Place this chapter in the OVEN section of the equipment manual.
WELLS BLOOMFIELD, LLC
10 Sunnen Drive P.O.Box 430195
St. Louis, MO 63143 USA
telephone: 314-781-2777
fax: 314-781-2714
www.wellsbloomfield.com
CONVECTION OVEN
903
OWNERS MANUAL
VENTED
MODEL
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 USING OR
INSTALLING THIS APPLIANCE. Contact your WELLS DEALER if you have any
questions concerning installation, operation or maintenance of this equipment.
PRINTED IN UNITED STATES OF AMERICA
M4200-3S
M4200-3SEU
Includes
Installation
Use & Care
Programming
Exploded View
Parts List
Wiring Diagram
p/n 2M-307323 Rev. F M903 090429 rms
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 Bloomfield, LLC
10 Sunnen Dr., P.O.Box 430129
St. Louis MO 63143 USA
Service Dept.
phone: (314) 781-2777
fax: (314) 781-2714
Thank You for purchasing this Wells Bloomfield 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-307323 Owners Manual M4200/M4200EU
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
ENABLING SCRATCH BISCUIT BUTTON (#6) 18
INSTRUCTIONS TO CHANGE COOKIE SETTINGS 19
INSTALL OPERATING SYSTEMS SOFTWARE 20
TRANSFER MENUS FROM CARD TO OVEN 21
TRANSFER MENUS FROM OVEN TO CARD 21
DEFAULT SETTINGS 22
CLEANING INSTRUCTIONS 23
TROUBLESHOOTING SUGGESTIONS 25
PREVENTATIVE MAINTENANCE 26
TEMPERATURE CALIBRATION 27
HINGE ADJUSTMENT
EXPLODED VIEW and PARTS LIST 28
WIRING DIAGRAM M4200-3S 208V 32
M4200-3S 240V 33
M4200-3SEU 34
PARTS & SERVICE 37
CUSTOMER SERVICE DATA FORM 37
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.
M4200-3S (domestic) ovens are and listed under UL File
E6070 for 208V and 240V.
M903 2M-307323 Owners Manual M4200/M4200EU
M4200-3SEU (European) ovens comply with standards
for 380-415V 3NAC
1
AGENCY LISTING INFORMATION
STD 4
E6070
E6070
LIMITED WARRANTY STATEMENT
The following equipment manufactured by WELLS BLOOMFIELD,
LLC for
sale to McDonald's, Inc. is warranted against defects
in materials and workmanship for a period of two years from
the date of installation (
on the equipment
as indicated by the installation punch-tag
), and is for the benefit of the original purchaser:
a. M4200-3 Convection Oven (208V and 240V models
only)
b. 1016BVM Coffee Brewer
All other equipment manufactured by WELLS BLOOMFIELD, LLC 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 (
punch-tag on the equipment
purchaser:
as indicated by the installation
),
and is for the benefit of the original
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 BLOOMFIELD, LLC 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
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.
The prices charged by Bloomfield Industries 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 Bloomfield Authorized Service Agency or one of its sub-agencies. 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). Bloomfield Industries Authorized Service Agencies
are located in principal cities.
This warranty is valid in the United States 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 Bloomfield, LLC
10 Sunnen Dr., P.O.Box 430129 St. Louis MO 63143 USA
phone (314) 781-2777 or fax (314) 781-2714
for information and other details concerning warranty.
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
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 sixty (60) 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.
M903 2M-307323 Owners Manual M4200/M4200EU
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.
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 Bloomfield 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.
