Page 1
Place this chapter in the OVEN section of the equipment manual.
WELLS MANUFACTURING
10 Sunnen Dr., St. Louis, MO 63143
telephone: 314-678-6314
fax: 314-781-2714
www.wellsbloomfield.com
OWNERS MANUAL
VENTED
CONVECTION OVEN
MODEL
M4200-4
Includes
Installation
Use & Care
Programming
Exploded View
Parts List
Wiring Diagram
903
M4200 Convection Oven
This instruction is for the exclusive use of licensees
and employees of McDonalds Systems, Inc.
IMPORTANT: DO NOT DISCARD THIS MANUAL
This manual is considered to be part of the appliance and is to be given to the OWNER or
MANAGER of the restaurant, or to the person responsible for TRAINING OPERATORS of
this appliance. Additional manuals are available from your WELLS DEALER.
THIS MANUAL MUST BE READ AND UNDERSTOOD BY ALL PERSONS U S ING OR
INSTALLING THIS APPLIANCE. Contact your WELLS DEALER if you have any
questions concerning installation, operation or maintenance of this equipment.
p/n 2M-Z19624 Rev. B M903 150731
Page 2
INTRODUCTION
IMPORTANT: Use only factory
authorized service parts.
For factory authorized service,
or to order factory authorized
replacement parts, contact your
Wells authorized service agency,
or call:
Wells Manufacturing
10 Sunnen Dr.,
St. Louis MO 63143 USA
Service Dept.
phone: (877) 242-0270
fax: (314) 781-2714
Thank You for purchasing this Wells Manufacturing appliance.
Proper installation, professional operation and consistent
maintenance of this appliance will ensure that it gives you the very
best performance and a long, economical service life.
This manual contains the information needed to properly install this
appliance, and to use and care for the appliance in a manner that
will ensure its optimum performance.
xi
M903 2M-Z19624 Owners Manual M4200-4
Page 3
TABLE OF CONTENTS
GENERAL
OPERATION
PROGRAMMING
MAINTENANCE
SERVICE
AGENCY LISTING INFORMATION 1
WARRANTY 2
PRECAUTIONS & GENERAL INFORMATION 3
SPECIFICATIONS 4
INSTALLATION 5
FEATURES & OPERATING CONTROLS
OVEN FEATURES 8
SMART CONTROLLER 10
OPERATION
QUICK-GLANCE OPERATING GUIDE 12
DAILY SET-UP 13
COOK CYCLE OPERATION 14
PROGRAMMING
IMPORTANT:
Programming to be performed by Qualified Personnel ONLY!
ENTER PROGRAMMING MODE 15
CHANGE PROGRAMMED SETTINGS 16
INSTALL OPERATING SYSTEMS SOFTWARE 18
TRANSFER MENUS FROM CARD TO OVEN 19
TRANSFER MENUS FROM OVEN TO CARD 19
DEFAULT SETTINGS 20
CLEANING INSTRUCTIONS 21
TROUBLESHOOTING SUGGESTIONS 23
PREVENTATIVE MAINTENANCE 24
TEMPERATURE CALIBRATION 25
HINGE ADJUSTMENT
EXPLODED VIEW and PARTS LIST 26
WIRING DIAGRAM M4200-4, 1 PHASE 30
M4200-4, 3 PHASE 31
M4200-4, 380/415 32
PARTS & SERVICE 33
CUSTOMER SERVICE DATA FORM 33
This appliance conforms to NSF Standard 4 for sanitation only if
installed in accordance with the supplied Installation Instructions and
maintained according to the instructions in this manual.
M4200 (domestic) ovens are and listed under UL File E6070
M903 2M-Z19624 Owners Manual M4200-4
for 208V and 240V.
M4200EU (European) ovens comply with standards
for 380-415V 3NAC
1
AGENCY LISTING INFORMATION
STD 4
E6070
E6070
Page 4
LIMITED WARRANTY STATEMENT
The
M4200 Convection Oven
to McDonald's, Inc. is warranted against defects in materials
and workmanship for a period of three years parts & one
year labor from the date of installation (
installation punch-tag on the equipment
the original purchaser:
All other equipment manufactured by WELLS for sale to
McDonald's, Inc. is warranted against defects in materials
and workmanship for a period of one year from the date of
installation (
equipment
as indicated by the installation punch-tag on the
),
and is for the benefit of the original purchaser:
THE FOREGOING OBLIGATION IS EXPRESSLY GIVEN
IN LIEU OF ANY OTHER WARRANTIES, EXPRESSED OR
IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE, WHICH ARE HEREBY EXCLUDED.
WELLS SHALL NOT BE LIABLE FOR INDIRECT, INCIDENTAL
OR CONSEQUENTIAL DAMAGES OR LOSSES FROM ANY
CAUSE WHATSOEVER.
This warranty is void if it is determined that upon inspection
by an Authorized Service Agency that the equipment has
manufactured by WELLS for
as indicated by the
), and is for the benefit of
sale
The prices charged by Wells for its products are based upon
the limitations in this warranty. Seller’s obligation under this
warranty is limited to the repair of defects without charge by
a Wells Authorized Service Agency or one of its subagencies. This service will be provided on customer’s premises for non-portable models. Portable models (a device
with a cord and plug) must be taken or shipped to the
closest Authorized Service Agency, transportation charges
prepaid, for services.
In addition to restrictions contained in this warranty, specific
limitations are shown below (Additional Warranty
Exclusions). Authorized Service Agencies are located in
principal cities.
This warranty is valid in the United States & Canada and
void elsewhere. Please consult your classified telephone
directory or your food service equipment dealer; or, for information and other details concerning warranty, write to:
Wells Manufacturing
10 Sunnen Dr., St. Louis MO 63143 USA
phone (314) 678-6314 or fax (314) 781-2714
for information and other details concerning warranty.
been modified, misused, misapplied, improperly installed, or
damaged in transit or by fire, flood or act of God.
It also does not apply if the serial nameplate has been
removed or unauthorized service personnel perform service.
SERVICE POLICY AND PROCEDURE GUIDE and ADDITIONAL WARRANTY EXCLUSIONS
1. Resetting of safety thermostats, circuit breakers, over
load protectors, and/or fuse replacements are not
covered by this warranty unless warranted conditions
are the cause.
2. All problems due to operation at voltages or phase
other than specified on equipment nameplates are
not covered by this warranty.
Conversion to correct voltage and/or phase must be
the customer’s responsibility.
3. All problems due to electrical connections not made
in accordance with electrical code requirements
and wiring diagrams supplied with the equipment are
not covered by this warranty.
4. Replacement of items subject to normal wear, to
include such items as knobs, light bulbs; and, normal
maintenance functions including adjustments of
thermostats, adjustment of micro switches and
replacement of fuses and indicating lights are not
covered by warranty.
5. Damage to electrical cords and/or plug due to exposure
to excessive heat are not covered by this warranty.
6. Full use, care, and maintenance instructions supplied
with each machine. Noted maintenance and
preventative maintenance items, such as servicing and
SHIPPING DAMAGE CLAIM PROCEDURE
NOTE: For your protection, please note that equipment in
this shipment was carefully inspected and packaged by
skilled personnel before leaving the factory. Upon
acceptance of this shipment, the transportation company
assumes full responsibility for its safe delivery.
IF SHIPMENT ARRIVES DAMAGED:
1. VISIBLE LOSS OR DAMAGE: Be certain that any
visible loss or damage is noted on the freight bill or
express receipt, and that the note of loss or damage is
signed by the delivery person.
2. FILE CLAIM FOR DAMAGE IMMEDIATELY:
Regardless of the extent of the damage.
cleaning schedules, are customer responsibility. Those
miscellaneous adjustments noted are customer
responsibility. Proper attention to preventative
maintenance and scheduled maintenance procedures
will prolong the life of the appliance.
7. Travel mileage is limited to fifty (50) miles from an
Authorized Service Agency or one of its sub-service
agencies.
8. All labor shall be performed during regular working
hours. Overtime premium will be charged to the buyer.
9. All genuine Wells replacement parts are warranted for
ninety (90) days from date of purchase on nonwarranty equipment. This parts warranty is limited only
to replacement of the defective part(s). Any use of
non-genuine Wells parts completely voids any
warranty.
10. Installation, labor, and job check-outs are not
considered warranty and are thus not covered by this
warranty.
11. Charges incurred by delays, waiting time or operating
restrictions that hinder the service technician’s ability to
perform service are not covered by warranty. This
includes institutional and correctional facilities.
3. CONCEALED LOSS OR DAMAGE: if damage is
unnoticed until the merchandise is unpacked, notify the
transportation company or carrier immediately, and file
“CONCEALED DAMAGE” claim with them. This
should be done within fifteen (15) days from the date
the delivery was made to you. Be sure to retain the
container for inspection.
