This manual is considered to be part of the appliance and is to be given
to the OWNER or MANAGER, or to the person responsible for training
THIS MANUAL IS TO BE UNDERSTOOD BY ALL PERSONS USING
Contact Carter-Hoffmann if you have questions regarding installation,
MT23-6
SAFETY PRECAUTIONS……………………………………... 2
UNPACKING & INSPECTION, FREIGHT DAMAGE.………. 3
GROUNDING INSTRUCTIONS……………………………….. 3
INSTALLATION & START-UP…………………………………. 4
SPECIFICATIONS…………..…………….…..……...………… 5
CLEANING……………………………...………….……………. 6-7
FEATURES & OPERATING CONTROLS……………………. 7
NORMAL OPERATION ………………………….……………. 8
CONTROLLER PROGRAMMING ………………………….… 9
WIRING DIAGRAM AND PARTS LIST……………………….. 10
SERVICE EXPECTATIONS……………………………………. 11
WARRANTY STATEMENT…………………………………….. 12
TABLE OF CONTENTS
IMPORTANT: DO NOT DISCARD THIS MANUAL
operators of this appliance.
OR INSTALLING THIS APPLIANCE.
operation or maintenance of this equipment.
READ THIS MANUAL COMPLETELY
BEFORE OPERATING THIS APPLIANCE
Knowledge of proper installation, operation and maintenance procedures is essential to ensure the safe operation of this oven.
1. Always have dry hands prior to using the ON/OFF switch.
2. Turn OFF the ON/OFF switch anytime the cabinet is not in use for extended periods of time.
3. If an electrical shock is felt when touching the cabinet, disconnect the power immediately and call Carter-Hoffmann Technical Service
for assistance or service.
4. If the power cord is frayed or the plug damaged, DO NOT PLUG INTO THE ELECTRICAL POWER RECEPTACLE. IF IT IS
ALREADY PLUGGED IN, SHUT OFF THE MAIN CIRCUIT BREAKER, LOCATED IN THE BREAKER BOX, THEN DISCONNECT
THE PLUG.
5. DISCONNECT THE POWER CORD BEFORE ATTEMPTING ANY REPAIRS TO THE CABINET AND/OR CLEANING THE UNIT.
REPAIRS TO THIS UNIT MUST BE PERFORMED BY QUALIFIED PERSONNEL.
6. DO NOT SPRAY WITH WATER HOSE OR SUBMERGE THE CABINET. ELECTRICAL COMPONENTS AND WIRING PRESENT A
HIGH SHOCK HAZARD WHEN WET.
Rev: KBA022513 Printed in The United States of America Part Number 18400-3179
SAFETY
Page 2
SAFETYPRECAUTIONS
WARNING: ELECTRIC SHOCK HAZARD
WARNING
When using electrical appliances basic safety precautions should be adhered to, including the following:
1) 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.
2) This appliance must be grounded. Connect only to properly grounded outlet.
See “Grounding Instructions” found on page 3.
3) Use this appliance only for its intended use as described in the manual.
a. This equipment is specifically designed to hol d pre-cooked food at temperature.
b.
c. This equipment is not designed for industrial or laboratory use.
4) Cleanliness of this appliance and accessories is essential to good sanitation.
5) DO NOT submerge this appliance in water. This appliance is not jet stream approved. DO NOT direct
water jet or steam jet at this appliance, or at an y control panel or wiring. DO NOT splash or pour water
on, in or over an y controls, control panel or wiring. DO NOT use corrosive chemicals or vapors in this
appliance.
6) DO NOT operate this appliance if it has a damaged cord or plug, if it is not working properly, or if it has
been damaged or dropped. Do not immerse cord or plug in water, keep cord away from heated
surfaces, and do not let cord hang over edge of table or counter.
7) Only qualified service personnel should service this appliance. Contact nearest author ized service
facility for examination, repair, or adjustment.
8) DO NOT cover or block any openings on the appliance.
9) DO NOT store this appliance outdoors. DO NOT use this product near water – for example,
near a kitchen sink, in a wet basement, or near a swimming pool, and the like.
