A.J.Antunes MT-12 Technical manual

1
P/N 1010610 Rev. Q 10/15
Original Instructions - McDonald’s
MUFFIN TOASTER
MODEL MT-12
Mfg. Numbers 9200131, 134, 136, 137, 138, 140, 144, & 150
Place this manual in the Toaster section
of your Equipment Manual.
Manufactured exclusively for
McDONALD’S®
BY
A.J. ANTUNES & CO.
180 KEHOE BLVD.
CAROL STREAM, ILLINOIS 60188, U.S.A.
PHONE: [phone]
TOLL FREE: 1-877-392-7854 (USA Only)
FAX: [phone]
www.ajantunes.com
TABLE OF CONTENTS
This manual is for the exclusive use of licensees and employees of McDonald’s Systems, Inc. © McDonald’s Corporation All Rights Reserved
IMPORTANT
Keep these instructions for future reference. If the unit changes ownership,
be sure this manual accompanies the equipment.
Owner Information .....................................................2
General......................................................................2
Warranty Information.................................................2
Service/Technical Assistance ....................................2
Important safety information.....................................3
Specifications.............................................................5
Electrical Ratings.......................................................5
Electrical Cord & Plug Configurations.......................5
Dimensions................................................................6
Installation...................................................................7
Unpacking..................................................................7
Location.....................................................................7
Operation.....................................................................8
Hi-Limit Reset Button ..............................................10
Maintenance..............................................................10
Maintenance Schedule............................................10
Function of Diagnostic LEDs...................................12
Troubleshooting .......................................................13
Replacement parts...................................................16
Wiring Diagrams.......................................................19
NOTES.......................................................................20
LIMITED WARRANTY
The Antunes Food Service Equipment Division of A.J. Antunes & Co. provides the following limited warranty to the original purchaser of all McDonald’s Equipment.
All components are warranted against defects in the material and workmanship for a period of two (2) years from date of original installation.
If any part becomes defective during period of this Warranty, Antunes Food Service will pay negotiated straight time labor costs to an Authorized Service Agent to
replace the part, plus travel expenses up to 50 miles/80 km, 1 hour each way (100 miles/160 km, 2 hours round trip).
Antunes Food Service reserves the right to make changes in design or add improvements on any products. The right is always reserved to modify Equipment
because of factors beyond our control and government regulation. Changes to Equipment do not constitute a warranty charge.
This warranty is exclusive and is in lieu of all other warranties, expressed or implied, including any implied warranty of merchantability or fitness for a particular pur-
pose, each of which is expressly disclaimed. The remedies described above are exclusive, and in no event shall A.J. Antunes & Co. or any of its Divisions be liable
for special consequential or incidental damages for the breach or delay in the performance of this warranty.
WARRANTY EXCLUSIONS
• The cost of Installation.
• Equipment that has been damaged due to shipment. Purchaser should
make damage claim directly upon carrier.
• Alteration, misuse, abuse.
• Improper storage or handling.
• Improper maintenance.
• Failure to follow proper Installation instructions, including electrical connec-
tion.
• Improper or unauthorized repairs.
• Scheduled Maintenance procedures as outlined in your MRC Card.
• This Warranty does not cover Consumable items.
• Water pressure problems or contamination problems such as foreign material
in water lines or inside solenoid valves due to an incoming water source.
• Overtime or Holiday charges.
• Mileage over 50 miles/80 km (100 miles/160 km round-trip), or travel time
over two (2) hours.
• Freight, foreign, excise, municipal or other sales or use taxes.
• Consequential damages such as loss of profit, loss of time, the cost of repair-
ing or replacing other property which is damaged, or any other incidental
damage of any kind.
Testing & Certification
ITS
geprufte
Sicherheit
Scan with mobile device or enter URL
for product and service information.
A.J. Antunes & Co.
MT-12
http://tiny.cc/ajaMT12