Wells cannot assume liability for damage or loss incurred in
transit. We will, however, at your request, supply you with
the necessary documents to support your claim.
M903 2M-Z19624 Owners Manual M4200-4
2
Page 5
PRECAUTIONS AND GENERAL INFORMATION
This appliance is intended for use in commercial establishments
only.
This appliance is intended
No other use is
agents.
Operators of this appliance must be familiar with the appliance use,
limitations and associated restrictions. Operating instructions must be
read and understood by all persons using or installing this appliance.
Cleanliness of this appliance is essential to good sanitation. Read and
follow all included cleaning instructions and schedules to ensure the
safety of the food product.
Disconnect this appliance from electrical power before performing any
maintenance or servicing.
DO NOT submerge this appliance in water. This appliance is not jet
stream approved. Do not direct water jet or steam jet at this appliance,
or at any control panel or wiring. Do not splash or pour water on, in or
over any controls, control panel or wiring. Do not wash floor around
this appliance with water or steam jet.
Exposed surfaces of this appliance can be hot to the touch and may
cause burns.
Do not operate this appliance if the control panel is damaged. Do not
operate this appliance if the keypad section of the control panel is torn
or broken. Call your Authorized Wells Service Agent for service.
The technical content of this manual, including any wiring diagrams,
schematics, parts breakdown illustrations and/or adjustment
procedures, is intended for use by qualified technical personnel.
Any procedure which requires the use of tools must be performed by a
qualified technician.
This manual is considered to be a permanent part of the appliance.
This manual and all supplied instructions, diagrams, schematics, parts
breakdown illustrations, notices and labels must remain with the
appliance if it is sold or moved to another location.
This appliance is made in the USA. Unless otherwise noted, this
appliance has American sizes on all hardware.
recommended or authorized by the manufacturer or its
to prepare food for human consumption.
WARNING:
SHOCK HAZARD
All servicing requiring
access to non-insulated
electrical components
must be performed by a
factory authorized
technician.
DO NOT open any access
panel which requires the
use of tools. Failure to
follow this warning can
result in severe electrical
shock.
CAUTION:
RISK OF
DAMAGE
DO NOT connect or
energize this appliance
until all installation
instructions are read and
followed. Damage to the
appliance will result if
these instructions are not
followed.
CAUTION:
HOT SURFACE
Exposed surfaces can be hot
to the touch and may cause
burns.
M903 2M-Z19624 Owners Manual M4200-4
3
Page 6
SPECIFICATIONS
25 1/8”
638 mm
20”
508 mm
DOOR SWING
MAX
30 1/8”
765.2 mm
2 5/8”
67 mm
OVEN CAVITY
Wide: 14-3/8” (365 mm)
Deep: 21” (533 mm)
High: 20” (508 mm)
25 1/4”
641 mm
2”
51 mm
Cord
Hanger
Power
Supply
Cord
6 3/16”
157 mm
OVEN GUIDE HOLDER
SPOTWELDED TO THE
OVEN DOOR
IL2956a
ELECTRICALSPECIFICATION
kW
Model Voltage Phase Hz
1 Ph 60 7.5 38
3 Ph 60 8.75 21.0 21.0 21.0
1 Ph 60 8.4 37
3 Ph 60 8.75 21.0 21.0 21.0
M4200-4
208V
240V
Total
Amps
1 Ph.
L1 L2 L3 N
380-415V 3NAC 50/60 8.75 11.7 11.7 11.7 1.0
Note: The unit is shipped from the factory wired for the voltage and phase on the nameplate,
It is not approved for field conversion.
4
M903 2M-Z19624 Owners Manual M4200-4
Page 7
INSTALLATION
UNPACKING & INSPECTION
Carefully remove the appliance from the carton. Remove all
protective plastic film, packing materials and accessories from the
Appliance before connecting electrical power or otherwise performing
any installation procedure.
Carefully read all instructions in this manual before starting any
installation.
Read and understand all labels and diagrams attached to the
appliance.
Carefully account for all components and accessories before
discarding packing materials. Store all accessories in a convenient
place for later use.
COMPONENTS
3 ea. OVEN RACKS
2 ea. RACK SUPPORTS
1 ea. FAN BAFFLE
ACCESSORIES
1 ea. LITERATURE PACKAGE
OPTIONAL ACCESSORIES
21330 Caster Set
21445 Prep Top Kit
23035 Venting Duct Assembly Kit (single oven)
21342 Stacking kit for double ovens
SERVICE TECHNICIAN INSTALLATION NOTES
1. Installation and start up should be performed by an authorized
installation company. Installer must record installation particulars
on the CUSTOMER SERVICE DATA form on page 33 of this
manual.
2. Verify that this equipment installation is in compliance with the
specifications listed in this manual and with local code
requirements.
NOTE: DO NOT discard
the carton or other packing
materials until you have
inspected the appliance for
hidden damage and tested it
for proper operation.
Refer to SHIPPING DAMAGE
CLAIM PROCEDURE on the
inside front cover of this
manual.
WARNING:
RISK OF
INJURY
Installation procedures must
be performed by a qualified
technician with full knowledge
of all applicable electrical and
plumbing codes. Failure can
result in personal injury and
property damage.
IMPORTANT:
It is the RESPONSIBILITY
OF THE INSTALLER to
check with the AUTHORITY
HAVING JURISDICTION, in
order to verify compliance
with local codes and
ordinances for THIS
SPECIFIC EQUIPMENT
INSTALLATION.
M903 2M-Z19624 Owners Manual M4200-4
5
Page 8
INSTALLATION (continued)
WARNING:
SHOCK HAZARD
All servicing requiring
access to non-insulated
electrical components must be
performed by a factory
authorized technician.
DO NOT open any access panel which requires the use of
tools. Failure to follow this
warning can result in severe
electrical shock.
NOTE: Oven is shipped with
biscuit baking adapter plate
attached to rear panel.
If oven is used exclusively for
bread products (bread, pies,
etc.), DO NOT remove adapter.
If oven is used for proteins,
install optional external vent
kit # WS-505504. Protein
requires additional venting to
decrease release of cooking
vapors when opening the door.
Vent Duct Installation
EQUIPMENT SET-UP
1. IF CONVECTION OVEN IS TO BE USED FOR PROTEINS,
INSTALL EXTERNAL DUCT
a. Remove 2 screws at each end of adapter plate on back of
oven.
b. Loosen 2 screws at bottom of adapter plate. Remove
adapter plate.
c. Slide bottom flange of vent duct over the two loosened screws.
d. Install four and tighten screws at ends of vent duct, then
tighten bottom screws.
2. CURB or COUNTER MOUNTING
a. Setup the appliance only on a firm, level, non-combustible
surface. Verify local codes for requirements. Concrete, tile,
terrazzo or metal surfaces are recommended. Metal over
combustible material may not meet code for non-combustible
surfaces.
b. Appliance is approved for installation with zero clearance at
bottom.
c. Recommend at least 3” clearance on sides and back to allow
adequate air flow.
3. INSTALLING OPTIONAL CASTERS (NOTE: casters are not
provided and must be purchased separately:
kits WS-21372 & WS-21373.)
a. Install casters, one on each corner of the appliance, in the
holes provided. Locking casters must be installed on the
FRONT of the appliance.
b. Set up the appliance only on a firm, level, non-combustible
surface. Verify local codes for requirements. Concrete, tile,
terrazzo or metal surfaces are recommended. Metal over
combustible material may not meet code for non-combustible
surfaces.
c. LEVELING: Verify that the appliance sits firmly on all four
casters when in its normal operational position. With a level,
check that the appliance is level front-to-back and side-to-side.
4. INSTALLING OPTIONAL LEGS (NOTE: Legs are not provided
and must be purchased separately: (Kit: WS-22829, set of 2)
a. Install adjustable legs, one on each corner of the appliance, in
the holes provided.
b. Set up the appliance only on a firm, level, non-combustible
surface. Verify local codes for requirements. Concrete, tile,
terrazzo or metal surfaces are recommended. Metal over
combustible material may not meet code for non-combustible
surfaces.
c. LEVELING: Verify that the appliance sits firmly ON ALL FOUR
LEGS. With a spirit level, check that the appliance is level
front-to-back and side-to-side.
5. OTHER OPTIONAL KITS
a. Kit 5F-21445 Prep Top allows the top of the M4200 to be used
as an NSF 4-compliant work surface.
b. Kit WS-21342 Oven Stacking Kit allows M4200 units to be
stacked 2-high.
c. Kit WS-505504 - Convert to protein oven.
M903 2M-Z19624 Owners Manual M4200-4
6
Page 9
INSTALLATION (continued)
!
DANGER: SHOCK HAZARD
ELECTRICAL CONNECTIONS MUST BE MADE BY A
LICENSED ELECTRICIAN
Electrical shock will cause death or serious injury.
Refer to the nameplate on the front of the appliance.
• Verify the ELECTRICAL SERVICE POWER.
