Wells Manufacturing HT200, HT227, HT300, HT327, HT400 Operation Manual

WELLS BLOOMFIELD, LLC

10 Sunnen Drive P.O.Box 430195

St. Louis, MO 63143 USA

telephone: [phone]

fax: [phone]

www.wellsbloomfield.com

021A

OWNERS MANUAL

BUILT-IN

BAIN MARIE

STYLE

HEATED TANKS

MODELS

HT200, 227
HT300, 327

Model HT300

HT400, 427
HT500, 527

Includes

INSTALLATION

USE & CARE

EXPLODED VIEW

PARTS LIST

WIRING DIAGRAM

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

p/n 2M-308085 Rev. (A) M021A 090424 rms

LIMITED WARRANTY STATEMENT

Unless otherwise specified, all commercial cooking
equipment manufactured by WELLS BLOOMFIELD, LLC is
warranted 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 first, and is for the benefit 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 FITNESS FOR ANY
PARTICULAR PURPOSE, AND/OR FOR DIRECT,
INDIRECT OR CONSEQUENTIAL DAMAGES IN
CONNECTION WITH WELLS BLOOMFIELD PRODUCTS.
This warranty is void if it is determined that, upon inspection
by an authorized service agency, 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
if service is performed by unauthorized personnel. The
prices charged by Wells Bloomfield 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 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 (a
device with a cord and plug) must be taken or shipped to
the closest authorized service agency, transportation
charges prepaid, for service. In addition to restrictions
contained in this warranty, specific limitations are shown in
the Service Policy and Procedure Guide. Wells Bloomfield
authorized service agencies are located in principal cities.
This warranty is valid in the United States and Canada and
void elsewhere. Please consult your classified telephone
directory, your foodservice equipment dealer or contact:

10 Sunnen Dr., P.O.Box 430129 St. Louis MO 63143 USA

phone [phone] or fax [phone]

for information and other details concerning warranty.

Wells Bloomfield, LLC

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.
Thos 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 fifty (50) 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.

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.

xi

TABLE OF CONTENTS

WARRANTY xi
SPECIFICATIONS 1
FEATURES & OPERATING CONTROLS 2
PRECAUTIONS & GENERAL INFORMATION 3
AGENCY LISTING INFORMATION 3
INSTALLATION 4
OPERATION 6
MAINTENANCE INSTRUCTIONS 7
CLEANING INSTRUCTIONS 8
TROUBLESHOOTING SUGGESTIONS 10
EXPLODED VIEW & PARTS LIST 12 - 21
WIRING DIAGRAM 22—25
PARTS & SERVICE 29
CUSTOMER SERVICE DATA 29

INTRODUCTION

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 which will ensure its optimum performance.

ELECTRICAL SPECIFICATIONS

MODEL VOLTS WATTS

208

HT200

HT227

HT300

HT327

HT400

HT427

M021A 2M-308085 Owners Manual for Built-In Bain Marie Warmers

HT500

HT527

240

208

240

208

240

208

240

208

240

208

240

208

240

208

240

1800

2400

2500

3300

2700

3600

3700

5000

3600

4800

5000

6600

4500

6000

6200

8300

AMPS PER LEG 3ø

L1 L2 L3

8.7

11.9

13.0

17.9

8.7

10.0

11.9

13.8

13.0

15.0

17.9

20.6

15.0

17.3

20.0

23.8

18.7

21.7

25.8

29.8

8.7

10.0

11.9

13.8

8.7

10.0

11.9

13.8

AMPS 1ø

10.0

13.8

15.0

20.6

17.3

20.0

23.8

27.5

21.7

25.0

29.8

34.4

1

FEATURES & OPERATING CONTROLS

WELLSLOKS

INDICATOR
LIGHT

TEMPERATURE
CONTROL
(THERMOSTAT)

A. THERMOSTAT

On THERMOSTATICALLY CONTROLLED heated tanks, power
is applied to the heating element according to the control knob
position and the actual temperature at the temperature sensing
thermobulb.

The desired temperature is controlled by rotating the
TEMPERATURE CONTROL KNOB. The knob has a numeric
scale, where higher numbers correspond to higher temperature.

The INDICATOR LIGHT will glow when the thermostat is calling
for heat (i.e. the element is energized).

The dial will rotate approximately 300º, and will reach a “stop” at
each end. The OFF position is marked.

The dial position is an indication of the temperature setting.
Actual temperature will vary depending upon type of product,
food consistency and other such variables.

B. WELLSLOKS

Built-in heated tanks are equipped with WELLSLOKS, uniquely
designed turnout tabs which help secure the tank flange to the
counter top.

(See Installation Instructions, supplied with the appliance, for
details.)

C. DRAIN VALVE

Built-in heated tanks are equipped with a 1" NPT drain and
1/4-turn valve. Valve lever "down" is open; "up" is closed.
Valve must be closed for operation.

