Duke TSCM User manual

Service Manual
SM-OV-SB-0015 WIP - 6/6/2016
PROOFER OVEN WITH
TOUCH SCREEN
CONTROLS (TSC-M)
MODELS
TSC-6/18M
TSC-3/9M
This manual is Copyright © 2016 Duke Manufacturing Co. All rights reserved.
Reproduction without written permission is prohibited. Duke is a registered
trademark of the Duke Manufacturing Co.
Duke Manufacturing Co.
2305 N. Broadway
St. Louis, MO 63102
Phone: [phone]
Toll Free: 1-800-735-3853
Fax: [phone]
www.dukemfg.com
Please read this manual completely before attempting
to install, operate or service this equipment.
This document is prepared for trained Duke service technicians. It is not to be used by anyone not
properly qualied to perform these procedures.
This Service Manual is not all encompassing. If you have not been trained on servicing this product,
be sure to read the manual completely before attempting servicing. Be sure all necessary tools,
test equipment, and skills are available. Those procedures for which you do not have the proper
skills and test equipment must be performed only by a qualied Duke trained service technician.
BAKING CENTER

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IMPORTANT WARNING AND SAFETY INFORMATION
THIS MANUAL HAS BEEN PREPARED FOR PERSONNEL QUALIFIED TO INSTALL ELECTRICAL
EQUIPMENT, WHO SHOULD PERFORM THE INITIAL FIELD STARTUP AND ADJUSTMENTS OF
THE EQUIPMENT COVERED BY THIS MANUAL.
READ THIS MANUAL THOROUGHLY BEFORE OPERATING, INSTALLING OR PERFORMING
MAINTENANCE ON THE EQUIPMENT.
FAILURE TO FOLLOW ALL THE INSTRUCTIONS IN THIS MANUAL CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR
MAINTENANCE CAN CAUSE PROPERTY DAMAGE, INJURY OR DEATH.
ELECTRICAL CONNECTIONS SHOULD BE PERFORMED ONLY BY A CERTIFIED
PROFESSIONAL.
ELECTRICAL AND GROUNDING CONNECTIONS MUST COMPLY WITH THE
APPLICABLE PORTIONS OF THE NATIONAL ELECTRIC CODE AND/OR ALL LOCAL ELECTRIC
CODES. FAILURE TO COMPLY WITH THIS PROCEDURE CAN CAUSE PROPERTY DAMAGE,
INJURY OR DEATH.
BEFORE CONNECTING THE UNIT TO THE ELECTRICAL SUPPLY, VERIFY THAT
THE ELECTRICAL AND GROUNDING CONNECTIONS COMPLY WITH THE APPLICABLE PORTIONS
OF THE NATIONAL ELECTRIC CODE AND/OR OTHER LOCAL ELECTRICAL CODES. FAILURE TO
COMPLY WITH THIS PROCEDURE CAN CAUSE PROPERTY DAMAGE, INJURY OR DEATH.
BEFORE CONNECTING THE UNIT TO THE ELECTRICAL SUPPLY, VERIFY THAT
THE ELECTRICAL CONNECTION AGREES WITH THE SPECIFICATIONS ON THE DATA PLATE.
FAILURE TO COMPLY WITH THIS PROCEDURE CAN CAUSE PROPERTY DAMAGE, INJURY OR
DEATH.
UL73 GROUNDING INSTRUCTIONS: THIS APPLIANCE MUST BE CONNECTED
TO A GROUNDED, METAL, PERMANENT WIRING SYSTEM. OR AN EQUIPMENT-GROUNDING
CONDUCTOR MUST BE RUN WITH THE CIRCUIT CONDUCTORS AND CONNECTED TO THE
EQUIPMENT-GROUNDING TERMINAL OR LEAD ON THE APPLIANCE. FAILURE TO COMPLY WITH
THIS PROCEDURE CAN CAUSE PROPERTY DAMAGE, INJURY OR DEATH.
APPLIANCES EQUIPPED WITH A FLEXIBLE ELECTRIC SUPPLY CORD, ARE
PROVIDED WITH A THREE-PRONG GROUNDING PLUG. IT IS IMPERATIVE THAT THIS PLUG
BE CONNECTED INTO A PROPERLY GROUNDED THREE-PRONG RECEPTACLE. FAILURE TO
COMPLY WITH THIS PROCEDURE CAN CAUSE PROPERTY DAMAGE, INJURY OR DEATH.
IF THE RECEPTACLE IS NOT THE PROPER GROUNDING TYPE, CONTACT AN
ELECTRICIAN. DO NOT REMOVE THE GROUNDING PRONG FROM THE PLUG. FAILURE TO