• Voltage and phase must match the nameplate specifications, and electrical
service amps must meet or exceed the specifications listed on page 1.
M4200 (domestic) field wiring must be no less than 10 AWG 4 conductor solid
copper wire, rated for at least 90ºC.
NOTE: Wire gauge, insulation type and temperature rating , as well as type,
size and construction of conduit, must meet or exceed applicable specifications
of local codes and of the National Electrical Code.
This appliance is equipped with a Hubbell L430P9 plug, which must be
plugged into a matching Hubbell L430R9 receptacle. The ground lug of the
receptacle must be connected to a suitable building ground.
M4200-EU (European) field wiring must have a minimum cross-sectional area of
1.5mm2.
IMPORTANT: An approved all pole power disconnect switch,
With at least 3 mm contact gap, must be supplied and installed in the fixed wiring in an accessible location (close proximity to the appliance) by a licensed
electrician.
EU INSTALLATION INSTRUCTIONS:
1. Using a screwdriver, remove terminal access panel located behind front
door marked: NOTICE - REMOVE THIS PANEL FOR TERMINAL BLOCK
2. Knock out the appropriate hole plug located on enclosure panel and
3. Thread supply leads through strain relief
4. Secure all connections and reinstall terminal access cover.
M903 2M-Z19624 Owners Manual M4200-4
5. “Equal Potential” grounding screw is located at rear of frame,
Remove screw and secure an appropriate grounding wire with
terminal.
NOTE: Strain relief supplied loose is for metal conduit connection.
For flexible power cords an approved strain relief fitting must be supplied by others.
connect conduit strain relief.
• Connect supply power lines to terminals marked: L1, L2, L3
• Connect the neutral line terminal marked: N
• Connect green-with-yellow-stripe lead to ground lug marked
marked
CAUTION:
RISK OF
DO NOT connect or energize
this appliance until all
installation instructions are
read and followed. Damage
to the appliance will result if
these instructions are not
followed.
DAMAGE
CAUTION:
SHOCK HAZARD
The ground lug of this
appliance must be connected
to a suitable building ground.
IMPORTANT:
Contact a licensed electrician to
install and connect electrical
power to the appliance.
IMPORTANT:
Damage due to being connected
to the wrong voltage or phase is
NOT covered by warranty.
IMPORTANT
PROGRAMMING NOTE:
This oven is pre-programmed
from the factory and normally
does not require programming
adjustments.
EU Connections
SUPPLY LINE 2
SUPPLY LINE 1
NEUTRAL
GROUND
L3SUPPLY LINE 3
L2
L1
N
IL2357
7
Page 10
FEATURES & OPERATING CONTROLS
M4200 CONVECTION OVEN FEATURES
8
M903 2M-Z19624 Owners Manual M4200-4
Page 11
FEATURES & OPERATING CONTROLS (continued)
ITEM DESCRIPTION FUNCTION
A. OPTIONAL PREP TOP Allows top of oven to be used as a work surface
B. OVEN TOP Covers and protects top insulation
C. OVEN DOOR Covers and provides access to oven cavity
D1. DOOR HANDLE Safe hand hold to open or close oven.
D2. DOOR STRIKER & LATCH Striker and door- mounted latch hold oven door closed
E. ACCESS PANEL Covers and provides access to fan motor and electric
connections and controls
F1. COOLING FAN INLET Provides air circulation for cooling. DO NOT spray or pour
F2. COOLING LOUVERS water into cooling fan inlet or louvers
G. POWER CORD
(not provided on EU models) Supplies power from receptacle to oven
H. CORD HANGER Provides storage for cord when moving oven
I. EXTERNAL CAVITY VENT Cooking fumes are vented here
J. OPTIONAL FRONT CASTERS Allow oven to be easily moved; locking to stabilize oven
when in position
K. OPTIONAL REAR CASTERS Allow oven to be easily moved.
L. POWER FUSES Protect electrical circuits from overload
M. DATA PLATE Provides manufacturer, model and serial number information.
Also, provides electrical specifications and requirements
N. POWER PLUG
(not provided on EU models) Plugs into power receptacle
P. CARD READER Reads menu card
Q. MENU CARD Contains default information; used to reprogram smart
controller with default settings in the event of program errors
R. ON/OFF SWITCH Energizes appliance
S. SMART CONTROLLER Controls cooking times and temperatures; selectable
pre-programmed settings.
DO NOT spray or pour water into controller
T. BEEPER Audible indicator for alarms, end-of-cycle, etc.
U. RACK SUPPORTS Hold cooking racks
M903 2M-Z19624 Owners Manual M4200-4
V. PRODUCT RACK Holds product to be cooked
W. HEATING ELEMENTS Provide cooking heat when energized
X. FAN Circulates heated air during cooking
Y. FAN BAFFLE Covers fan, also provides mounting for right rack support
9
Page 12
FEATURES & OPERATING CONTROLS (continued)
SMART CONTROLLER
HEAT ON
COOLING
TIMER
BISCUITS BAGELS
COOKIES
PASTRY
BITES
McGRIDDLES
BUNDTS
MOZZ
STICKS
PIES
MUFFINS
M903 2M-Z19624 Owners Manual M4200-4
SCR
BISCUIT
IL2953
10
Page 13
FEATURES & OPERATING CONTROLS (continued)
BUTTON DESCRIPTION / FUNCTION
VIEW View current temperature & setpoint temperature by pressing and holding 3 seconds.
TEMP When baking multiple products can view time remaining. In program mode arrow
indicates cursor will move to the right when entering data.
PROG Press and hold for 5 seconds to enter into program mode. After entry pressing
PROG button can access the following areas. When asked for password, enter 9793.
1) Temp Cal - - Not password protected. Used for calibrating temperature
2) View menu - - Not password protected. In this mode can view each product setting by
pressing the appropriate button. Cannot edit or change settings in this mode.
3) Edit menu - - Password protected (Authorized Personnel Only). In this mode can
view and change settings, names, alarms, etc. in buttons 1 – 0
4) Service menu - - Password protected (Authorized Personnel Only).
Contains the following information
a) Unit ID # f) Rise Time 10:00
b) Scale ºF g) Detect Current YES
c) Temp Comp YES h) Time (clock, real time)
d) Energy Saver NO
e) Default Menu
5) Transfer menu - - Password protected (Authorized Personnel Only).
Contains the following functions;
a) Read Menu Card Controller will read information from the card
b) Write Menu Card Controller will transfer information to the card
c) Restore Menu Restores default menu settings (Use Menu Card)
d) Restore Systems Restore default operating systems settings (Use System
Card)
6) Systems info - - Not password protected. Contains the following information used to
determine system versions and updates.
a) Model #
b) Bios Version
c) O/S Version (operating systems)
d) Default Menu
NOTE: Program button is used as the enter key for accepting data and / or moving to the next function.
START Actuates the timing cycle for baking. In programming mode used to exit and save
Buttons 0 – 9 Used to select stored menu items. In programming mode also used to enter alpha
sequences to change or enter product names.
Buttons 2 & 8 Select menu items. Also used in the programming mode for scrolling up or down
numerically for temperature calibration, and changing no to yes or vice versa.
UTILITY 1) Contains cool down function.
2) Used to switch between dayparts by holding UTILITY button for 3 seconds then
pressing PROG.
3) In program mode arrow function is used to move cursor to the left
CANCEL 1) Used to cancel alarms.
M903 2M-Z19624 Owners Manual M4200-4
2) In program mode used to exit out without saving.
3) Used to cancel a bake cycle. Press VIEW to display desired bake cycle, then press
CANCEL to cancel that bake cycle.
IMPORTANT PROGRAMMING NOTE: This oven is pre-programmed from the factory and does not
require programming adjustments under normal circumstances.
11
Page 14
QUICK-GLANCE OPERATING GUIDE
START-UP AND NORMAL OPERATION
1 Verify the oven is plugged into proper outlet.
2 Turn power switch to “ON” position. WELLS / BLOOMFIELD <for 3 seconds>
Oven will begin to heat up to a pre-set temperature of 375ºF. BISCUITS TOO COOL
Button 1 is the default menu item. Oven temperature status is
displayed for the current menu item selected. The fan speed is
set for the first bake stage of the current menu item.
3
NOTE: Controller display will read “TOO COOL” until oven
reaches pre-set temperature of 375ºF.
During initial heat up, oven will not operate until “OVEN READY”
is displayed. When “OVEN READY” is displayed, have product
ready to put into oven
4 Open door, position product on proper shelf and close door. BISCUITS READY
Press correct product button.
5
Press “START” button. EXAMPLE:
At end of a cook cycle audible alarm will sound.
Alarm will automatically shut off when door is opened or
6
CANCEL button is pushed.
7 Remove product and close door BISCUITS READY
Repeat numbers 4, 5, 6 and 7 for additional cook cycles. Be
sure correct menu option is selected and displayed. Always
push “START” button to begin cook cycle.