MUFFIN TOASTER MT-12
2P/N 1010610 Rev. Q 07/16
McDonald’s
Service/Technical Assistance
If you experience any problems with the installation
or operation of your unit, contact your local Roundup
Authorized Service Agency.
Fill in the information below and have it handy when
calling your Authorized Service Agency for assistance.
The serial number is on the specification plate located
on the rear of the unit.
Purchased From:
Date of Purchase:
Model No.:
Serial No.:
Mfg. No.:
Refer to the service agency directory packaged with
your manual and fill in the information below:
Authorized Service Agency
Name:
Phone No.:
Address:
Use only genuine Roundup replacement parts in this
unit. Use of replacement parts other than those sup-
plied by the manufacturer will void the warranty. Your
Authorized Service Agency has been factory trained
and has a complete supply of parts for this toaster.
You may also contact the factory at 1-630-784-1000
if you have trouble locating your Authorized Service
Agency.
General
The Muffin Toaster Model MT-12 is designed to toast 6
full English muffins (12 halves) at one time. A temper-
ature sensing solid state control measures the internal
temperature of the toaster and adjusts the toast-
ing time automatically to toast muffins faster during
heavier use. The toaster signals the operator with an
audible beep and a ready light when muffins are ready.
The toaster is capable of producing up to 324 muffins
per hour. 6 muffin halves or less is a partial load and
7–12 muffin halves is a full load.
To conserve energy, when the toasting chamber is
empty, the toaster idles at 600 watts. This represents
a 75% reduction in operational power consumption.
This manual provides the safety, installation, and oper-
ating procedures for the unit. We recommend that all
information contained in this manual be read prior to
installation and operation.
This unit is manufactured from the finest materials
available and is assembled to Roundup’s strict quality
standards. It has been tested at the factory to ensure
dependable trouble-free operation.
Warranty Information
Please read the full text of the Limited Warranty in this
manual.
If the unit arrives damaged, contact the carrier imme-
diately and file a damage claim with them. Save all
packing materials when filing a claim. Freight damage
claims are the responsibility of the purchaser and are
NOT covered under warranty.
The warranty does NOT extend to:
• Damages caused in shipment or damage as
result of improper use.
• Installation of electrical service.
• Normal maintenance as outlined in this manual.
• Malfunction resulting from improper maintenance.
• Damage caused by abuse or careless handling.
• Damage from moisture into electrical
components
• Damage from tampering with, removal of, or
changing any preset control or safety device.
OWNER INFORMATION

MUFFIN TOASTER MT-12
3
P/N 1010610 Rev. Q 07/16
McDonald’s
WARNING
GENERAL WARNING. Indicates information impor-
tant to the proper operation of the equipment. Failure
to observe may result in damage to the equipment
and/or severe bodily injury or death.
Throughout this manual, you will find the following safety words and symbols that signify important safety issues with
regards to operating or maintaining the equipment.
WARNING
ELECTRICAL WARNING. Indicates information relat-
ing to possible shock hazard. Failure to observe may
result in damage to the equipment and/or severe
bodily injury or death.
CAUTION
GENERAL CAUTION. Indicates information important
to the proper operation of the equipment. Failure to
observe may result in damage to the equipment.
WARNING
HOT SURFACE WARNING. Indicates information
important to the handling of equipment and parts.
Failure to observe may result in personal injury.
IMPORTANT SAFETY INFORMATION
In addition to the warnings and cautions in this manual,
use the following guidelines for safe operation of the
unit.
• Read all instructions before using equipment.
• For your safety, the equipment is furnished with
a properly grounded cord connector. Do NOT
attempt to defeat the grounded connector.
• Install or locate the equipment only for its intend-
ed use as described in this manual. Do NOT use
corrosive chemicals in this equipment.
• Do NOT operate this equipment if it has a dam-
aged cord or plug, if it is not working properly, or
if it has been damaged or dropped.
• This equipment should be serviced by qualified
personnel only. Contact the nearest Authorized
Service Agency for adjustment or repair.
• Do NOT block or cover any openings on the unit.
• Do NOT immerse cord or plug in water.
• Keep cord away from heated surfaces.
• Do NOT allow cord to hang over edge of table or
counter.
• Do NOT clean this appliance with a water jet.
• This appliance is not to be used by persons
(including children) with reduced physical, sen-
sory, or mental capabilities, or lack of experience
and knowledge unless they have been given
supervision or instructions.
• Do not allow children to play with the appliance.
The following warnings and cautions appear throughout
this manual and should be carefully observed.
• Turn the power off, unplug the power cord, and
allow unit to cool down before performing any
service or maintenance.
• The procedures in this manual may include
the use of chemical products. These chemical
products will be highlighted with bold face let-
ters followed by the abbreviated HCS (Hazard
Communication Standard). See Hazard
Communication Standard manual for the appro-
priated Material Safety Data Sheets (MSDS).
• The equipment should be grounded according to
local electrical codes to prevent the possibility of
electrical shock. It requires a grounded recep-
tacle with separate electrical lines, protected by
fuses or circuit breaker of the proper rating.
• Bread may burn. Therefore toasters must not be
used near or below curtains or other combustible
walls and materials. Failure to maintain safe
operating distances may cause discoloration or
combustion.
• This appliance is NOT intended for use by
persons (including children) with reduced physi-
cal, sensory, or mental capabilities, or lack of
experience and knowledge, unless they have
been given supervision or instruction concern-
ing use of the appliance by a person responsible
for their safety. Children should be supervised to
ensure that they do NOT play with the appliance.