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COMPLY WITH THIS PROCEDURE CAN CAUSE PROPERTY DAMAGE, INJURY OR DEATH.
BEFORE PERFORMING ANY SERVICE THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION AND/OR EXPOSURE TO ELECTRICAL COMPONENTS, ALWAYS
PERFORM THE ELECTRICAL LOCKOUT/TAGOUT PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY WITH THIS PROCEDURE CAN CAUSE PROPERTY DAMAGE, INJURY OR
DEATH.
BEFORE REMOVING ANY SHEET METAL PANELS OR SERVICING THIS
EQUIPMENT, ALWAYS PERFORM THE ELECTRICAL LOCKOUT/TAGOUT PROCEDURE. BE SURE
ALL CIRCUITS ARE DISCONNECTED. FAILURE TO COMPLY WITH THIS PROCEDURE CAN
CAUSE PROPERTY DAMAGE, INJURY OR DEATH.
DO NOT OPERATE THIS EQUIPMENT WITHOUT PROPERLY PLACING AND
SECURING ALL COVERS AND ACCESS PANELS. FAILURE TO COMPLY WITH THIS PROCEDURE
CAN CAUSE PROPERTY DAMAGE, INJURY OR DEATH.
DO NOT USE OR STORE GASOLINE OR OTHER FLAMMABLE VAPORS OR
LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE. FAILURE TO COMPLY CAN
CAUSE PROPERTY DAMAGE, INJURY OR DEATH.
IN THE EVENT OF A POWER FAILURE, DO NOT ATTEMPT TO OPERATE THIS
APPLIANCE. FAILURE TO COMPLY CAN CAUSE PROPERTY DAMAGE, INJURY OR DEATH.

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TABLE OF CONTENTS
INTRODUCTION .......................................................................................................................................................5
SPECIFICATIONS .....................................................................................................................................................5
REMOVAL AND REPLACEMENT OF COMPONENTS .............................................................................................7
Electrical LOCKOUT/TAGOUT Procedure ..........................................................................................................7
COVERS AND PANELS......................................................................................................................................7
Proofer Rear Panel ......................................................................................................................................7
Oven Rear Panel..........................................................................................................................................8
Oven Fan Cage and Wire Harness Cover ...................................................................................................8
Proofer Floor Panel......................................................................................................................................9
Oven Ceiling Panel ......................................................................................................................................9
Electrical Compartment Access Panel .......................................................................................................10
Rear Access Panel..................................................................................................................................... 11
AC INPUT VOLTAGE WIRING CONNECTIONS .............................................................................................. 11
ESD Wrist Strap......................................................................................................................................... 11
  PossibleWiringBlockCongurations .......................................................................................................12
Right Side Electrical Compartment Components.......................................................................................12
Cooling Fan................................................................................................................................................12
Proofer Lights Circuit Breaker....................................................................................................................13
High Limit Thermostat ................................................................................................................................13
Touchpad Controller...................................................................................................................................14
PC I/O Board..............................................................................................................................................16
PC 12V Power Board.................................................................................................................................16
Solid State Relay (SSR).............................................................................................................................17
Proofer and Oven Light Transformers........................................................................................................18
Oven Door Switch ......................................................................................................................................19
Left Side Louvered Access Panel ..............................................................................................................20
USB Port ....................................................................................................................................................20
Fuses .........................................................................................................................................................21
Power ON/OFF Switch...............................................................................................................................22
Beeper........................................................................................................................................................22
Proofer and Oven Halogen Lamps.............................................................................................................23
Oven Temperature Sensor (RTD) ..............................................................................................................24
Proofer Heat Elements...............................................................................................................................24
Proofer Circulation Fan ..............................................................................................................................25
Proofer Temperature Sensor (RTD) ...........................................................................................................27
Water Injection Solenoid ............................................................................................................................28
Humidity Sensor.........................................................................................................................................28
Opti-Mist Nozzle.........................................................................................................................................29
Oven Heat Elements..................................................................................................................................30
Oven Blower Motor ....................................................................................................................................31
Oven Blower Motor Start Capacitor ...........................................................................................................32
Door Gasket Replacement.........................................................................................................................33
ADJUSTMENTS.......................................................................................................................................................34
DOOR GASKET COMPRESSION CHECK ......................................................................................................34
PROOFER DOOR GASKET ADJUSTMENT ....................................................................................................34
OVEN AIR WASH DOOR ADJUSTMENT .........................................................................................................35
VERIFYING AND CALIBRATING THE CONTROLLER ....................................................................................36
TEMPERATURE CALIBRATION.......................................................................................................................37
MAINTENANCE .......................................................................................................................................................39
STAINLESS STEEL CARE................................................................................................................................39
WATER FILTER REPLACEMENT.....................................................................................................................39
CLEANING THE OPTI-MIST NOZZLE .............................................................................................................40
TROUBLESHOOTING .............................................................................................................................................42
ELECTRICAL SCHEMATIC......................................................................................................................................46
CUSTOMER ASSISTANCE......................................................................................................................................47

