BL 3 BR 4 GY 1 G Y 2 BR 4 BL 3 BR 6 B R 5 BL 8 BL 7 BR 13 BL 17 B L 9 BR 10 BR 12 BR 11 B R 14 BL 16 BL 15 1 1 2 2 3 3 4 4.
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63 HIGH H BA TCH SCHEMATIC H HB OVEN SCHEMA TIC F igure 61. Inside of fold-out page. Rev 2 Boar d, VFD Display , Single P hase, 280/240 V AC, 60 Hz NO TE: Schematic shows the oven with door open and without power applied.
64 HIGH H BA TCH SCHEMATIC : I/O Control Board and T est P oint Locations RJ11 RJ11 J2 J6 BR1 J4 + U15 R51 D6 P1 P3 J3 SKP1.
Comprehensiv e P ar t Listing.
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65 COMPREHENSIVE P ART LISTING P ART PART NUMBER ILLUSTRA TION Air Diverter Plate HHB-8030 F igure 59, page 57 Blow er Motor HHB-8106 F igure 55, page 53 Blow er Motor Controller 100443 Figur e 39, pa.
P ART P ART NUMBER ILLUSTRA TION Electrical Plate HHB-8134 F igure 50, page 45 F ilter (x2) HHB-8114 F igure 59, page 57 F ilter Clip (x2) HHB-8115 F igure 59, page 57 Fuse – Class CC, 12 AMP (x2) 1.
67 COMPREHENSIVE P ART LISTING P ART P ART NUMBER ILLUSTRA TION P ower Cor d Mounting Bracket NGC-1167 N ot labeled P ower S upply 101206 F igure 45, page 38 P ush Nut (x2) 101293 F igure 53, page 51 .
P ART P ART NUMBER ILLUSTRA TION S crew – Side P anel (8 per panel) 101688 Figure 41, page 34 Screw – S mart Card Reader (x4) 102911 F igure 45, page 38 Screw – Solid S tate Relay (x2) 101688 F .
69 COMPREHENSIVE P ART LISTING P ART NUMBER DESCRIPTION 100903 N ut – #10-32, Hex, Serrated, Flange, SS 100905 N ut – #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 .
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Glossar y of T erms.
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71 GLOSSARY OF TERMS Air Dif fuser Plate Accessory plate that covers openings in the jetplate for very delicate cooking. Air Diverter Plate Covers the Catalytic Conv er ter . Blower Motor Located in back of oven, the B lower M otor actuates the impingement process.
72 GLOSSARY OF TERMS Diagnostic Mode F unction that displays diagnostic information during all operative activities. Display Screen through which operator and o ven interact.
73 GLOSSARY OF TERMS F ault Log Located in T est Mode, the F ault Log (or “F ault Code Counter”) lists each fault code and number of times oven has encounter ed each.
74 GLOSSARY OF TERMS Oven Rack See Rack Percentage (%) Air F unction that allows operator/technician to specify the relative amount of impingement airflow (speed of Blo wer M otor) during each Cook Cycle ev ent. V alid percentages are between 10 and 100%.
75 GLOSSARY OF TERMS T emperature Offset F eature that provides accurate temperatur e readings of where food actually cooks as opposed to where thermometer is located. Can be modified in T est M ode M enu. T est Mode Menu M enu from which technician can run diagnostics and check statistics.
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Subject Inde x.
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77 SUBJECT INDEX Air Diverter Plate P art number 57, 65 Remo ving when ser vicing Catalytic Converter 57-58 Blower Motor Cover 53 Description 53 M ounting Plate (part number) 65 P art number 53, 65 R .
78 SUBJECT INDEX Display Bracket (part number) 34, 65 Illustration 34 P art number 34, 65 Replacement instructions 34 T roubleshooting 34 Display K eypad Description 35 Illustration 35 P ar t number 3.
79 SUBJECT INDEX Electrical Specifications Canada 2 Eur ope/Asia/P acific 2 N or th America (except Canada)/ South America 2 U nited Kingdom/Ireland 2 Error Message F8 F ault 20 E vent Description 14 .
80 SUBJECT INDEX Hardware Descriptions 69 Heater Element Description 54 P art number 54, 66 Replacement instructions 54 T esting 25 Heater Insulation Shield Illustration 54 P ar t number 54, 66 Hi-Lim.
81 SUBJECT INDEX Programming Recipes Adjusting the Cook Chamber T emperature 12 Checking Recipe Counter 16 Loading a M enu from a S mar t Card 14 M odifying Recipes 12-14 Saving a M enu to a Smart Car.
SUBJECT INDEX Status Indicators Description 23 Enabling/disabling for all operative activities (via Diagnostic M ode) 27 Illustration 23 Swing Arm Assembly Accessing 56 Bushing (part number) 56, 65 Co.
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F or further infor mation call: C ustomer Ser vice at . Sales and M arketing at . P ar t N umber: HHB-8707/R evision A/J une 2005 Country Code: NA Acceler ating the W or ld of Cooking TM H eadquar ters Six Concourse P arkway S uite Atlanta, Georgia .
An important point after buying a device Turbo Chef Technologies HHB-8028 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Turbo Chef Technologies HHB-8028 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Turbo Chef Technologies HHB-8028 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Turbo Chef Technologies HHB-8028 you will learn all the available features of the product, as well as information on its operation. The information that you get Turbo Chef Technologies HHB-8028 will certainly help you make a decision on the purchase.
If you already are a holder of Turbo Chef Technologies HHB-8028, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Turbo Chef Technologies HHB-8028.
However, one of the most important roles played by the user manual is to help in solving problems with Turbo Chef Technologies HHB-8028. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Turbo Chef Technologies HHB-8028 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