Repeat numbers 4, 5, 6 and 7 for additional cook cycles.
Be sure correct menu option is selected and displayed.
8
Always push “START” button to begin cook cycle.
ACTION DISPLAY WILL READ
BISCUITS 3:00
BISCUITS REMOVE
NOTE: Up to three menus can be executed for single stage bak-
ing with the same bake temperature and fan speed. Multiple
menu execution is not supported with DAYPART #2 menus or
multi stage baking.
SHUT-DOWN PROCEDURE
When last product is done for the day open door of oven and let
1
it remain open.
2 Press “UTILITY” button. FAST COOL MODE
3 Press “START” button. Fan will start COOL DOWN
4 Allow cool-down process for a minimum time of 3 – 5 minutes.
Press power switch to “OFF” position. Interior of oven can then
5
be safely cleaned.
ACTION DISPLAY WILL READ
12
M903 2M-Z19624 Owners Manual M4200-4
Page 15
OPERATION
DAILY SET-UP PROCEDURES
1. Make sure the power cord is plugged into the appropriate
power supply receptacle.
2. Place the ON/OFF switch in the ON position. A double "beep" will
sound, display will read WELLS BLOOMFIELD for 3 seconds,
then display oven status:
a. Display will read BISCUITS TOO COOL and the heat light
will glow during warm-up.
b. Display will read BISCUITS READY and the heat light will go
out when oven temperature reaches the setpoint.
c. Heat light will cycle as heating elements cycle to maintain
desired temperature.
3. To view actual and setpoint temperature, press and hold TEMP key
for 5 seconds (example: TEMP 340F SET 375F).
WELLS / BLOOMIELD
HEAT ON
CAUTION:
HOT SURFACE
Exposed surfaces can be hot
to the touch and may cause
burns.
Oven door will be hot to the
touch during operation. Use
the provided handle to open
and close oven door.
NOTE: A "beep" will sound
each time a key is pressed.
COOLING
TIMER
BISCUITS BAGELS
COOKIES
PASTRY
BITES
M903 2M-Z19624 Owners Manual M4200-4
McGRIDDLES
BUNDTS
MOZZ
STICKS
PIES
MUFFINS
SCR
BISCUIT
IL2954
13
Page 16
OPERATION (continued)
CAUTION:
HOT SURFACE
Exposed surfaces can be hot
to the touch and may cause
burns.
Oven door will be hot to the
touch during operation. Use
the provided handle to open
and close oven door.
Product and trays will be hot
after baking. Use appropriate
oven mitt to remove product
or trays.
CAUTION:
CUT HAZARD
Fan will be running during
cool-down. Avoid reaching
into the oven while oven is in
cool-down mode.
Fan blades are sharp and can
cause lacerations.
NOTE: Convection fan will
be running at all times the
power switch is ON and the
oven door is closed.
NOTE: Menu items are
subject to change at the
discretion of McDonalds
Management.
COOK CYCLE OPERATION
1. Slide racks of product into oven as appropriate. Shelf positions
required for quality baked products are:
NO. OF PANS RACK POSITION
OF PRODUCT UTILIZED
1 5
2 2 & 8
3 2, 5 & 8
2. Press the appropriate menu key.
Press button ONCE for any full tray of
product (1, 2, 3).
Press button TWICE for any partial tray of
product (1/2, 1/4, …).
Display will show selected menu item and
associated time (example: BISCUITS 03:00). Within 5 seconds,
press START key to begin cooking. Start indicator light will glow
and display time will begin cook timer.
a. If START is not pressed within 5 seconds, controller returns
to OVEN READY.
b. Display shows product and time remaining on cook timer.
To display multiple cook cycles, press VIEW button repeatedly.
Partial tray readout is <BISCUITS PAR>
c. Typical menu items
for full trays for partial trays
1. BISCUITS BISCUITS PAR
2. BAGELS BAGELS PAR
3. PIES PIES PAR
4. COOKIES COOKIES PAR
5. McGRIDDLES McGRIDDLES PAR
6. MUFFINS MUFFINS PAR
Note: Load compensation is disabled when partial tray is selected.
3. If necessary to interrupt cook cycle:
a. Timer pauses if door is opened during cook cycle. Timer will
resume countdown when door is closed.
NOTE: Opening oven door during baking is not recommended.
b. Press and hold CANCEL key for 5 seconds to cancel countdown
and return to ready mode.
4. At end of cook cycle, a continuous tone will sound and display will
advise to remove product (example: BISCUITS REMOVE).
IMPORTANT: Use oven mitt to remove product. Open oven door
or press CANCEL to silence tone. When door is closed, oven will
return to ready mode for the current menu item..
5. Cooling Timer is currently enabled for baking pies, muffins, pastry
bites and bundt cakes.
IMPORTANT: Product and trays will be hot after baking.
Wear appropriate oven mitt to handle hot product or trays.
a. At end of baking cycle cooling indicator light will glow.
Remove trays. Products are to remain on trays.
b. Close oven door. Oven timer will automatically sound after
time expires.
c. Do not box product until cooling time has expired.
M903 2M-Z19624 Owners Manual M4200-4
14
Page 17
PROGRAMMING INSTRUCTIONS
IMPORTANT: This oven is pre-programmed from the factory and does not require
programming adjustments under normal circumstances. Any programming
changes must be performed by qualified persons only.
ENTER PROGRAM MODE
NOTE: Oven must be turned ON. No cooling timer or bake cycle can be active.
Special Button Functions: Scroll through the options by pressing the PROG button: # 2 and
#8 allows scrolling up or down; and, changes from yes or no
To enter programming mode, press and hold PROG
button for 5 seconds
1
This option allows temperature calibration
Press PROG button VIEW MENU ITEM NO
2
This option allow viewing programmed values of menu items
Press PROG button EDIT MENU NO
3
This option allows changing programmed values of menu items
Press PROG button SERVICE MENU NO
4
This option allows changes to temperature scale and to set real-time clock
Press PROG button TRANSFER MENU NO
5
This option allows history upload, read menu card, write menu card
and restore defaults
Press PROG button SYSTEM INFO NO
6
This option allows viewing of controller model number, BIOS program number and
version, operating system (O/S) number and version, and default menus
To EXIT PROGRAM MODE:
Press CANCEL button two (2) times. Controller will
revert to RUN mode
1 BISCUITS
2 BAGELS
3 PIES
4 COOKIES
5 McGRIDDLES
6 MUFFINS
M903 2M-Z19624 Owners Manual M4200-4
7 PASTRY BITES
8 BUNDTS
9 SCRATCH BISCUITS
0 MOZZARELLA STICKS
ACTION
DISPLAY WILL
READ
TEMP CAL NO
OVEN READY
Button Designations
15
Page 18
PROGRAMMING INSTRUCTIONS (continued)
IMPORTANT: This oven is pre-programmed from the factory and does not require
programming adjustments under normal circumstances. Any programming
changes must be performed by qualified persons only.
CHANGE SETTINGS for name, cooking time, cooking temperature and cooling time
NOTE: Cannot go into edit or view program mode when cooling timer s activated or when in a bake cycle.
1 Enter programming mode, press and hold PROG button for 5 seconds
2 Press PROG button until EDIT menu is reached
3 Press #2 or #8 button to select YES
Press PROG button PASSWORD 0000
4
Type in 9793
Press PROG button SELECT DAYPART #1
NOTE: Two menu items can be programmed for each button. Up to three DAYPART #1 single stage recipe
5
menus with the same bake temperature and fan speed can be executed simultaneously. Multi stage baking
and DAYPART #2 menus do not support multiple menu execution. To switch from DAYPART #1 to DAYPART
#2 menus hold down the UTILITY button and press the PROG button.
6
Press PROG button SEL->
7 Press desired menu button. Display will ready menu item selected
Press PROG button. Display will read menu name with flashing cursor.
NOTE: When programming in a new name, flashing cursor indicates letter to be changed. Using the alpha
8
designations on the keypad enter in the first letter. Cursor will automatically move to the next letter. Continue
in this manner until the name of the menu item is completely entered. To change letters use the arrow in the
VIEW /TEMP temp button to move the cursor to the right, or the arrow in the UTILITY button to move the
cursor to the left.
ACTION DISPLAY WILL READ
CAL TEMP NO
EDIT MENU ITEM NO
EDIT MENU YES
PASSWORD 9793
BISCUITS
BISCUITS
CHANGING THE NAME
Press PROG button ENABLE YES
9
If enable YES button can be used during normal operation
If enable NO button has no function during normal operation
Press PROG button CANCEL A/M MANUAL
f CANCEL MANUAL, the audible alarm will sound until the door is opened or CANCEL is pressed.
10
If CANCEL AUTO, the audible alarm will time out.
Press PROG button and enter number of baking stages NUMBER OF STAGES 1-3.