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INTRODUCTION
INSTALLATION
For detailed installation instructions, refer to the Owner’s
Manual (120085).
OPERATION
Forspecicoperatinginstructions,refertotheOwner’s
Manual (120085).
CLEANING
Forspecicinstructions,refertotheOwner’sManual
(120085).
SEQUENCE OF OPERATION
For specic instructions, refer to the Owner’s
Manual (120085).
TOOLS
STANDARD
• Standardsetofhandtools.
• VOMwithACcurrenttester.(AnyqualityVOM
or DVM with a sensitivity of at least 20,000
Ohms per Volt can be used.)
• Aladderorotherappropriateitemtostandon,
if servicing the top of the unit.
SPECIFICATIONS
US and Foreign Patents Pending TSC Model
Shipping Weight: Carton Box: 637 lbs / 288 kg
Shipping Weight: Wooden Crate: 772 lbs / 350 kg
Electrical Specications
AC VOLTAGE HZ PHASE WATTS AMPERAGE
208 60 1 6650 32
208 60 3P 6650 32 1
240 50/60 1 7200 30
240 60 3P 7200 30 1
380 – 415 50 3N 7200 30 2
1: L1<15A, L2<15A, L3<25A 2: L1<15A, L2<15A, L3<15A, N=Common

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Compliance Declaration
Standard: UL197 File: KNGT.E17421
Standard: CSA-C22.2 No. 109 File: KNGT7.E17421
Standard: ANSI / NSF 4 File: TSQT.E157479
Directive 2006/95/EC:
EN60335 -1:2002, A1, A2, A11, A12
EN 60335-2-42:2003
Directive 89/336/EEC:
EN61000-6-1
EN61000-6-3
WEEE RoHS Directive 2002/96/EC
Dimensions

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REMOVAL AND REPLACEMENT OF COMPONENTS
ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
The Electrical LOCKOUT/TAGOUT Procedure is
used to protect personnel working on an electrical
appliance. Before performing any maintenance
or service that requires exposure to electrical
components, follow these steps:
1. In electrical box, place appliance circuit breaker
into OFF position.
2. Place a lock or other device on electrical box
cover to prevent someone from placing circuit
breaker ON.
3. Place a tag on electrical box cover to indicate
that appliance has been disconnected for
service and power should not be restored until
tag is removed by maintenance personnel.
4. Disconnect appliance power cord from
electrical outlet.
5. Place a tag on the cord to indicate that unit
has been disconnected for service and power
should not be restored until tag is removed by
maintenance personnel.
COVERS AND PANELS
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
CAUTION: Interior components and
surfaces may be hot if the unit
has been in recent use.
General Service Note: During its installation,
thisunitisrequiredittobesecuredtothebuilding
structure. There is also a Restraining Device
(aheavy,exiblemetalcable)thatwasinstalled
to prevent the unit from moving beyond a certain
distance in order to prevent damage to the
electrical conduit feeding it. Most service can be
accomplished without moving the unit from its
mounted position. However, if the unit is moved
during service, then these securing devices must
be reinstalled for continued protection against tip-
over and to meet other compliance regulations.
Proofer Rear Panel
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.

