TurboChef C3/C Installation and operating manual

PN: TC3-0215 Rev. F Oct. 2008
C3/C, C3/CMULTI EW, C3/CMULTI ED, C3/CMULTI UK,
C3/D, C3/D EW, C3/D ED, C3/D UK
CONVECTION MICROWAVE OVEN
SERVICE AND REPAIR MANUAL
TUR OCHEF TECHNOLOGIES INC.
www.turbochef.com
4240 International Parkway, Suite 105, Dallas, Texas 75007 USA
(800) 90TUR O or [phone]
TM
© 2007 - TurboChef Technologies Inc

TurboChef Technologies, Inc. C3
.
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TurboChef Technologies, Inc.
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Table of Contents
READ THIS FIRST …………………………………………………………………………… i
Important Safety Instructions ……………………………………………………………….. ii
Precautions to Avoid Possible Exposure to Excessive Microwave Energy ……………. iii
Precautions to be Observed efore and During
Servicing to Avoid Possible Exposure to Excessive Microwave Energy ………………. iv
Grounding Instructions ………………………………………………………………………. v
Power Cord Replacement …………………………………………………………………… v
RF Interference Considerations …………………………………………………………….. vi
Chapter 1 Installation Specs
Oven Description …………………………………………………………………. 1-2
Installation ………………………………………………………………………… 1-2
Oven Location and Clearances 1-3
Chapter 2 Cleaning & Care
asic Cleaning Procedures ……………………………………………………… 2-2
Chapter 3 Theor of Operation
Theory of Operation Description ………………………………………………… 3-2
Glossary of Common Operating Terms ………………………………………….. 3-3
Programming Mode 3-4
Chapter 4 Fault Codes
Fault Code Introduction ………………………………………………… 4-2
Fault Code Summary Matrix ………………………………………….. 4-3
Chapter 5 Test
Test Function Detailed Description ……………………………………………… 5-2
Passwords for Operating C3 ovens ………………………………………….. 5-3
Chapter 6 Electrical Compartment & Controls
Electrical Component Locations C3/A 6-2
Electrical Component Locations C3/C 6-3
Electrical Component Locations C3/Multi 6-4
Electrical Component Locations C3/C Multi ………………… 6-5
Electrical Component Parts Lists 6-6
Control Panel Detail 6-8
Control System Troubleshooting 6-9
(SMT) I/O oard Troubleshooting 6-10
Chapter 7 Cook Door
Door Switches and Circuit reakers 7-2
Door Switch Adjustment 7-4
Door Removal and Replacement ………………………………………………. 7-10

TurboChef Technologies, Inc.
Door Removal and Replacement Left Side Parts List 7-13
Door Removal and Replacement Right Side Parts List 7-16
C3/C AND C3/CMULTI Door Assy and Parts List 7-18
Chapter 7 Cook Door
C3/A and C3MULTI Door Assy and Parts List 7-21
Chapter 8 Convection Circuit
Catalytic Converter ………………………………………………………………. 8-2
Convection Element and Thermocouples ……………………………………… 8-3
How to Turn Heaters ON & OFF …………………………………………. 8-4
Changing Heater Operating Voltage …………………………………………. 8-5
Heater Circuit Defective Messages …………………………………………. 8-6
Convection ( lower) Motor Operation ……………………. 8-9
How to Turn lower On ……………………. 8-9
Checking Input Voltage at Motor Controller ……………………. 8-9
lower Circuit Defective Messages ……………………. 8-10
SP-200 lower Motor Controller Fault Codes & Troubleshooting……………….8-11
Delta lower Motor Controller Fault Codes & Troubleshooting………………….8-13
Convection Motor Parts List …………… ………. 8-16
Chapter 9 Microwave Circuit
Measuring for Microwave Radiation Leakage ………………………………… 9-2
Microwave Circuit Defective Messages………………………………………… 9-3
Magnetron & Monitor Circuits…………………………………………………………9-3
Magnetron High Voltage Power Supply………………………………………….. 9-5
Magnetron Testing ……………………………………………………………….. 9-6
Magnetron Removal and Replacement ………………………………………… 9-6
Component Testing (Diode, Capacitor, Transformer)…………………………… 9-7
Transformer Specifications ……………………………………………………… 9-8
Waveguide Components Parts List 9-10
Chapter 10 (SMT)I/O BOARD & Schematics
C3/A Schematic ………………………………………………………………….. 10-2
C3/C Schematic 10-3
C3Multi Schematic 10-4
I/O oard Layout 10-5