Up to three bake stages can be programmed for each menu recipe. Each stage
will have a bake time, temperature, fan speed and time compensation table.
11
Press PROG button and enter cook time COOK TIME 00:00
12
Press PROG button. Enter desired temperature COOK TEMP 000
Press PROG button FAN SPEED HI
Three fan speed settings are available. HI, LOW and LOW/HT. HI provides the fastest heat transfer. LOW
12A
reduces heat transfer. LOW/HT provides air circulation only during the heating cycle to maintain even oven
temperatures while protecting delicate food products adversely affect by air currents.
16
M903 2M-Z19624 Owners Manual M4200-4
Page 19
PROGRAMMING INSTRUCTIONS (continued)
IMPORTANT: This oven is pre-programmed from the factory and does not require
programming adjustments under normal circumstances. Any programming
changes must be performed by qualified persons only.
IMPORTANT: DO NOT CHANGE FACTOR VALUES OR TIME VALUES FOR EXISTING MENU ITMES
13
Press PROG button. Display will read
Press PROG button repeatedly to cycle through factor values
and factor times (1 - 5).
14
Enter time, temperature, fan speed, factor values and factor times for each bake stage.
Display will read <COOLING TIMER>
15 Press button #2 or #8 to enable or disable cooling timer
16
Press PROG button COOLING TIMER
Set desired cooling time (0 - 60 minutes) Press button #2 to in-
17
crease time or button #8 to decrease time
Press PROG button. Beep will sound to indicate new information
is saved. (This is the end of this programming cycle. In no other
18
menu items are to be programmed, go on to #19. If other menu
items are to be programmed, press PROG to return to #6)
19
Press START button EDIT MENU ITEM NO
Press START button OVEN READY
20
Programming the controller is now complete
ACTION DISPLAY WILL READ
FACTOR 1 VALUE 00000
FACTOR 1 TIME 00000
COOLING TIMER NO
COOLING TIMER Yes
UPDATING MENU ITEM
SELECT DAYPART #1
10:00
NOTE: ENTER PROGRAMMING and VIEW PROGRAMMING are disabled during cook cycle and while cooling
timer is activated.
M903 2M-Z19624 Owners Manual M4200-4
17
Page 20
PROGRAMMING INSTRUCTIONS (continued)
IMPORTANT: This oven is pre-programmed from the factory and does not require
programming adjustments under normal circumstances. Any programming
changes must be performed by qualified persons only.
PROCEDURE TO INSTALL O/S SYSTEM INTO CONTROLLER
ACTION DISPLAY WILL READ APPROX. TIME
1. Oven switch must be in the “OFF” position
2. Insert menu Runware Card into card reader slot
with chip facing down. Push in until resistance is
met, then another 1/8”
3. Press “UTILITY” and “CANCEL” button at the
same time. Hold these buttons.
4. Turn oven switch to “ON” position
5. Release “UTILITY” and “CANCEL” button
at the same time.
6. Display will read the following for
approximate time: LOADING O/S 1 second
Rotating Bar indicates controller TESTING CARD 28 seconds
is accepting information LOADING O/S 56 seconds
LOADING DEFAULT MENU 1 second
WELLS BLOOMFIELD 1 second
Oven Will Start INCORRECT CARD (BEEP)
Remove card
7. Audible alarm will sound and oven will start.
Remove card from slot and return to protective
packaging.
8. Oven will say “TOO COOL”, and start to heat up.
Install operating system is now complete
M903 2M-Z19624 Owners Manual M4200-4
18
Page 21
PROGRAMMING INSTRUCTIONS (continued)
IMPORTANT: Programming changes to be performed by qualified persons only.
TRANSFER MENUS FROM MENU CARD TO CONTROLLER
Loading new settings to Controller from Menu Card to Oven using Smart Card Reader
NOTE: Oven must be in turned ON. No cooling timer or bake cycle can be active.
ACTION DISPLAY WILL READ
1. Insert menu card into card reader slot
Insert menu card with chip facing down.
Push in until resistance is met, then another 1/8” TESTING CARD (approx. 30 sec.)
PASSWORD 0000
2. Refer to page 22 for password READ MENU CARD NO
3. Press #2 button. READ MENU CARD YES
4. Press PROG button. TESTING CARD (approx. 30 sec.)
READING CARD
A rotating bar indicates the controller is
reading and downloading the information from
the menu card. When finished, audible alarm
will sound.
5. Remove card from slot and return to protective packaging.
6. Press START button. TOO COOL
TRANSFERRING MENUS FROM CONTROLLER TO MENU CARD
Saving new menu settings from Oven to Menu Card using Smart Card Reader
NOTE: Oven must be in turned ON. No cooling timer or bake cycle can be active.
ACTION DISPLAY WILL READ
1. Insert menu card into card reader slot
Insert menu card with chip facing down.
Push in until resistance is met, then another 1/8” TESTING CARD (approx. 30 sec.)
PASSWORD 0000
2. Enter password # 9793 READ MENU CARD NO
3. Press PROG button. WRITE MENU CARD NO
4. Press # 2 button. WRITE MENU CARD YES
5. Press PROG button. WRITING CARD
A rotating bar indicates the controller is
writing the information from the oven to
the menu card, and the information is being
M903 2M-Z19624 Owners Manual M4200-4
accepted. When finished, audible alarm
will sound.
6. Remove card from slot and return to protective packaging.
7. Press START button. TOO COOL
19
Page 22
PROGRAMMING INSTRUCTIONS (continued)
RECOMMENDED OVEN SETTINGS AS OF MARCH 1, 2015
IMPORTANT: Programming changes to be performed by qualified persons only.
PRODUCT
BUTTON #
BUTTON BASE TIME A/M 2 0 120
MINUTES MANUAL 4 0 120
BUTTON BASE TIME A/M
MINUTES MANUAL 4 0 60
BUTTON BASE TIME A/M
MINUTES MANUAL
BUTTON BASE TIME A/M 2 0 0
MINUTES MANUAL 4 0 0
BUTTON BASE TIME A/M 2 0 60
MINUTES MANUAL 4 0 60
BUTTON BASE TIME A/M 2 0 0
MINUTES MANUAL 4 0 0
26:30 320 F / 160 C LOW
BUTTON BASE TIME A/M 2 0 0
MINUTES MANUAL 4 0 0
BUTTON BASE TIME A/M 2 0 0
MINUTES MANUAL
BUTTON BASE TIME A/M 2 30 120
MINUTES MANUAL 4 0 120
BUTTON BASE TIME A/M 2 0 0
MINUTES MANUAL 4 0 0
* Scale Factors - FACTOR VALUES 1 - 5 and FACTOR TIMES 1 - 5 should not be changed for existing menu items
PASSWORD for oven settings : 9793
"DISPLAYED
NAME"