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Proofer – Rear Panel Removed
1. Place the unit’s Power ON/OFF Switch in the
OFF position, and follow the proper Lockout/
Tagout procedures.
2. Remove all of the self-tapping sheet metal
screws that secure the Left Rear Panel to the
Proofer. Set aside for reuse.
3. To remove Water Filter Mounting Panel, turn
off water supply and disconnect supply tube.
Remove the left side rear panel as described
in previous steps.
4. Removeall oftheself-tappingsheetmetal screws
that secure the panel to the Proofer. The Water
Filter system will come off with the panel.
Oven Rear Panel
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
The Rear Panel provides access to the Oven Light
Fixtures, Oven Light Fixture wiring harness, the
Oven Heating Element connections and Element
wiring harnesses.
Insulation
Oven
Rear
Panel
Oven – Rear Panel Removed
1. Place the unit’s Power ON/OFF Switch in the
OFF position, and follow the proper Lockout/
Tagout procedures.
2. Remove the screws securing the Oven Rear
Panel. Retain for reuse.
3. Carefully remove the insulation to access to
the Oven Heating Element connections and
Oven Heating Element wiring harness. Retain
the insulation for reuse.
Oven Fan Cage and Wire Harness Cover
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
Oven Fan Cage and Wire Harness Cover

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1. Place the unit’s Power Switch in its OFF
position, and follow the proper Lockout/Tagout
procedures.
2. Remove the four screws securing the Oven
Fan Cage to top of the unit. Retain for reuse.
3. Remove the cage to gain access to the Oven
Fan Motor.
4. Remove the screws securing the Oven Fan
Wire Harness Cover to the top of the unit.
Retain for reuse.
5. Remove the Oven Fan Wire Harness Cover
to gain access to the wiring harness and
connections.
Proofer Floor Panel
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
Heat
Elements
Proofer
Circulation
Fan
Opti-Mist
Assembly
View of Proofer Components
with Floor Panel Removed
1. Place the unit’s Power Switch in its OFF
position, and follow the proper Lockout/Tagout
procedures.
2. Remove the screw securing the Proofer Floor
Panel.
3. Slide the panel out through the front of the unit
being careful not to damage the fan blades or
optimist nozzle.
Access to the Proofer Heater Elements, Opti-Mist
Assembly and Proofer Circulating Fan is available
with the Proofer Floor Panel removed.
Oven Ceiling Panel
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
1. Place the unit’s Power Switch in its OFF
position, and follow the proper Lockout/Tagout
procedures.
2. Remove the Oven Racks
3. Remove the screws securing the panel. Retain
screws for reuse.
4. It may be necessary to pry the panel forward
from the front of the unit. Be careful not to
damage the fan blade when removing the
panel.

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2. Insert screwdriver blade here
and ease panel out if needed.
1. Remove screws
Oven Ceiling Panel Removal
Oven Components
with Ceiling Panel Removed
Access to Oven Heating Elements, Fan Blade,
Oven RTD and Hi Limit Thermostat, is available
with the Oven Ceiling Panel removed.
Electrical Compartment Access Panel
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
It is not necessary to move the unit to gain access
to the Electrical Component Compartment It might
become necessary to remove the unit from the wall
if troubleshooting leads into other areas. Refer
tothespeciccomponentsectionofthismanual
when replacing a component in the Electrical
Compartment.
1. Place the unit’s Power ON/OFF Switch in its
OFF position and follow the proper Lockout/
Tagout procedures.
2. Refer to the drawing and loosen the
appropriate screws.
Remove
Loosen
Electrical Compartment
Access Panel Screw Locations
3. Also, referring to the drawing remove the two
screws at the top of the Control Access Panel.
4. Pull the panel forward then pivot it downward.
CAUTION: DO NOT power on the unit while
the Control Panel is in the open
position.
5. To access electric components, remove the

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four screws (2 on each side) and remove the
High Voltage Shield.
High
Voltage
Shield
High Voltage Shield
6. To troubleshoot for problems, use visual
checks, an Ohmmeter and the proper
Schematic for the version of the unit being
serviced.
CAUTION: When closing the Control Panel,
make sure that wires do not
become pinched between the
Control Panel and the cabinet
surfaces.
7. Reverse steps 2 through 5 to secure the High
Voltage Shield and Control Access Panel.
Rear Access Panel
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
The Rear Access Panel is located at the rear of
the unit. It may be necessary to move the unit to
gain access to this area. This unit makes use of
a restraining device to protect the power cable
and water supply line.
1. Place the unit’s Power ON/OFF Switch in the
OFF position, and follow the proper Lockout/
Tagout procedures.
2. Remove the four screws securing the panel
to the unit to gain access to the AC Power
Connect Block.
Rear
Access
Panel
Rear Access Panel Removal
AC INPUT VOLTAGE WIRING
CONNECTIONS
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
WARNING
IF ALUMINUM AC SUPPLY WIRE IS
PRESENT, THE UNIT IS NOT PROPERLY
WIRED AND MUST BE TAKEN OUT
OF SERVICE UNTIL IT IS PROPERLY
REWIRED USING COPPER WIRE.
ESD WRIST STRAP
An ESD Wrist Strap (provided in replacement
kit) is required when replacing certain
components.
1. Place the unit’s Power ON/OFF Switch in the
OFF position, and follow the proper Lockout/
Tagout procedures.
2. Open the Control Access Panel; refer to the

