Wells MDW300 Service Manual

Modular Dry Well

Owner’s Manual

Models

MDW100, MDW200, MDW300, MDW400, MDW500

This manual includes material related to installation,
use , cleaning, and care. Exploded view[s], as well
as any available parts list[s] and wiring diagram[s]
pertaining to the unit[s] covered by this manual are
also included.

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, use, or maintenance of this equipment.

DO NOT DISCARD THIS MANUAL.

MDW100

2M-Z 21876 • Rev. - • 03.2017

LIMITED WARRANTY STATEMENT

Unless otherwise specifi ed, all commercial cooking equipment manufactured by Wells Manufacturing
is warrantied against defects in materials and workmanship for a period of one year from the date of
original installation or 18 months from the date of shipment from our factory, whichever comes fi rst,
and is for the benefi t of the original purchaser only. This warranty is the complete and only warranty,
expressed or implied in law, or in fact, including but not limited to, warranties of merchantability or
fi tness for any particular purpose, and/or for direct, indirect, or consequential damages in connection
with Wells products. This warranty is void if it is determined that, upon inspection by an authorized
service agency, the equipment has been modifi ed, misused, misapplied, improperly installed, or
damaged in transit or by fi re, fl ood or act of God. It also does not apply if the serial nameplate has
been removed, or if service is performed by unauthorized personnel. The prices charged by Wells
Manufacturing 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 Manufacturing
factory authorized service agency or one of its sub-service agencies. This service will be provided
on customer’s premises for non-portable models. Portable models [see list of portable models below]
must be taken or shipped to the closest authorized service agency, transportation charges prepaid,
for service. In addition to restrictions contained in this warranty, specifi c limitations are shown in the
Service Policy and Procedure Guide. Wells Manufacturing authorized service agencies are located
in principal cities. This warranty is valid in the United States and Canada and void elsewhere. Please
consult your telephone directory, your foodservice equipment dealer, or contact Wells Manufacturing
directly for information and other details concerning warranty.

PARTS WARRANTY

All genuine Wells replacement parts are warrantied for ninety [90] days from date of purchase on
non-warranty 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.

SERVICES AND EXPENSES NOT COVERED BY WARRANTY

• Travel time and mileage rendered beyond the 50-mile • Voltage conversions or gas conversions
radius limit • Pilot light adjustment

• Mileage and travel time on “portable” equipment • Miscellaneous adjustments
[see below] • Thermostat calibration and bypass adjustment

• Labor to replace such items that can be replaced easily • Resetting of circuit breakers, safety controls,
during a daily cleaning routine [e.g., removable kettles or reset buttons
on fryers, knobs, grease drawers on griddles, etc.] • Installation of equipment

• Replacement of normal wear items such as bulbs, • Cleaning of equipment
fuses, etc. • Seasoning of griddle plates

• Charges incurred by delays, waiting time, or operating • Repair of damage created during transit, delivery,
restriction that hinder the service technician’s ability or installation or created by an act of God
to perform service. Any overtime premium will be • All labor must be performed during regular working
charged to the buyer. hours.

PORTABLE EQUIPMENT

Wells will not honor service bills that include travel time and mileage charges for servicing any products
considered “portable” in nature. These products should be taken to the service agency for repair.

The foregoing warranty is in lieu of any and all other warranties expressed or implied and constitutes
the entire warranty.

Should you require any assistance regarding the operation or Business hours: 8:00 a.m. to 4:30 p.m.
maintenance of any Wells equipment; write, phone, fax or email Central Standard Time
our Service Department. In all correspondence mention the Telephone: [phone] Fax: [phone]
model number and the serial number of your unit, as well as Email: [e-mail]
the voltage or type of gas you are using. Website: www.wellsbloomfi eld.com

i

TABLE OF CONTENTS

Warranty i
Warnings, General Information and Installation 1–3
Wiring Diagrams 4–5
Daily Operation 6
Troubleshooting 6
Cleaning 7
Parts List 8–11
Exploded Views 12–16
Specifications 17
Installation Sheets 18–22
Wellslok Installation 23

2M-Z21876 Rev- Owner's Manual for MDW Modular Dry Well

NOTES

SAFETY SYMBOLS

These symbols are intended to alert the user to the
presence of important operating and maintenance
instructions in the manual accompanying the appliance.

