Place this chapter in the Marinators section of the
Equipment Manual.
MANUFACTURED EXCLUSIVELY
FOR McDonalds ®
BY
WELLS MANUFACTURING
2 ERIK CIRCLE VERDI, NEVADA 89439
PHONE: 1 (702) 345-0444 TOLL FREE: 1 (800) 777-0450
FAX: 1 (702) 345-0569 FAX: 1 (800) 356-5142 (For orders only)
TABLE OF CONTENTS
WARRANTY....................................................................................................................................Page 2
INTRODUCTION ..............................................................................................................................Page 2
SAFETY...........................................................................................................................................Page 2
PARTS IDENTIFICATION/PHOTO/FUNCTION..................................................................................Page 3
EQUIPMENT SET-UP AND CLOSE PROCEDURES..........................................................................Page 7
TROUBLESHOOTING GUIDE ..........................................................................................................Page 7
ORDERING/SERVICE INFORMATION..............................................................................................Page 9
NON-SCHEDULED MAINTENANCE.................................................................................................Page 9
WIRING DIAGRAM......................................................................................................................... Page 12
WIRING PICTORIAL....................................................................................................................... Page 13
This manual is for the exclusive use of licensees and employees of McDonald's Systems, Inc.
MARINATOR
WELLS MODEL MDMW-10
©1992 McDonald's Corporation
All Rights Reserved
Printed in January
EM M4
Printed In
The United States of America
MARINATOR WARMER
Model MDMW-10
PRODUCT FEATURES
• Thermostatically controlled to maintain precise temperature.
. "POWER ON" indicator light and "HEATER ON"
indicator light.
• Convenience outlet and mounting bracket for product timer. Timer
bracket can be mounted on the side or rear of the marinator.
• Low water sensor and alarm buzzer.
• Three 6" deep stainless steel pans and lids are standard. 6" deep
microwave approved plastic pans and lids are optional.
• Available with pin-and-sleeve electrical connection for overhead
power supplies or twist lock plugs.
DIMENSIONS
INSTALLED SHIPPING
DIMENSIONS DIMENSIONS
MODEL
W D H H'
WEIGHT
W D H
WEIGHT
MDMW-
10
23
1/6"
17
3/8"
9
1/2"
18"
35 28" 22" 14" 46
Including timer bracket
ELECTRICAL INFORMATION
Voltage: 120V single phase.
Power: 1. 5 KW, 12. 5 amps, plus convenience outlet.
Power Supply Cord: 6' in length with either L5-20P twist lock
plug or Hubbel 320 P4W pin-and-sleeve.
PRODUCT FINISH
All stainless steel construction.
PRODUCT WARRANTY
The Marinator Warmers manufactured by Wells 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. 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.
MCDonaldS
MARINATOR WARMER
Model MDMW-10
POWER SUPPLY CORD
PLUG CONFIGURATION
WATTS VOLTS NOM. AMPS
AMPS
CIRCUIT BREAKER
1500 120 12, 5 20. 0
Wells Manufacturing Company
2 Erik Circle, P. O. Box 280 • Verdi, NV 89439 (702) 345-0444
• FAX: 702-345-0569 TOLL-FREE FAX: 800-356-5142, for orders only
©1994 Wells Manufacturing Company Printed in U. S. A. Item No. 47137
ELECTRICAL SPECIFICATIONS
HUBBEL 320P4W
(MDMW-3)
NEMA L5
-
20P
(MDMW-2)
WEIGHT (LB.)
UNIT SHIPPING
35 46
WARRANTY STATEMENT
This MDMW-10 Marinator manufactured by Wells is
warranted to be free from defects in materials and
workmanship for a period of 1 year from the date of
original installation and is for the benefit of the
original purchaser only, BUT IS NOT AGAINST
DAMAGE CAUSED BY ABUSE, FAULTY
INSTALLATION, INCLUDING IMPROPER
ELECTRICAL CURRENT. 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
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 premises.
Please contact the Service Department: Wells
Manufacturing Company, P. O. Box 280, Verdi,
Nevada 89439; to arrange service or for additional
information and other details concerning the product
and/or this warranty.