2
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-307323 Owners Manual M4200/M4200EU
3
SPECIFICATIONS
DIMENSIONS APPLIANCE OVEN CAVITY
Wide 30-1/8” (765mm) 14-3/8” (365mm)
Deep 25-1/4” (641mm) oven only 21” (533mm)
27-7/8” (682mm) incl. handle
High 25-1/8” (638mm) oven only 20” (508mm)
34” (863mm) incl. prep-top\
and casters
Door Swing 20" (508mm )radius
ELECTRICAL
M4200-3S 208 VAC 3ø 60Hz 8750 kW total 21 Amps per leg
M4200-3S 240 VAC 3ø 60Hz 8750 kW total 21 Amps per leg
M4200-3SEU 380-415V 3NAC 5-/60Hz L1 11.7 Amps
8750 kW total L2 11.7 Amps
L3 11.7 Amps
N 1.0 Amps
Note: Shipped from the factory 3 phase with pin-and-sleeve electrical plug.
Unit is NOT approved for conversion to single phase.
4
M903 2M-307323 Owners Manual M4200/M4200EU
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 and the Installation
Instruction Sheet packed with the appliance 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
22882 Stacking and Venting Kit
505504 Venting Duct Assembly Kit (single oven)
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-307323 Owners Manual M4200/M4200EU
5
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 #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 two screws at each end of adapter plate on back of
oven.
b. Loosen two 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 ba ck to allow
adequate air flow.
3. INSTALLING OPTIONAL CASTERS (NOTE: casters are not
provided and must be purchased separately: kits 21372 & 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 spirit
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 22226.)
a. Install adjustable legs, one on each corner of the appliance, in
he 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 21445 Prep Top allows the top of the M4200 to be used
as an NSF 4-compliant work surface.
b. Kit 21342 Oven Stacking Kit allows M4200 units to be
stacked 2-high. The kit provides extended ducting for the
vent system.
c. Kit 505504 - Convert to protein oven.
M903 2M-307323 Owners Manual M4200/M4200EU
6
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 ph ase must match the nameplate specifications, and electrical
service amps must meet or exceed the specifications listed on page 1.
IMPORTANT:
The appliance is shipped from the factory wired for 3-phase (3ø) electrical
service. This appliance is not approved for 1ø operation. Conversion of this
appliance to single-phase operation will void the warranty.
M4200-3S (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.
M4200-3SEU (European) field wiring must have a minimum cross-sectional
area of 1.5mm2.
NOTE: Strain relief supplied loose is for metal conduit connection. For flexible
power cords an approved strain relief fitting must be supplied by others.
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
M903 2M-307323 Owners Manual M4200/M4200EU
4. Secure all connections and reinstall terminal access cover.
5. “Equal Potential” grounding screw is located at rear of frame, marked
Remove screw and secure an appropriate grounding wire with
terminal.
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.
connect conduit strain relief.
• Connect supply power lines to terminals marked: L1, L2, L3
• Connect the neutral li ne terminal marked: N
• Connect green-with-yellow-stripe lead to ground lug 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
SUPPLYLINE 3
SUPPLYLINE 2
SUPPLYLINE 1
NEUTRAL
GROUND
L3
L2
L1
N
7
FEATURES & OPERATING CONTROLS
M4200 CONVECTION OVEN FEATURES
8
M903 2M-307323 Owners Manual M4200/M4200EU
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
V. PRODUCT RACK Holds product to be cooked
M903 2M-307323 Owners Manual M4200/M4200EU
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
FEATURES & OPERATING CONTROLS (continued)
SMART CONTROLLER
10
M903 2M-307323 Owners Manual M4200/M4200EU
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 and 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 (A uthorized 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.
2) In program mode used to exit out without saving.
M903 2M-307323 Owners Manual M4200/M4200EU
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
QUICK-GLANCE OPERATING GUIDE
WELLS CONVECTION OVEN OPERATING INSTRUCTIONS
(SEE OPERATION SECTION OF OWNERS MANUAL FOR MORE INFORMATION)
START-UP AND NORMAL OPERATION
ACTION DISPLAY WILL READ
1. Verify the oven is plugged into proper outlet.
2. Turn power switch to “ON” position. WELLS BLOOMFIELD <for 3 seconds>
3. Oven will begin to heat up to a pre-set
temperature of 375ºF. TOO COOL
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. OVEN READY
5. Press correct product button
Press “START” button. EXAMPLE: BISCUITS 3:00
6. At end of a cook cycle audible alarm will sound.
Alarm will automatically shut off when door is opened BISCUITS REMOVE
or CANCEL button is pushed.