MUFFIN TOASTER MT-12
4P/N 1010610 Rev. Q 07/16
McDonald’s
CAUTION
All electrical service connections must be in accor-
dance with local electrical codes and any other appli-
cable codes.
WARNING
ELECTRICAL SHOCK HAZARD. FAILURE TO
FOLLOW THE INSTRUCTIONS IN THIS MANUAL
COULD RESULT IN SERIOUS INJURY OR DEATH.
• Electrical ground is required on this appliance.
• Do NOT modify the power supply cord plug. If
it does not fit the outlet, have a proper outlet
installed by a qualified electrician.
• Do NOT use an extension cord with this appliance.
• Check with a qualified electrician if you are unsure
if the appliance is properly grounded.
IMPORTANT SAFETY INFORMATION (continued)
IMPORTANT
A.J. Antunes & Co. reserves the right to change specifications and product design without
notice. Such revisions do NOT entitle the buyer to corresponding changes, improvements,
additions, or replacements for previously purchased equipment.
IMPORTANT
Keep these instructions for future reference. If the unit changes ownership,
be sure this manual accompanies the equipment.
WARNING
If the supply cord is damaged, it must be
replaced by the manufacturer, its service
agent, or a similarly qualified person in order
to avoid a hazard.
WARNING
Do NOT modify the power supply cord plug.
If it does not fit the outlet, have a proper
outlet installed by a qualified electrician.
WARNING
Do NOT use extension cords with this unit.
WARNING
Check with a qualified electrician if you are
unsure if the appliance is properly grounded.
WARNING
Do NOT clean this appliance with a water jet.
WARNING
Provide at least 1 inch clearance all around
the unit.
WARNING
This equipotentiality symbol shows
external functional grounding
connection.

MUFFIN TOASTER MT-12
5
P/N 1010610 Rev. Q 07/16
McDonald’s
SPECIFICATIONS
Electrical Specifications & Plug Configuration
Model &
Mfg. No Volt Watts Amps Hz. Plug Description
MT-12
9200131 200-240 3400 17.0 50/60
Marechal
Pin & Sleeve
32 Amp.,
220-250 Volt
MT-12
9200134 200-240 3400 17.0 50/60 L6-30P,
30 Amp.,
250 Volt
MT-12
9200136 200-240 3400 17.0 50/60 HBL Pin & Sleeve 30 Amp., 250 Volt
MT-12
9200137 230 3400 14.8 50/60 IEC-309 230 Volt. Non- Molded Plug
MT-12
9200138 220-240 3400 14.8 50/60 IEC-309 16 Amp., 240 Volt Pin & Sleeve
MT-12
9200140 200-240 3400 17.0 50/60 IEC-309 32 Amp., 250 Volt Pin & Sleeve
MT-12
9200144 200-240 3400 17.0 50/60 L6-20P, 20 Amp., 250 Volt
MT-12
9200150 208-240 3400 16.3 50/60 Marechal Pin & Sleeve 32
Amp., 220-250 VAC (New
Zealand)

MUFFIN TOASTER MT-12
6P/N 1010610 Rev. Q 07/16
McDonald’s
Dimensions
SPECIFICATIONS (continued)
4-7/16"
(112.7 mm)
26-5/8"
(650.8 mm)
26-5/8"
(650.8 mm)
13-5/8"
(346 mm)
15-5/8"
(398.8 mm)
14-3/4"
(374.6 mm)
8-1/8"
(206.4 mm)
7-1/8"
(180.99 mm)

MUFFIN TOASTER MT-12
7
P/N 1010610 Rev. Q 07/16
McDonald’s
Unpacking
1. Remove unit and all packing materials from
shipping carton.
2. Open the large box. It should contain the
following items:
• Muffin Toaster with Crumb Tray
• Information Packet
3. Remove information packet.
4. Remove all packing materials and protective
coverings from the unit.
NOTE: If any parts are missing or damaged, con-
tact A.J. Antunes IMMEDIATELY at 1-630-784-1000
or in the U.S. or Canada, 1-800-253-2991 toll free.
5. Clean the toaster with a damp cloth. Remove
and clean the crumb tray.
Location
When placing the toaster into service, pay attention to
the following guidelines.
• Make sure the power is off and the unit is at room
temperature before plugging in the power cord.
• Do NOT block or cover any openings on the unit.
• Do NOT immerse the power cord or plug in water.
• Keep the power cord away from heated surfaces.
• Do NOT allow the power cord to hang over edge
of table or counter.
Plug the power cord into the appropriate power outlet.
Refer to the specification plate for the proper voltage.
INSTALLATION
Figure 1. Muffin Toaster MT-12
CAUTION
All electrical service connections must be in accor-
dance with local electrical codes and any other appli-
cable codes.
Partial
Load
READY
Crumb
Tray
Front Door
Control Knob
Partial Load
Indicator Light
(Amber)
Indicator Light (Green)
Removable
Plate
Partial Load Timer Control Knob

