Wells SS4 Series User manual

WELLS MANUFACTURING
265 Hobson Street, Smithville, Tennessee 37166
telephone: [phone]
fax: [phone]
www.wells-mfg.com
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.
OWNERS MANUAL
BUILT-IN ROUND WELL
WARMERS
(Insulated & Non-Insulated)
with
THERMOSTAT
CONTROL
MODELS
SS4ULT, ULTD
SS8T, TU TD, TD6
SS8ULT, ULTD
SS10T, TD
SS10ULT, ULTD
(Auto-Fill)
SS8TDUIAF, CIAF
SS10TDUIAF, CIAF
Includes
INSTALLATION
USE & CARE
EXPLODED VIEW
PARTS LIST
WIRING DIAGRAM
011D
2M-Z17558 Rev. C03/18
SS10ULT

WARRANTY EXCLUSIONS
THE FOLLOWING WILL NOT BE COVERED UNDER WARRANTY.
•Any product which has not been installed, cleaned, maintained,
or used in accordance with the directions published in the appropriate
installation sheet and/or owner’s manual as well as national and local
codes, including incorrect gas or electrical connection. Wells is not liable
for any unit which has been mishandled, abused, misapplied, subjected
to chlorides, harsh chemicals, or caustic cleaners, damaged from
exposure to hard water, modified by unauthorized personnel, damaged
by flood, fire, or other acts of nature [or God], or which have an altered
or missing serial number.
•Installation, labor, and job checkouts, calibration of heat controls, air
and gas burner/bypass/pilot adjustments, gas or electrical system
checks, voltage and phase conversions, cleaning of equipment,
or seasoning of griddle surface.
•Replacement of fuses or resetting of circuit breakers, safety controls,
or reset buttons.
•Replacement of broken or damaged glass components, quartz heating
elements, and light bulbs.
•Labor charges for all removable parts in gas charbroilers and hotplates,
including but not limited to burners, grates, and radiants.
•Any labor charges incurred by delays, waiting time, or operating
restrictions that hinder a service technician’s ability to perform service.
•Parts that fail or are damaged due to normal wear or labor for
replacement of Items that can easily be replaced during a daily cleaning
routine. such as but not limited to silicone belts, PTFE non-stick sheets,
knobs, control labels, bulbs, fuses, quartz heating elements, baskets,
racks, and grease drawers.
•Components that should be replaced when damaged or worn, but have
been field-repaired instead [eg. field-welded fry pots].
•Any loss of business or profits.
ADDITIONAL WARRANTIES
Specialty/chain specific versions may also have additional and/or
extended warranties.
LIMITED EQUIPMENT WARRANTY
Wells Manufacturing warranties new products to be free from defects
in material and/or workmanship for a period of one [1] year from the
date of original installation, except as noted below. Defects that occur
as a result of normal use, within the time period and limitations defined
in this warranty, will at Wells’ discretion have the parts replaced or
repaired by Wells or a Wells-authorized service agency.
THIS WARRANTY IS SUBJECT TO ALL LISTED CONDITIONS.
Repairs performed under this warranty are to be performed by a Wells-
authorized service agency. Wells will not be responsible for charges
incurred or service performed by non-authorized repair agencies.
In all cases, the nearest Wells-authorized service agency must be used.
Wells will be responsible for normal labor charges incurred in the repair
or replacement of a warrantied product within 50 miles (80.5 km) of
an authorized service agency. Time and expense charges for anything
beyond that distance will be the responsibility of the owner. All labor
will need to be performed during regular service hours. Any overtime
premium will be charged to the owner. For all shipments outside the
U.S.A. and Canada, please see the International Warranty for specific
details.
It is the responsibility of the owner to inspect and report any shipping
damage claims, hidden or otherwise, promptly following delivery.
No mileage or travel charges will be honored on any equipment that is
deemed portable. In general, equipment with a cord and plug weighing
less than 50 lb. (22.7 kg) is considered portable and should be taken or
shipped to the closest authorized service agency, transportation prepaid .
CONTACT
Should you require any assistance regarding the operation or
maintenance of any Wells equipment; write, phone, fax or email
our service department. In all correspondence mention the
model number and the serial number of your unit, as well as
the voltage or type of gas you are using.
Business hours are 8:00 a.m. to 4:30 p.m. Central Standard Time
Telephone [phone]
Fax [phone]
Email [e-mail]
www.wells-mfg.com
PRODUCTS PARTS LABOR
universal ventless hoods 2 years 1 year
canopy hoods 2 years 1 year
“Cook’n Hold” equipment [HW10,
HWSMP, LLSC7, LLSC7WA, LLSC11,
and LLSC11WA]
2 years 1 year
cast iron grates, burners, and burner
shields 1 year
original Wells parts sold to repair
Wells equipment 90 days
Service First 1 year
The foregoing warranty is in lieu of any and all other warranties expressed or implied and constitutes the entire warranty. 2M-Z22393 • Rev A • 02.2018