7. Remove product and close door OVEN READY
8. 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.
SHUT-DOWN PROCEDURE
ACTION DISPLAY WILL READ
1. When last product is done for the day
open door of oven and let 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.
5. Press power switch to “OFF” position.
Interior of oven can then be safely cleaned.
M903 2M-307323 Owners Manual M4200/M4200EU
12
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 TOO COOL and the heat light will glow during
warm-up.
b. Display will read OVEN 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).
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.
M903 2M-307323 Owners Manual M4200/M4200EU
13
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. SCR BISCUITS
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 OVEN READY.
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 OVEN READY.
5. Cooling Timer is currently enabled for baking pies, and set to
10 minutes.
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. Display will read <PIES COOL>.
c. Do not box product until cooling time has expired.
M903 2M-307323 Owners Manual M4200/M4200EU
14
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
ACTION DISPLAY WILL READ
1) To enter programmin g mod e, press and hold
PROG button for 5 seconds TEMP CAL NO
This option allows temperature calibration
2) Press PROG button VIEW MENU ITEM NO
This option allows viewing programmed values of menu items
3) Press PROG button EDIT MENU NO
This option allows changing programmed values of menu items
4) Press PROG button SERVICE MENU NO
This option allows changes to temperature scale and to set real-time clock
5) Press PROG button TRANSFER MENU NO
This option allows history upload, read menu card, write menu card and restore defaults
6) Press PROG button SYSTEM INFO NO
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 OVEN READY
Button Designation:
# 1 BISCUITS
# 2 BAGELS
# 3 PIES
# 4 COOKIES
# 5 McGRIDDLES
M903 2M-307323 Owners Manual M4200/M4200EU
# 6 SCRATCH BISCUITS (disabled where ready to bake biscuits are used)
# 7 Disabled for future menu options
# 8 Disabled for future menu options
# 9 Disabled for future menu options
# 0 Disabled for future menu options
15
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.
ACTION DISPLAY WILL READ
IMPORTANT: DO NOT CHANGE FACTOR VALUES OR TIME VALUES FOR EXISTING MENU ITMES
13) Press PROG button. Display will read FACTOR 1 VALUE 00000
FACTOR 1 TIME 00000
14) Press PROG button repeatedly to cycle through
factor values and factor times (1 - 5).
Display will read <COOLING TIMER> COOLING TIMER NO
15) Press button #2 or #8 to enable or disable
cooling timer. COOLING TIMER YES
16) Press PROG button COOLING TIME
17) Set desired cooling time (0 - 60 minutes)
Press button #2 to increase time
or button #8 to decrease time 10:00
18) Press PROG button. Beep will sound to
indicate new information is saved. UPDATING MENU ITEM
(This is the end of this programming
cycle. If no other menu items are to be
programmed, go on to # 19. If other menu
items are to be programmed, press PROG
to return to # 6.) SELECT DAYPART # 1
19) Press START button EDIT MENU ITEM NO
20) Press START button OVEN READY
Programming the controller is now complete.
NOTE: ENTER PROGRAMMING and VIEW PROGRAMMING are disabled during coo k cycle and while
cooling timer is activated.
M903 2M-307323 Owners Manual M4200/M4200EU
17
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.
ENABLING SCRATCH BISCUIT BUTTON (#6)
ACTION DISPLAY WILL READ
1. Enter programming mode, press and
hold PROG button for 5 seconds CAL TEMP NO
2. Press PROG button until EDIT MENU is
reached EDIT MENU ITEM NO
3. Press #2 or #8 button for YES EDIT MENU ITEM YES
4. Press PROG button PASSWORD 0000
See page 22 for password and recommended oven settings
5. Press PROG button to select daypart. SELECT DAYPART # 1
NOTE: Only daypart #1 is activated
6. Press PROG button SEL>
7. Press # 6 button to select SCRATCH BISCUITS SCRATCH BISCUITS
8. Press PROG button to enable any name change S
9. Press PROG button ENABLE NO
10. Press #2 button to enable SCRATCH BISCUIT
Button ENABLE YES
11. Press PROG button CANCEL A/M MANUAL
(Should always be Manual)
12. Continue pressing PROG button until beep
sounds, indicating new information was saved UPDATING MENU ITEM
13. Press START button OVEN READY
Enabling Scratch Biscuit button (#6) is now complete.
