Wells MDMW-3 Service Manual

WELLS MODEL MDMW-3

Place this chapter in the Marinators section
of the Equipment Manual.

MANUFACTURED

EXCLUSIVELY FOR

McDonald’s®

BY

WELLS MANUFACTURING

COMAPNY

265 HOBSON STREET

SMITHVILLE, TENNESSEE 37166

PHONE: [phone]

FAX: [phone]

MARINATOR

TABLE OF CONTENTS

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

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

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

PARTS IDENTIFICATION/FUNCTION/PHOTO .....................................Page 3

EQUIPMENT SET-UP AND CLOSE PROCEDURES .................................Page 7

TROUBLESHOOTING ........................................................Page 7

NON-SCHEDULED MAINTENANCE .............................................Page 9

ORDERING/SERVICE INFORMATION ...........................................Page 9

WIRING DIAGRAM ...........................................................Page 11

WIRING PICTORIAL ..........................................................Page 12

This manual is for exclusive use of licensees and employees of McDonald’s Systems, Inc

© 1989 McDonald’s Corporation
All Rights Reserved

2M-43173, Rev.

2

PARTS IDENTIFICATION / FUNCTION / PHOTOS

ITEM PART NO. DESCRIPTION QTY. FUNCTION APPLICATION

Marinator holds hot food in 2/3rd size pan

1 DD-21134A WARM MDMW-3LWC 120V 1/3 1

equipped with false bottom tray, lids, 2 piece
divider and timer mounting bracket.

2 2G-41132 PAN INSERT MDMW-1 2 & 3 1

3 P2-41155 BOTTOM FLASE 2/3 WARMER 1

4 5D-21662 LID COVER 2 Lids to cover pan.
5 P2-42777 BRKT TIMER MDMW-3 1 To mount the countdown timer.

P2-42776 CORD SET ASSY 6FT 14/3 MD

6

P2-42559 CORD SET

2E-41488 CORD ASM/NO PLUG 14/3 SJTO MDMW3N-240
7 P2-41980 PRODUCT DIVIDER INSERT 1 Used to separate products.
8 P2-41981 PRODUCT DIVIDER CENTER 1 Used to separate products.

Pan equipped with false botom tray to hold
food.

Holds hot food and lets grease drip through

holes onto water (5 . Oz per pan.) (148 ml)

Protective wire set to connect appliance to

1

electrical supply system and to ground the
unit.

MDMW3LWC-120

MDMW3TL-120,
MDMW3TLP-120V

3

PARTS IDENTIFICATION / FUNCTION / PHOTOS

ITEM PART NO. DESCRIPTION QTY. FUNCTION APPLICATION

9 2E-30330 SWITCH ON OFF TOGGLE 20A 1 Turns electric power ON or OFF to the marinator.

10 2J-31157 Power Telite (Red) 1 Indicates power is ON.

11 - Specication Plate 1

12 2E-40590 Receptaclee 5-15R 1 120V, 4Amp, 500 Watt outlet for timer.

13 2R-Y7690 Knob Control MDMW 1 To Manually set temperature of water in the pan.

Indicates model number, serial number and electrical
rating of the marinator.

2D-40587 PLATE CALIBRATION 140-200

14

2D-40880 PLATE CALIBRATION 60-93 240V

2J-40563 Thermostat Telite (White)

15

2J-40877 LIGHT SIGNAL WHITE 250V 240V

Inscribed with temperature scales of 140°F to 200°F

1

(60°C to 93°C). Permits calibration to the indicator point

of the thermostat knob.

Telite cycles ON/OFF with thermostat. Indicates the

1

marinator is calling for heat.

120V

120V

4

PARTS IDENTIFICATION / FUNCTION / PHOTOS

ITEM PART NO. DESCRIPTION QTY. FUNCTION

16 P2-40597 PANEL CONTROL 1 Used to mount electrical components

17 P2-42775 PANEL, REAR 1 Encloses rear of marinator.

18 P2-42774 WRAP SHELL MDMW-3 1 WRAP SHELL MDMW-3

19 DD-60594 Water Pan w/ Water Level Markings 1

20 WS-21659 DIVIDER WATER PAN MDMW 1 Used to support 1/3 size pans.

Pan used to hold heated water and
2/3rd size pan.

5

PARTS IDENTIFICATION / FUNCTION / PHOTOS

ITEM PART NO. DESCRIPTION QTY. FUNCTION APPLICATION

20 P2-40639 Bottom Cover Panel 1

2H-40660 Fiberglass Insulation (sides)

21

2H-40661 Fiberglass Insulation (bottom)

22 WS-60892 Thermostat 1 To maintain water pan temperature

Thermostat Bulb (Part of Item

23

24 P2-47023 Thermostat Clamp Plate 1 Clamps thermostat bulb to the water pan.

22) (Under Thermostat Clamp
Plate)

Panel to cover electrical components at the
bottom.

Insulation to prevent heat dissipation through
sides and bottom.

1 Temperature sensing part of the thermostat.

25 WS-60599

2N-40566UL Elem 120V 900W MDMW

26

2N-40876UL Elem 240V 100w mdmw1,2,33 240V

27 2E-40586 Wiring Harness 1

28 P2-40638 Cover, Insulation 1 Panel to retain insulation

29 2A-40564 Foot Rubber 4

PAN CLIP ASSY FOR ELEM
MDMW

Clips retain heating element and elements

1

radiates heat into water pan.