M011D.01 2M-Z17558 Owners Manual for Built-In Round T’Stat Warmers
3
WARRANTY
FEATURES & OPERATING CONTROLS 2
PRECAUTIONS & GENERAL INFORMATION 3
AGENCY LISTING INFORMATION 3
INSTALLATION 4
OPERATION 7-8
MAINTENANCE INSTRUCTIONS 9
CLEANING INSTRUCTIONS 10-11
TROUBLESHOOTING SUGGESTIONS 12
WIRING DIAGRAM 12-13
EXPLODED VIEW & PARTS LIST
Non Auto-Fill Units 14
Auto-Fill Units 19
ACCESSORIES LIST 23
CUSTOMER SERVICE DATA 23
Thank You for purchasing this Wells 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.
TABLE OF CONTENTS
INTRODUCTION
SPECIFICATIONS
MODEL VOLTS AMPS WATTS POWER SUPPLY CORD
SS4T, TD, ULT, ULTD 120 VAC 1ø 6.9A 825W
NOT SUPPLIEDSS8T, TD, ULT, ULTD 208 VAC 1ø 3.0A 620W
SS10T, TD, ULT, ULTD 240 VAC 1ø 3.4A 825W

M011D.01 2M-Z17558 Owners Manual for Built-In Round T’Stat Warmers
4
FEATURES & OPERATING CONTROLS
A. THERMOSTAT
1. On THERMOSTATICALLY CONTROLLED warmers, power is applied
to the heating element according to the control knob position and the
actual temperature at the temperature sensing thermobulb.
2. The desired temperature is controlled by rotating the TEMPERATURE
CONTROL KNOB. The knob has a numeric scale, where higher
numbers correspond to higher temperature.
3. On warmers equipped with an INDICATOR LIGHT, the light will glow
when the thermostat is calling for heat
(i.e. the element is energized).
4. The TEMPERATURE CONTROL KNOB will rotate approximately 300º,
and will reach a “stop” at both ends. The OFF position is marked.
NOTE: The dial position is an indication of the temperature
setting. Actual temperature will vary depending upon the type of
product and food consistency.
B. MOUNTING
1. Top-mounted built-in warmers are be equipped with WELLSLOKS,
uniquely designed turnout tabs which help secure the warmer top
ange to the countertop.
2. See the Installation Instructions, supplied with the particular appliance,
for details.
C. DRAINS
1. Models with a “D” (e.g. SS10TD) have drains for each well, with
each well having an individual drain valve.
2. Models that have the individual drain lines manifolded together
(custom installation), with a single drain valve for the entire
manifold.
D. AUTOFILL
1. On AUTOFILL units, water level is automatically fed into the
“master” pan whenever that pan’s thermostat is ON.
2. Water level is sensed by a WATER LEVEL PROBE.
INDICATOR
LIGHT
TEMPERATURE
CONTROL
KNOB
IL2468
IL2469
WELLSLOKS
W
a
t
e
r
L
e
v
e
l
WATER LEVEL
SENSOR
IL2694
IL2694

M011D.01 2M-Z17558 Owners Manual for Built-In Round T’Stat Warmers
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PRECAUTIONS AND GENERAL INFORMATION
E6070
AGENCY LISTING INFORMATION
Refer to the product nameplate for the specic 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 UListed under UL File E6070.
Underwriters Laboratory recognized ( ) warmers (UL File E6070) -
Since the warmer is only a single component of a complete installation,
the nished installation of an unit requires additional evaluations to
Underwriters Laboratory standards.
STD 4
UL Listed Warmers
UL Recognized Warmers
E6070
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
DAMAGE
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.
CAUTION:
HOT SURFACE
Exposed surfaces can be hot
to the touch and may cause
burns.
This appliance is intended for use in commercial establishments only.
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.
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 qualied technical personnel.
Any procedure which requires the use of tools must be performed by a
qualied 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.