10) DO NOT use the appliance for storage. DO NOT store flammable or combustible materials in or near
the appliance. Never leave anything in a warming cavity when the appliance is not in use.
All servicing requiring access to non-insulated components must be performed by
qualified service personnel. DO NOT open any access panel that requires the use
of tools. Failure to heed this warning may result in severe electric shock.
CAUTION: ELECTRIC SHOCK HAZARD
Disconnect this appliance from electrical power before performing any
maintenance or servicing.
CAUTION: BURN HAZARD
Exposed metal surfaces can be hot to the touch and may cause burns.
IMPORTANT SAFETY INSTRUCTIONS
This equipment is intended for use in commercial establishments only.
SAVE THESE INSTRUCTIONS
2
Page 3
UNPACKING AND INSPECTION
This appliance
should be
thoroughly
cleaned prior to use.
See the CLEANING
INSTRUCTIONS on
page 6 in this manual.
NOTE: DO NOT discard
the carton or other
packing materials until
you have inspected the
appliance for hidden
damage and checked it
for proper operation.
Refer to FREIGHT
DAMAGE CLAIM
PROCEDURE below.
1. Remove the cabinet from shipping carton, ensuring that all packing
materials and protective plastic have been removed from the unit.
2. Inspect all components for completeness and condition.
3. If any freight damage is present, a freight claim must be filed immediately with the shipping company.
4. Freight damage is not covered under warranty.
5. Check to insure all components are included: warmer (base, shroud),
instruction packet and additional accessories:
- Polycarbonate pans with lid (2 pans)
- Ladle (2 ladles)
1. Read operation instructions completely.
2. Appliance should be thoroughly cleaned before use. See CLEANING
INSTRUCTIONS on page 6 in this manual.
NOTE: For your protection, please note that equipment in this shipment was carefully inspected and packaged by
skilled personnel before leaving the factory. Upon accept ance 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 damage. Contact your dealer immedi-ately.
3. CONCEALED DAMAGE: If damage is unnoticed until the merchandise is unpack ed, notify the transportation company or carrier immediately, and then file a “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.
Carter-Hoffmann cannot assume liability for damage or loss incurred in transit, freight damage is not covered under
warranty. We will, however, at your request, supply you with the necessary documents to support your claim.
FREIGHT DAMAGE PROCEDURE
GROUNDING INSTRUCTIONS
This appliance is equipped with a cord having a grounding wire with a grounding plug which must be plugged into an
outlet that is properly installed and grounded. In the event of an electrical short circuit, grounding reduces the risk of
electric shock by providing an escape wire for the electric current.
WARNING—Improper use of the grounding can result in a risk of electric shock. Consult a qualified electrician or
service agent if the grounding instructions are not completely understood, or if doubt exists as to whether the applianc e
is properly grounded.
3
Page 4
IMPORTANT:
Front and back of cabinet
must remain clear for
access.
Maintain 2” of clearance
on each side of cabinet to
allow for adequate cooling.
Maintain 5” of clearance
above the warmer to allow
opening/closing of pan covers.
NOTE: The technical content of this manual, including any wiring diagrams,
schematics, parts breakdown illustrations and/or
adjustment procedures, is
intended for use ONLY by
qualified technical personnel.
INSTALLATION AND START-UP
1. Check for proper voltage and circuit breaker size. Cabinet requires 120
volt, single phase, 15 Amp circuit. Refer to serial tag on the rear for the
electrical requirements for your particular warmer.
2. Ensure receptacle is correctly installed and operating safely. Requires
grounded NEMA 5-15R receptacle.
3. Position warmer on table or counter top. Maintain 2” of clearance on each
side to allow for adequate cooling.
4. Make sure there is at least 5” of clearance above the unit to allow opening/
closing of the pan covers.
Location
For proper operation and maximum performance, locate the unit in an ambient
air temperature of less than 80°F (21°C).
Avoid areas near exhaust fans where there are active air movements.
For safe operation, locate the unit a reasonable distance from combustible
walls and materials.
To prevent injury and damage, locate the unit at a proper and safe working
height. The location should be level, clean of debris, and strong enough to
support the weight of a fully loaded unit.
