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Turbo Chef Technologies HHB-8028 - page 1
Acceler ating the W orld of Cooking TM High h Batch Service Manual 800.90 TURBO P art Number: HHB-8707/R evision A/June 2005 ...
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Turbo Chef Technologies HHB-8028 - page 2
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Turbo Chef Technologies HHB-8028 - page 3
F or further infor mation call: C ustomer Ser vice at . S ales & Mar keting at . Acceler ating the W orld of Cooking TM ...
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Turbo Chef Technologies HHB-8028 - page 4
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. Specifications are subjec ...
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Turbo Chef Technologies HHB-8028 - page 5
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 eplacement ii Theory of Operation, Specifications and Installation Theory of Operation 1 Certifications 1 Dimensions 1 Construction 2 E lectrical S pecifi ...
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Turbo Chef Technologies HHB-8028 - page 6
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 F ault Codes: Descriptions, Clearing Instructions, 17 and T roubleshooting F1: BLO WER (B lower Running S tatus Bad) 17 F2: LO W TEMP (Cook T emperat ...
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Turbo Chef Technologies HHB-8028 - page 7
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 o Keypad Input 46 N o Display – Screen is Blank 47 The Oven Door Serviceable Components 49 Door Gasket 50 D oor Hinge 51 Door S witch 51 T roublesh ...
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Turbo Chef Technologies HHB-8028 - page 8
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Turbo Chef Technologies HHB-8028 - page 9
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. Strictly adhere t ...
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Turbo Chef Technologies HHB-8028 - page 10
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 . o Clean the oven daily . o Clean the oven only with T urboChef Ov en Cleaner . ...
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Turbo Chef Technologies HHB-8028 - page 11
Theor y of Oper ation, Specifications, and Installation ...
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Turbo Chef Technologies HHB-8028 - page 13
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. The plates can be easily remo v ...
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Turbo Chef Technologies HHB-8028 - page 14
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 Remo vable drain pan o Remo vable cook door for cleaning Interior o 304 stainless steel interior o Drain system helps prev ent debris buildup o Remo va ...
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Turbo Chef Technologies HHB-8028 - page 15
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. Remo ve packing material and/or foreign objects from within Cook Chamber . 2. Install Oven Rack by ...
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Turbo Chef Technologies HHB-8028 - page 16
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Turbo Chef Technologies HHB-8028 - page 17
Oper ating the Ov en ...
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Turbo Chef Technologies HHB-8028 - page 19
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. 1. Display Displays operational information. 2. S oft k e ...
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Turbo Chef Technologies HHB-8028 - page 20
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. 3. Recipe M enu (or “Menu ”) H ighest superset of recipes, the menu consists of 12 food groups of 6 recipes, or 72 r ec ...
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Turbo Chef Technologies HHB-8028 - page 21
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 ” . NO TE: P ress the “DO WN” Key to view F ood Gr oups 7-12. L EFT R IGHT ...
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Turbo Chef Technologies HHB-8028 - page 22
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. E nsur e the o v en is in either Cool-do wn ...
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Turbo Chef Technologies HHB-8028 - page 23
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. 2. P r ess the “ENTER” Key to confirm or the “BACK/ST OP” Key to cancel. 3. ...
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Turbo Chef Technologies HHB-8028 - page 24
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. By default, the T ime Screen is enabled unless other wise r eque ...
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Turbo Chef Technologies HHB-8028 - page 25
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 . T o enable/disable D emonstration M ode: 1. F ...
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Turbo Chef Technologies HHB-8028 - page 26
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. 4. Adjust Cook T emperature in 25°F (15ºC) incre- ments by usin ...
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Turbo Chef Technologies HHB-8028 - page 27
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. 4. Adjust the cook temperature in 25°F (15°C) increments by using “UP” and “DO WN” ...
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Turbo Chef Technologies HHB-8028 - page 28
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. e. Specify E vent ...
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Turbo Chef Technologies HHB-8028 - page 29
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 . . .DONE TO CARD LEFT R IGHT L OADING . . . FROM CARD S tep: 3 ...
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Turbo Chef Technologies HHB-8028 - page 30
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). 6. P r ess the “ENTER” Key to confirm or the “BACK/ST OP? ...
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Turbo Chef Technologies HHB-8028 - page 31
Diagnosing an Issue ...
