Wells M4200-3 Installation Manual

CONVECTION OVEN
WELLS MODELS WITH TOUCHPAD TEMPERATURE CONTROLLER/TIMERS
M4200-3, M4200-3S

This equipment chapter is to be inserted in the Oven section of the Equipment Manual.

MANUFACTURED EXCLUSIVELY FOR

McDONALD'S BY

WELLS MANUFACTURING COMPANY

2 ERIK CIRCLE VERDI, NEVADA 89439

PHONE: [phone] TOLL FREE: [phone]

FAX: [phone]

FAX: [phone] (FOR ORDERS ONLY)

TABLE OF CONTENTS ............................................................................................................Page 1

WARRANTY.............................................................................................................................Page 2

INTRODUCTION SAFETY........................................................................................................ Page 2

PARTS IDENTIFICATION/FUNCTION/PHOTOS........................................................................ Page 3

HARDWARE IDENTIFICATION .............................................................................................. Page 15

EQUIPMENT SET UP AND CLOSE PROCEDURES................................................................ Page 16

TROUBLESHOOTING............................................................................................................ Page 19

ORDERING/SERVICE INFORMATION.................................................................................... Page 20

NON-SCHEDULED MAINTENANCE....................................................................................... Page 20

WIRING PICTORIAL/WIRING DIAGRAM ................................................................................ Page 31

WARRANTY STATEMENT..................................................................................................... Page 32

The M4200-3 and M4200-3S Convection Ovens manufactured by Wells Manufacturing are warranted to be free
from defects in materials and workmanship for a period of one year from the date of original installation and is for
the benefit of the original purchaser only, BUT NOT AGAINST DAMAGE CAUSED BY ABUSE, FAULTY

INSTALLATION, INCLUDING IMPROPER ELECTRICAL CURRENT. THIS WARRANTY IS THE COMPLETE
AND ONLY WARRANTY, THERE BEING NO OTHER WARRANTY, EXPRESSED OR IMPLIED IN LAW OR IN
FACT, INCLUDING BUT NOT LIMITED TO, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY
PARTICULAR PURPOSE, AND/OR FOR DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES IN
CONNECTION WITH WELLS PRODUCTS.

Wells' obligation under this warranty is limited to the repair of defects or replacement without charge by a WELLS
factory authorized service agency or one of its sub-service agencies. This service will be provided on customer's
request. Please contact the Service Department: Wells Manufacturing Company, P.O. Box 280, Verdi, Nevada,
89439; to arrange service or additional information and other details concerning the product and/or this warranty.

This manual is for the exclusive use of licensees and employees of McDonald's Systems, Inc.
Printed in July EM 05
© 1990 McDonald's Corporation All Rights Reserved
Printed In The United States of America

CONVECTION OVEN

Model M4200-3S

PRODUCT FEATURES

• Six-channel built-in timer.

• Solid-state temperature controller with on-demand
digital temperature display maintains accurate
temperature.

• Stainless steel interior and exterior for durability and
easy cleaning.

• Refrigerator-type door handle.

• Three fully adjustable shelves.

• Reversible door.

ACCESSORIES

21342 Oven stacking kit
21330 Caster kit
21445 Oven prep top

DIMENSIONS

MODEL INSTALLED

DIMENSIONS WEIGHT
W D H

M4200-3S 30" 25 1/2" 25" 204 Ibs. 232 Ibs.

SHIPPING

WEIGHT

ELECTRICAL INFORMATION Voltage: 208V OR

240V, three phase. Power: 208V: 7.5 KW, 21.8
amps per line maximum. 204V: 8.4 KW, 21.2
amps per line maximum.
Oven is provided with a low profile pin-and-sleeve plug

(L43-30P9).

PRODUCT FINISH

Stainless steel top, front, sides and back.

PRODUCT WARRANTY

The M4200-3S Convection Oven manufactured by Wells is
warranted to be free from defects in materials and
workmanship for a period of one year from the date of
original installation and is for the benefit of the original
purchaser only. This warranty does not apply to damage
resulting from fire, water, burglary, accident, abuse,
misuse, acts of God, faulty installation including improper
electrical supply.

THIS WARRANTY IS THE COMPLETE AND ONLY WARRANTY,
THERE BEING NO OTHER WARRANTIES, EXPRESSED OR
IMPLIED IN LAW OR IN FACT, INCLUDING BUT NOT LIMITED
TO, WARRANTIES OF MERCHANT-ABILITY OR FITNESS FOR
ANY PARTICULAR PURPOSE, AND/OR FOR DIRECT,
INDIRECT, OR INCONSEQUENTIAL DAMAGES IN
CONNECTION WITH WELLS' PRODUCTS.