INTRODUCTION
This commercial countertop Marinator Model
MDMW-10 is designed to hold food at desired
serving temperature. For the best results, the
MDMW-10 Marinator must be operated with water in
the pan as described in the operating procedure.
Wet operation distributes heat evenly to the food
which is placed in the 3 pans provided.
NOTE: While unit is in operation, all 3 pans must
stay in unit even if pans are empty to ensure
temperature integrity of products.
Knowledge of proper installation, operation and
maintenance procedures is essential to ensure
safe operation of any equipment. The following
guidelines should be kept in mind:
1. Use dry hands to turn power switch ON or OFF.
2. Turn OFF power switch when the marina-tor is
not in use.
3. If an electric shock is felt when touching the
marinator, disconnect immediately. Call Wells'
Service Department for assistance and service.
4. Have electrical supply outlet installed by a
licensed electrician. Insure that equipment is
properly grounded.
5. If you find that the electrical cord is frayed, DO
NOT PLUG IT INTO A POWER RECEPTACLE.
If already plugged in, disconnect the plug after
shutting OFF the circuit breaker.
6. Disconnect the power cord before attempting
any repairs and/or cleaning of the unit.
7. Allow unit to cool before cleaning.
8. Do not splash water onto the unit. Wet elec-
trical components and wiring present a high
shock hazard.
9. Do not remove scale build-up from pan with a
sharp knife — follow cleaning procedure
described on the MRC 61.
Hazard Communication Standard (HCS) — The
Procedure(s) in this chapter include the use of
chemical products. These chemical products
will be highlighted with bold face letters
followed by the abbreviation (HCS). See the
Hazard Communication Standard (HCS) Manual
for the appropriate Material Safety Data
Sheet(s) (MSDS).
SAFETY
PARTS IDENTIFICATION/FUNCTION/PHOTOS
ITEM PART NO.
DESCRIPTION QTY.
FUNCTION
1 21702 1/3 Size Pan 3 Pan to hold food.
2 21701 Lids - Slotted 3 Lids to cover pan.
3 21658 Timer Bracket 1 To mount the countdown timer.
4
21667
Cord Set - Pin & Sleeve
1
* 21741 Cord Set - Twist Lock 1
Protective wire set to connect appliance to
electrical supply system and to ground the unit.
5 21742 Optional Perforated Insert 1 To provide circulation around product.
* 21743 Optional Divider 1 To separate product.
* 21744 Optional Cambro Pan 3 Q-ing oven.
* 21745 Optional Cambro Lid 3 Q-ing oven.
* Not Shown
ITEM PART NO.
DESCRIPTION QTY. FUNCTION
6 50330 Power Switch 1 Turns electric power ON or OFF to the marinator.
7 51157 RED Power ON Indicator Light 1 Indicates power is ON.
8 — Specification Plate 1
Indicates model number, serial number and electrical
rating of the marinator.
9 60590 Convenience Outlet 1 120V, 4 Amp, 500 Watt outlet for timer.
10 60588 Thermostat Knob 1 To manually set temperature of water in the pan.
11 60587 Calibration Plate 1
Permits calibration to the indicator point of the
thermostat knob. Inscribed with temperature scales
of 140°F to 200°F (60 °C to 93 °C).
12 60563 WHITE Thermostat Indicator Light 1
Cycles ON/OFF with thermostat. Indicates the
marinator is calling for heat when light is ON.
Marinator has reached set temperature when light is
OFF.
13 66618 Control Panel 1 Used to mount electrical components.
14 66670 Shell 1 Encloses all electrical components and water pan.
15* 66610 Water Pan with Water Level Markings 1 Pan used to hold heated water and 1/3 size pans.
16 66621 Bottom Cover Panel 1 Panel to cover electrical components at the bottom.
17 60564 Feet 4
Non-skid and raises marinator off table for proper air
circulation.
18 60892 Thermostat 1 Controls water pan temperature.
19 66604 Low Water Alarm Control 1 Turns ON low water alarm.
20 65943 Low Water Alarm 1 Indicates low water in pan.