M021A 2M-308085 Owners Manual for Built-In Bain Marie Warmers

2

PRECAUTIONS AND GENERAL INFORMATION

This appliance is intended for use in commercial establishments
only.

This appliance is intended
consumption. No other use is
manufacturer or its 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.

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.

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. 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.

to hold pre-heated food for human

recommended or authorized by the

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

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.

DAMAGE

CAUTION:

HOT SURFACE

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

Refer to the product nameplate for the specific appliance for agency
listings. In general:

This appliance conforms to NSF Standard 4 for sanitation only if
installed in accordance with the supplied Installation Instructions.

UL Listed warmers are

M021A 2M-308085 Owners Manual for Built-In Bain Marie Warmers

U Listed under UL File E6070.

3

AGENCY LISTING INFORMATION

STD 4

E6070

UL Listed Warmers

INSTALLATION

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.

CAUTION

FIRE HAZARD

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

IMPORTANT: 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.

IMPORTANT: Wellslok
Extension Kits must be used
ONLY with UL Listed
warmers approved for
installation in wood counter
tops. Refer to the Installation
Instructions provided with the
warmer.

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
WARMER w/ CONTROL PANEL
1" NPT VALVE

PREPARATION

Refer to the Installation Instruction Sheet for cutout dimensions and
required clearances. Maintain required clearances between the
appliance and adjacent combustible surfaces.

INSTALLATION

1. This is a GENERAL GUIDE. For specific cutout dimensions and
other installation details, refer to the Installation Instructions
supplied with the warmer.

2. Cutout dimensions for tank units and control panels are listed on
the Installation Instructions provided with the warmer. Verify style
of control panel (e.g square, rectangular) before making cutout.

NOTE: Cutout dimensions are different for square and rectangular
control panels; and, for wood and metal counters.
Verify the dimensions are correct for the installation before making the
cutout.

M021A 2M-308085 Owners Manual for Built-In Bain Marie Warmers

4

3. For “top-mounted” installation:

a. Verify that provided sealants are applied to the underside of
the warmer top flange prior to setting the unit into the cutout.
b. After installation, verify that the tabs on the Wellsloks are
turned out to lock the warmer into the counter.
c. Apply a thin bead of food-grade silicone sealant around the
flange to seal it to the counter.
d. Wellslok extension kits are available for installing warmers in
counter tops where the standard Wellslok would not normally
reach. The extension kit will adapt to counter tops up to
1¾” thick.
e. For heated tanks installed in plastic (e.g. Corian®) 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 installation instructions.

D. ELECTRICAL INSTALLATION

1. Refer to the nameplate. Verify the electrical service power.
Voltage and phase must match the nameplate specifications.
Wiring the warmer to the wrong voltage can severely damage the
unit or cause noticeably decreased performance.

2. Available electrical service amperage must meet or exceed the
specifications listed on the provided specification sheet .

3. Warmer and control unit must be connected to an appropriate
building ground. Ground connection will be marked “GND” or “ ” .

E. PLUMBING INSTALLATION

For use in the State of Massachusetts, this appliance must be
installed in compliance with Massachusetts Fuel Gas and

Plumbing Code CMR 248.

1. IMPORTANT:
All plumbing installations must be performed by a qualified
plumber.

2. Some jurisdictions may require an approved back-flow preventer
in the drain line. It is the responsibility of the plumber to determine
such requirement, to provide the proper back-flow prevention
device, and to properly install the required back-flow preventer.

INSTALLATION

NOTE: Damage caused by

leaks due to improper
installation is NOT covered by
warranty.

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: Electrical
installation other than as
specified on the specification
sheet will void the UL listing,
and may void the warranty.

NOTE: Plumb connections
must be made in compliance
with all Federal, State and
Local Plumbing Codes and
Ordinances.

M021A 2M-308085 Owners Manual for Built-In Bain Marie Warmers

5

OPERATION

CAUTION:

HOT SURFACE

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

CAUTION:

SHOCK HAZARD

DO NOT splash or pour water
onto control panel or wiring.

Always use an inset.
DO NOT place food directly
into the warmer.

Always pour hot water into the
warmer before it is
preheated. DO NOT pour
water into a dry, heated
warmer. This may damage
the unit.

DO NOT put ice into a
warmer pan. This will cause
condensation on the inside of
the warmer. Damage caused
by condensation is NOT
covered by warranty.

Stir thick food items frequently
to keep food heated uniformly.

Keep insets covered to
maintain food quality and
temperature.

A. WET OPERATION

Make sure the drain valve is fully closed before turning thermostat ON.

Add approximately 1” of hot tap water before turning the warmer ON.
Use of hot water will allow a faster preheat.

1. For non-autofill units: check the water level frequently and
add hot water as necessary to prevent the tank from running
dry. Do not add water to the tank if it has run dry.