BISCUITS ENABLE CANCEL BAKE STAGES COOK TIME COOK TEMP FAN SPEED COOLING TIMER COOLING TIME FACTOR VALUE TIME
1 3 YES 1 3:00 375 F / 190 C HIGH NO N/A
BAGELS ENABLE CANCEL BAKE STAGES COOK TIME COOK TEMP FAN SPEED COOLING TIMER COOLING TIME FACTOR VALUE TIME
2 3 YES 1 3:00 375 F / 190 C HIGH NO N/A 3 0 60
3 10 YES 1 10:00 375 F / 190 C HIGH YES 10:00
4 2 YES 1 2:00 375 F / 190 C HIGH NO N/A 3 0 0
5 6 YES 1 6:00 375 F / 190 C HIGH NO N/A 3 0 60
6 47 YES 3 20:00 305 F /152 C LOW/HTR YES 20:00 3 0 0
7 8 YES 1 8:00 375 F / 190 C HIGH YES 30:00 3 0 0
8 11 YES 1 11:00 375 F / 190 C HIGH YES 10:00 3 0 0
9 12 YES 1 12:00 375 F / 190 C HIGH NO N/A
0 4:00 YES 1 4:00 375 F / 190 C HIGH NO N/A 3 0 0
PIES ENABLE CANCEL BAKE STAGES COOK TIME COOK TEMP FAN SPEED COOLING TIMER COOLING TIME FACTOR VALUE TIME
COOKIES ENABLE CANCEL BAKE STAGES COOK TIME COOK TEMP FAN SPEED COOLING TIMER COOLING TIME FACTOR VALUE TIME
McGRIDDLES ENABLE CANCEL BAKE STAGES COOK TIME COOK TEMP FAN SPEED COOLING TIMER COOLING TIME FACTOR VALUE TIME
MUFFINS ENABLE CANCEL BAKE STAGES COOK TIME COOK TEMP FAN SPEED COOLING TIMER COOLING TIME FACTOR VALUE TIME
00:30 380 F /193 C LOW
PASTRY BITES ENABLE CANCEL BAKE STAGES COOK TIME COOK TEMP FAN SPEED COOLING TIMER COOLING TIME FACTOR VALUE TIME
BUNDTS ENABLE CANCEL BAKE STAGES COOK TIME COOK TEMP FAN SPEED COOLING TIMER COOLING TIME FACTOR VALUE TIME
SCR BISCUIT ENABLE CANCEL BAKE STAGES COOK TIME COOK TEMP FAN SPEED COOLING TIMER COOLING TIME FACTOR VALUE TIME
MOZZ STICKS ENABLE CANCEL BAKE STAGES COOK TIME COOK TEMP FAN SPEED COOLING TIMER COOLING TIME FACTOR VALUE TIME
McDonald's PRODUCT FACTORY DEFAULT SETTINGS SCALE FACTORS
1 105 120
3 0 120
5 0 120
1 56 60
2 0 60
5 0 60
1 90 120
2 0 120
3 0 120
4 0 120
5 0 120
1 0 0
5 0 0
1 89 60
5 0 60
1 0 0
5 0 0
1 0 0
5 0 0
1 0 0
4 0 0
5 0 0
1 50 60
3 0 120
5 0 120
1 0 0
5 0 0
20
M903 2M-Z19624 Owners Manual M4200-4
Page 23
CLEANING INSTRUCTIONS
PREPARATION Allow oven to cool to 150ºF (65°C) or less
FREQUENCY Daily
TOOLS Clean Towels
DAILY CLEANING
1. With power switch ON, open oven door. Press UTILITY key.
Display will read FAST COOL MODE. Press START key. Display
will read COOL DOWN and fan will start. When oven has cooled,
press power switch OFF.
2. Wipe down interior of oven and inside surface of door with a clean
towel dampened with water.
3. Dry by wiping with a clean dry towel.
4. Wipe control panel with a clean dry towel to remove any build-up of
grease or food particles.
PROCEDURE IS COMPLETE
CAUTION:
SHOCK HAZARD
Disconnect appliance from
electric power
before cleaning.
CAUTION:
BURN HAZARD
Allow appliance to cool to
150ºF or less before cleaning.
Do not attempt to clean the
oven until it has cooled to
150ºF (65°C) or less. It can
burn you. Hand protection is
required.
IMPORTANT:
DO NOT use steel wool
or abrasive cleansers for
cleaning this appliance.
Always wipe or rub in the
direction of the polish lines
or grain of the metal.
IMPORTANT:
DO NOT spill or pour water
into control panel or wiring.
NOTE:
Damage to internal
components from water
damage is not covered by
warranty.
M903 2M-Z19624 Owners Manual M4200-4
21
Page 24
CLEANING INSTRUCTIONS (continued)
PREPARATION Allow oven to cool to 150ºF (65°C) or less
CAUTION:
SHOCK HAZARD
Disconnect appliance from
electric power
before cleaning.
CAUTION:
BURN HAZARD
Allow appliance to cool to
150ºF (65°C) or less before
cleaning.
Do not attempt to clean the
oven until it has cooled to
150ºF or less. It can burn
you. Hand protection is
required.
CAUTION:
CUT HAZARD
Fan will be running during
cool-down. Avoid reaching
into the oven while oven is in
cool-down mode.
FAN BLADES ARE SHARP.
Use due care when cleaning
and/or wiping.
IMPORTANT:
DO NOT use steel wool
or abrasive cleansers for
cleaning this appliance.
Always wipe or rub in the
direction of the polish lines
or grain of the metal.
IMPORTANT:
DO NOT spill or pour water
into control panel or wiring.
Damage to internal
components from water
damage is not covered by
warranty.
IMPORTANT:
Take care to avoid damage to
fan blades when reinstalling
fan baffle.
FREQUENCY Monthly
TOOLS Fiber Brush, Plastic Scouring Pad, Plastic Scraper
Mild Detergent, McD Sanitizer,
APC All Purpose Cleaner, Clean Towel
MONTHLY CLEANING
1. With power switch ON, open oven door. Press UTILITY key.
Display will read FAST COOL MODE. Press START key. Display
will read COOL DOWN and fan will start. When oven has cooled,
press power switch OFF.
2. Remove racks and rack supports. Remove fan baffle.
3. Brush the fan wheel and wipe it with a moist cloth. Sponge out all
loose particles.
4. Scrub entire interior of convection oven with a plastic scouring pad
and APC cleaner.
5. For baked on food spills, apply APC cleaner. Close the oven door
and let stand for 10 minutes with the power OFF. Wipe food spill
with a plastic scouring pad as needed. Rinse area by wiping with a
clean sanitized towel.
6. Wipe down the entire interior using a clean cloth or moistened with
water and a mild detergent. Rinse by wiping with a clean towel
moistened with sanitizer.
7. Clean oven racks and rack supports in a sink or dishwasher.
8. Reinstall the fan baffle, paying
particular attention that the lip on
the right side of the fan baffle is
fully seated in the slot in the edge
of the oven cavity. Reinstall rack
supports and racks.
9. Press power switch ON, press
UTILITY key then START key.
Verify that fan runs smoothly and
does not contact fan baffle.
Press power switch OFF.
Reposition fan baffle if necessary.
10. Wipe down exterior of the oven
using a clean cloth moistened with
water and a mild detergent.
11. Replace oven rack supports.
PROCEDURE IS COMPLETE
M903 2M-Z19624 Owners Manual M4200-4
22
Page 25
CAUTION: SHOCK HAZARD
Removal of any cabinet panel will result in exposed electrical circuits.
Any procedure requiring the removal of any cabinet panel must be performed by a qualified
technician only
CAUTION: SHOCK HAZARD
Fuse replacement may expose dangerous voltages.
Fuse replacement must be performed by a qualified technician.
TROUBLESHOOTING SUGGESTIONS
.
SYMPTOM
No power to appliance
Oven will not heat
Blower fan will not run
Door pops open during
cook cycle
Product not baking
properly (too light / too
dark)
On startup controller
Displays <HTR ERROR>
M903 2M-Z19624 Owners Manual M4200-4
On startup controller
Displays <MTR ERROR>
POSSIBLE CAUSE
Circuit breaker off or tripped
Power cord unplugged or damaged
Fuse blown or loose
Power switch turned OFF
Oven door not closed
Hi-limit control tripped on excessive
oven temperature
Damaged controller
Oven door not closed
Damage to internal components
Latch out of adjustment
Temperature out of calibration
Proper programming not set for menu
Item
Heating element is not working
properly
Fan motor is not working properly
SUGGESTED REMEDY
Reset circuit breaker
Check power cord
Plug in or repair as required
Check power fuses. If blown,
correct problem and replace
fuses
Turn power switch ON
Be sure door is closed and
latched
Allow oven to cool
Hi-limit will reset
Contact Authorized Wells
Service Agency for repairs
Be sure door is closed and
latched
Contact Authorized Wells
Service Agency for repairs
Tighten door latch screws
Follow procedures to calibrate
temperature. See Preventative
Maintenance pg. 26
Check menu item programming.
See default settings pg. 15 - 19.
Contact Authorized Wells
Service Agency for repairs
Contact Authorized Wells
Service Agency for repairs
NOTE: There are no user serviceable components in the appliance. In all cases of damage or
component malfunction, contact your Authorized Wells Service Agency for repairs.
23
Page 26
PREVENTATIVE MAINTENANCE
TEMPERATURE CALIBRATION
THE FOLLOWING PROCEDURE IS TO BE PERFORMED BY QUALIFIED PERSONNEL ONLY
PRECAUTIONS: BURN HAZARD - Wear appropriate protective gloves
FREQUENCY: Monthly
TOOLS: Digital Thermometer with Oven Probe
TEMPERATURE CALIBRATION
1. Verify power cord is plugged into appropriate supply.
2. Use a digital thermometer with oven probe. Open the oven door and clamp the probe to the center
of the middle rack.
3. Route the probe wires between door gasket segments on the right corner of the oven. Close the
oven door. Plug the probe into the digital thermometer.
4. Press the POWER SWITCH to ON. Wait at least 30 minutes for temperatures to stabilize.
No cooling timer or bake cycle can be active.
ACTION DISPLAY WILL READ
a) To enter programming mode, press and hold
PROG button for 5 seconds TEMP CAL NO
b) Press #2 or #8 button TEMP CAL YES
c) Press PROG button to display oven temp CAL TEMP xxxF yyyC
in Fahrenheit and Celsius where xxxF is ºF and yyyC is ºC
d) Compare displayed temp with the digital thermometer reading. CAL TEMP should read within
±3ºF (±1ºC) of temperature on the digital thermometer. If temperatures are within 3ºF (1ºC) of
each other, proceed to Step f. If the difference between temperatures exceeds 3ºF (1ºC),
proceed with Step e.
e) Change the CAL TEMP to match the thermometer reading. Use the “2” button to increase
CAL TEMP and “8” button to decrease the CAL TEMP. Always increase or decrease CAL TEMP
in increments of 3 - 5 degrees, then wait about 1 minute for the oven to adjust. You may not see
an immediate change in CAL TEMP when “2” or *”8” is pressed. Repeat as necessary.