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Turbo Chef Technologies HHB-8028 - page 33
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 Identification o Oven S tates and Menu Access o S tatus Indicators o T esting Options F AUL T CODES: DESCRIPTIONS, CLEARING INS TRUCTIONS, AND TROUBLESHOOTING T ...
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Turbo Chef Technologies HHB-8028 - page 34
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) 2.0-2.6 Ohms Black, R ed or White G reen Windings to Chassis Open : M o ...
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Turbo Chef Technologies HHB-8028 - page 35
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. (page 39) Does the D isplay read “Cook Door Open ” when the door is closed? YES ...
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Turbo Chef Technologies HHB-8028 - page 36
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. T o clear this fault: The EC temperature must recede belo w 158°F (70°C). T r ...
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Turbo Chef Technologies HHB-8028 - page 37
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 fixtures?) Is the o ven in an area of moderate temperature (120ºF (49ºC) or cooler)? YES Ar e both Cooling F ans rotating? NO Relocate o ven to cooler a ...
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Turbo Chef Technologies HHB-8028 - page 38
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. (F igur e 25, page 20) NO See page 17 to troubleshoot F1: BL O WER (Bl ...
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Turbo Chef Technologies HHB-8028 - page 39
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). Door (represented by “D”) Backlit = OP EN N ot backlit = CLOSED Heater A (represented by left “H”) Backlit = OFF N ...
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Turbo Chef Technologies HHB-8028 - page 40
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. 3. When finished, press the “BACK/ST OP” Key to end the test and exit the T est M ode M enu. ...
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Turbo Chef Technologies HHB-8028 - page 41
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. Checking Heaters A and B (Fig ...
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Turbo Chef Technologies HHB-8028 - page 42
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. : T esting the Rack Oscillator L EFT RIGHT S tep: 1/2 Ste ...
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Turbo Chef Technologies HHB-8028 - page 43
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). 2. When finished testing, press the “RA CK OSC” Soft Key (bottom right) ...
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Turbo Chef Technologies HHB-8028 - page 44
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. 2. P ress the “ACCUM” Soft Key (bottom left) to view c ...
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Turbo Chef Technologies HHB-8028 - page 45
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. Step: 3 S imultaneously press and hold for 1 second to ...
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Turbo Chef Technologies HHB-8028 - page 46
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Turbo Chef Technologies HHB-8028 - page 47
The Contr ol System ...
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Turbo Chef Technologies HHB-8028 - page 48
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Turbo Chef Technologies HHB-8028 - page 49
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. This section contains: o Serviceable Component Information and Replacement I nstruc ...
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Turbo Chef Technologies HHB-8028 - page 50
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 M otor Contr oller Bracket (x4) 101688 32 THE CONTROL SYS TEM Blower Motor Controller (Figure 39) The proprietary Brushless DC Blower M otor Controlle ...
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Turbo Chef Technologies HHB-8028 - page 51
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). T o replace a defective fan: 1. Ensure “Cool Do wn ” process is completed (“Cool Do wn ” message will disappear upon completion) and unplu ...
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Turbo Chef Technologies HHB-8028 - page 52
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. 4. If ribbon cable is damaged, replace w ith P /N 103024 (not pictured) and jump to step ...
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Turbo Chef Technologies HHB-8028 - page 53
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. T o replace a defective keypad: 1. Ensure “Cool Do wn ” process is completed ( ...
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Turbo Chef Technologies HHB-8028 - page 54
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. 2. Remo ve both side pane ...
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Turbo Chef Technologies HHB-8028 - page 55
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 . CAUTION: R eplace fuses with only clas ...
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Turbo Chef Technologies HHB-8028 - page 56
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 101286 32 Scr e w–S olid State R elay (x2) 101688 33 S tandoff – S mar t Car d Reader (x4) 101947 34 Scr e w–S mart Card R eader (x4) 102911 35 ...
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Turbo Chef Technologies HHB-8028 - page 57
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. T o replace a defective I/O Control Boar d: 1. Ensure “Cool Do wn ” process ...
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Turbo Chef Technologies HHB-8028 - page 58
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 -24.00 VDC. T o replace a defective SSR: 1. Ensure “Cool Do wn ” process is completed ...
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Turbo Chef Technologies HHB-8028 - page 59
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 – Rack O scillator M otor 102451 45 R etaining Ring – Rack O scillator M otor 101297 46 B racket – Rack O scillator M otor HHB-8049 47 Scr e w– Rack ...