M011D.01 2M-Z17558 Owners Manual for Built-In Round T’Stat Warmers
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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 qualied
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 ammable 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
specic 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 lm, 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.
INSTALLATION NOTES
1. Installation and start up of built-in warmers MUST be performed
by an authorized installation company.
2. It is the RESPONSIBILITY OF THE INSTALLER to verify that
this warmer installation is in compliance with the specications
listed in this manual and on the specication sheet provided.
3. It is the RESPONSIBILITY OF THE INSTALLER to check with
the AUTHORITY HAVING JURISDICTION, in order to verify
that this warmer installation is in compliance with local code
requirements.
4. Water supply and drain installation must meet all applicable
local, state and federal plumbing codes and ordinances.
5. Refer to Installation Instructions included with the warmer for
Underwriters Laboratories conditions of acceptability, electrical
requirements and other installation concerns.
BUILT-IN WARMERS
1. This is a GENERAL GUIDE. For specic cutout dimensions
and other installation details, refer to the Installation Instructions
supplied with the warmer.
2. Cutout dimensions for warmer units and control panels are
listed on the Installation Instructions provided with the warmer.
3. Verify style of control panel (e.g oval, rectangular) before
making cutout.
4. Units that are being connected by a manifold system, all units MUST
be installed on a level surface and with each other. If the units are
being installed on a mobile cart, the cart MUST be positioned on a
level surface when put in use.
NOTE: Cutout dimensions are different for insulated and non-insulated
units, control panels, for UL LISTED units and UL Recognized units,
and for wood and metal counters. Verify the dimensions are correct for
the installation before making the cutout. Specic cutout specications
are list on the installation sheet included with the unit.
INSTALLATION

M011D.01 2M-Z17558 Owners Manual for Built-In Round T’Stat Warmers
7
INSTALLATION continued
4. For “top-mounted” warmers (i.e. warmers mounted from above the
counter top):
a. Verify that provided sealants are applied to the underside
of the warmer top ange 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
ange 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.
ELECTRICAL INSTALLATION
1. Refer to the product nameplate. Verify the electrical service power.
Voltage and phase must match the nameplate specications.
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
specications listed on the specication sheet provided with the
warmer.
3. Warmer and control unit must be connected to an appropriate
building ground. Ground connection will be marked “GND” or
” “ .
NOTE: Wire gauge, insulation type and temperature rating , as well as
type, size and construction of conduit, must meet or exceed applicable
specications of local codes and of the National Electrical Code.
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
specied on the specication
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.

M011D.01 2M-Z17558 Owners Manual for Built-In Round T’Stat Warmers
8
INSTALLATION continued
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 qualied plumber.
2. For units equipped with a DRAIN LINE: Some jurisdictions
may require an approved air gap or other back-ow prevention
device in the drain. It is the responsibility of the plumber to
determine such requirement, to provide and properly install the
required device.
3. For SS4, SS8 and SS10 DRAIN LINE units, the drain must be
attached with a union at the drain line tting. This is necessary to
provide for future maintenance of the heating element.
4. AUTOFILL units require a drain valve (not supplied by Wells) to be
installed in order to operate correctly.
5. For AUTOFILL units: Some jurisdictions may require an approved
back-ow preventer in the water supply line. It is the responsibility
of the plumber to determine such requirement, and to provide and
properly install the required device.
Autoll supply must be connected to a COLD WATER line only.
6. AUTOFILL tee tting can be installed with the drain facing down or
turned 90° to manifold (not supplied) to another non-AUTOFILL unit.
NOTE: Plumb connections
must be made in compliance
with all Federal, State and
Local Plumbing Codes and
Ordinances.
WARNING:
RISK OF INJURY
While local plumbing codes
may allow the use of pcv,
cpvc, abs or other plastic pipe
for drain connections.
DO NOT attach a plastic
drain to the bottom of the
food warmer. These units
will contain water with
temperatures in excess of
180°F and localized metal
temperatures in excess of
275°F (135°C). Failure to
follow these directions may
result in personal injury and
property damage.