Counter-top Mounting
To prevent electrical shock, be sure unit is unplugged from an electrical outlet.
If unit has been operated, allow unit to cool before installing. For safety
reasons, countertop must be made of a non-combustible material, clea n and
free of debris.
Sample serial tag
location of electrical specs
ELECTRICAL SPECIFICATIONS
MODEL PANS WATTS VOLTS AMPS
MT23-6 2 400 120 3.3
Due to the nature of continuing change to the number of
configurations we manufacture, your model may not be
listed here. Refer to the serial tag on your cabinet for
actual electrical specifications.
4
GROUND
PIN
NEMA 5-15P
PLUG
NEMA 5-15P
RECEPTACLE
Page 5
SPECIFICATIONS
INTRODUCTION
Carter-Hoffmann MT Cabinets
are designed to hold pre-cooked
food products at temperature.
Warmers are available with digital
controls with timers. Each pan is
independently controlled.
MT23-6
Model Pan Capacity Electrical Requirements Overall Dimensions
Number 1/3 size Shipping
Approximately Height Depth Width Weight
6.75 x 12.5 x 6 in. Volts / Phase / Hz / Amps / Watts in mm in mm in mm lbs kg
CONSTRUCTION...All stainless steel
cabinet construction. Modular design
with one controller and one pan cavity
per well.
CABINET MATERIAL...All stainless
steel construction; 20 gauge polished
exterior. Each well has an aluminum
plate heater.
LEGS... Four rubber feet.
OVERHEAD CLEARANCE... Minimum
5” required over unit required for opening pan covers.
CONTROLLERS... programmable
electronic temperature controls with
countdown timer and audio/visual
alarm. One control for each pan. Each
controller allows user to program temperature in one degree increments up
to 225°F (107°C) and up to six pre-set
times. Timer can be set for up to 9
hours, 59 minutes, in 1 minute increments. Countdown will convert to seconds when less than one minute is left.
HEATING SYSTEM... Each well operates on one 200 watt silicone pad heater for each module, 400 watts total.
Each well has individual digital controls.
ELECTRICAL CHARACTERISTICS...
Operates on 120 volts, 60 cycle, single
phase, 400 watts, 3.3 amps. Six foot 3
wire rubber cord with 3 prong grounding plug. NEMA 5-15P.
PERFORMANCE...Capable of heating
to 225°F (107°C). Preheat to 200°F
(93°C) in less than 10 minutes. Default
set-point for “P1” program is 200°F
(93°C)
ACCESSORIES (included)...
Two 1/3 size pans with hinged covers
Two 5 oz. ladles
5
Page 6
CAUTION:
ELECTRIC SHOCK
HAZARD
Disconnect appliance from
electric power before cleaning.
CAUTION:
HOT SURFACE
Exposed surfaces can be hot
to the touch and may cause
burns. Allow appliance to cool
before cleaning.
IMPORTANT:
DO NOT spill or pour
water into controls,
control panel or wiring. Water
damage is not covered by
warranty.
CLEANING
CAUTION: Unplug cabinet and allow to cool before cleaning.
Daily Cleaning:
1) Turn off warmer and remove power cord plug from outlet. Allow cabinet
to cool.
2) Remove pans and clean them in the sink with mild detergent and allow
to dry.
3) Remove shroud that holds the pans and wa sh with mild detergent and
warm (not hot) water. Wipe clean with clean damp cloth.
3) Wipe warmer base with a clean damp towel.
4) Rinse by wiping with a clean towel moistened with clean water. Allow
to air dry.
5) Connect power cord.
Weekly Cleaning:
1) Turn cabinet off and remove power cord plug from outlet. Allow cabinet
to cool.
2) Remove pans and pan covers. Clean them in the sink with mild detergent and allow to dry.
3) Remove shroud that holds the pans and wa sh with mild detergent and
warm (not hot) water.
4) Wipe cabinet and surfaces of warming pads with a clean towel until
clean. For heavy soils, use a non-scratch or nylon scouring pad.
5) Rinse by wiping with a clean towel moistened with cle an water. Allow
cabinet to air dry.
6) Pans may be cleaned in the sink with mild detergent. Rinse an d allow
to air dry.