MUFFIN TOASTER MT-12
8P/N 1010610 Rev. Q 07/16
McDonald’s
OPERATION
Partial
Load
READY
Turn
Power Switch ON
(Back of Unit)
The unit beeps twice and
both lights blink twice.
Allow the units to warm up
for 30 minutes.
A
B
1
FULL
LOAD
PARTIAL
LOAD
2
Partial
Load
READY
Press the
Partial Load button
ONLY when toasting
a partial load
of product.
3
Partial
Load
READY
Push the Front Door
Control Knob IN
to UNLOCK
the door.
Next, slide the
loaded Spatula
into the unit.
4
NOTE: If the self-test fails, a series of beeps
will sound (see Diagnostic Flow Chart in
Troubleshooting).
NOTE: When the Amber light is on, a Partial Load
Cycle is selected. When this light is off, a Full
Load Cycle is selected.
NOTE: Always use a Spatula to insert and remove
product from the unit. This is the only approved
method for loading and unloading product into the
toaster.
CAUTION
The Crumb Tray and Removable Plate will be very hot
when the unit is in operation. Do NOT use the Crumb
Tray and Removable Plate as a means to load/unload
product from the unit.

MUFFIN TOASTER MT-12
9
P/N 1010610 Rev. Q 07/16
McDonald’s
Partial
Load
READY
Pull the Front Door
Control Knob OUT
to LOCK the door.
Next, Pull out the
Spatula. The locked
door keeps the
product inside the
toaster.
Do NOT toast product
with the spatula
inserted in the toaster!
Partial
Load
READY
TOASTING TIMES:
Full Load = 90 - 130 seconds
Partial Load = 85 - 125 seconds
5
6
OPERATION (continued)
NOTE: The indicator lights blinks and the Audio
Signal beeps when the toast cycle completes.
Partial
Load
READY
Remove the
Spatula out of
the unit carefully.
B
Push the Front Door
Control Knob IN
to UNLOCK
and open the
Front Door.
A
8
9
Remove product from the spatula. The unit is ready
for another cycle.
Partial
Load
READY
Carefully insert the
Spatula into the unit.
This transfers the
the product onto
the spatula.
7

MUFFIN TOASTER MT-12
10 P/N 1010610 Rev. Q 07/16
McDonald’s
OPERATION (continued)
MAINTENANCE
Hi-Limit Reset Button
A hi-limit thermostat will turn off electrical power to the
heater and control circuits if the unit overheats. To
reset the thermostat, allow sufficient time (about 45
minutes) for the unit to cool down, remove the cap and
press the red reset button located on the side of the
unit (Figure 2).
If the unit requires continuous resetting, contact your
Authorized Service Agency. Figure 2. Hi-Limit Reset Button
Partial
Load
READY
Hi-Limit Reset Button
WARNING
Turn the power off, unplug the power cord, and allow
the unit to cool down before performing any service or
maintenance.
WARNING
Inspection, testing, and repair of electrical equipment
should only be performed by qualified service
personnel.
CAUTION
Chlorides or phosphates in cleaning agents (e.g.
bleach, sanitizers, degreasers, or detergents) could
cause permanent damage to stainless steel
equipment.
The damage is usually in the form of discoloration,
dulling of metal surface finish, pits, voids, holes, or
cracks.
This damage is permanent and not covered by war-
ranty. The following tips are recommended for mainte-
nance of your stainless steel equipment:
• Always use soft, damp cloth for cleaning, rinse with
clear water and wipe dry. When required, always
rub in direction of metal polish lines.
• Stains and spots should be removed using a
vinegar solution.
• Finger marks and smears should be rubbed off
using soap and water.
CAUTION
If a chemical cleaner is used, be sure it is safe to use
on cast aluminum. Observe all precautions and warn-
ings on product label.
Maintenance Schedule
DAILY – CLEAN CRUMB TRAY
1. Turn the power switch to the off position. Unplug
the power cord from the wall. Allow the toaster
and plate to cool for at least 30 minutes.
NOTE: The muffin toaster may be hot. Make sure
the toaster and plate are cool enough to handle
before you begin cleaning.
2. Put on neoprene gloves. Remove the Spatula
and set aside. Then, lift the Crumb Tray to
remove it from the muffin toaster. Remove the
Plate from the Crumb Tray.
3. Use a clean, sanitizer soaked towel to wipe the
surface of the Plate.
4. Inspect the Plate for carbon build-up. Wipe the
plate with a clean, damp cloth. IF the plate has
excessive carbon build-up, apply McD Hi-Temp
Grill Cleaner to the grill surface. Wipe the grill
surface with a clean, sanitized grill cloth. Rinse
the grill surface with water. Wipe the grill with a
clean, sanitized towel to remove all cleaner resi-
due.
5. Using a clean, sanitize towel, wipe the crumbs
from the Crumb Tray. If necessary, wash the
Crumb Tray and spatula at the 3 compartment
sink.
8. Place the Plate back onto the Crumb Tray. Slide
the Crumb Tray into the muffin toaster. Then
place the Spatula into the muffin toaster
NOTE: The Plate is reversible. Rotate the Plate from
side-to-side between cleanings. This extends the
life of the Plate.