THOROUGHLY INSPECT YOUR UNIT ON ARRIVAL

This unit has been tested for proper operation before leaving our plant to ensure delivery of your unit
in perfect condition. However, there are instances in which the unit may be damaged in transit. In the
event you discover any type of damage to your product upon receipt, you must immediately contact
the transportation company who delivered the item to you and initiate your claim with that company.
If this procedure is not followed, it may aff ect the warranty status of the unit. If damage or loss is not
apparent until after equipment is unpacked, a request for inspection of concealed damage must be
made with carrier within 15 days. Please record the model number, serial number, voltage, and purchase
date in the area below at the time of receipt..

Model Number

Serial Number

Voltage

Purchase Date

MAINTENANCE AND REPAIRS

Contact your local authorized service agent for service or required maintenance. Please have the
information in the above fi elds ready when you call to ensure a faster service.

Using any part other than genuine Wells factory supplied parts relieves the manufacturer of all liability.
Due to periodic changes in designs, methods, procedures, policies, and regulations, the specifi cations
contained in this document are subject to change without notice. Wells reserves the right to change
product specifi cations and design without notice. In regards to previously purchased equipment,
such revisions do not entitle the buyer to corresponding changes, improvements, additions or
replacements. While Wells Manufacturing exercises good faith eff orts to provide information that
is accurate, we are not responsible for errors or omissions in information provided or conclusions
reached as a result of using the specifi cations. By using the information provided, the user assumes
all risks in connection with such use. When performing maintenance, power to the unit should be
unplugged or turned off .

PLEASE REFER TO THE WARRANTY PAGE FOR SPECIFIC WARRANTY INFORMATION.

AUTHORIZED SERVICE AGENT LISTING

Reference the listing provided with the unit or for an updated listing go to the website or call customer
service to fi nd an agent.

Business hours: 8:00 a.m. to 4:30 p.m. Central Standard Time
Telephone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.wellsbloomfi eld.com

Please visit www.starwebconnect.com/manuals.aspx for digital versions of any documents associated
with this unit.

iii

SAFETY SYMBOLS

These symbols are intended to alert the user to the
presence of important operating and maintenance
instructions in the manual accompanying the appliance.

THOROUGHLY INSPECT YOUR UNIT ON ARRIVAL

This unit has been tested for proper operation before leaving our plant to ensure delivery of your unit
in perfect condition. However, there are instances in which the unit may be damaged in transit. In the
event you discover any type of damage to your product upon receipt, you must immediately contact
the transportation company who delivered the item to you and initiate your claim with that company.
If this procedure is not followed, it may aff ect the warranty status of the unit. If damage or loss is not
apparent until after equipment is unpacked, a request for inspection of concealed damage must be
made with carrier within 15 days. Please record the model number, serial number, voltage, and purchase
date in the area below at the time of receipt..

Model Number

Serial Number

Voltage

Purchase Date

MAINTENANCE AND REPAIRS

Contact your local authorized service agent for service or required maintenance. Please have the
information in the above fi elds ready when you call to ensure a faster service.

Using any part other than genuine Wells factory supplied parts relieves the manufacturer of all liability.
Due to periodic changes in designs, methods, procedures, policies, and regulations, the specifi cations
contained in this document are subject to change without notice. Wells reserves the right to change
product specifi cations and design without notice. In regards to previously purchased equipment,
such revisions do not entitle the buyer to corresponding changes, improvements, additions or
replacements. While Wells Manufacturing exercises good faith eff orts to provide information that
is accurate, we are not responsible for errors or omissions in information provided or conclusions
reached as a result of using the specifi cations. By using the information provided, the user assumes
all risks in connection with such use. When performing maintenance, power to the unit should be
unplugged or turned off .

PLEASE REFER TO THE WARRANTY PAGE FOR SPECIFIC WARRANTY INFORMATION.

AUTHORIZED SERVICE AGENT LISTING

Reference the listing provided with the unit or for an updated listing go to the website or call customer
service to fi nd an agent.

Business hours: 8:00 a.m. to 4:30 p.m. Central Standard Time
Telephone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.wellsbloomfi eld.com

Please visit www.starwebconnect.com/manuals.aspx for digital versions of any documents associated
with this unit.

2M-Z21001 Rev- Owner's Manual for IRCS4 Impingement/Radiant Split-Belt Conveyor Toaster

1

2M-Z21876 Rev- Owner’s Manual for MDW Modular Dry Well

CAUTION

Never fill the unit with water or allow the control[s], motor, or element[s] to come
in contact with liquid [other than as directed in the cleaning section of this manual].
Make certain while cleaning other units, as well as the floor and counters, that no
overspray reaches this unit from above or from below the counter’s surface.