7) Connect power cord.
CAUTION: Cleansers, detergents, degreasers, sanitizers, or
bleaching agents that contain chlorides or phosphates will cause
permanent damage to stainless steel products. The damage
appears as pits, eruptions, voids, small holes, severe discolora-
tion or dulling of the metal finish.
Water with high chloride content can also damage stainless steel. If un-
sure of your water quality, we recommend you have it tested. THIS DAMAGE IS PERMANENT, COSTLY TO REPAIR, AND IS NOT COVERED
BY THE WARRANTY.
See next page for tips on cleaning stainless steel.
6
Page 7
RECOMMENDED TIPS FOR CLEANING STAINLESS STEEL
Purpose Frequency Cleaning Agent Method of Application
Routine Daily Soap, ammonia Sponge with cloth, rinse with clear water
cleaning detergent and wipe dry.
and water
Smears/ As Stainless steel cleaner Rub with soft cloth as directed on package.
Fingerprints needed or similar products Rub in direction of grain of stainless steel.
Do not use on vinyl trim.
Stubborn Daily Any chloride-free Apply with damp sponge or cloth. Rub in
spots and as or direction of grain of stainless steel. Rinse
stains needed phosphate-free thoroughly, especially if cleaner contains
cleaner chlorine bleach; do not use on vinyl trim.
Hard water Daily Vinegar Swab with cloth.
spots as needed Rinse with water and wipe dry.
FEATURES & OPERATING CONTROLS
DIGITAL CONTROLS
DIGITAL READOUT
TEMP KEY
DIGITAL CONTROLS
(one for each warmer)
TIME KEY
INCREASE & DECREASE KEYS
ON/OFF SWITCH
7
Page 8
NORMAL OPERATION
Temperature
Typical
Temperature
Module is
READY
NOTE: Timer cannot be
started until the warmer is
pre-heated.
NOTE: Press and release
the TEMP key to
view of verify a cavity
Set-point. Cavity set-point
will be displayed briefly. If
the cavity set-point needs
to be changed, refer to
Programming Instructions
on page 9.
NOTE: Program timer
defaults to “P1” each time
the unit is turned OFF then
back ON.
Typical Time Remaining
1. Press the POWER switch, located on the front panel, to ON. Illuminated
portion of the switch will glow, indicating power is ON. Pre-heat the cabinet
for 20 minutes. When first turned on, digital readout will display “LO” until the
cabinet reaches 122°F (50°C).
Cavity temperature set-point range is between 122°F (50°C) & 225°F (107°C).
After the cabinet reaches 122°F (50°C), the digital readout will display the
current temperature, until the temperature reaches the set-point. Once the
cabinet reaches the set-point, the digital readout will display “P 1”. This
indicates the cabinet is ready to hold product.
2. Select the desired timer program by pressing the INCREASE / DECREASE
arrow keys. The cabinet has six programmable timers (“P 1”, “P 2”, “P 3”,
“P 4”, “P 5”, and “P 6”) for each cavity. Different program timers can be used
for different parts of the day (Breakfast, Lunch, Dinner) or alternate products.
NOTE: To select other timer programs (“P 2” through “P 6”), press the
INCREASE KEY or DECREASE KEY until the digital readout
displays the desired program.
3. After pre-heat, load cooked product into pan(s) and place pan(s) in cavity.
Press the TIME KEY to start the timer. Refer to Programming Instructions to change the programmed time
4. The digital readout will count down, displaying the remaining time. The digital
readout is displayed in hours and minutes until the time remaining is less than
one minute. Once the time remaining is less than one minute, the digital
readout counts down in seconds.
5. At the end of the timed cycle, the digital readout will flash “000” and an alarm
will sound until the TIME KEY is pressed.
6. The digital readout will display the currently selected timer (e.g. “P 1”),
indicating that the cabinet is ready to hold product.
NOTE: Timer can be
cancelled at any time
during the cycle by
pressing and holding the
TIME KEY for 2
seconds. Digital readout
will display currently
selected timer (e.g “P 1”).
Timed Cycle
Completed
7. At the end of the day or serving period, press POWER switch to OFF. Allow
warmer to cool.