i
READ THIS FIRST
efore working on the TurboChef Technologies, Inc. C Series oven you must first read the safety
instructions on the following pages. The C3 series oven is a combination convection/microwave oven.
While servicing this oven, an RF meter must be used at all times to check for microwave leakage. This RF
reading must be recorded on your work invoice.
Very often poor cleaning will result in microwave leakage. Please refer to chapter 2, Cleaning & Operation,
for information on the proper cleaning procedures.
efore removing the metal skin to access the electrical components in this oven, the power must be shut
off and the oven unplugged. Wait at least one full minute before removing the oven skin so that the
magnetron circuit can self–discharge. FAILURE TO DO SO MAY RESULT IN DEATH OR SERIOUS
INJURY.
PLEASE NOTE: THIS MANUAL ONLY COVERS C3/AB OVENS PRODUCED BY THE BLODGETT
OVEN CORPORATION, C3MULTI OVENS PRODUCED TURBOCHEF, C3/C AND C3/CMULTI OVENS
PRODUCED BY TURBOCHEF TECHNOLOGIES IN CHINA.
This manual is divided into ten (10) chapters as follows:
1. INSTALLATION SPECS - This chapter includes oven specifications and the parameters for
proper installation.
2. CLEANING & OPERATION - Improper cleaning can and will affect the operation of this oven. This
chapter includes a brief description of the cleaning and operation
procedures of the oven and the procedures to edit or change a
cooking program.
3. THEORY OF OPERATION - This chapter provides a total oven overview of all major subsystems in
the oven. Additionally, it provides a list of major terms and
programming instructions.
4. FAULT CODES - This chapter includes information on all fault codes currently
programmed in the oven to display in the event of a major mulfucntion.
5. TEST - This chapter details the Test Mode, which allows the technician to
operate individual components or section of the C3 SERIES oven.
Using this feature will isolate most electrical troubleshooting
problems.
6. ELECTRICAL COMPARTMENT - This chapter identifies the electrical compartment components,
including the smt board (computer board) and a troubleshooting guide.
Use the ke to help isolate electrical troubleshooting problems.
7. COOK DOOR - This chapter includes information on the Cook Door adjustment,
assembly and troubleshooting techniques.
8. CONVECTION CIRCUIT - This chapter provided information on the convection and blower motor
speed control. Removal and cleaning of the catalytic converter are
also provided.
9. MICROWAVE CIRCUIT - This chapter includes information on the microwave circuit and stirrer
motor.
10. I/O oard/Schematics - This chapter includes information on I/O board and schematics on
ovens currently in the field (latest production is only represented)
This Service and Repair manual is set up for use b qualified technicians onl . If ou are unfamiliar
with this oven, call TurboChef Technologies Inc.