IMPORTANT: Pressing CANCEL at any time while in the TEMP CAL mode will cause any
changes to be ignored. These changes will neither be saved nor implemented.
f) Press PROG button to view the following defaults. Stop when you hear a beep and UPDATING
SYSTEM is flashed on the display. Any changes have been saved.
DEFAULT MENU
RISE TME 10:00
DETECT CURRENT NO
CAL CURRENT NO
TIME (Ex: 00:00:00)
UPDATING SYSTEM
TEMP CAL NO
g) Press the CANCEL button to exit programming mode OVEN READY
CAUTION:
BURN HAZARD from oven before use.
Oven and inner door surfaces
are hot. Wear appropriate
protective gloves.
Remove temperature probe
M903 2M-Z19624 Owners Manual M4200-4
24
Page 27
PREVENTATIVE MAINTENANCE (continued)
CAUTION:
BURN HAZARD
Allow appliance to cool
completely before adjusting.
M903 2M-Z19624 Owners Manual M4200-4
Hinge Adjustment
HINGE ADJUSTMENT
PRECAUTIONS: None
FREQUENCY: As Needed
TOOLS: Phillips (+) Screwdriver
7/16" Nut Driver
7/8" and 1-1/8" Wrenches
THE FOLLOWING PROCEDURE IS TO BE
PERFORMED BY QUALIFIED PERSONNEL ONLY
1. Remove bottom panel to access pivot.
2. Gap between top of door and frame , and between bottom
of door and frame must be approximately equal
Adjust height of door by loosening jamb nut, then turning
pivot on its screw mounting. Clockwise lowers the door
height. Counter-clockwise raises the door height.
Re-tighten jamb nut.
3. Gap between left side of door and frame must be the
same from top to bottom
Adjust door for plumb by loosening holding screws. Turn
adjusting bolt to increase or decrease gap at bottom.
Clockwise increases gap. Counter-clockwise decreases gap.
Re-tighten holding screws.
4. Gap between top of door and frame must be the same
from side to side
Adjust door for level by loosening holding screws, then
raising or lowering latch-end of door until it is level.
Re-tighten holding screws.
5. Reinstall bottom panel.
Procedure is complete
25
Page 28
EXPLODED VIEW and PARTS LIST
M4200 and M4200EU
Cabinet & Related Components
D
81
104
40
M903 2M-Z19624 Owners Manual M4200-4
8
7
26
IL2276b
Page 29
EXPLODED VIEW and PARTS LIST (continued)
M4200 M4200EU Cabinet & Related Components
Item Description M4200 (EU) Qty
1 ASSY, CAVITY
6 PANEL, CONTROL F6-Z15736 1
7 LOGO WELLS DIECAST SHIELD 2M-306719 1
8 RETAINER CLIP 2C-31038 3
10 BRACKET, MOTOR MOUNT
13 BRACKET, CAVITY SUPPORT
14 GROMMET, 7/8" O.D. 2K-31040 2
17 ASSY, BAFFLE SUPPORT
MOUNT, TEMP SENSORS F6-304608 1
19
MOUNT, TEMP SENSORS, Earlier Design DD-48377 1
20 COVER, DOOR GASKET
21 CLIP, RACK SUPPORT F6-43889 8
22 HANDLE ASSEMBLY 2R-305612 1
24 BRACKET, HI-LIMIT THERMO
29 ASSY, DOOR COMPLETE F6-304652 1
30 GASKET, DOOR, SIDE F6-46313 2
35 GASKET, DOOR, TOP/BOT F6-46314 2
36 ASSY, OVEN TOP
38 HANGER, CORD
39 PANEL, EXTERIOR SIDE
40 INSULATION, MOTOR MOUNTING
42 ASSY, FRAME
44 SLEEVE, DOOR HINGE 2A-43900 1
47 GUARD, PROX. SWITCH F6-45647 1
50 DOOR STRIKER 2C-305616 1
51 DOOR LATCH 2C-305615 1
52 BUSHING, TOP DOOR HINGE 2K-305619 1
54 PIN, HINGE, DOOR TOP AND BOTTOM 2A-305610 2
55 ASSY, BOT DOOR HINGE F6-43896 1
56 PANEL, REAR
57 ASSY, VENT DUCT
58 TRIM, LOWER FRONT F6-43804 1
59 BRACKET, PROX SWITCH F6-43787 1
60 PLATE, DOOR PIVOT F6-43899 1
68 PLATE, DOOR HINGE PIN 2A-305610 2
69 PLATE, DOOR PIVOT HOLE F6-43899 1
80 NUT, HEX 3/4-10 UNC 2C-44363 1
81 BISCUIT BAKING ADAPTER F6-305523 1
90 WIRE SET (not shown)
92 TIE, WIRE, STANDOFF (not shown)
101 BAFFLE, OVEN F6-44504 1
102 RACK, PRODUCT 2B-50200-34 3
103 SUPPORT, RACK (pk 2) WS-21375 2
104 SCREW 8-32X1/2 PH FL HD 2C-35492 2
cc CLIP, TINNERMAN 2C-37943
M903 2M-Z19624 Owners Manual M4200-4
OPTIONAL PARTS
A KIT LEG OVEN S/S (SET OF 2) WS-22829 2
CASTER, LOCKING (FRONT) WS-21373 2
B
CASTER, SWIVEL (REAR) WS-21372 2
PREP TOP (includes hardware) WS-21445 1
BRACKET, PREP TOP F6-43828 4
C
SCREW 8-32X 1/2 PH TR HD 2C-41620 8
D KIT, EXTERIOR VENT DUCT (SINGLE OVEN) F6-305504 1
27
1
1
2
2
4
1
1
1
2
1
1
1
1
1
2
Page 30
EXPLODED VIEW and PARTS LIST (continued)
64
63
31
59
61 2 pc. 3pl.
62
94
71
6
70
M4200 & M4200EU
24
19
25 91 ref.
9
70
3
13
Internal Components
26
72
8
34
10
40
7
95
5
12
15
11
18
2
4
28
89
81
23
43
7.2
67
67.1ref.
7.1
M903 2M-Z19624 Owners Manual M4200-4
66
IL2600a
28
Page 31
EXPLODED VIEW and PARTS LIST (continued)
M4200 & M4200EU Internal Components
item description M4200 M4200EU qty application
1 ASSY, CAVITY 1
2 TERMINAL BLOCK WS-50131 2E-40310 1
3 SPACER, BLOWER MOTOR 4
4 LUG, SOLDERLESS 1
5 FAN, COOLING 2U-44687 1
6 PANEL, CONTROL 1
7 MOTOR, 1/4 HP WS-63932 1
7.1 START CAPACITOR WS-69823 1
7.2 BRACKET, START CAPACITOR 2V-300933 1
8 SPACER, MOTOR MOUNT 4
9 BLOWER WHEEL 2U-43797 1
10 BRACKET, MOTOR MOUNT 1
11 SSR MODULE 2E-304615 2
12 RELAY, E-SAFE 2E-306967 2E-306967A 1
13 ASSY, CURRENT DETECTOR 2E-306976 1
14 GROMMET, 7/8" O.D. 2K-31040 2
CONTACTOR, HI-LIMIT 208V 2E-Z14960 1
15
RELAY, HI-LIMIT 240V and 380-415V 2E-307328 1
18 TRANSFORMER 2E-Z5741 2E-303286 1
23 READER, MAGNETIC CARD 2E-306977 1
24 BRACKET, HI-LIMIT THERMO 1
25 THERMOSTAT, HI-LIMIT 2T-45180 1
26 THERMOCOUPLE 2J-304580 1
28 LABEL, GROUND SYMBOL DD-44584 1
31 ASSY, PROXIMITY SWITCH F6-45239 1
FUSEHOLDER, 10A 240V (M4200-3SV) 2E-34769 2
34
FUSEHOLDER, 5A 240V (M4200EU) DD-73795 1
40 INSULATION, MOTOR MOUNTING 2H-305520 1
42 ASSY, FRAME F6-304609 1
FUSE, 10A 240V (M4200-3SV) 2E-34768 2
43
FUSE, 5A 240V (M4200EU) 2E-73794 1
59 BRACKET, PROX SWITCH F6-43787 1
61 BRKT ELEM M4200-2 F6-43829 6
62.1 INNER ELEMENT, 208V (4" GAP) 2N-43872UL 1
62.2 INNER ELEMENT, 240V (4" GAP) 2N-43783UL 1
63.1 MIDDLE ELEMENT, 208V (2.5" GAP) 2N-43866UL 1
63.2 MIDDLE ELEMENT, 240V (2.5" GAP) 2N-43800UL 1
64.1 OUTER ELEMENT, 208V (1" GAP) 2N-43873UL 1
64.2 OUTER ELEMENT, 240V (1" GAP) 2N-43949UL 1
ASSY, POWER CORD, 3PHASE 2E-45177 1 M42004-2083C, -2403C
CORD ASSY 6-50P F6-WL0306 1 M42004-2081A, -2401A
CORD ASSY 9.5FT NEMA 15-30 F6-WL0733 1 M42004-2083A, -2403A
66
CORD ASSY 9.5FT CS8265C F6-WL0734 1 M42004-2081B, -2401B
CORD ASSY 9.5FT L15-30P F6-WL0735 1 M42004-2083B, -2403B
CORD ASSY 9.5FT IEC 360P6 F6-WL0736 1 M42004-2081C, -2401C
67 STRAIN RELIEF 2K-48754 1
M903 2M-Z19624 Owners Manual M4200-4
67.1 NUT (ONLY), STRAIN RELIEF 2C-45504 1
70 GASKET, ELEMENT 2J-43834 1
71 COVER, ELEMENT GASKET INNER F6-43836 1
72 COVER, ELEMENT GASKET OUTER F6-43837 1
81 CONTROLLER, TIME & TEMPERATURE 2J-Z19605 1
89 SWITCH, ON/OFF 2E-305295 1
93 OP. MANUAL M4200 (not shown) 2M-307323 1
94 BRKT CURRNET DETECT MTG F6-304717 1
95 MOUNTING BRKT MSB-KIT M4200 F6-Z20016 1
29
Page 32
WIRING DIAGRAM M4200 208/240V, SINGLE PHASE
42
43
AIR HEATER (3 PCS)
COOLING
54
52
50
CURRENT
DETECT
ASSY
22
FAN
55
53
51
WHITE
WIRING DIAGRAM FOR M4200
OVEN 208 OR 240 VOLTS, SINGLE PHASE
BLACK
HI-LIMIT
A
19
NCC TIME
TEMPERATURE
CONTROLLER
26
18
THERMOSTAT
25
35
RED
YEL.