1 Heat source for marinator.

Electrical distribution system for electrical
components.

Non-skid and raises marinator off table for proper
air circulation.

120V

6

MDMW-3 HARDWARE IDENTIFICATION

Item Part No Description Qty

A 2C-40670 SCREW 1/4-20 X 3/8 SL TR MS 2

B 2K-42588 STRAIN RELIEF HUBBELL 1

C 2C-35736 NUT 8-32 HEX 1

D 2C-40612 SCREW 1/4-20 X 1/2 SL TR MS 4

E 2E-33192 PANEL ON / OFF SWITCH 1

F 2C-35135 SCREW 6-32 X 1/4 PH FIL HD 16

G 2M-40565 LABEL NOT FOR USE OVER 50 1

H 2C-40732 SCREW 6-32 X 1/4 SL TR HD 2

J 2C-35492 SCREW 8-32 X 1/2 PH FL HD 6

K 2C-35495 WASHER FLAT #6 SS 4

M 2C-35313 NUT 10-32 HEX MS SS 4

N 2C-30397 CLIP ELEM WRMR SML 5

P 2C-35137 NUT TNR 8-32 LONG 6

SET-UP AND CLOSE PROCEDURES

Set-Up:

1. Plug the power cord into the appropriate
receptacle.

2. Fill the water pan with warm water up to the water
level mark on the sides of the pan.

3. Turn the thermostat dial to the correct setting.

4. Install the 2/3rd size pan.

5. Place the false bottom tray into the pan.

6. Cover the pan with lids. Place the power switch in
the ON position. The red indicator light will come
ON.

7. Allow the marinator to warm up for 60 minutes
before placing food product inside.

Close:

1. Place the power switch in the OFF position.

2. Unplug the marinator and the timer(s).

CAUTION: Equipment and water contents
are hot. Use breakfast cart to transport the
marinator to sink area.

Use necessary precautions such as gloves to handle hot
marinator and water or let it cool before handling.

3. Remove the lids and 2/3rd size pan.

4. Remove the timer mounting bracket.

5. Empty the water from the water pan.

6. Using a clean cloth towel, wipe the water pan.

7. Using a hot solution of McD All Purpose
Concentrate (APC) from the sink proportioner
and a warm solution of McD Sanitizer, wash and
sanitize all lids and pans and set aside to air dry
over night.

CAUTION: Do not immerse marinator in water.
Damage will occur if unit is submerged in water.

8. Store the marinator in designated area.

TROUBLESHOOTING

1. DEFINE the problem and accurately determine
what the malfunction is.

2. Determine the BASIC CAUSE.

3. ELIMINATE the cause and repair the malfunction.

It is very easy to dene the malfunction, but sometimes
very difcult to identify the cause.

If the problem remains after following the suggestions
listed, contact your service representative.

7

TROUBLESHOOTING GUIDE

WARNING: Inspection, testing and repair of electrical equipment shoudl be performed only

by qualied service personnel. The unit should be unplugged when servicing, except when

electrical test are required.

DANGER: Use extreme care during electrical circuit test. Live circuits will be exposed.

TROUBLESHOOTING GUIDE

PROBLEM PROBABLE CAUSE CORRECTIVE ACTION

a. Power switch not ON a. Turn power switch ON.

b. Store circuit breaker OFF. b. Reset store circuit breaker.

Warmer does not heat. Red telite
does not come ON.

Pans oating in water. a. Too much water in the water pan.

Product is too dry.

c. Cord-plug not plugged into the receptacle.

d. Power switch defective. d. Replace power switch (see page 8).

e. Cord not connected inside. e. Call service agency.

a. No water under false bottom

b. Temperature too high.

c. Plug in the cord and make sure twist lock in

engaged.

a. Carefully scoop water out with a coffee cup until

water level is down to the mark.

a. Add 5 . Oz (148 ml) of water under the ase

bottom tray.

b. Perform calibration check according to Planned

Maintenance Card 61.

Power switch is ON. But:

a. No thermostat telite (white)

b. No thermostat telite and no

heat.

c. No heat, but thermostat telite

is ON.

Thermostat telite on and water

boils at 180°F (82°C) setting.

Thermostat Telite on but water

temperature does not reach 180°F
(82°C) setting.

Unit is working but timer does not

work.

a. Thermostat set too low, or thermostat telite

defective.

b. Thermostat defective. b. Replace thermostat. (see page 10.)

c. Heating element defective or not connected.

a. Thermostat out of calibration.

b. Defective Thermostat. b. Replace thermostat. (see page 10.)

a. 2/3rd size pan not in the unit. a. Install the 2/3rd size pan in the unit.

b. Thermostat out of calibration. b. Recalibrate per Planned Maintenance Card 61.

c. Defective thermostat or heating element.

d. 2/3rd size pan has lime build-up. d. Delime per Planned Maintenance Card 61.

a. Timer cord does not plugged into convenience

outlet.

b. Timer cord defecttive. b. Try another timer.

c. Convenience outlet on the marinator not

wired.

d. Defective timer. d. Call service agency.

a. Rotate thermostat knob to higher setting. If

thermostat telite does not come on, call service

agency or replace telite. (seee page 9.)

c. Check connection. Replace heating element.

(See page 10.)

a. To recalibrate follow Planned Maintenance Card

61.

c. Replace thermostat or heating element. (see

page 10.)

a. Plug the timer in.

c. Call service agency.

8

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