M011D.01 2M-Z17558 Owners Manual for Built-In Round T’Stat Warmers
9
OPERATION
WET OR DRY OPERATION for WARMERS
1. Carefully read the description of the warmer operation on the
specication sheet.
2. a. Most warmers are designed for WET OR DRY operation, except
AUTOFILL units..
b. Warmers may be used wet, or may be used dry. However
warmers may NOT be used wet-to-dry or dry-to-wet unless they
have been allowed to cool to room temperature between the
change in wet or dry operation.
c. Wells Manufacturing recommends operating WET for consistent
food heating.
d. If your wet-operation warmer is allowed to run dry, turn it OFF and
allow to cool to room temperature before adding water.
3. If the warmer is to be used for WET operation, add approximately 1” of
hot tap water before turning the warmer on. Use of hot water will allow
a faster preheat.
a. Check the water level frequently and add hot water as necessary
to prevent the warmer from running dry. Do not add water to the
warmer if it has run dry.
b. If your wet-operation warmer is allowed to run dry, turn it OFF and
allow to cool to room temperature before adding water.
4. Damage caused by allowing a wet-operation warmer to run dry,
is NOT covered by warranty. Damage caused by adding water
to a dry warmer when hot is NOT covered by warranty.
PRE-HEATING THE WARMER
1. Place desired pan(s) or inset(s) with appropriate adapter top on
warmer.
a. Insets are available as accessories in 2½ qt., 4qt., 7 qt.,
and 11 qt. sizes with lids and adapter tops.
b. For dry operation, a 6” deep pan or inset is recommended.
2. Turn temperature control to HI or highest temperature setting.
3. Allow warmer to preheat for approximately 30 minutes, then set
the control for the desired temperature. Be sure to keep the
warmer covered during preheat and 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.

M011D.01 2M-Z17558 Owners Manual for Built-In Round T’Stat Warmers
10
OPERATION continued
AUTOFILL WARMERS
1. Autoll warmers sense water level by a sensor placed at the proper
level. For manifolded autoll warmers, the water level sensor / ll tube
is in one pan only.
2. Water lls the pan through an inlet tube. All other sections if
manifolded, ll at the same time through the drain manifold.
3. The autoll function is active only when the thermostat for the pan with
the water level sensor is turned ON .
4. Make sure the drain valve is fully closed before turning any t-stats ON.
5. DO NOT use autoll warmers in the dry mode. This may damage the
water level sensor probe. NEVER turn the thermostat ON for the pan
with the probe and ll tube unless the entire warmer unit is to be used in
the wet mode.
6. Clean water level sensor daily to maintain water level in warmer.
OPERATION
1. Always use an inset. DO NOT place food directly into the
warmer.
2. Check water level in wet-operation warmer frequently during
use. Running warmers dry will lower the temperature of the
food in the insert pan, and may damage the warmer.
3. Alternating between wet and dry operation in any individual
warmer is NOT recommended.
4. DO NOT use metal tools, steel wool, or caustic or abrasive cleanser to
clean warmer pan.
WARMERS WITH MANIFOLDED DRAIN
1. Water poured into any one section will seek the same water level with
all sections on the manifold.
2. Make sure the drain valve is fully closed before lling warmer.
3. All units that are manifolded with the AUTOFILL unit, MUST be on
the same elevation and completely level with each other to operate
correctly.
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.