MUFFIN TOASTER MT-12
11
P/N 1010610 Rev. Q 07/16
McDonald’s
Rear Panel
Full Load Temp. Pot
Partial Load Temp. Pot
Solid State Relay
Power Switch
Terminal Block
Control Board
DIP Switches
Figure 3. Adjusting Timer on Real Panel Assembly
Partial Load Temp. Pot
Full Load Temp. Pot
Power
Switch
Power Cord
Figure 4. Rear Panel Assembly
MAINTENANCE (continued)
MONTHLY – CHECK CALIBRATION
NOTE: You will need a stopwatch
1. Turn the power on.
2. Preheat the toaster for approximately 30 minutes.
Close the front door and wait for the Audio Signal
to beep. When the Audio Signal beeps, open the
front door, then close it again. When the Audio
Signal beeps a second time, open the front door.
3. Load 12 muffin halves into the toaster, close the
front door, and start and start the stopwatch.
4. Check the time on the stopwatch when the Audio
Signal beeps.
NOTE: The Audio Signal should beep and the
Ready light should come on within 90 to 130
seconds.
5. Open the front door to stop the Audio Signal and
to turn off the Ready light.
6. Remove muffins and reload with 6 muffin halves.
7. Close the front door, press and release the Partial
Load Control Knob on the right front of the toaster
until the Amber light is lit (Figure 1). Start the
stopwatch.
8. Check the time on the stopwatch when the Audio
Signal beeps.
NOTE: The Audio Signal should beep and the
Ready light should come on within 85 to 125
seconds.
9. Open the front door to stop the Audio Signal and
to turn off the Ready light.
10. If the times are correct, calibration is complete. If
the times are not correct, adjust the timers locat-
ed at the rear of the toaster (Figure 3)
NOTE: If the toasting time is still incorrect, contact
the factory for assistance.
WARNING
During this procedure, hot toasting surfaces will be
exposed. Use extreme care to avoid personal injury.

MUFFIN TOASTER MT-12
12 P/N 1010610 Rev. Q 07/16
McDonald’s
MAINTENANCE (continued)
Function of Diagnostic LEDs
This section describes the Diagnostic LEDs and their
functions. The Diagnostic LEDs are found at the back of
the unit.
Rear Panel Diagnostic LEDs
1234
567
Figure 5. Diagnostic LEDs
1 Full Load Switch Light - ON when the Full Load
Switch is closed.
2 Thermocouple Fault - ON when the thermocouple
is disconnected or damaged. The toaster will not
heat.
3 Solid State Relay On - ON when power is sent
to the Solid State Relay. This LED pulses rapidly
during operation.
4 Ready Light - ON when power is sent to the
Ready Light.
5 Partial Load Switch - ON when the Partial Load
Switch is closed.
6 Audio Signal - ON when power is sent to the
Audio Signal.
7 Partial Load Light - ON when power is sent to the
Partial Load Light.
MADE IN U.S.A.
ANTUNES CONTROLS
SFT00-0216-B
1
YELLOWRED
12
PARTIAL
DS1
-+
LED
DONE
SW
PARTIAL
BUZZER
ON
SSR THERM.
FAULT. SW
FULL
PARTIAL
FULL
200
HIGH
B
D
A
C
LOW
220
+
-
DS1
C35
C31
J3
J2
C7
C22
C4
C12
C8
C18
C2
C1
C6
C5
C27
C15
C19
C11
C23
C28
C21
C30
C24
C33
C29
C34
C26
C16
C20
C32
C25
C17
C9
C13
C3
C14
C10
CRY1
CR8
CR10
CR9
BR2 BR1
L2
L6
L5
L3
U5
L4
L1
CR13 CR14 CR15 CR16
CR17
CR18
CR19
U2
U4
U3
U1
R27
R29
R46
R41
R51
R31 R20
R43
R40
R44
R38
R36
R47
R49
R42
R52
R50
R39
R14
R37
R24
R23
R10
R48
R54
R53
R13
R4
R34
R7
R21
R5
R2
R18
R11
R8
R15
R33
R22
R45
R12
R32
R9
R6 R3
R17
R35
R30
1 432
P1
1
P2
1
P4
U6
Q3
Q2
Q1
Q4
VAR1
VAR2
VRL1
P3
123
R16
R1
123
LOW HIGH
200220
A B
C D
Control Board
Dip Switch Settings
Check your Control Board assembly to insure the Dip
Switch settings are correct.
NOTE: Refer to the table below for a listing of
Manufacturing numbers that use the 220 or 200 set-
ting.
DO NOT USE HIGH SETTING.
Dip Switches
Mfg. No. 200 or
220? LO or High?
9200131 200 LO
9200134 200 LO
9200136 200 LO
9200137 220 LO
9200138 220 LO
9200140 200 LO
9200144 200 LO
9200150 200 LO