* Not Shown
4
ITEM PART NO.
DESCRIPTION QTY. FUNCTION
21 66613 Fiberglass Insulation (Sides) 1
* 22 66075 Insulation - Bottom 1
Insulation to prevent heat dissipation through
sides and bottom.
23 65812 Thermostat Clamp Plate 1 Clamps thermostat bulb to the water pan.
24 66603 Heating Element 1 Heat source for marinator.
* 25 66622 Wiring Harness 1
Electrical distribution system for electrical
components.
26 66514 Low Water Probe 1 Senses water for low water control.
27 65741 Insulation Cover 1
Supports element, and radiates heat into water
pan.
* Not Shown
HARDWARE IDENTIFICATION
ITEM PART NO. DESCRIPTION
A 55487 8-32 x 5/16" (8 mm) Phillips Truss Head Machine Screw
B 57567 8 x 3/8" (10 mm) Phillips Truss Head Sheetmetal Screw
C 51715 8-32 x 3/8" (10 mm) Slotted Round Head Machine Screw
D 65810 6-32 x 3/8" (10 mm) Phillips Truss Head Machine Screw
E 51053 8-32 Nut with Built-in Lockwasher (keps)
F
50397
Heating Element Mounting Clip
G 60670 1/4-20 x 3/8" (10 mm) Phillips Truss Head Machine Screw
EQUIPMENT 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.
NOTE: Melted ice is the purest water available in
the restaurant. After cleaning, fill the water pan with
ice to allow it to melt before next use.
thermostat dial to the correct
4. Install all 3 pans.
5. Cover the pans with lids. Place the power switch
in the ON position. The red indicator light will
come ON.
6. 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 mari-
nator 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 pans.
4. Remove the timer mounting bracket.
5. Empty the water from the water pan.
6. Using a clean, damp cloth towel, wipe the water
pan.
7. Using a hot solution of McD All Purpose
Concentrate (APC) (HCS) from the sink
proportioner and a warm solution of McD
Sanitizer (HCS), wash and sanitize all lids and
pans and set aside to air dry overnight.
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 mal-
function.
It is easy to define the malfunction, but sometimes
very difficult to identify the cause.
If the problem remains after following the
suggestions listed, contact your service rep-
resentative.
3.
Turn the
setting.
TROUBLESHOOTING GUIDE
WARNING: Inspection, testing and repair of
electrical equipment should be performed by
qualified service personnel. The unit should be
unplugged when servicing, except when
electrical tests are required.
DANGER: Use extreme care during electrical
circuit tests. Live circuits will be exposed.
PROBLEM PROBABLE CAUSE CORRECTIVE ACTION
Power switch not turned ON. Turn switch ON.
Restaurant circuit breaker OFF. Reset circuit breaker.
Marinator not plugged into electrical outlet. Plug in marinator.
Power switch defective. Replace power switch.
Power supply cord, plug or restaurant
receptacle defective.
Replace power supply cord or plug. Have
electrician check restaurant receptacle.
Marinator does not heat.
Low water sensor failure. Have sensor replaced.
Power supply problem. See above. RED indicator light does
not turn ON.
Defective indicator light. Replace indicator light.
Pans floating in water. Too much water in water pan. Carefully scoop excess water from water
pan. CAUTION: Water is hot if marinator
has been on.
Water scale build-up in pan. Follow cleaning and de-liming procedure
on MRC 61.
Defective low water control. Replace low water control.
Low water alarm does not
work.
Defective low water alarm. Replace low water alarm.
Power switch is ON but
cycling WHITE thermostat
indicator light is not ON.
Thermostat is set too low, or indicator light
is defective.
Rotate thermostat knob to higher setting. If
indicator light does not turn ON replace
light or replace thermostat.
Power switch is ON but no
heat and no WHITE
indicator light.
Defective thermostat. Replace thermostat.
Power switch is ON,
WHITE indicator light is
ON - no heat.
Defective wiring or heating element. Check wiring - replace wiring if necessary.
Thermostat out of calibration. Recalibrate per MRC 61. Water boils at 180°F (82
°C) setting.
Defective thermostat. Replace thermostat.