M011D.01 2M-Z17558 Owners Manual for Built-In Round T’Stat Warmers
11
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 nished with a grain
pattern. This pleasing nish 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 specically 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 (specic 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]

M011D.01 2M-Z17558 Owners Manual for Built-In Round T’Stat Warmers
12
DAILY CLEANING INSTRUCTIONS
PREPARATIONS: Turn control knob(s) to OFF. Allow warmer to cool
before proceeding.
Remove any insets, pans and/or adapter tops.
Drain or remove water from well if used for
wet operation.
FREQUENCY: Minimum - daily.
TOOLS: Mild Detergent
Solution: 10 Parts Warm Water to 4 Parts Vinegar
Plastic Scouring Pad
Clean Cloth or Sponge
Food-Grade Silicone Sealant
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 ange-to-counter seal. Reseal with food-grade
silicone sealant if necessary. Failure to do so may allow grease and
water to leak into insulation and heating element, causing a potential
re and/or electric shock hazard.
5. Inspect warmer tank for damage. Damage to the outer body may
allow grease and water to leak into insulation and heating element,
causing a potential re and/or electric shock hazard. Contact your
Authorized Wells Service Agency to inspect warmer if water or grease
contamination is suspected.
6. Close drain valve. Add proper amount of warm water. Turn control
knob(s) ON and check for proper operation.
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.

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13
CLEANING INSTRUCTIONS
WEEKLY CLEANING INSTRUCTIONS
PREPARATIONS: Remove any insets, pans and/or adapter tops.
Drain or remove water from well if used for wet
operation.
FREQUENCY: Weekly, or whenever lime or scale is seen
accumulating on the sides of the warmer pans.
TOOLS: Commercial Delime Cleaner
Plastic Scouring Pad
Clean Cloth or Sponge
1. Add water to pans until water is at normal operating level
(1” - 1 1/2” deep) or covers accumulated scale.
2. Heat water to maximum temperature (190ºF or higher).
3. Pour contents of one package of commercial delime cleaner
into each warmer pan. Stir to dissolve cleaner. Turn heat
control OFF. Cover pans.
4. Allow solution to soak at least one hour, or overnight for heavy
scale buildup.
5. Drain hot water from pans. Scrub with a plastic scouring pad.
Rinse thoroughly with hot water, then dry.
6. Rell pans with hot tap water and resume operation.
7. Heavy scale buildup may require additional treatments.
CAUTION:
CHEMICAL BURN
HAZARD
Delimng chemicals may be
caustic. Wear appropriate
personal protective equipment.
Follow cleaner manufacturer’s
instructions for safest use.

M011D.01 2M-Z17558 Owners Manual for Built-In Round T’Stat Warmers
14
TROUBLESHOOTING SUGGESTIONS
There are no user-serviceable components in this appliance.
In all instances of damage or malfunction, contact your Authorized Wells Service Agency for repairs.
SYMPTOM POSSIBLE CAUSE SUGGESTED REMEDY
No power to warmer Circuit breaker off or tripped Reset circuit breaker
Warmer will not heat Temperature control not set Set control to desired temperature
Warmer trips circuit breaker
Wet insulation Verify ange-to counter seal is sound, or reseal with food-
grade silicone sealant
Pan leaking or other internal damage Contact your Authorized Wells Service Agency for repairs
Internal damage Contact your Authorized Wells Service Agency for repairs
Warmer slow to heat
Mineral deposits on pan acting as a
insulator Clean pan(s) with delime cleaner
Wired to wrong voltage Verify supply voltage - must match voltage on warmer
nameplate
Drain-equipped unit will not
hold water
Drain valve not fully closed Check drain valve for debris and close fully
Drain valve damaged or pan(s)
leaking Contact your Authorized Wells Service Agency for repairs
Auto-ll unit overows Water level sensor dirty Clean water level sensor
Internal damage Contact your Authorized Wells Service Agency for repairs
Auto-ll unit does not ll
Water supply turned off or
restricted
Be sure water supply is turned on and water supply hose
is not pinched or twisted
Bad Probe or other Internal Damage Contact your Authorized Wells Service Agency for repairs
One or more pans of an
auto-ll unit do not ll Blocked drain manifold Clean drain manifold
37
20
2
2
ALTERNATE LOW
WATER CONTROL
HZ
60
TERM. BLOCK
THERMOSTAT
PILOT LIGHT
WATER FILL VALVE
38
36
35
34
1
19
19
3
COM
PROBE
1
2
3
4
L1
L2
L3
2M-Z17507 REV (-)
WIRING DIAGRAM FOR SS4, 8, 10 ROUND WARMERS W/ AUTOFILL
120 AND 208/240V, SINGLE PHASE
LOW WATER CONTROL
50
HEATING ELEMENT
20
WATER PAN
PROBE
34
37
35
19
38
36
INPUT
NO
COMMON
MAX
35
3
4
GREEN
BLACK
WHITE
OPTIONAL
POWER CORD
(120V, 208V, 240V)
GREEN
PER LINE
NOM. AMPS
VOLTSWATTS
3.4
240825
3.0
208620
6.9
120825
L1
L2
L3
5
COM
37 34
4
WIRING DIAGRAM - AUTOFILL