IMPORTANT: DO NOT CHAN GE FACTOR VALUES OR FACTOR TIMES FOR EXISTING MENU
ITEMS
NOTE: Cannot go into edit or view program mode when cooling timer is activated or when in
a bake cycle.
CRATCH BISCUITS
M903 2M-307323 Owners Manual M4200/M4200EU
18
IMPORTANT: Programming changes to be performed by qualified persons only.
INSTRUCTIONS FOR CHANGING COOKIE SETTINGS
The Wells Convection Oven comes pre-programmed from the factory for cookies baked at 6:00 minutes at
a temperature of 375 F. Following is the procedure to change the settings only in the event your location
uses a different cookie or manufacturer.
NOTE: Oven must be in turned ON. No cooling timer or bake cycle can be active.
ACTION DISPLAY WILL READ
1. To enter programming mode, press and hold
PROG button for 5 seconds, display will read TEMP CAL NO
2. Press PROG button until display reads EDIT MENU NO
3. Press #2 or #8 button to select YES. EDIT MENU YES
4. Press PROG button and enter the PASSWORD 0000
5. Press PROG button SELECT DAYPART # 1
6. Press PROG button SEL->
7. Press button #4 to select COOKIES COOKIES
8. Press PROG button to cycle through C
9. Enter desired cook time. COOK TIME 06:00
10. Press PROG button and enter desired COOK TEMP 375
11. Press PROG button repeatedly to cycle FACTOR 1 VALUE 00000
IMPORTANT: Do not change FACTOR VALUES or TIMES for existing menu items.
12. If cooling timer is desired, COOLING TIMER YES
13. Press PROG button and enter the COOLING TIME 20:00
desired cooling time.
14. Press PROG button. UPDATING MENU ITEM
This indicates the end of this programming cycle.
If no other menu items need programming, continue with Step 15.
M903 2M-307323 Owners Manual M4200/M4200EU
If other menu items need programming, go to Step 6.
15. Press PROG button SELECT DAYPART # 1
16. Press START button until displays OVEN READY
Shows OVEN READY
Changing the cookie settings is now complete.
<EDIT MENU NO>
following coded password 9793
the following settings until display ENABLE YES
reads COOK TIME CANCEL A/M MANUAL
COOK TIME 06:00
temperature
through factor values and factor times (1-5) FACTOR 1 TIME 00000
until display reads COOLING TIMER. COOLING TIMER NO
press button #2 or #8 to select YES.
If not continue to Step 15.
PROGRAMMING INSTRUCTIONS (continued)
OOKIES
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.
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-307323 Owners Manual M4200/M4200EU
20
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
accepted. When finished, audible alarm
M903 2M-307323 Owners Manual M4200/M4200EU
will sound.
6. Remove card from slot and return to protective packaging.
7. Press START button. TOO COOL
21
PROGRAMMING INSTRUCTIONS (continued)
RECOMMENDED OVEN SETTINGS AS OF JAN. 1, 2004
IMPORTANT: Programming changes to be performed by qualified persons only.