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PANELSAND COVERS section of the manual
for instructions.
3. Properly connect the ESD Wrist Strap to the
unit and secure it properly on the wrist.
Attach
ESDÊStrap
toÊflange
ESD Wrist Strap
POSSIBLE WIRING BLOCK
CONFIGURATIONS
Note: Also refer to the TSC OVEN LINE SUPPLY
WIRING diagrams at the back of this manual.
1. Place the unit’s Power ON/OFF Switch in its
OFF position, and follow the proper Lockout/
Tagout procedures.
2. Remove the AC Connect Block Cover Plate.
3. Use a Voltmeter to check for the presence of
voltage.
4. With AC power removed and proper Lockout
and Tagout procedures applied, ensure that
the contacts on the connect block are properly
tightened.
Right Side Electrical Compartment
Components
C
AB
A: Cooling Fan
B: Proofer Lights Circuit Breaker
C: High Limit Thermostat
Cooling Fan
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
This fan is mounted on the electrical compartment
on the right side of the unit.
1. Place the unit’s Power ON/OFF Switch in its
OFF position, and follow the proper Lockout/
Tagout procedures.

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2. Remove the two screws securing the Cooling
Fan panel to the electrical compartment.
Cooling Fan Panel
3. Tag and disconnect the cooling fan wires.
4. Remove the four nuts securing the fan to the
panel. Retain the nuts for reuse.
Cooling Fan
5. Remove the fan.
6. Reverse this procedure to install the
replacement fan.
7. Restore the unit to service and check for proper
fan operation.
Proofer Lights Circuit Breaker
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
Before changing the Proofer Lights Circuit Breaker,
check the Proofer Lights Transformer for continuity.
Note: The Proofer Oven Light Bulbs must not be
larger than 10 Watts.
1. Place the unit’s Power ON/OFF Switch in its
OFF position, and follow the proper Lockout/
Tagout procedures.
2. Remove the two screws securing the right side
access panel and open panel.
3. Disconnect the Proofer Lights Circuit Breaker
Wires.
4. Crimptheangesonbothsidesofthebreaker
and push it out of the panel.
Rear view of panel
5. Reverse this procedure to install the new
Proofer Lights Circuit Breaker.
6. Restore power to the unit and check for proper
Proofer Lights operation.
High Limit Thermostat
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
1. Place the unit’s Power ON/OFF Switch in its

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OFF position, and follow the proper Lockout/
Tagout procedures.
2. The High Limit Breaker is located next to the
Cooling Fan and Proofer Lights Circuit Breaker
on the right side of the unit.
3. Remove the two screws securing the right side
access panel and open panel.
4. Mark and disconnect the High Limit Breaker
Wires.
5. Loosen and remove the 2 mounting screws.
High Limit Thermostat
6. Open the oven door and locate the High Limit
Breaker Bulb. Loosen the bracket and remove
Bulb and capillary tube.
High Limit
Breaker Bulb Bracket
Location of High Limit Breaker Bulb
7. Reverse this procedure to install the new High
Limit Breaker.
8. Restore power to the unit and check for proper
operation.
Touchpad Controller
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
CAUTION: An ESD Wrist Strap (provided
in replacement kit) is required
when replacing Touchpad
Controller.
1. Place the unit’s Power ON/OFF Switch in the
OFF position, and follow the proper Lockout/
Tagout procedures.
2. Open the Control Access Panel; refer to the
PANELSAND COVERS section of the manual
for instructions.
3. Properly connect the ESD Wrist Strap to the
unit and secure it properly on the wrist (see
instructions on page 11).
4. Unplug all wire harnesses connected to the
Touchpad Controller.
5. Remove and retain the four (4) hex nuts
securing the Controller and remove the
Controller.
Remove Touchpad Controller
6. Lift the Touchpad Controller off its mounts.
7. Unpack the replacement Touchpad Controller.

