TurboChef Residential Single and Double Wall Oven User manual

Accelerating the World of Cooking TM
Service Manual
  ®     
©2008 TurboChef Technologies, Inc.
TM

For further information, call
866.447.3783
or
+1 214.379.6000

e information contained in this manual is important for the proper installation, use, maintenance, and re-
pair of this oven. Follow these procedures and instructions to help 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.
PLEASE CAREFULLY READ THIS MANUAL AND RETAIN IT FOR FUTURE REFERENCE.
©2008 TurboChef Technologies, Inc.

Table Of Contents
Safety Instructions
Safety Precautions i
To Reduce the Risk of Fire in the Cook Cavity ii
Precautions to be Observed Before and During Servicing to Avoid Possible
Exposure to Excessive Microwave Energy ii
Grounding Instructions ii
Do Not Touch Heating Elements or Interior Surfaces of Oven ii
Power Connections ii
Self-Cleaning Oven Guidelines ii
RF Interference Considerations iii
Section 1 - Specications and Installation
eory of Operation 1.1
Catalytic Converter 1.1
Certifications 1.1
Electrical Specifications 1.1
Dimensions - Double Wall Oven 1.2
Dimensions - Single Wall Oven 1.2
Installation 1.3
Installation Safety Instructions 1.3
Double Wall Oven Cabinet Dimensions 1.5
Single Wall Oven Cabinet Dimensions 1.5
Installing the Oven 1.5
Section 2 - Oven Controls and Cooking - The Speedcook Oven
Speedcook Oven Controls 2.1
Cook Modes 2.2
Air-Crisp 2.2
Bake 2.2
Broil 2.2
Dehydrate 2.2
Favorites 2.2
Roast 2.3
Toast 2.3
Favorites Cooking 2.3
Cooking a Recently Prepared Dish 2.3
Cooking a ”Favorite” Dish 2.3
Using the Convection Bake Function 2.4
Using the Defrost Function 2.4
Using the Microwave Function 2.4
Basic Cooking 2.5
Mode 1: Oven Off 2.5
Mode 2: Select a Food Item 2.5

Mode 3: Confirm Settings 2.6
Mode 4: Preheat 2.6
Mode 5: Ready to Cook 2.6
Mode 6: Cooking 2.6
Mode 7: 80% Complete 2.6
Mode 8: 100% Complete 2.7
Mode 9: Remove Food from Oven 2.7
Adjusting a Recipe’s Cook Time 2.8
Adjusting a Cook Temperature 2.8
e Advanced Cook Mode 2.8
Saving to Favorites 2.9
Renaming a Dish (in Favorites) 2.10
Deleting a Dish (from Favorites) 2.10
Reheat Setting 2.10
Self-Clean Mode - Speedcook Oven 2.10
Section 3 - Oven Controls and Cooking - Lower Oven
(Double-Wall Oven Only)
Lower Oven Controls 3.1
Cook Modes 3.2
Bake 3.2
Broil 3.2
Convection Bake 3.2
Convection Roast 3.2
Roast 3.2
Warm Setting 3.2
Proof Setting 3.2
Basic Cooking 3.3
e Sabbath Mode 3.3
Self Clean Mode 3.4
Section 4 - Info Mode
Overview of the Info Mode 4.1
Adjusting Oven Sounds 4.1
Adjusting Display Settings 4.2
Adjusting the Oven’s Units & Measurements 4.2
Accessing Help Topics and General Cooking Information 4.2
Updating the Oven Software 4.3
Backing Up/Restoring Favorites 4.3
Accessing the Version Information 4.4
Installer Setup 4.4
Top (or Single Wall) Oven Component Tests 4.4
Bottom Oven Component Tests 4.4
Oven Configuration 4.4
AC Voltage Configuration 4.4
Simulation/Demo State, and printf Mask 4.4