ii
IMPORTANT SAFETY INSTRUCTIONS
WHEN USING ELECTRICAL APPLIANCES, THE FOLLOWING
BASIC SAFETY PRECAUTIONS SHOULD BE STRICTLY ADHERED TO:
WARNING!!
To reduce the risk of burns, electric shock, fire, injur to persons or exposure to excessive
microwave energ :
1. Read all instructions before using the appliance.
2. Read and follow the specific PRECAUTIONS TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE
MICROWAVE ENERGY found on pages iii & iv.
3. This appliance must be grounded. Connect only to properly grounded outlet. See GROUNDING
INSTRUCTIONS found on page v.
4. Install or locate this appliance only in accordance with the provided installation instructions.
5. Some products such as whole eggs and sealed containers - for example, closed glass jars - may
explode and SHOULD NOT be heated in this oven.
6. Use this appliance only for its intended use as described in the manual. DO NOT use corrosive
chemicals or vapors in this appliance. This type of oven is specifically designed to heat, cook, or dry
food. It is NOT designed for industrial or laboratory use.
7. Children SHOULD NOT use this appliance.
8. DO NOT operate this appliance if it has a damaged cord or plug, if it is not working properly, or if it has
been damaged or dropped. See POWER SUPPLY CORD REPLACEMENT found on page v.
9. This appliance should be serviced only by qualified service personnel. Contact the nearest authorized
service facility for examination, repair or adjustment.
10. DO NOT cover or block any openings on the appliance.
11. DO NOT store this appliance outdoors. DO NOT use this product near water - for example, near a
kitchen sink, in a wet basement, or near a swimming pool.
12. DO NOT immerse cord or plug in water.
13. Keep cord away; from heated surfaces.
14. DO NOT let cord hang over edge of table or counter.
15. DO NOT use a water jet for cleaning.
16. See the Maintenance section of this manual.
17. Microwave heating of beverages can result in delayed eruptive boiling, therefore care must be taken
when handling the container.
18. The contents of feeding bottles and baby food jars must be stirred or shaken and the temperature
checked before consumption, in order to avoid burns.
19. Only use utensils that are suitable for use in microwave ovens.
20. When heating food in plastic or paper containers, keep an eye on the oven due to the possibility of
ignition.
21. To reduce the risk of fire in the oven cavity:
a) DO NOT overcook food. Carefully attend appliance if paper, plastic, or other combustible materials
are placed inside the oven to facilitate cooking.
b) Remove wire twist-ties from paper or plastic bag in oven.
c) If materials inside the oven should ignite, keep oven door closed, turn oven off, and disconnect the
power cord, or shut off power at the fuse or circuit breaker panel.
d) DO NOT use the cavity for storage purposes. DO NOT leave paper products, cooking utensils, or
food in the cavity when not in use.
SAVE THESE INSTRUCTIONS

iii
PRECAUTIONS TO AVOID POSSIBLE
EXPOSURE TO EXCESSIVE MICROWAVE ENERGY
1. DO NOT attempt to operate this oven with the door open since open-door operation can result in
harmful exposure to microwave energy. It is important not to defeat or tamper with the safety interlocks.
2. DO NOT place any object between the oven front face and the door or allow soil or cleaner residue to
accumulate on the sealing surfaces.
3. DO NOT operate the oven if it is damaged. It is particularly important that the oven door close properly
and that there is no damage to the:
a) Door (bent).
b) Hinges and latches (broken or loosened).
c) Door seals and sealing surfaces.
4. The oven SHOULD NOT be adjusted or repaired by anyone except properly qualified service
personnel.
SAVE THESE INSTRUCTIONS

iv
PRECAUTIONS TO BE OBSERVED BEFORE
AND DURING
SERVICING TO AVOID POSSIBLE EXPOSURE
TO EXCESSIVE MICROWAVE ENERGY
1. DO NOT operate or allow the oven to be operated with the door open.
2. Make the following safety checks on all ovens to be serviced before activating the magnetron or other
microwave source, and make repairs as necessary:
a) Interlock operation.
b) Proper door closing.
c) Seal and sealing surfaces (arcing, wear, and other damage).
d) Damage to or loosening of hinges and latches.
e) Evidence of dropping or abuse.
3. efore turning on microwave power for any service test or inspection within the microwave generating
compartments, check the magnetron, wave guide, or transmission line, and cavity for proper alignment,
integrity, and connection.
4. If the oven is operative prior to servicing, a microwave emission check should be performed prior to
servicing the oven. Refer to page 6-2 of this manual for microwave leakage testing procedure.
5. Any defective or mis–aligned components in the interlock, monitor, door seal, and microwave
generation and transmission systems shall be repaired, replaced, or adjusted by procedures described
in this manual before the oven is released to the owner.
6. A microwave leakage check to verify compliance with the Federal Performance Standard MUST BE
performed on each oven prior to release to the owner. Refer to page 6-2 of this manual for microwave
leakage testing procedure.
SAVE THESE INSTRUCTIONS