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Make sure the ESD wrist strap is properly
attached for this procedure.
Unpack Replacement Touchpad Controller
8. Remove the Display Glass Protective Sheet.
Remove Protective Sheet.
Gently Clean Display Glass.
9. To prevent static cling between the display and
overlay, lightly dust the display glass with baby
powder or talc powder. Gently remove powder
by brushing with a cosmetic brush (as shown
below). Donot wipethe displaywith handsor any
cloth as this may scratch the glass. Additionally,
do not put any powder on the overlay.
10. Place the new Touchpad Controller on the
threaded mounts and replace the four (4) nuts.
Do not over-tighten the nuts.
11. Reconnect all of the Touchpad Controller’s
wire harnesses.
Touchpad Controller Wire Harnesses
12. Close Electrical Compartment Access Panel
but DO NOT reattach or tighten the screws.
13. Restore power to the unit.
14. Place Power ON/OFF Switch in ON position.
15. Touch the screen on the Touchpad Controller
to access the main menu to ensure proper
function.
16. Remove the ESD wrist device, close the
compartment, reattach and tighten all of the
screws removed or loosened earlier.
17. Restore power to unit and check it for proper
operation.

Service Manual for Proofer Oven with Touch Screen Controls (TSC-M)
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PC I/O Board
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
CAUTION: An ESD Wrist Strap is required
when replacing PC I/O Board.
1. Place the unit’s Power ON/OFF Switch in the
OFF position, and follow the proper Lockout/
Tagout procedures.
2. Open the Control Access Panel; refer to the
PANELSAND COVERS section of the manual
for instructions.
CAUTION: DO NOT power on the unit while
the Control Panel is in the open
position.
3. Remove the 4 screws securing the High
Voltage Shield and remove the shield.
High
Voltage
Shield
4. Properly connect the ESD Wrist Strap to the
unit and secure it properly on the wrist (see
instructions on page 11).
5. Mark and unplug all wires and wire harnesses
connected to the Main PC Board.
6. The PC I/O Board is secured by 3 keyhole
standoffs and 1 screw. Remove the screw,
lift the board off the standoffs and release the
board.
PC I/O Board
PC I/O Board
7. Remove the board from the unit.
8. Make sure the ESD Wrist Strap is properly
attached. Remove the replacement PC I/O
board from the packaging.
9. Align mounting holes and secure with screw.
10. Reattach all wires and wire harnesses.
11. Remove the ESD Wrist Strap and detach it
from the unit.
12. Reinstall the High Voltage Shield and close
the Control Access Panel.
13. Restore power to unit and test for proper
operation.
PC 12V Power Board
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
CAUTION: An ESD Wrist Strap is required
when replacing PC I/O Board.
1. Place the unit’s Power ON/OFF Switch in the
OFF position, and follow the proper Lockout/
Tagout procedures.

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2. Open the Control Access Panel; refer to the
PANELSAND COVERS section of the manual
for instructions.
CAUTION: DO NOT power on the unit while
the Control Panel is in the open
position.
3. Remove the 4 screws securing the High
Voltage Shield and remove the shield. (Refer
to the PANELS AND COVERS section of the
manual.)
High
Voltage
Shield
4. Properly connect the ESD Wrist Strap to the
unit and secure it properly on the wrist (see
instructions on page 11).
5. Mark and unplug all wires and wire harnesses
connected to the PC 12V Power Board.
6. The PC 12V Power Board is secured with 2
keyhole standoffs and 2 screws. Remove the
2 screws, lift the board off the standoffs and
remove the board.
PC 12V Power Board
PC 12V Power Board
7. Remove board from unit.
8. Make sure the ESD Wrist Strap is properly
attached. Remove the replacement PC I/O
board from the packaging.
9. Install the replacement board and secure with
the screws.
10. Reattach all wires and wire harnesses.
11. Remove the ESD Wrist Strap and detach it
from the unit.
12. Reinstall the High Voltage Shield and close
the Control Access Panel.
13. Restore power to unit and test for proper
operation.
Solid State Relay (SSR)
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
Note: There are 4 SSR’s in the unit:
• One controls the power to the Convection
Blower.
• OnecontrolsthepowertotheProoferHeating
Element.
• TwocontrolthepowertotheOvenHeating
Element.
Blower
Proofer
Oven
Location of Solid State Relays
1. Place the unit’s Power ON/OFF Switch in the
OFF position, and follow the proper Lockout/
Tagout procedures.