Section 5 - Oven Systems
Convection System - Speedcook Oven 5.1
Blower Motor (Bottom) 5.1
Blower Motor (Top) 5.1
Blower Motor Controller (BMSC) 5.1
Heater Assembly 5.1
Jetplate (Bottom) 5.1
Jetplate (Top) 5.1
Stirrer Motor and Assembly 5.1
Convection System - Lower Oven (Double Wall Oven Only) 5.2
Broil Element 5.2
Bake Element 5.2
Convection Element 5.2
Convection Fan 5.2
Speedcook Oven Door 5.2
Removing/Reinstalling the Speedcook Oven Door 5.2
Door Skin Replacement 5.3
Left Lock Motor Assembly 5.3
Right Lock Motor Assembly 5.3
Measuring RF Leakage for Microwave Safety 5.4
Halogen Light Assembly 5.5
Lower Oven Door (Double Wall Oven Only) 5.5
Removing/Reinstalling the Lower Oven Door 5.5
Halogen Bulb Replacement 5.6
Microwave System 5.6
Doubler Circuit, Voltage 5.6
High-Voltage Capacitors 5.6
High-Voltage Diode 5.6
High-Voltage Transformers 5.7
Wiring a High-Voltage Transformer 5.7
Magnetrons 5.7
Stirrer Motor and Assembly 5.7
Waveguides 5.7
Control System 5.8
Air Switch (Single Wall Oven) 5.8
Clock 5.8
Control Board 5.8
CookWheel Control 5.8
Display, Lower Oven 5.8
Attaching the Lower Display Cable 5.8
Display, Speedcook Oven 5.9
Electrical Compartment Cooling Fans 5.9
EMI Filter 5.9
Fuses 5.9
High Limit ermostats 5.9
Latch Mechanism (Lower Oven) 5.9
Light Switch, Control Panel 5.9

M.O.V. Filter 5.9
Magnetron Cooling Fan 5.10
Magnetron ermostats 5.10
Power Supply, 12 VDC 5.10
Power Supply, 24 VDC 5.10
Relay Board (Gen 2 Oven) 5.10
Relay - K2 Monitor (Gen 1 Oven) 5.10
Relay - K3 T1 HV Transformer (Gen 1 Oven) 5.10
Relay - K4 T2 HV Transformer (Gen 1 Oven) 5.10
Relay - K5 Mag Cooling Fan (Gen 1 Oven) 5.10
Relay - K6 Right Side Door Lock (Gen 1 Oven) 5.10
Relay - K7 Left Side Door Lock (Gen 1 Oven) 5.10
Relay - K8 Preheat (Gen 1 Oven) 5.10
Relay - K9 L2 Speedcook Heating Elements 5.11
Relay - K10 Lower Door Lock (Gen 1 Oven) 5.11
Relay - K13 L2 Lower Heating Elements (Double Wall Oven Only) 5.11
RJ Cables 5.11
RTD 5.11
SD Card 5.11
Selector Switches 5.11
Solid State Relay - K1 L1 Speedcook Heating Elements 5.12
Solid State Relay - K11 Bake and Convection Elements (Double Wall Oven Only) 5.12
Solid State Relay - K12 Broil Elements: Inner and Outer (Double Wall Oven Only) 5.12
Speaker 5.12
Temperature Switch 5.12
Transformer, Clock, 12 VAC 5.12
ermostat, Cook Cavity 5.12
ermostat, Cooling Fan Control 5.12
USB Port 5.12
Connecting the USB Board (Gen 1 Oven) 5.12
Wiring Harness 5.13
Exhaust System 5.13
Catalytic Converter 5.13
Exhaust Blower 5.13
Vent Catalyst 5.13
Section 6 - Troubleshooting
Overview of Troubleshooting 6.1
Error Screens 6.1
Oven Door Open (Gen 1) 6.1
Oven Door Open (Gen 2) 6.2
Cooling Fan Failure (Gen 1) 6.2
Cooling Fan Failure (Gen 2) 6.2
Temperature Control Failure 6.2
Magnetron Failure 6.3
Magnetron Failure Troubleshooting 6.3
Blower Failure 6.3
Blower Failure Troubleshooting 6.4