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Turbo Chef Technologies HHB-8028 - page 60
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. T o replace a defective CC Thermocouple: 1. Ensure “Cool Do wn ” process is comple ...
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Turbo Chef Technologies HHB-8028 - page 61
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 ). T o replace a defective Cooling F an Thermostat: 1. Ensure “Cool Do wn ” process is completed (“Cool Do wn ” message will disappear upon completion) and ...
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Turbo Chef Technologies HHB-8028 - page 62
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. T o replace a defective H i-Limit Thermostat: 1. Ensure “Cool Do wn ” ...
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Turbo Chef Technologies HHB-8028 - page 63
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. Ensure “Cool Do wn ” process is completed (“Cool Do wn ” me ...
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Turbo Chef Technologies HHB-8028 - page 64
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. ...
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Turbo Chef Technologies HHB-8028 - page 65
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 . (page 34) NO NO YES I s the P o wer S upply output correct VDC? (see page 2 for e ...
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Turbo Chef Technologies HHB-8028 - page 66
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Turbo Chef Technologies HHB-8028 - page 67
The Oven Door ...
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Turbo Chef Technologies HHB-8028 - page 68
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Turbo Chef Technologies HHB-8028 - page 69
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 information on the Oven Door as it pertains to o Serviceable Component Information and Replacement I nstructions o P arts and P ar t N umbers o T roubleshooting ...
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Turbo Chef Technologies HHB-8028 - page 70
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. 5. Reinstall inner plate. 6. Reattach o ven door . 7. Return hinge ...
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Turbo Chef Technologies HHB-8028 - page 71
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. T o replace a Door H inge: 1. ...
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Turbo Chef Technologies HHB-8028 - page 72
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.) YES NO R eset D oor S witch. Repla ...
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Turbo Chef Technologies HHB-8028 - page 73
The Impingement Cir cuit ...
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Turbo Chef Technologies HHB-8028 - page 74
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Turbo Chef Technologies HHB-8028 - page 75
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. This section contains o Serviceable Component Information and Repla ...
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Turbo Chef Technologies HHB-8028 - page 76
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. 2. Remo ve ...
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Turbo Chef Technologies HHB-8028 - page 77
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. (“Cool Do wn ” message will disappear upon completion ...
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Turbo Chef Technologies HHB-8028 - page 78
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. (“Cool Do wn ” message will disappear upon completion.) 2. Ensure r ecipe set ...
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Turbo Chef Technologies HHB-8028 - page 79
The Filtering System ...
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Turbo Chef Technologies HHB-8028 - page 80
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Turbo Chef Technologies HHB-8028 - page 81
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. This section contains o Serviceable Component Information and Replacement I nstructions ...
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Turbo Chef Technologies HHB-8028 - page 82
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 . CAUTION: U se distilled water only . 8. Let the Catalytic Conv ...
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Turbo Chef Technologies HHB-8028 - page 83
Cleaning the Oven ...
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Turbo Chef Technologies HHB-8028 - page 84
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Turbo Chef Technologies HHB-8028 - page 85
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. Refer to F igure 60, page 60 to view the Cook Chamber components. Supplies and Equipment o T urb ...
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Turbo Chef Technologies HHB-8028 - page 86
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 800.90TURBO or y our A uthorized Distributor . o I f necessar y , r emove F ilters by first unhooking the F ilter Clip (P/N HHB-8115) which is attached at the center of the Air ...
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Turbo Chef Technologies HHB-8028 - page 87
High h Batch Schematic ...
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Turbo Chef Technologies HHB-8028 - page 88
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 BL 18 BR 19 BR 20 BR 21 BL 22 BL 24 BL 23 BL 28 BL 27 BL 25 BL 26 C2/C3 BR 29 F1 F2 F1: 12 AMPS CLASS CC (100595) F2: 12 AMPS CLASS CC (100595) RD-19 ...
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Turbo Chef Technologies HHB-8028 - page 89
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Turbo Chef Technologies HHB-8028 - page 90
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. Color Code (Line V oltage) BL – Blue = Line V (208/240) BR – Bro wn = Line V (208/240) OR – Orange = 240 Line Input for T ...
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Turbo Chef Technologies HHB-8028 - page 91
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 ...
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Turbo Chef Technologies HHB-8028 - page 92
Comprehensiv e P ar t Listing ...