8. Remove product pan from cavity. Discard any unused food portions and
wash pan in warm soapy water. Rinse and allow to dry.
9. Follow cleaning instructions for cabinet on page 6.
DIGITAL
READOUT
INCREASE KEY
DECREASE KEY
TEMPERATURE KEY
POWER SWITCH
TIME KEY
8
Page 9
To enter into program
mode, display must
be in operating mode
and not in a timing
cycle .
NOTE: Each well can
be programmed individually.
NOTE:
“P1” must be displayed
before temperature
scale can be changed.
If “P1” is not displayed,
press ARROW KEY to
display “P1.”
TEMPERATURE
SETPOINT RANGE:
122ºF - 225ºF
(50°C - 107°C)
“P1” TEMPERATURE
DEFAULT SETPOINT:
200ºF(93°C)
TIMER RANGE:
1 minute to 9 hours, 59
minutes
NOTE: While in the
program mode, if no
key is pressed for 10
seconds, any changes
will be saved and the
control returns to normal operation mode.
NOTE:
The technical content of
this manual, including any
wiring diagrams, schematics, parts breakdown
illustrations and/or adjustment procedures, is
intended for use ONLY
by qualified technical
personnel.
DIGITAL CONTROLLER PROGRAMMING
PROGRAM TEMPERATURE SETPOINT
1. Press and hold the TEMP KEY until display flashes.
2. Press INCREASE KEY or the DECREASE KEY to raise or lower
temperature or time set - point. Each time the key is pressed, set-point is
changed by 1º.
3. Press TEMP KEY to save changes
PROGRAM TIMERS (P1 through P6)
1. Press and hold TIME KEY until display flashes.
2. Press INCREASE KEY or the DECREASE KEY to raise or lower
time set-point. Each time the key is pressed, set-point is changed by one
minute. Hold the key to scroll faster.
3. Press the TIME KEY to save changes and return to “P 1”.
4. To program timers “P 2” through “P 6”:
5. Press INCREASE KEY or DECREASE KEY to select desired
timer program number (“P 2” thru “P 6”).
6. Repeat steps 1 through 3 above for each program.
TO CANCEL TIMER
Press and hold TIME KEY for 2 seconds.
TO CHANGE THE TEMPERATURE SCALE
Press the TEMP KEY until the temperature starts flashing. Then, press both
the up and down arrow buttons (together) until ‘F’ (Fahrenheit) is displayed.
Press the up or down arrow keys to toggle between ºC and ºF.
Once selected, press the TEMP KEY to save and exit.
DIGITAL
READOUT
INCREASE KEY
TEMPERATURE KEY
DECREASE KEY
9
POWER SWITCH
TIME KEY
Page 10
WIRING DIAGRAM AND PARTS LIST
MT23-6 120V / 400W / 3.3 A / 60HZ / 1PH
Part Number Description
16090-3574 Heating element—200 watts
18616-0267 Timer—225°F
18603-9092 Thermister ring 12” RoHS
18616-0268 Power supply RoHS
18600-0076 Hi-limit 248°F, UI2-120C
18602-0160 Rocker switch
18605-0010 16/3 HSJO cord with 5/15 plug
16505-3928 S.S. pan shroud
18314-0001 Amber 1/3 pan 6” deep
18314-0002 Amber 1/3 notched pan lid
18314-0005 4 ounce soup ladle
NOTE:
The technical content of this manual, including
any wiring diagrams, schematics, parts breakdown illustrations and/or adjustment procedures,
is intended for use ONLY by qualified technical personnel.
10
Page 11
SERVICE EXPECTATIONS
Service Philosophy
For over sixty years, Carter-Hoffmann has earned a reputation for manufacturing rugged and
dependable foodservice equipment that permits foodservice professionals serve better food
products to more people, and thus, grow their business.
Our goal is not only to provide the best food service equipment for the price, but also to back it up
with after-sale service that is responsive, fast, efficient and professional. Carter-Hoffmann products
are innovative and efficient. They are easy to use, easy to clean and easy to maintain. Although the
products are quite reliable, they are also designed to be easy to repair when necessary.