10
1
23
ESAFE
RELAY
RED
1
2
12
3
24
10AMP FUSE
(2 PCS)
11
47
HI LIMIT
CONTACTOR
10
20
B
A
A1
A2
L1
T1
T2
L2
T3
L3
17
48
49
44
45
41
46
5
TERMINAL
BLOCK
BLACK
WHITE
GROUND
POWER
SUPPLY
2M-Z19625 (REV A)
CORD
23 - 27
A
SSR
LOW SPEED
+-
C
18
B
SSR
HIGH SPEED
14
+-
7
4
TRANSFORMER
208V SUPPLY
WIRING SHOWN
FOR 240V SUPPLY
MOVE NOS 4 & 42
ACCORDINGLY
240
42
208COM
6
1
2
43
3
9
BLOWER
MOTOR
GRD/YEL
MOTOR RUN
DOOR
SENSOR
SW.
CAPACITOR
36
34
M903 2M-Z19624 Owners Manual M4200-4
32
33
27
7
LIGHTED
ROCKER
-
+
12 PIN CONNECTOR
SWITCH
3
5
11
TERMINAL
BLOCK
33
35
1K OHMS
RESISTOR
THERMOCOUPLE
23 - 27
27
33
7
24
23
26
25
25
65
27
43
26
12
24
6 PIN CONNECTOR
23
23 - 27
30
Page 33
WIRING DIAGRAM M4200 208/240, THREE PHASE
42
43
AIR HEATER (3 PCS)
WIRING DIAGRAM FOR M4200
OVEN 208 OR 240 VOLTS, THREE PHASE
COOLING
54
52
50
ASSY
DETECT
CURRENT
FAN
55
WHITE
(2 PCS)
10
20
B
A
42
9
10AMP FUSE
11
44
45
46
27
24
25
4
TRANSFORMER
240
208COM
43
3
5
41
RED
BLOCK
TERMINAL
33
7
23
26
27
26
12
25
208V SUPPLY
WIRING SHOWN
FOR 240V SUPPLY
MOVE NOS 4 & 42
ACCORDINGLY
WHITE
65
43
2
GROUND
24
23
6 PIN CONNECTOR
1
2M-Z19626 REV B 7/27/15
ESAFE
RELAY
A1
A2
T1
53
51
14
L1
T2
L2
T3
L3
A
SSR
C
18
SSR
6
47
17
48
49
23 - 27
LOW SPEED
+-
B
HIGH SPEED
+-
7
BLACK
RED
BLOWER
MOTOR
GRD/YEL
MOTOR RUN
CAPACITOR
HI-LIMIT
A
NCC TIME
19
M903 2M-Z19624 Owners Manual M4200-4
THERMOCOUPLE
CONTROLLER
TEMPERATURE
26
18
THERMOSTAT
1
2
LIGHTED
ROCKER
SWITCH
3
32
5
11
10
12
25
1
35
23
33
27
7
3
24
-
+
23 - 27
34
1K OHM
RESISTOR
DOOR
SENSOR
33
SW.
35
23 - 27
36
31
Page 34
WIRING DIAGRAM M4200 380/415, THREE PHASE
5 AMPS
FUSE
6
3
5
2
1
4
9
8
B
7
A
6
RELAY
HI-LIMIT
11
39
10
(3 PCS)
AIR HEATER
43
42
56
55
57
54
53
52
51
50
SENSOR
CURRENT
(5) TIMES
WIRE# 22
LOOPED FIVE
19
FAN
COOLING
39
A1
N
A2
L1
T1
T2
L2
L3
T3
A
ESAFE
RELAY
47
48
49
23 - 27
17
57
56
GROUND
N
44
45
L1
L2
L3
46
BLOCK
TERMINAL
GROUND
57
N
REV.(-) 2M-Z19726
L1
44
46
L2
L3
BLOCK
TERMINAL
45
SINGLE PHASE CONNECTION
22
RED
BLACK
A
HI-LIMIT
THERMOSTAT
2
10
26
25
19
18
RED
YEL.
1
35
24
23
C
14
1
12
3
-
+
SSR
18
SSR
6
33
27
7
NCC TIME
TEMPERATURE
CONTROLLER
LOW SPEED
+-
B
-+
HIGH SPEED
7
WHITE
M
BLOWER
11
3
9
MOTOR
42
38
43
3
GRN/YEL
MOTOR RUN
CAPACITOR
32
4
TRANSFORMER
1
12
6521
11
38
8
2
7
M903 2M-Z19624 Owners Manual M4200-4
SW.
DOOR
SENSOR
33
BLOCK
1K OHMS
RESISTOR
36
MODEL M4200-4 220/380 - 240/415 VOLT 50/60 HZ AC 3 PHASE 4 WIRE WITH NEUTRAL
WARNING: DO NOT CONNECT TO A SYSTEM OPERATING AT MORE THAN 250 VOLTS TO GROUND
36.1
PHASE
35
N
L3
11.7 1.0
L2
3 PHASE
11. 7
L1
11. 7
34
56
37
TERMINAL
THERMOCOUPLE
23 - 27
32
23 - 27
AMPS SINGLE
VOLTS
240
Page 35
PARTS & SERVICE
DESCRIPTION PART NO.
CASTER SET, OVEN (set of 4) WS-21330
OVEN STACKING & VENTING KIT WS-21342
CASTER, SWIVEL (set of 2) WS-21372
CASTER, LOCKING (set of 2) WS-21373
OVEN RACK, REPLACEMENT (ea.) 2B-43784
PREP TOP WS-21445
LEG, OVEN, S/S 2A-45598
VENTING KIT, SINGLE OVEN WS-23035
IMPORTANT: Use only
factory authorized service
parts and replacement
filters.
For factory authorized
service, or to order factory
authorized replacement parts,
contact your Wells authorized
service agency, or call:
Wells Manufacturing
10 Sunnen Drive
St. Louis, MO 63143
Service Parts Dept.
phone: (314) 678-6314
fax: (314) 781-2777
Service Parts Department can
supply you with the name and
telephone number of the
WELLS AUTHORIZED
SERVICE AGENCY
nearest you.
CUSTOMER SERVICE DATA
RESTAURANT _____________________________ LOCATION _____________
INSTALLATION DATE ________________________ TECHNICIAN ___________
SERVICE COMPANY ________________________________________________
ADDRESS ___________________________ STATE ______ ZIP__________
TELEPHONE NUMBER (_____)_____-_________
EQUIPMENT MODEL NO. _______________
M903 2M-Z19624 Owners Manual M4200-4
EQUIPMENT SERIAL NO. _______________
VOLTAGE: (check one) 208V 240V 380-415V 3NAC
please have this information available if calling for service
33
Page 36
WELLS MANUFACTURING
10 Sunnen Dr., St. Louis, MO 63143
telephone: 314-678-6314
fax: 314-781-2714
www.wellsbloomfield.com
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