Wells' obligation under this warranty is limited to the repair
of defects or replacement without charge by a WELLS
factory authorized service agency or one of its sub-service
agencies. This service will be provided on customer's
premises.

1

ELECTRICAL SPECIFICATIONS:

VOLTS KW AMPS PER LINE THREE PHASE NEMA PLUG CONFIGURATION

L1 L2 L3
208 7.5 20.8 21.8 21.8 L430P9

M-4200-3 240 8.4 20.2 21.2 21.2

M4200-3S 208 7.5 20.8 21.8 21.8

240 8.4 20.2 21.2 21.2

Wells Manufacturing Company

2 Erik Circle, P.O. Box 280 • Verdi, NV 89439

[phone] FAX: [phone]

1994 Wells Manufacturing Company Printed in U.S.A. Item No. 43957 F

TOLL-FREE FAX: [phone], for orders only

1a

INTRODUCTION

These commercial Convection Oven Models M4200­3 and M4200-3S are designed to bake food products
uniformly and economically. They incorporate state­of-the-art, solid-state electronic controls for
controlling the cooking temperature and time. The
M4200-3 and M4200-3S are 7.5 KW ovens. The
M4200-3S is the stackable model of the oven.

SAFETY

Knowledge of proper installation, operation and
maintenance procedures is essential to ensure safe
operation of any equipment. The instructions
contained herein are meant as guidelines:

• Always have dry hands prior to turning the

ON/OFF/FAN switch ON or OFF or FAN.

• Turn OFF the ON/OFF/FAN switch anytime the

oven is not in use.

• If an electrical shock is felt when touching the

oven, disconnect the power immediately and call
Wells Service Department for assistance and
service.

• Have the electrical power receptacle installed by

a licensed electrician. Make sure that the

equipment is properly grounded.

• If you find that the power cord is frayed, do not
plug it into the power receptacle. If it is already
plugged in, disconnect the plug after shutting
OFF the circuit breaker.

• DISCONNECT THE POWER CORD BEFORE
ATTEMPTING ANY REPAIRS AND/OR
CLEANING THE OVEN.

• Allow the unit to cool before cleaning.

• DO NOT SPLASH WATER ON OR INTO THE
OVEN. WET ELECTRICAL COMPONENTS AND
WIRING PRESENT A HIGH SHOCK HAZARD.

• Do not operate the unit unless all 4 casters are
installed or the oven has been properly stacked
on top of another oven.

Hazard Communication Standard (HCS) —
Procedure(s) in this equipment manual include
the use of chemical products. These chemical
products will be highlighted with bold face letters
followed by the abbreviation (HCS) in the text of
the manual. See the Hazard Communication
Standard (HCS) Manual for the appropriate
Material Safety Data Sheet(s) (MSDS).

2

ITEM

1 21445 Prep-top Assembly 1 Pre-assembled parts no. 1A, 2, 3.

1A 63952 Prep-top (TOP) 1 Provides working surface.

*2 63953 Prep-top insulation 2 Thermal Barrier for the prep-top.
*3 63950 Prep-top (Bottom) Cover 1 Protects prep-top insulation.

4 63788 Oven top 1 Covers and protects top insulation.
5 65145 Heat ON Light (amber) 1 Indicates oven is heating.
6 63918 ON/OFF/FAN Switch 1 Turns the electrical power ON, OFF, or FAN only.
7 65146 Power ON Light (red) 1 Indicates power is ON.

8 64964 Oven controller 1
9 65138 Control Panel 1 Used to mount electrical components.

10 63801 Right Front Corner Trim 1 Covers oven frame.

PART

NO.

DESCRIPTION QTY. FUNCTION

Controls oven. Sets, adjusts and programs oven
cooking time and temperature.

*Not Shown

3

ITEM

PART

NO.

DESCRIPTION QTY. FUNCTION

11 63828
12 63913 Door Pin Cover 2 Allows access to the door hinge pin.

13 63790 Side panel (left & right) 2 Covers and protects oven sides.
14 65156 Door Assembly 1 Covers and provides access to oven cavity.