Do not connect this appliance to power until all installation instructions are read,
understood, and followed. Damage to the unit, the counter, or users may result
if these instructions are not followed completely.

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 may result in severe
electrical shock.

Exposed surfaces can be hot to the touch and may cause burns.

Avoid storing flammable or combustible materials in, on, or near the unit.

For warmers installed in plastic counter tops, the counter material must be protected
from the heat of the warmer in order to prevent discoloration and/or deterioration.
Wellsloks are not suitable for this purpose. The installer should contact the manufacturer
or distributor of the countertop material for specific instructions.

Electrical installation other than as specified on the installation sheet will void the UL
certification listing and may void the warranty. The ground lug of this appliance must
be connected to a suitable building ground.

Always use a metal inset/food pan. Do not place food directly into the warmer.

INSTA L L ATION

YOU MUST CONSULT THE INSTALLATION SHEET FOR YOUR SPECIFIC MODEL FOR THE CORRECT
INSTALLATION INFORMATION REGARDING CUTOUTS, CLEARANCES, AND OTHER IMPORTANT
SPECIFICATIONS REGARDING SAFE AND RELIABLE OPERATION.
MDW100 installation sheet — 2M-Z20755
MDW200 installation sheet — 2M-Z20756
MDW300 installation sheet — 2M-Z20757
MDW400 installation sheet — 2M-Z20758
MDW500 installation sheet — 2M-Z20759

2

GENERAL SAFETY INFORMATION

This equipment is designed and sold for commercial use only, and is intended for use by personnel
trained and experienced in its operation. This is not sold for consumer use in and around the home
nor for use directly by the general public in food service locations. This appliance is intended to hold
pre-heated food for human consumption. No other use is recommended or authorized by the
manufacturer or its agents. 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.

Before using your new equipment, read and understand all the instructions and labels associated
with the unit prior to putting it into operation. Exposed surfaces of this appliance can be hot to the
touch and may cause burns. The presence of safety equipment and components cannot, in and
of themselves, assure absolute safety of operation. Diligent, capable, well-trained operators and
maintenance personnel, as well as proper programs of operation and maintenance, are essential
to the safe and reliable operation of this unit.

Wells manufacturing is not responsible for injury, damage, loss or other claim that may occur to person
or property from improper alteration, modification, addition, operation, maintenance or service, whether
it be mechanical, electrical, or otherwise, which may occur from such improper alteration, modification,
addition, operation, maintenance or service to this piece of equipment. Do not operate this appliance
if the control panel is damaged. Call your authorized Wells service agent for service. The technical
content of this manual is intended for use by qualified technical personnel only. Any procedure which
requires the use of tools must be performed by a qualified technician.

GENERAL INSTALLATION INFORMATION

Installation procedures must be performed by an authorized technician with full knowledge of all applicable
local codes. It is the responsibility of the installer to verify that the unit is installed in compliance with such
codes and with the specifications and installation instructions specified for the unit. This appliance conforms
to NSF standard 4 only if installed in accordance with the supplied installation instructions. Do not connect
or energize this appliance until all installation instructions are read and followed. Damage to the appliance
may result if these instructions are not followed. If operated improperly, damage to persons or property
may result. Before using the unit for the first time, ensure to clean the unit properly. If the control panel
is damaged, do not operate the unit and contact your authorized Wells service agent for assistance.

Refer to the installation sheet for your model for specific installation instructions related to cutout[s],
wiring, etc.

ELECTRICAL CONNECTION

Electrical installation must only be performed by a certified electrical technician. Refer to the product’s
nameplate, wiring diagram, and installation sheet for specific electrical information. Voltage and phase
must match the nameplate specifications for the unit. 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.

Make certain to disconnect the unit from the power source before installing or removing any parts.
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.

2M-Z21001 Rev- Owner's Manual for IRCS4 Impingement/Radiant Split-Belt Conveyor Toaster

3

2M-Z21876 Rev- Owner’s Manual for MDW Modular Dry Well

WIRING DIAGRAMS

MDW100

120 V and 208 V/240 V single phase

MDW200

208 V/240 V single phase

MDW300

208 V/240 V three phase

4

MDW400

208 V/240 V three phase

MDW500

208 V/240 V three phase

2M-Z21001 Rev- Owner's Manual for IRCS4 Impingement/Radiant Split-Belt Conveyor Toaster

5

2M-Z21876 Rev- Owner’s Manual for MDW Modular Dry Well