SCALE FACTORS*
1 105 120
2 0 120
3 0 120
4 0 120
5 0 120
1 56 60
2 0 60
3 0 60
4 0 60
5 0 60
1 90 120
2 0 120
3 0 120
4 0 120
5 0 120
1 0 0
2 0 0
3 0 0
4 0 0
5 0 0
1 89 60
2 0 60
3 0 60
4 0 60
5 0 60
1 50 60
2 30 120
3 0 120
N/A
4 0 120
5 0 120
MENU ITEM DEFAULT SETTINGS
McDONALD’S PRODUCT FACTORY DEFAULT SETTINGS
NAME"
PRODUCT
"BISCUIT" ENABLE CANCEL COOK TIME COOK TEMP COOLING TIMER COOLING TIME FACTOR VALUE TIME
"DISPLAYED
3:00 375 NO N/A
A/M
MANUAL
YES
minutes
Base Time 3
A/M
"BAGELS" ENABLE CANCEL COOK TIME COOK TEMP COOLING TIMER COOLING TIME FACTOR VALUE TIME
Base Time 3
3:00 375 NO N/A
MANUAL
YES
minutes
A/M
"PIES" ENABLE CANCEL COOK TIME COOK TEMP COOLING TIMER COOLING TIME FACTOR VALUE TIME
Base Time 10
10:00 375 YES 10:00
MANUAL
YES
minutes
A/M
"COOKIES" ENABLE CANCEL COOK TIME COOK TEMP COOLING TIMER COOLING TIME FACTOR VALUE TIME
BAMA Base
6:00 375 NO N/A
MANUAL
YES
Time 6 minutes
A/M
Base Time 6
"McGRIDDLES" ENABLE CANCEL COOK TIME COOK TEMP COOLING TIMER COOLING TIME FACTOR VALUE TIME
6:00 375 NO N/A
MANUAL
YES
minutes
ENABLE CANCEL COOK TIME COOK TEMP COOLING TIMER COOLING TIME FACTOR VALUE TIME
"SCRATCH
BISCUITS"
12:00 375 NO
A/M
MANUAL
NO
minutes
Base Time 12
M903 2M-307323 Owners Manual M4200/M4200EU
BUTTON #
BUTTON #1
BUTTON #2
BUTTON #3
BUTTON #4
BUTTON #5
BUTTON #6
* Scale Factors - FACTOR VALUES 1 - 5 and FACTOR TIMES 1 - 5 should not be changed for existing menu items PASSWORD for oven settings : 9793
22
CLEANING INSTRUCTIONS
PREPARATION Allow oven to cool to 150ºF 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 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-307323 Owners Manual M4200/M4200EU
23
CLEANING INSTRUCTIONS (continued)
PREPARATION Allow oven to cool to 150ºF or less
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 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. Repl ace oven rack supports.
PROCEDURE IS COMPLETE
M903 2M-307323 Owners Manual M4200/M4200EU
24
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>
On startup controller
M903 2M-307323 Owners Manual M4200/M4200EU
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
Adjust latch
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.
25
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-307323 Owners Manual M4200/M4200EU
26
PREVENTATIVE MAINTENANCE (continued)
CAUTION:
BURN HAZARD
Allow appliance to cool
completely before adjusting.
Hinge Adjustment
M903 2M-307323 Owners Manual M4200/M4200EU
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
27
EXPLODED VIEW and PARTS LIST
M4200 and M4200EU
Cabinet & Related Components
D
81
40
M903 2M-307323 Owners Manual M4200/M4200EU
28
EXPLODED VIEW and PARTS LIST (continued)
ITEM DESCRIPTION M4200 (EU) QTY
1 ASSY, CAVITY 1
6 PANEL, CONTROL 1
10 BRACKET, MOTOR MOUNT 1
13 BRACKET, CAVITY SUPPORT 2
14 GROMMET, 7/8" O.D. 2K-31040 2
17 ASSY, BAFFLE SUPPORT 2
19 MOUNT, TEMP SENSORS 1
20 COVER, DOOR GASKET 4
21 CLIP, RACK SUPPORT F6-43889 8
22 HANDLE ASSEMBLY 1
24 BRACKET, HI-LIMIT THERMO 1
29 ASSY, DOOR COMPLETE F6-504444 1
30 GASKET, DOOR, SIDE F6-46313 2
35 GASKET, DOOR, TOP/BOT F6-46314 2
36 ASSY, OVEN TOP 1
38 HANGER, CORD 1
39 PANEL, EXTERIOR SIDE 2
40 INSULATION, MOTOR MOUNTING 1
42 ASSY, FRAME 1
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 1
57 ASSY, VENT DUCT 1
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 DD-43913 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) 1
92 TIE, WIRE, STANDOFF (not shown) 2
101 BAFFLE, OVEN 1
102 RACK, PRODUCT WS-21376 3
103 SUPPORT, RACK (pk 2) WS-21375 2
cc CLIP, TINNERMAN 2C-37943 AR
OPTIONAL PARTS
A LEG 4" ADJUSTABLE (SET OF 4) DD-22226 1
B CASTER, LOCKING (FRONT) WS-21373 1 (SET OF 2)
CASTER, SWIVEL (REAR) WS-21372 1 (SET OF 2)
C PREP TOP WS-21445 1
CLIP, PREP TOP 4
D KIT, EXTERIOR VENT DUCT (SINGLE OVEN) WS-505504 1
M903 2M-307323 Owners Manual M4200/M4200EU
29
EXPLODED VIEW and PARTS LIST (continued)
G
2 pc. 3pl.