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Turbo Chef Technologies HHB-8028 - page 93
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Turbo Chef Technologies HHB-8028 - page 94
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, page 32 Blow er Motor Cover NGC-1081 F igure 55, page 53 Blow er Motor Mounting P late HHB-8009 N ot labeled Bracket – Blo wer Motor Controller HHB-81 ...
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Turbo Chef Technologies HHB-8028 - page 95
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) 100592 Figur e 44, page 37 Fuse Co ver HHB-8136 F igure 44, page 37 Fuse H older (x2) 100586 F igure 44, page 37 Gr ommet – Electrical Plate 100644 F ...
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Turbo Chef Technologies HHB-8028 - page 96
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 Rack HHB-8104 Figure 57, page 55 Rack – Offset (Accessory) HHB-8118 Not labeled Rack Oscillator M otor HHB-8135 F igure 46, page 41 Relay 101273 F i ...
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Turbo Chef Technologies HHB-8028 - page 97
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 igure 45, page 38 Screw – T erminal Block (x2) 102963 N ot labeled Screw – Thermocouple – Cook Chamber 101688 F igure 47, page 42 Screw – Ther ...
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Turbo Chef Technologies HHB-8028 - page 98
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 .25 Lg 101663 Screw – #8, T ype A X 2-1/4, PHFH, Sheet M etal, SS 101672 Screw – ...
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Turbo Chef Technologies HHB-8028 - page 99
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Turbo Chef Technologies HHB-8028 - page 100
Glossar y of T erms ...
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Turbo Chef Technologies HHB-8028 - page 101
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Turbo Chef Technologies HHB-8028 - page 102
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. Actuated b y B lower M otor Controller . Blower Motor Controller (BMSC) P roprietary ...
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Turbo Chef Technologies HHB-8028 - page 103
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. Display K eypad The primary inter face for the operator . Done S creen Screen at the end of a Cook C ycle from which the operator can save an adjusted cook time or cook an ite ...
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Turbo Chef Technologies HHB-8028 - page 104
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. The F ault Log logs up to 255 instances per fault before rolling back to zero . Filter Easy-to-remo ve filters help prolong the life of the Catalytic Converter by trapping excess ...
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Turbo Chef Technologies HHB-8028 - page 105
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%. NO TE: Maximum 100% = 7100 RPM Blow er M otor S peed. Blower M otor Speed scale is linear . Pe ...
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Turbo Chef Technologies HHB-8028 - page 106
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. The oven must be in either the Off S tate or Cool-down Sta ...
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Turbo Chef Technologies HHB-8028 - page 107
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Turbo Chef Technologies HHB-8028 - page 108
Subject Inde x ...
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Turbo Chef Technologies HHB-8028 - page 109
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Turbo Chef Technologies HHB-8028 - page 110
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 eplacement instructions 53 T esting 24 T roubleshooting – F1 F ault 17 Blower Motor Controller (BMSC) Bracket to which attached (part number) 32, 65 ...
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Turbo Chef Technologies HHB-8028 - page 111
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 35, 65 Replacement instructions 35 T roubleshooting 46 Display Panel See P anels Done Screen D escription 7 Enabling/disabling 10 Options 7 Door See Ov ...
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Turbo Chef Technologies HHB-8028 - page 112
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 M odifying 12-14 P ercentage Air 14 P ercentage T ime 14 F ault Code – F1: Blower Running Status Bad Clearing instructions 17 D escription 17 T able ...
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Turbo Chef Technologies HHB-8028 - page 113
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-Limit Thermostat S ee Thermostat – Hi-Limit I/O Control Board Description 39 Illustration 38, 64 P ar t number 38, 66 Replacement instructions 39 T est ...
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Turbo Chef Technologies HHB-8028 - page 114
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 Card 14 Rack Cleaning instructions 59-60 I nstalling 3 Offset (Accessory) part number 67 P art number 55, 67 Rack Oscillator Motor Bracket to which attac ...
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Turbo Chef Technologies HHB-8028 - page 115
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 Covers (part numbers) 65 D escription 56 Drag Link (part number) 56, 65 Illustration 56 P ar t number 56, 68 P art number (with Link Bar) 56, 68 W asher ...
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Turbo Chef Technologies HHB-8028 - page 116
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Turbo Chef Technologies HHB-8028 - page 117
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 .? ...
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