15 63946

*16 63945 Door Striker Spacer 1

17 63804 Lower Front Trim 1

18 21372

Prep-top mounting bracket
(not on M4200-3S)

Door Handle and Latch
Assembly

Front Casters with Brake (not
on M4200-3S)

4 Brackets securing prep-top to the oven.

Provides access to the oven cavity and secures the

1

door closed.
Provides correct positioning for the door handle

assembly.
Provides access to the bottom door adjustment and the

door ajar sensor.
Allows oven to be moved about and secures it in place

2

when stationary.

*Not Shown

4

ITEM

19 63827 Cord Hanger 1 Bracket for Power Cord storage.
20 63766 Rear Access Cover 1
21 21486 Power Cord Assembly 1 Pre-assembled parts no. 22, 23, 25.
22 56324 Power Cord 10/4, Type 50 1 Transfers electric power to the unit.
23 65501 Plug LP-430P9 1 Connects oven to the electrical power supply.
24 65583 Right Rear Panel 1 Covers high voltage components from the rear.
25 65502 Cord Strain Relief 1 Secures the power supply cord to the oven.

26 65173 Rear Left Panel 1 Covers wrap insulation and frame.
27 54769 Fuse holders 2 Secures fuse 10A x 300V.

*28 54768 Fuse 10A x 300V 2

29 21373

*Not Shown

PART

NO.

DESCRIPTION QTY. FUNCTION

Rear casters (no brake) (not on
M4200-3S)

Allows access to main power supply connection and
high voltage components.

Over-current protection; device for the solid state
controls and the motor.

2 Allows the oven to be moved about.

5

ITEM

30 63817 Top and Bottom Door Gasket 2 Seal to retain the interior oven environment.
31 64504 Interior Air Baffle 1 Uniformly dispenses heated air throughout the oven.
32 63820 Side Door Gasket 2 Seal to retain the interior oven environment.
33 21375 Oven Rack Supports 2 Supports oven racks.
34 21376 Oven Rack 3 Supports product pans.

PART

NO.

DESCRIPTION QTY. FUNCTION

6

ITEM

35 63829 Heating Element Bracket 6 Holds the heating elements to the inner cavity.

36 63836 Inner Heat Gasket Cover 1 Protects and secures the heating element gasket.

PART

NO.

DESCRIPTION QTY. FUNCTION

*37 63834 Heating Element Gasket 2

38 63881 High-Limit Top Clip 1 Secures the high-limit thermostat bulb in place.

39 63883 High-Limit Bottom Clip 1 Secures the high-limit thermostat bulb in place.

40 63903 Blank Hinge Cover 1

41 63759 Cavity Assembly 1 Provides the interior surface of the oven.
*42 65015 Rear Cavity Support 2 Supports cavity.
*43 63889 Rack Support Clip 4 Supports the oven rack support.

Element thermal seal to retain the inner cavity
environment.

Covers the unused hinge hole for left to right door
option.

*Not Shown

7

ITEM

PART

NO.

DESCRIPTION QTY. FUNCTION

44 63873

63949 (240 Volt Oven) 1

45 63866

63800 (240 Volt Oven) 1

46 63872

63783 (240 Volt Oven) 1

47 63797 Blower Wheel 1 Circulates heated air throughout the oven cavity.

48 51040 Bushing 1 Protects electrical wiring to the door ajar switch.
49 65647 Ajar Switch Shield 1 Protects the switch from interior oven heat.

50 63787 Reed Switch Bracket 1 Supports the door ajar sensor.
51 65239 Door Ajar Switch 1 Sensor for door ajar.

52 63876 Baffle Support Assembly (Rear) 2 Supports the interior baffle.

Outer Heating Element (208
Volt Oven)

Center Heating Element (208
Volt Oven)

Inner Heating Element (208
Volt Oven)

1 Heats the oven cavity interior and air.

1 Heats the oven cavity interior and air.

1 Heats the oven cavity interior and air.

8

ITEM PART

NO.

53 65211 High-Limit Thermostat 1 Safety device which prevents excessive oven

54 63840 High-Limit Bracket 1 Supports the high-limit thermostat.
55 63898 Control Panel Hinge

Bracket Assembly

56 63897 Angle Frame Pin Hinge 2 Secures the control panel to the oven and allows it to

*57 63907 Wire Harness

Stand-Off

*Not Shown

DESCRIPTION QTY. FUNCTION

temperatures.

2 Provides pivot shaft to the control panel.

pivot open.

1 Secures wire harness at the front of the unit.

9