M011D.01 2M-Z17558 Owners Manual for Built-In Round T’Stat Warmers
15
WIRING DIAGRAM
PILOT
LIGHT
HEATER ELEMENT
APPLIANCE WIRE.
16 GA. NICKEL STRANDED
L2
L1
3
7
GREEN
4
6
3.4
240825
3.0
208620
6.9
120825
1.9
240
450
1.6208338
3.8120450
PER LINE
NOM. AMPS
VOLTSWATTS
12
5
8
GREEN
WIRING DIAGRAM FOR SS4ULT(C); SS8ULT(C); SS10ULT(C)
120 OR 208/240V SINGLE PHASE
WITH OR WITHOUT OPTIONAL POWER CORD
P/N 2M-46227 REV. D
THERMOSTAT
GREEN
BLACK
WHITE
THERMOSTAT
OPTIONAL
POWER CORD
(120V, 208V, 240V)

M011D.01 2M-Z17558 Owners Manual for Built-In Round T’Stat Warmers
16
EXPLODED VIEW & PARTS LIST
SS8T and SS10T with & without Drain
IL1904 Rev. F 4/08/15
Model: SS4T, SS8T & SS10T (w & w/o Drain)
SS4TU, SS8TU & SS10TU (w & w/o Drain)
1
2
22 3
4
5
6
8
7
16
16
17
18
19
23
9
10
11
12
21
20
13
14
15

M011D.01 2M-Z17558 Owners Manual for Built-In Round T’Stat Warmers
17
PARTS LIST
SS4T, SS8T & SS10T units with & without drain April 08, 2015, Rev B
Model: SS4T, SS8T, SS10T (Insulated & non-insulated) with & without Drian
Fig No Part No. Description Qty Application
12V-Z17446 Drain Screen 1 Drain Units
2
WS-63527
Pot Assembly
1
SS4ULT
WS-50391 SS8ULT, SS8T
WS-51232 SS10ULT, SS10T
WS-63528
Pot Assembly w/Drain
SS4ULTD
WS-50504 SS8ULTD, SS8TD
WS-50392 SS10ULTD, SS10TD
P2-WL0292
Pot Assembly Insulated
SS4TUI
P2-WL0290 SS8TUI
P2-WL0288 SS10TUI
P2-WL0291
Pot Assembly Insulated w/Drain
SS4TDUI
P2-WL0289 SS8TDUI
P2-WL0287 SS10TDUI
3
P2-WL0321
COVER, SIDE INSUL RIVETED 1
SS4I, manufactured before 4/2015
P2-WL0714 SS4I, manufactured on or after 4/2015
P2-WL0316 SS8I
P2-WL0314 SS10I
4
2H-Z16125 Insulation, Side SS4I
1
SS4I
2H-Z16063 Insulation, Side SS8I SS8I
2H-Z15568 Insulation, Side SS10I SS10I
52H-Z16062 INSULATION, BOTTOM 1 SS4I, SS8I
2H-Z15567 2 SS10I
6
P2-Z16122
COVER, BOTTOM INSULATION 1
SS4I
P2-Z16060 SS8I
P2-Z15570 SS10I
7P2-WL0323 BOX OUTLET 1 SS4, SS8, SS10, SS4T, SS8T, SS10T
P2-Z16089 SS4I, SS8I
8P2-31862 OUTLET BOX COVER 1
92K-34136X FTG FLEX CON 90° X 1/2” MOD 1 CONDUIT UNITS
2K-37748X FTG CONDUIT STRAIGHT 3/8
10 P2-Z16805 CONTROL BOX 1 CONDUIT UNITS
11
2T-46269 THERMOSTAT CONTROL
1
SS4TU, TUC, TUCI, TDU, TDUC, TDUCI, SS8EUT-230V, SS8TU, TUC,
TDUC, SS10T-230V, SS10TD-230V, TU, TUC, TDUC, TDUCI
2T-46551 THERMO CTRL 96IN CAP SS4ULT6, SS4TDUI6, SS8ULT6, SS8TDUC6-120
P2-Z16162 THERMOSTAT , FORMED
BULB
SS10I
P2-Z16163 SS8I
P2-Z16754 THERMOSTAT FORM 96” SS10TDUCI612, SS10TUCI6120, SS10TDUI6, SS10TDUI6120
P2-Z16942 THERMOSTAT 96” SS8TDUCI6120, SS8TUCI6-120, SS8TUCI6, SS8TDUCI6, SS8TDUI6
WS-60282 THERMO CONTROL SS4T, SS4TD, SS8T, SS8TD, SS10T,