61
24
M4200 & M4200EU
Internal Components
64
31
59
63
62
6
71
70
19
25
91
ref.
5
12
9
70
26
208V
240V
380-415V
15
11
18
2
4
28
7.1
13
72
3
10
40
7
8
34
81
43
89
30
23
ref.
M903 2M-307323 Owners Manual M4200/M4200EU
7.2
66
67
67.1
EXPLODED VIEW and PARTS LIST (continued)
ITEM DESCRIPTION M4200 M4200EU QTY
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 2U-44687 1
6 PANEL, CONTROL 1
7 MOTOR, 1/4 HP WS-63932 WS-63932 1
7.1 START CAPACITOR 69823 69823 1
7.2 BRACKET, START CAPACITOR 2V-300933 2V-300933 1
8 SPACER, MOTOR MOUNT 4
9 BLOWER WHEEL 2U-43797 2U-47397 1
10 BRACKET, MOTOR MOUNT 1
11 SSR MODULE 2E-304615 2E-304615 1
12 RELAY, E-SAFE 2E-306967 2E-306967A 1
13 ASSY, CURRENT DETECTOR 2E-306976 2E-306976 1
14 GROMMET, 7/8" O.D. 2K-31040 2K-31040 2
15 CONTACTOR, HI-LIMIT 208V WS-57779 1
RELAY, HI-LIMIT 240V and 380-415V 2E-307328 2E-307328 1
18 TRANSFORMER 2E-305804 2E-303286 1
23 READER, MAGNETIC CARD 2E-306977 2E-306977 1
24 BRACKET, HI-LIMIT THERMO 1
25 THERMOSTAT, HI-LIMIT 2T-45180 2T-45180 1
26 THERMOCOUPLE 2J-304580 2J-304850 1
28 LABEL, GROUND SYMBOL 64584 64584 1
31 ASSY, PROXIMITY SWITCH F6-45239 F6-45239 1
34 FUSEHOLDER, 10A 240V (M4200-3SV) 2E-34769 2
FUSEHOLDER, 5A 240V (M4200EU) DD-73795 1
40 INSULATION, MOTOR MOUNTING 1
42 ASSY, FRAME F6-504609 F6-504609 1
43 FUSE, 10A 240V (M4200-3SV) 2E-34768 2
FUSE, 5A 240V (M4200EU) 2E-73794 1
59 BRACKET, PROX SWITCH F6-43787 F6-43787 1
62.1 INNER ELEMENT, 208V (4" GAP) 2N-43872UL 1
62.2 INNER ELEMENT, 240V (4" GAP) 2N-43783UL 2N-43783UL 1
63.1 MIDDLE ELEMENT, 208V (2.5" GAP) 2N-43866UL 1
63.2 MIDDLE ELEMENT, 240V (2.5" GAP) 2N-43800UL 2N-43800UL 1
64.1 OUTER ELEMENT, 208V (1" GAP) 2N-43873UL 1
64.2 OUTER ELEMENT, 240V (1" GAP) 2N-43949UL 2N-43949UL 1
66 ASSY, POWER CORD 1
67 STRAIN RELIEF 2K-48754 2K-48754 1
67.1 NUT (ONLY), STRAIN RELIEF WS-65504 WS-65504 1
70 GASKET, ELEMENT 2I-43834 2I-43834 1
71 COVER, ELEMENT GASKET INNER F6-43836 F6-43836 1
72 COVER, ELEMENT GASKET OUTER F6-43837 F6-43837 1
81 CONTROLLER, TIME & TEMPERATURE 2J-306966 2J-306966 1
89 SWITCH, ON/OFF 2E-305295 2E-306824 1
93 OP. MANUAL M4200 (not shown) 2M-307323 2M-307323 1
M903 2M-307323 Owners Manual M4200/M4200EU
31
WIRING DIAGRAM M4200 208V
PICTORIAL WIRING DIAGRAM FOR
M4200 OVEN 208, 3 PHASE
(3 PCS)
AIR HEATER
THERMOCOUPLE
19
RED
YEL.