All pans are not in place. Place pans in marinator.
Thermostat out of calibration. Recalibrate per MRC 61.
WHITE indicator light ON -
water temperature does
not reach 180°F (82 °C).
Defective heating element or thermostat. Replace as necessary.
PARTS ORDERING/SERVICE INFORMATION
If service parts or technical information is required,
please contact the Factory Service Department. To
help speed up your inquiry the following information
is required:
1. Model Number: MDMW-10
2. Serial Number:
(Fill in for your records)
3. Voltage: 120V
4. Item Part Number:
5. Quantity Required:
6. Nature of service problem and symptoms.
NON-SCHEDULED MAINTENANCE
Under normal conditions with proper use and
cleaning, very little non-scheduled maintenance will
be required for this unit. However, this section
provides procedures for checking and replacement
of the various parts used within the marinator.
Before replacement of any parts, refer to the
Troubleshooting section for assistance in
determining the cause of any malfunction.
WARNING — Some of the procedures con-
tained in this section involve accessing bare
electrical terminals and exposure to voltages
capable of producing fatal shock; therefore,
they must be done by properly trained per-
sonnel. Proper safety rules for electrical equip-
ment must be followed.
Before performing any maintenance on your Wells
Marinator:
1. Place the power switch in the OFF position.
2. Unplug the cord.
WARNING: Failure to do so may result in elec-
trical shock.
3. Let the marinator and water cool.
4. Perform CLOSE procedure. (See Page 7)
5. Place the marinator bottom side up.
6. Unscrew and remove the bottom cover. (See
Figure 1)
Figure 1
7. Refer to wiring pictorial (page 12) for wiring
assistance.
Note: Loctite #242 (Purple) should be applied to all
threaded parts before reassembly, except for
electrical connections.
REPLACE INDICATOR LIGHT
(WHITE OR RED)
Tools: #2 Phillips Screwdriver, Needle Nose Pliers
Parts: Indicator Light (White or Red) Part Number
60563 (white) or 51157 (red)
1. Turn OFF and unplug marinator.
WARNING: Failure to do so will result in elec-
trical shock.
2. Pull the wires with spade terminals off the
indicator light.
3. Squeeze the 2 ears on the plastic body of the
indicator light and force it out the front of the
control panel.
4. Follow reverse procedure to install a new
indicator light.
REPLACE THE HEATING ELEMENT PAN SUB-
ASSEMBLY
Tools: #2 Phillips Screwdriver, 11/32" (9 mm) Nut
Driver
Parts: Heating Element Pan Sub-Assembly
Consisting of Part Number 65741 Heating
Element Pan, and Clip Assembly and 66603
Heating Element
1. Turn OFF and unplug marinator.
WARNING: Failure to do so will result in elec-
trical shock.
2. Remove the insulation cover.
3. Remove the bottom piece of insulation.
4. Remove the 2 insulation retainers and nuts
holding the pan. (See Figure 2)
Figure 2
5. Remove the heating element pan from the 2
studs.
6. Unscrew the heating element wire terminals.
7. Follow reverse procedure to replace the heating
element pan assembly.
REPLACE THE THERMOSTAT
Tools: #2 Phillips Screwdriver, 1/4" (6 mm)
Flatblade Screwdriver, 11/32" (9 mm) Nut
Driver
Parts: Thermostat (Part Number 60892)
1. Turn OFF and unplug marinator.
WARNING: Failure to do so will result in elec-
trical shock.
2. Remove heating element pan assembly. (See
Figure 3)
Figure 3
3. Unscrew 2 nuts and loosen or remove the
thermostat bulb clamp.
4. Slide thermostat bulb out.
5. Remove the thermostat knob and unscrew the 2
screws mounting the thermostat to the control
panel.
6. Unscrew the wire terminals to the thermostat
and remove wires.
7. Remove the thermostat.
8. Follow the reverse procedure for installing a
new thermostat.
Note: After installing a new thermostat check
thermostat calibration according to MRC 61.
10
WATTS VOLTS AMPS
1500 120 12. 5
PLUS CONVENIENCE OUTLET
/