MUFFIN TOASTER MT-12
13
P/N 1010610 Rev. Q 07/16
McDonald’s
Diagnostic Flow Chart
TROUBLESHOOTING
Turn toaster on,
toaster performs
self-test
Toaster passes
self-test
Both indicator lights ash and
an Audio Signal beeps twice
to indicate successful self-test
Heats to more than 105°F
(65°C) but less than 750°F
(400°C) in 30 minutes
BEEP CODES
2 Beeps = Voltage too low
3 Beeps = Toaster temperature more than 750°F
(400°C) after 30 minutes
4 Beeps = Toaster temperature less than 150°F
(65°C) after 30 minutes
5 Beeps = Thermocouple disconnected or broken
NOTE: All beep codes are followed by a 2 sec-
ond pause, then repeated.
IMPORTANT
Beep Codes
(errors) can occur
any time during
operation.
Less than 150° F (65°C)
(Control turns solid state
relay off). Audio Signal
beeps 4 times, waits 2
seconds, beeps 4 times,
waits 2 seconds, and
continues until unit is
turned off
More than 750°F (400°
C) (control turns solid
state relay off) Audio
Signal beeps 3 times,
waits 2 seconds, beeps
3 times, waits 2 seconds
and continues until unit
is turned off
Refer to
Troubleshooting
Yes
Yes
Yes
No
No No
Heats to more than 105°F
(65°C) but less than 750°F
(400°C) in 30 minutes
Yes
Door is opened during
cook cycle - Audio Signal
beeps once every second
door is open
No
Door is open for more than 8 consecu-
tive seconds during cook cycle - Audio
Signal beeps very rapidly 15 times
- cook cycle is automatically cancelled.
No
Yes Yes
Toaster times-out for:
Partial Load (85-125 sec) or
Full load (90-130 sec.)
Unit beeps 2 times per second until front door is opened.
NOTE: Push partial load control knob to turn off partial load light. Product is
too light
No Product is
too dark
No
Refer to Troubleshooting
Yes
Product toasted properly
Yes NOTE: If your toasting times
differ from those shown, contact
the factory for assistance.

MUFFIN TOASTER MT-12
14 P/N 1010610 Rev. Q 07/16
McDonald’s
TROUBLESHOOTING (continued)
Problem Possible Cause Corrective Action
Toaster fails to operate (no
heat, fan not running). No power. Make sure plug is locked into position and the power is on. Check building
circuit breaker.
Defective receptacle or power cord plug. Plug into different receptacle.
Replace cord.
Loose wire connections. Check and tighten all connections.
Not heating. Fan is working. Hi-Limit thermostat is tripped or
defective. Turn toaster off for 20-30 minutes and then press the reset button.
Replace Hi-Limit thermostat.
Removable Plate is scuffed or scratched. Replace Removable Plate.
Removable Plate is too dull has excess
carbon build-up. Clean or replace Removable Plate.
Muffins too light or too dark at
Audio Signal. Using refrigerated or frozen muffins. Muffins must be at room temperature before toasting. Allow a two day old
rotation when using fresh muffins.
Incorrect setting or regional preference
dictates an adjustments of the timer.
Approximate times are:
Partial Load - 85-125 seconds
Full Load - 90-130 seconds
NOTE: If your toasting times differ
from the values above, contact the
factory for assistance.
Adjust full or partial load timers as
needed.
Toaster does not operate
properly when it is initially
installed.
Toaster selected/shipped is not for the
electrical service as this location. Check toaster identification plate and refer to the Electrical Specifications of
this Manual.
Toaster does not operate
after the replacement of a
Control Board.
One or more electrical service dip
switches are improperly set for the loca-
tions electrical service.
Refer to the Dip Switch setting instruc-
tions provided in this manual.
Toaster will not operate (no
heat and no fan operation)
LED light on and Rocker
Switch not lit.
Unit not turned on. Confirm that the power is on.
No Power. Circuit Breaker is off or
tripped. Reset Circuit Breaker. Contact your maintenance person or Authorized
Service Agency if it trips again.
Rocker Switch is inoperable. Replace Rocker Switch.
Poor plug to receptacle connection. Lock plug into receptacle.
Damaged or defective power cord. Inspect power cord, replace if needed.
Damaged or defected cord, plug, and/or
pins. Inspect plug and pins. Replace if needed.
Damaged or defective receptacle. Inspect receptacle. Call your electrician.
Loose electrical connection. Contact your maintenance person or
Authorized Service Agency for service.