Oven Over Temperature 6.4
Component Testing and Troubleshooting 6.4
Control System 6.4
Clock Assembly 6.4
Control Board 6.4
CookWheel Control (Speedcook Oven) 6.4
EMI Filter 6.5
Oven Mode Switch (Lower Oven) 6.5
Power Supply, 12 VDC 6.5
Power Supply, 24 VDC 6.5
RTD 6.6
Transformer, 12 VAC (Gen 1) 6.6
Transformer, 12 VAC (Gen 2) 6.6
Halogen Light System 6.7
Light Switch, Control Panel (Manual) 6.7
Light Switch, Speedcook Oven (Door Actuated) 6.7
One Speedcook Oven Light is Out 6.7
Both Speedcook Oven Lights are Out 6.7
Both Speedcook Oven and Both Lower Oven Lights are Out (Double Wall Oven) 6.7
Cooling System 6.7
Cooling Fan Overview (Gen 1) 6.7
Cooling Fan Overview (Gen 2) 6.8
Troubleshooting Cooling Fans (Gen 1) 6.8
Troubleshooting Cooling Fans (Gen 2) 6.9
Air Impingement Systems 6.9
Blower Motors, Speedcook Oven 6.9
Convection Fan, Lower Oven 6.10
Microwave System 6.10
Testing a Capacitor 6.10
Testing a High-Voltage Diode 6.10
Testing a High-Voltage Transformer 6.11
Testing a Magnetron for an Open/Shorted Filament 6.11
Heating System, Speedcook Oven 6.11
Heater Element, Speedcook Oven 6.12
No Heat 6.12
Oven is Heating up Very Slowly 6.12
Testing for Control Voltage to the K1 SSR 6.12
Testing for Control Voltage to the K8 Relay (Gen 1) 6.13
Testing Relay 14 (Pre-Heat) Operation (Gen 2) 6.13
Testing for a K9 Relay that is Stuck Open 6.13
Testing for a K1 SSR that is Stuck Open 6.13
Heating System, Lower Oven 6.13
Lower Oven Heating Element Specifications 6.14
No Heat/Slow to Heat 6.14
Testing for Voltage to the K11 SSR 6.14
Testing for Voltage to the K12 SSR 6.14
Testing for a K11 SSR that is Stuck Open 6.15
Testing for a K12 SSR that is Stuck Open 6.15
Testing for a K13 Relay that is Stuck Open 6.15

Section 7 - Schematics
Gen 1 Speedcook Oven Schematic 7.1
Gen 1 Bottom Oven Schematic 7.2
Gen 2 Speedcook Oven Schematic 7.3
Gen 2 Bottom Oven Schematic 7.4
Single Wall Oven Schematic 7.5
RWD/RWS Gen 2 Control Board 7.6
RWD/RWS Gen 2 Relay Board 7.7
Appendix - Replacing Oven Components
Comprehensive Table of Oven Components A.1
Component and Assembly Location, DWO Gen 1 and Gen 2 A.6
Removing the Oven A.6
Component and Assembly Location, SWO A.8
Removing the Oven A.8
Front Trim Assembly Detail A.10
Front Trim Assembly Removal A.10
Control Housing Detail A.12
Upper Electrical Compartment, DWO Gen 1 A.13
Differentiating Between DWO Gen 1 and DWO Gen 2 A.13
Upper Electrical Compartment, DWO Gen 2 and SWO A.16
Differentiating Between DWO Gen 1 and DWO Gen 2 A.16
Controls Assembly Detail, DWO Gen 1, DWO Gen 2, and SWO A.18
Mag Air Diverter Assembly Detail, DWO Gen 1, DWO Gen 2, and SWO A.20
Relay and Relay/Power Assembly Detail, DWO Gen 1, DWO Gen 2, and SWO A.21
Lower Electrical Compartment Detail, DWO Gen 1 and DWO Gen 2 A.22
Differentiating Between DWO Gen 1 and DWO Gen 2 A.22
Speedcook Oven Cavity Component Detail, DWO Gen 1, DWO Gen 2, and SWO A.24
Lower Oven Cavity Component Detail, DWO Gen 1 and DWO Gen 2 A.28