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2. Open the Control Access Panel; refer to the
PANELSAND COVERS section of the manual
for instructions.
CAUTION: DO NOT power on the unit while
the Control Panel is in the open
position.
3. Remove the 4 screws securing the High
Voltage Shield and remove the shield.
High
Voltage
Shield
4. Verify that there is NO POWER at the SSR.
5. Mark and unplug all wires and wire harnesses
connected to the SSR.
6. Loosen and remove the 2 mounting screws.
7. Remove the SSR from the unit.
8. Clean the mounting surface.
Remove Heat Transfer Paste Residue
9. Apply the pre-cut heat transfer pad to the
surface and mount the SSR.
10. Reverse these instructions to install
replacement SSR.
11. Restore power to unit and test for proper
operation.
Proofer and Oven Light Transformers
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
The Proofer and Oven lights use two separate
transformers. Test the transformer in question
before replacing it.
Note: The Proofer Lights are equipped with a
circuit breaker that protects the transformer if lights
with improper wattage ratings have been installed.
Check this circuit breaker before replacing the
transformer. Refer to the Proofer Lights Circuit
Breaker section of this manual.
1. Place the Power ON/OFF Switch in its OFF
position, and follow the proper Lockout/Tagout
procedures.
2. Open the Rear Access Panel. Refer to the
PANELSAND COVERS section of the manual
for instructions.
3. Tag and disconnect failed transformer wires.
4. Remove and retain the screws securing the
transformer.
Proofer and Oven Light Transformers
5. Reusing thescrews, attach thenew transformer
6. Referring to the tags, connect the new
transformer’s wiring.
7. Restore power to the unit and verify that the

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Proofer/Oven lights are working properly.
Oven Door Switch
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
Note: The Oven Door Switch is connected to the
PC I/O Board.
OVEN FRAME
Oven Door Switch Location
1. Place the unit’s Power ON/OFF Switch in its
OFF position, and follow the proper Lockout/
Tagout procedures.
2. Open the electrical compartment; refer to
the PANELS AND COVERS section of the
manual for instructions.
3. Tag and disconnect the Oven Door Switch
wires.
4. Remove the screws securing the Oven Door
Switch assembly to the oven frame.
OVEN FRAME
Remove Screws from Oven Frame
5. Pull switch down and out of the Oven Frame.
6. Reverse this procedure to install a new Oven
Door Switch assembly.
NOTE: Take care in reattaching wires. Swapping
wires will cause the oven to operate incorrectly.
7. Restore power to the unit, turn the oven on and
open the oven door. If the switch is working
properly the oven blower will turn off.
Door Switch Only Removal
1. To remove the door switch only, tag and
disconnect the Oven Door Switch wires.
2. Loosen and remove the 2 machine screws and
nuts securing the Door Switch to the bracket.
Remove Door Switch from Assembly Bracket
3. Remove the Door Switch.
4. Reverse steps 1through 3to installreplacement
door switch.
NOTE: Take care in reattaching wires. Swapping
wires will cause the oven to operate incorrectly.

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Left Side Louvered Access Panel
B
A
A. USB Port
B. ON/OFF Switch
USB Port
WARNING
BEFORE PERFORMING ANY SERVICE
THAT INVOLVES ELECTRICAL
CONNECTION OR DISCONNECTION
AND/OR EXPOSURE TO ELECTRICAL
COMPONENTS, ALWAYS FOLLOW
THE ELECTRICAL LOCKOUT/TAGOUT
PROCEDURE. DISCONNECT ALL CIRCUITS.
FAILURE TO COMPLY CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH.
The USB Port is mounted on the louvered panel
on the left side of the unit.
1. Place the unit’s Power ON/OFF Switch in the
OFF position, and follow the proper Lockout/
Tagout procedures.
2. Remove the two screws securing the louvered
panel and open panel to access the USB Port.
Remove Left Side Louvered Panel
3. Open the Control Access Panel; refer to the
PANELSAND COVERS section of the manual
for instructions.
CAUTION: DO NOT power on the unit while
the Control Panel is in the open
position.
4. Disconnect the USB Port wire connector from
back of Touchpad Controller.
To Touchpad Controller
USB Port
Connector
USB Port
USB Port Electrical Connection
5. Remove the 2 screws securing the USB Port
to the Louvered Panel.
Remove USB Port
6. Reverse these procedures to install replacement
USB Port.