MUFFIN TOASTER MT-12
15
P/N 1010610 Rev. Q 07/16
McDonald’s
TROUBLESHOOTING (continued)
Problem Possible Cause Corrective Action
Toaster not heating (but fan is
working). Hi-Limit control is tripped or defective. Turn toaster off for 30 minutes and then reset. If the Hi-Limit control trips repeat-
edly, contact your maintenance person or
Authorized Service Agency.
Loose/defective electronic
connections. Contact your maintenance person or Authorized Service Agency.
Heating element/coil is broken/open.
Solid State Heater Relay is
defective.
Control Board is defective.
Fan not running but toaster is
heating. Fan is dirty or defective. Clean or replace defective fan.
No Audio Signal, but Ready
Light works. Defective Audio Signal. If Audio Diagnostic LED is on but there is no Audio Signal, replace the Audio
Signal.
No Ready Light but Audio
Signal works. Defective Ready Light. If Ready Light Diagnostic LED is on, but the Ready Light is not, replace the Ready
Light.
No Audio Signal or Ready light
on either Full or Partial Load
cycles.
Control Board is defective. Replace the Control Board.
Front Door will not open or
close properly. Door Push Rod is damaged. Remove left cover and check Door Push rod for free movement of door. Straighten
or replace rod as required.
Have your maintenance person or
Authorized Service Agency straighten or
replace the Door Push Rod as required.
Heating element/coil is on
continuously. Defective Solid State Relay. Contact your maintenance person or your Authorized Service Agency.
Defective Control board.
Only half the element coil is
working. Loose/defective electrical wiring con- nection. Check wiring connections at element/coil
Heating element/coil is broken/open Replace the heating element/coil.