DETECT
CURRENT
HI-LIMIT
THERMOSTAT
26
18
55
54
52
50
ASSY
19
14
32
25
35
53
51
WIRE
10
7
4
1
NUT
11
89
56
23
E-SAFE
RELAY
1
2
12
32
24
42
43
FAN
COOLING
A1
A2
L1
T1
L2
T2
L3
T3
47
48
HI-LIMIT
CONTACTOR
(2PCS)
10AMPFUSE
11
10
5
WHITE
RED
GROUND
POWER
SUPPLY
P/N 307321 REV.A
CORD
41
44
BLACK
17
P2
P1
T3 T2 T1
L3 L2 L1
45
46
20
BLOCK
TERMINAL
LOOP
WIRE NO.22
49
FIVE TIMES
23-27
21
L3
4
18
6
HZ
50/60
AMPS 3 PHASE
21
L2
21
21
L1
21
21
22
TRANSFORMER
SSR
6
7
MOTOR
+-
17
42
CONFIGURED FOR 208V
240
208COM
2
240
208
VOLTS
1
43
3
9
WHITE
BLOWER
MOTOR
M
M903 2M-307323 Owners Manual M4200/M4200EU
GRD/YEL
DOOR
SENSOR
SW.
BLACK
36
34
MOTOR RUN
CAPACITOR
32
33
27
7
+
LIGHTED
ROCKER
SWITCH
3
5
33
11
35
CONTROLLER
NCC
TIME / TEMPERATURE
23-27
32
TERMINAL
BLOCK
1K OHM
RESISTOR
23-27
WIRING DIAGRAM M4200 240V
M903 2M-307323 Owners Manual M4200/M4200EU
M4200 OVEN 240 VOLTS, 3 PHASE
PICTORIAL WIRING DIAGRAM FOR
(3 PCS)
AIR HEATER
THERMOCOUPLE
19
RED
YEL.
DETECT
CURRENT
HI-LIMIT
THERMOSTAT
26
18
55
54
52
50
ASSY
19
14
32
25
35
51
WIRE
42
43
E-SAFE
RELAY
FAN
COOLING
A1
A2
L1
53
T1
L2
T2
L3
T3
LOOP
FIVE TIMES
WIRE NO.22
47
48
HI-LIMIT
RELAY
17
49
6
3
9
5
2
8
B
A
7
4
1
(2PCS)
10AMPFUSE
11
10
5
WHITE
RED
GROUND
POWER
SUPPLY
P/N 307321 REV.(-)
CORD
41
44
BLACK
45
46
20
BLOCK
TERMINAL
23-27
21
L3
4
18
6
HZ
50/60
L2
L1
AMPS 3 PHASE
21
21
21
21
21
22
TRANSFORMER
SSR
6
7
MOTOR
+-
17
42
CONFIGURED FOR 240V
240
208COM
2
240
208
VOLTS
1
43
3
9
WHITE
BLOWER
MOTOR
NUT
M
GRD/YEL
DOOR
SENSOR
SW.