M011D.01 2M-Z17558 Owners Manual for Built-In Round T’Stat Warmers
18
PARTS LIST
SS4T, SS8T & SS10T units with & without drain April 08, 2015, Rev B
Model: SS4T, SS8T, SS10T (Insulated & non-insulated) with & without Drian
Fig No Part No. Description Qty Application
12 P2-40843 THERMOSTAT MOUNTING
BRKT 1
13 I7-Z12221 CONTROL PANEL 1
14 2J-35687 LIGHT SIGNAL 1
15 2R-40498 CONTROL KNOB ASSY 1
16 2C-33935 SCREW 3
17
D8-306439
CLAMP BULB 3
SS4, SS8, SS10, SS4T, SS8T, SS10T
P2-Z16136 SS4I
P2-Z16036 SS10I
P2-Z16036 4 SS8I
18 WS-506272 KIT, ELEMENT & SUPPORT 1 120V
WS-506273 208/240V
19 WS-51878 ELEMENT COVER 1
20 2V-WL0049 PANEL, CONTROL OVAL/
GUARD 1
21 2C-43271 CLIP RETAINER PILOT LIGHT 1
22
P2-WL0718
Pot Assembly
1
SS4ULT
P2-WL0760 SS8ULT, SS8T
P2-WL0758 SS10ULT, SS10T
P2-WL0717
Pot Assembly w/Drain
SS4ULTD
P2-WL0761 SS8ULTD, SS8TD
P2-WL0759 SS10ULTD, SS10TD
P2-WL0716 Pot Assembly Insulated SS4TUI
P2-WL0715 Pot Assembly Insulated w/Drain SS4TDUI
23
P2-WL0719
ASM-ELM MTG 1
SS4I
P2-WL0691 SS4, SS8
P2-WL0757 SS10
NI
P2-40634 CONDUIT, FLEX 1/2” X 28”
1
P2-47595 CONDUIT 6’ FOOT SS4TDUI6-120, SS8TU6, SS8TDUC6-120,SS8TDUCI6, SS8TDUCI6120,
SS10TDUI6
NI P2-Z15643 CORDSET-14/3, 6-15P,
208/240V 1 208/240V CORDED UNITS
NI P2-Z15641 CORDSET-14/3, 5-15P, 120V 1 120V CORDED UNITS

M011D.01 2M-Z17558 Owners Manual for Built-In Round T’Stat Warmers
EXPLODED VIEW AUTO-FILL
19
Model: SS10TDUIAF (w Drain & AUTO-FILL) SK2697, Rev. A , 4/09/15
SEE DETAIL A
2
1
3
4
5
6
7
8
9
10 38
37
36
35
11
12
13 13
14 15 16 17 18

M011D.01 2M-Z17558 Owners Manual for Built-In Round T’Stat Warmers
20
EXPLODED VIEW AUTO-FILL: Detail A
Model: SS10TDUIAF (w Drain & AUTO-FILL)
CONTROL PANEL ASSEMBLY
SK2893 Rev. - , 4/09/15
DETAIL A
19
22
23
27
28
29
31 32
33 34
30
18
24
20
21
9
25
26