v
GROUNDING INSTRUCTIONS
This appliance MUST BE grounded. In the event of an electrical short circuit, grounding reduces the risk of
electric shock by providing an escape wire for the electric current. This appliance is equipped with a cord
having a grounding wire with a grounding plug. The plug must be plugged into an outlet that is properly
installed and grounded.
WARNING!!
Improper use of the grounding can result in a risk of electric shock.
Consult a qualified electrician or serviceman if the grounding instructions are not completely understood, or
if doubt exists as to whether the appliance is properly grounded.
DO NOT use an extension cord. If the power supply cord is too short, have a qualified electrician or
serviceman install an outlet near the appliance.
POWER SUPPLY CORD REPLACEMENT
If the power supply cord is damaged, it MUST BE replaced by the manufacturer or its service agent or a
similarly qualified person in order to avoid a hazard.
General Note about Construction
Please be advised that the TurboChef® C3 series ovens are manufactured in various locations, as such the
C3/C and C3/Cmulti are constructed using the Metric System. Therefore, it is very important to note the
model number of the unit you are servicing to ensure you get the correct Metric component. Care has
been given in this manual to list the different part numbers for the Metric and Imperial (C3/A and C3Multi)
ovens. In addition, please note that most hardware on the C3/C and C3/Cmulti oven is metric unless
otherwise specified.

vi
SAVE THESE INSTRUCTIONS

vii
RF INTERFERENCE CONSIDERATIONS
This oven generates radio frequency signals. This device has been tested and determined to be in
compliance with applicable part of FCC part 18 requirements and to the protection requirements of Council
Directive 89/336/EEC on the approximation of the laws of the Member States relating to electromagnetic
compatibility at the time of manufacture. However, some other equipment may exhibit sensitivity to signals
below these limits resulting in interference with that equipment.
If your equipment experiences interference, the following steps should be considered:
1. Increase the physical separation between this oven and the sensitive equipment.
2. If the sensitive device can be grounded, do so following accepted grounding practices.
3. If battery powered microphones are being affected, insure that the batteries are fully charged.
4. Keep sensitive equipment on electrically separate circuits, if possible.
5. DO NOT route intercom wires, microphone wires, or speaker cables near oven.
SAVE THESE INSTRUCTIONS

CHAPTER 1
INSTALLATION SPECS

TurboChef Technologies, Inc. C series
1 - 2
OVEN DESCRIPTION
SPECIFICATIONS C3/AB, C3MULTI, C3/C, AND C3/CMULTI
Dimensions (single unit) 29” W x 25.5” H x 29.5” D (73.66 cm x 64.77 cm x 74.93 cm)
Dimensions (double stacked units) 29” W x 43” H x 29.5” D (73.66 cm x 109.22 cm x 74.93 cm)
Maximum Input 7.2 kW
Power Supply
US (1 φ
) All Models
208 VAC, 60Hz, 1 φ, 35 amp, 3 wire including ground
240 VAC, 60 Hz, 1φ, 30 amp, 3 wire including ground
Europe(1φ
) All Models
230-240 VAC, 50 Hz, 1φ, 30 amp, 3 wire including ground
US (3φ) C3Multi and C3/Cmulti 208 VAC, 60Hz, 3 φ, Delta, 30 amp, 4 wire including ground
240 VAC, 60 Hz, 3φ, Delta, 22 amp, 4 wire including ground
Europe (3φ) C3Multi and C3/Cmulti
380-415 VAC, 50 HZ, 3φ, WYE, 15 Amp, 5 wire including ground
230-240 VAC, 50 HZ, 3φ, Delta, 22 Amp, 4 wire including ground
Microwave Frequency 2.45 GHz
Connections including ground The unit is supplied with a 6’ power cord that includes:
US (1 φ) NEMA 6-50P
Europe(1φ
φφ
φ) 32A IEC 60309 plug
US (3 φ) NEMA 15-50P
Europe(3φ
φφ
φ) 32A IEC 5 Pin plug
The outlet box, receptacle, and wall
plate are to be furnished by
the installing contractor.
Maximum Power Usage
Convection Oven
Microwave Oven
5.2 kW
2.0 kW
TA LE 1 - 1 Oven Specifications
INSTALLATION
The TurboChef Technologies, Inc. oven is
manufactured to comply with applicable CE, ETL,
FDA, and FCC requirements. In addition, the unit
is ETL classified to NSF 4. Note: Some
European models may or may not be certified
under US FDA and/or ETL regulations. All
equipment is designed and certified for safe
operation when installed in accordance with local
and/or national codes. Many local codes exist,
and it is the responsibility of the owner and
installer to comply with these codes. In addition,
if the oven is not UL or ETL listed it MAY NOT E
USED or SOLD in the U.S.A or any of its
territories.
In no event shall the manufacturer assume any
liability for damages or injuries resulting from
installations which are not in compliance with the
instructions and codes listed above.
WARNING!!
DEATH, INJURY, AND EQUIPMENT DAMAGE
could result from improper installation of this
oven or installation of an oven which has
been damaged during shipment or storage.
Either of these conditions could void the
equipment warrant .
DO NOT INSTALL an oven suspected of
damage.
INSTALL this oven according to the policies
and procedures outlined in this manual.