BLACK
36
34
MOTOR RUN
CAPACITOR
1
2
11
10
12
89
7
56
4
1
23
32
24
33
27
7
+
32
LIGHTED
ROCKER
SWITCH
3
5
33
11
35
CONTROLLER
NCC
TIME / TEMPERATURE
23-27
33
TERMINAL
BLOCK
1K OHM
RESISTOR
23-27
WIRING DIAGRAM M4200EU
43
42
56
55
57
54
M4200EU OVEN 380-415 3NAC
PICTORIAL WIRING DIAGRAM FOR
(3PCS)
AIR HEATER
FIELD CONVERTIBLETO SINGLE PHASE
REFER TOWIRING ILLUSTRATION BELOW
THERMOCOUPLE
19
14
RED
YEL.
HI-LIMIT
AUTORESET
THERMOSTAT
18
52
50
WIRE #22LOOPED
26
25
FIVE (5)TIMES
19
32
35
53
51
WIRE
NUT
11 10
123
23
SENSOR
CURRENT
22
1
2
12
987
654
24
+
N
A1
A2
L1
T1
T2
L2
L3
T3
-+
SSR
MOTOR
6
BLOWER
MOTOR
33
27
7
COOLING
39
RELAY
E-SAFE
18
3
FAN
48
23-27
17
7
WHITE
M
BLACK
POWER SWITCH
FUSE
5 AMP
9
6
8
5
B
7
A
4
RELAY
HI-LIMIT
4
6
5
2
1
CAPACITOR
37
6
56
11
39
44
45
TRANSFORMER
12
11
8
7
34
BLOCK
TERMINAL
57
46
BLOCK
TERMINAL
1
38
2
DOOR
SENSOR
SW.
33
1K OHMS
RESISTOR
GROUND
36
56
P/N 307322REV.(-)
L3 L2 L1 N
1.0
N
11.7
L3
50/60HZ
L2
11.7
AMPS 3PHASE
L1
11.7
240
VOLTS
M903 2M-307323 Owners Manual M4200/M4200EU
27
GROUND
N
TERMINAL
BLOCK
L1
L2
L3
SINGLE PHASE
WIRING ILLUSTRATION
44
45
35
46
10
47
49
3
2
1
42
38
43
3
9
GRN/YEL
MOTOR RUN
32
11
CONTROLLER
NCC
TIME /TEMPERATURE
23-27
23-27
34
NOTES
M903 2M-307323 Owners Manual M4200/M4200EU
35
NOTES
36
M903 2M-307323 Owners Manual M4200/M4200EU
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.) WS-21376
PREP TOP WS-21445
WALL SPACER KIT DD-21717
LEG, OVEN, S/S (4 NEEDED) 2A-45598
VENTING KIT, SINGLE OVEN WS-505504
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 Bloomfield, LLC
2 Erik Circle
P. O. Box 280
Verdi, NV 89439
Service Parts Dept.
phone: (775) 689-5707
fax: (775) 689-5976
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. _______________
EQUIPMENT SERIAL NO. _______________
M903 2M-307323 Owners Manual M4200/M4200EU
VOLTAGE: (check one) 208V 240V 380-415V 3NAC
please have this information available if calling for service
37
Genuine Parts
Protect - YOU - All - Ways
SERVICE TRAINING - QUALITY SERVICE
CUSTOMER SATISFACTION
Commercial Food Equipment Service Association
Wells Bloomfield proudly supports CFESA
Commercial Food Equipment Service Association
SERVICE TRAINING - QUALITY SERVICE
CUSTOMER SATISFACTION
PREPARED FOR
BY
WELLS BLOOMFIELD, LLC
10 Sunnen Drive P.O.Box 430195
St. Louis, MO 63143 USA
telephone: 314-781-2777
fax: 314-781-2714
www.wellsbloomfield.com
PRINTED IN UNITED STATES OF AMERICA
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