2. If your Bain Marie runs dry, turn it OFF and allow to cool to
room temperature before adding water.

B. PRE-HEATING THE BAIN MARIE

Make sure the drain valve is fully closed before filling tank.

Turn temperature control to HI or highest temperature setting.

Allow tank to preheat for approximately 30 minutes, then set the control
for the desired temperature.

C. OPERATION

Check water level frequently during use. Autofill units should be
checked periodically to verify proper operation of the autofill feature.

Running warmers dry will lower the temperature of the food, and will
damage the tank.

DO: Always use pot or inset.
DO NOT place food directly into the tank.

DO: Always pour hot water into the warmer before it is preheated.
DO NOT pour water of any temperature into a dry, heated tank.
This will damage the unit.

DO NOT put ice into the tank. This will cause condensation on the
inside of the tank shrouds. Damage caused by condensation is
NOT covered by warranty.

DO: Stir thick food items frequently to keep food heated uniformly.

DO: Keep pots and insets covered to maintain food quality and

temperature.

DO NOT use metal implements, steel wool, or caustic or abrasive
cleansers to clean warmer pan.

M021A 2M-308085 Owners Manual for Built-In Bain Marie Warmers

6

MAINTENANCE INSTRUCTIONS

CARE OF STAINLESS STEEL

Stainless steel is a marvelous material: strong, lustrous and low maintenance. With a
minimum of care, it will normally retain its beauty and durability for the life of the
equipment. In some applications, however, special care is required in order to maintain
stainless steel’s special properties.

External components, such as cabinets and control panels, are finished with a grain
pattern. This pleasing finish is best maintained by cleaning with a non-abrasive
cleanser applied with a soft cloth. Rub only in the direction of the grain. In the absence
of visible grain, rub only along the longest axis of the appliance.

Restore stainless steel’s luster by applying a polish specifically made for stainless steel.
Spray on, wipe off with a soft cloth, rubbing in the direction of the grain.

Never use metal implements, wire brushes, abrasive scratch pads or steel
wool to clean stainless steel.

Warmer pans, insets and other vessels are subject to a harsher environment. Wells
Manufacturing uses an very high quality stainless steel (#304DDQ) for our food warmer
pans. Even the highest quality stainless steel, however, is mostly iron, and will rust, pit
and corrode under the following conditions:

• Poor Water Quality: Hard water (water with a high content of dissolved minerals)

will leave mineral deposits when allowed to dry. Calcium (lime) can buildup on
heated surfaces, even under water. If left unattended, hard water spots and lime
buildup can lead to rusting, corrosion and pitting.

• Contact with Chlorides: Chlorides (specific compounds of chlorine) are found in

food, table salt and many cleansers. Chlorides can attack the surface of stainless
steel, resulting in corrosion and pitting.

Keep your stainless steel warmers clean and free from calcium buildup.
Use alkaline, alkaline chlorinated or non-chloride cleanser.
Use citric acid-based cleaners to remove calcium deposits.

For additional information, please read the NAFEM Stainless Steel Equipment and
Cleaning Guide. Contact NAFEM at :
North American Association of Food Equipment Manufacturers
401 N. Michigan Avenue
Chicago, Illinois 60611-4267
[phone]

M021A 2M-308085 Owners Manual for Built-In Bain Marie Warmers

7

CLEANING INSTRUCTIONS

CAUTION:

SHOCK HAZARD

Do NOT splash or pour water
into or over any control panel
or wiring.

CAUTION:

SHOCK HAZARD

Disconnect warmer from
electric power before cleaning

CAUTION:

BURN HAZARD

Allow warmer to cool
completely before cleaning.

DAILY CLEANING INSTRUCTIONS

PREPARATIONS: Turn control knob to OFF. Unplug the warmer.

Allow warmer to cool before proceeding.
Remove any insets, pans and/or adapter tops ( if
used). Drain water from tank.

FREQUENCY: Minimum - daily.

TOOLS: Mild Detergent

Solution: 10 Parts Warm Water to 4 Parts Vinegar
Plastic Scouring Pad
Clean Cloth or Sponge

1. Wipe entire unit down using a clean cloth or sponge and mild
detergent.

2. Use a plastic scouring pad to remove any hardened food particles
or mineral deposits. IMPORTANT: DO NOT use steel wool for
cleaning.

3. Rinse warmer thoroughly with a vinegar and water solution to
neutralize all detergent cleanser residue.

4. Inspect warmer tank for damage. Damage to the tank may allow
grease and water to leak into insulation and heating element,
causing a potential fire and/or electric shock hazard. Contact your
Authorized Wells Service Agency to inspect warmer if water or
grease contamination is suspected.

5. Add proper amount of warm water. Turn control knob ON and
check for proper operation.

M021A 2M-308085 Owners Manual for Built-In Bain Marie Warmers

8