MUFFIN TOASTER MT-12
16 P/N 1010610 Rev. Q 07/16
McDonald’s
1 0502891 Cover, Left 1
2 0800298 Rod, Door 1
3 0400283 Insulation, Side 2
4 0502868 Guide, Actuator 1
5 210K230 Bumper, 1 Leg Kit (pack of 4) 1
6 0502884 Pan, Base 1
7 2100132 Knob, Black 2
8 0020186 Front Door 1
9 05K2880 Plate, Removable 1
10 0502889 Crumb Tray 1
11 0502871 Retainer, Heater 1
12 7000113 Heating Assy. Kit, 200V 1
(Mfg. No. 9200131, 9200134,
9200136, 9300140, 9200144,
& 9200150)
7000114 Heating Assy. Kit, 220V 1
(9200137 & 9200138)
13 0502885 Panel, Face 1
14 0502881 Housing, Top 1
15 0502890 Cover, Right 1
16 4050180 Heat Sink 1
17 7000315 Relay, Solid State, Double Pole 1
18 4010137 Switch, Rocker (Power On/Off) 1
19 0400315 Strain Relief 1
20 7000464 Power Cord Assy (MT-12RR 1
Mfg. No. 9200132) L6-30P 30 A
250 V Right Angle Twist Lock
7000463 Power Cord Assy (MT-12RD 1
Mfg. No. 9200136)
Hubble Pin & Sleeve 30A 250V
7000465 Power Cord Assy (MT-12RS 1
Mfg. No. 9200134) L6-30P 30A
250V Straight Twist Lock
0700437 Power Cord Assy (MT-12HI 1
Mfg. No. 9200138) Harmonized,
IEC-309 16A 230V
0700587 Power Cord Assy (MT-12HB
Mfg. No. 9200131) Harmonized,
Marechal Pin & Sleeve 32A 230V
Australia
0700588 Power Cord Assy (MT-12HJ 1
Mfg. No. 9200140) Harmonized,
IEC-309 32A 230V
0700552 Power Cord Assy (MT-12CU 1
Mfg. No. 9200144) Japan, L6-20P
20A 250V Straight Twist Lock
0700699 Power Cord Assy (MT-12HM 1
Mfg. No. 9210150) Harmonized,
Marechal Pn & Sleeve 220-250 VACT
32 Amp (New Zealand)
0700442 Power Cord Assy. (MT-12HI 1
Mfg. No. 9200137) IEC-309
230 VAC Non-molded (China Only)
22 0502886 Panel, Rear 1
23 7000925 Control Board Kit 1
24 7000156 Audio Signal 1
25 050K128 Sensor Bracket Kit 1
26 0011036 Fan Assy. 1
27 4010103 Micro Switch 1
28 7000342 Indicator Light, Green & Amber 1
30 0800297 Rod, Partial 1
31 7000344 Hi-Limit Kit 1
32 0502873 Bracket, Hi-Limit 1
33 4010171 Switch, Push-Push 1
34 7000348 Thermocouple 1
35 406K006 Terminal Block Kit 1
36 4010170 Transformer 1
37 1000936 Label, Front Panel 1
38 0600113 Spring, Front Door 1
39 040P119* Bushing, Shorty, 5/8” 1
40 7000401 Bushing & Retainer Kit 1
41 301P106* Weld Nut 1
42 306P102* Lockwasher, #6 1
43 306P115 Screw, #6-32 x 1” 1
44 306P123* Screw, #6-32 x 7/8” 1
45 306P130* Nut, Hex, KEPS, #6-32 1
46 308P103* Screw, #8-32 x 1/4” 1
47 308P124* Screw, #8-32 x 1/2”, One-way 1
48 308P133* Screw, #8-32 x 1/4” 1
49 308P143* Nut, Hex, KEPS, #8-32 1
50 308P151* Screw, SEMS, #8-32 x 5/16” 10
51 306P104* Screw, #6-32 x 1/4” 1
52 300P117* Washer, Retaining 1
53 040P111* Bushing, Shorty, 1/2” 1
54 310P140* Washer, Flat, #10 1
55 4060374 Ground Lug 1
56 0020995 Side Panel (RH) Weldment 1
57 0020996 Side Panel (LH) Weldment 1
* Available only in packages of 10.
Item Part Description Qty.
No. Item Part Description Qty. No.
REPLACEMENT PARTS

MUFFIN TOASTER MT-12
17
P/N 1010610 Rev. Q 07/16
McDonald’s
Partial
Load
1
3
5
6
7
8
9
10
11
12
13
14
15
28
28 30 31
32 33
56
40
40
46
46
H
50
50 50
50
50
50
52
53
View A-Next Page
57
37
7
5
REPLACEMENT PARTS (continued)

MUFFIN TOASTER MT-12
18 P/N 1010610 Rev. Q 07/16
McDonald’s
REPLACEMENT PARTS (continued)
12
3
4
5
7
16 17
18
22 23,
24
25
26
27
34
35
36
20
38
39
40
40
41
42
43
44
45
46
46
48
49
50
57
50
50
50 50 50
51
52
54
19
55
View A
NOTE: Refer to the Replacement
Parts list in this manual for a
complete list of cord and plug
configurations

MUFFIN TOASTER MT-12
19
P/N 1010610 Rev. Q 07/16
McDonald’s
WIRING DIAGRAMS
WIRING DIAGRAM
+
-
+
-
UNLESS OTHERWISE SPECIFIED.
NOTE: ALL WIRES TO BE 14 GA. TGGT-250°C
14 GA. AWM-105°C
NAT
WHT WHT/BLU
BLK/BRN GRN/YEL
BLK
BLK BLK
BLK
1 42 3
NAT
GND
16 GA. AWM-105°C
GRN/YEL
BLK
WHT
16 GA. SF2-200°C
NAT
4 1
2
5
WHT
WHT
BLK
BLK
BOARD
CONTROL
LOAD
PARTIAL
LIGHT
READY
*WHT
BLK
*
FAN
HIGH LIMIT
*
HEATER
*
TERMINAL
SWITCH
BLOCK
POWER
#
IND.
LIGHT
5
1
6
10
1
PUSH
PUSH-
SWITCH
P4
P2P3
T/COUPLE 1 2
12 3 4 42 3
1
2
3
4
5
6
#
SWITCH
MICRO
#
9
7BLK
BLK
BRN
BRN
ORG
YEL
YEL
RED
WHT
#
#
RED
BLUE
=
WHT
WHTWHT
VIO
BLU
=
WHT
RELAY
*
A2
A1
B1
B2
TRANSFORMER
RF
BOARD
RELAY
T4
T3
T2
T1

MUFFIN TOASTER MT-12
20 P/N 1010610 Rev. Q 07/16
McDonald’s
NOTES