We believe that a malfunction to a Carter-Hoffmann product should cause as little inconvenience to
the customer as possible. Our goal is to provide the same day service or within 24 hours and strive
to fix it the first time. We are dedicated to making every aspect of our customer service the standard
by which others are judged.
End-User Responsibilities
While we all strive to serve our mutual customers as well as possible, we remind the end-user
(and their employees) that they also have some responsibilities.
1. All shipping damage must be noted on the freight bill when the shipment is received. Any freight
damages must be collected from the Freight Company, NOT Carter-Hoffmann.
2. The end-user should be advised beforehand to carefully unpack and inspect all products when
they are received BEFORE SIGNING THE SHIPPER'S RECEIPT OF DELIVERY.
3. The end-user must provide a safe, dry, level surface for the equipment to be placed upon.
4. The end-user must provide the proper electrical supply. All in-wall electrical modifications are to
be completed by a licensed electrician. All building modifications are the responsibility of the end
user. Specification literature changes frequently, please verify proper installation is possible.
5. The end-user must operate, clean and maintain the equipment in accordance with the
procedures described in this Operation Manual.
6. Carter-Hoffmann is NOT responsible for any loss of the customer’s income, loss of food product,
extra labor charges, or any other incidental or consequential costs as a result of the malfunction
of our product.
7. The end-user shall allow for on-premises repair of the equipment to be completed at a mutually
convenient place and time.
Warranty Service
1. Warranty service is to be initiated by authorized Carter-Hoffmann personnel only, please call
Carter-Hoffmann directly and we will take care of everything. Have your store number and the
serial number of the warmer handy. The serial number can be found on the rear of the warmer.
2. The service provider is NOT authorized to change or extend any of the terms or conditions of our
warranty.
3. Initial freight damage is NOT covered by the product warranty.
Confidentially
1. The end user and all his employees and sub-agents shall protect and keep confidential CarterHoffmann’s proprietary designs, information, and knowledge.
2. All literature and informational materials provided by Carter-Hoffmann are to be considered
confidential; they remains Carter-Hoffmann’s property; and are not to be reproduced without our
prior approval
NOTE:
The technical content of this manual, including any wiring diagrams, sche matics, parts breakdown illustrations
and/or adjustment procedures, is intended for use ONLY by qualified technical personnel.
11
Page 12
Carter-Hoffmann Warranty:
Carter-Hoffmann (“CARTER-HOFFMANN”) warrants to the initial purchaser of its standard Carter Line Products that CARTER-HOFFMANN will, at its option, repair or replace, during the warranty period set forth below,
any part of such products made necessary due to a defect in material or workmanship which is present when the
product leaves its factory and which manifests itself during the warranty period under normal use and service.
This warranty applies only to original equipment owned and possessed by th e initial purchaser and the warranty
period begins on the date of original shipment from the CARTER-HOFFMANN factory and extends as follows: to
component parts and labor for 12 months.
Repair or replacements under this warranty will be performed, unless otherwise authorized in writing by CARTER
-HOFFMANN, at its factory. All parts or components to be repaired or replaced under this warranty are to be
shipped prepaid to CARTER-HOFFMANN, with reimbursement credit for such part or component to be given if
found by CARTER-HOFFMANN to be defective.
CARTER-HOFFMANN neither makes nor assumes and does not authorize any other person to make or assume
any obligation or liability in connection with its produ cts other than that covered in this warranty. This warranty
applies only within the continental United States and Canada. In Alaska and Hawaii, this warranty applies only to
and is limited to the supply of replacement parts.
Warranty Exclusions and Limitations:
Any implied warranty of merchantability or fitness for a particular purpose is hereby specifically disclaimed by
CARTER-HOFFMANN. There are no warranties, expressed or implied, which extend beyond the description on
the face hereof. This warranty does not cover and CARTER-HOFFMANN shall not under any circumstances be
liable for any incidental, consequential or other damages (such as injury to persons or property, loss of time, inconvenience, loss of business or profits, or other matters not specifically covered) arising in connection with the
use of, inability to use, or failure of these products.
Specifications are subject to change through product improvement and innovation.