Installation Specs
1- 3
OVEN LOCATION
The well planned and proper placement of your
oven will result in long term operator convenience
and satisfactory performance.
e sure to place the oven in an area which is
accessible for proper operation and servicing.
The countertop or work surface must be able to
support the weight of 250 pounds. The
manufacturer shall not assume liability for
damage or injury resulting from improper
installation of equipment including temporary or
unstable work stations or countertops.
There must be 2” (5.08 cm) between the top of
the unit and any shelf or other surface.
The oven must be installed level front to back
and side to side. The oven legs may be bolted to
the counter top if desired.
Countertop surface must be at least 30 inches
deep. Operator is responsible for proper
placement on the countertop. TurboChef will not
be responsible should an oven fall off a
countertop due to improper placement or use by
the customer. Oven placement shall be readily
accessible by a service agent. Additional charges
ma be incurred by the customer should product
placement mandate required service labor
charges due to accessibility to the unit.
OVEN CLEARANCES
Top: 4” (10.2 cm)
Sides: 2” (5.1 cm)
ack: 0”

CHAPTER 2
CLEANING & OPERATING

TurboChef Technologies, Inc. C Series
2-2
BASIC CLEANING PROCEDURES
PROBLEMS ASSOCIATED WITH IMPROPER
CLEANING
The oven may not be operating correctly because
it is not being cleaned properly. If the door is
leaking microwaves, erratic operation of the
display and other electrical components can
occur. Also food deposits left in the oven will turn
into black carbon from the high heat. Carbon can
cause arcing inside the cooking area and can
reflect energy back to the magnetron.
If a customer tells you they are experiencing
cooking performance problems, carefully inspect
the cooking platter and waveguide cap for chips.
If the platter or waveguide cap are chipped and
soaked in water, they will absorb the water. The
water will then be heated instead of the food
product. The chipped part must be replaced.
DAILY CLEANING
1. Carefully remove the ceramic cooking platter
and wave–guide cap. Spray both pieces onl
with TurboCare®
®®
® Oven Cleaner and set
aside to allow the cleaner to penetrate. DO
NOT soak the Ceramic Cook Platter or
Waveguide Cap in water.
2. Clean the ceramic cooking platter, and wave
guide cap using brushes and scrub pads.
Rinse to remove all cleaner and debris.
Inspect for damage and replace as required.
3. Reinstall the clean wave–guide cap into
the oven. This will protect the wave–guide
seal while the cook chamber is cleaned.
4. To clean the interior of the oven, use a 3”x5”
green scrub pad. Use onl TurboCare®
®®
®
Oven Cleaner on tough spots. DO NOT
wash out the interior cooking area. The
waveguide quartz seal is not a water tight
seal. Wipe out the oven with a damp rag. If
the door area needs cleaning, be careful not
to damage the small rubber gasket around
the door shunt area.
5. Remove the lower access panel and grease
collection pan. Empty, clean and reinstall the
pan.
6. Verify the louvers on the front and side of the
oven are clean of lint and unobstructed.
MONTHLY CLEANING
Remove and clean the exhaust cover from the
back of the oven.
Cook Platter
Waveguide
Cap
Grease
Tray Lower Access
Panel
Exhaust
Cover
FIGURE 2 - 1 Cleaning