Carter-Hoffmann MDPM2, MDPM4 Operation Manual

PIE MERCHANDISING CABINETS

MODELS:

OWNERS / OPERATORS MANUAL

MDPM2 & MDPM4

MANUFACTURED BY:

CARTER-HOFFMANN

1551 McCormick Avenue

Mundelein, IL 60060 U.S.A.

Phone: [phone]

Fax: [phone]

Toll Free: 800-323-9793

Email: [e-mail]

READ THIS MANUAL
COMPLETELY BEFORE
OPERATING THIS
APPLIANCE

MDPM2

(shown)

TABLE OF CONTENTS

SAFETY PRECAUTIONS……………………………..……….. 2

FEATURES & SPECIFICATIONS………..……………..……. 3

UNPACKING AND INSPECTION…………………………….. 4
INSTALLATION & START-UP………………………………… 5
NORMAL OPERATION ..…...…………………………………. 6
CONTROLLER PROGRAMMING…………………………….. 7
DAILY CLEANING PROCEDURES………………..…………. 8
MAINTENANCE………………………………………………… 9

WIRING DIAGRAMS…………………......……………………. 10

PARTS IDENTIFICATION……………………….. …………… 11
PARTS LIST…………………………………………………….. 12
TROUBLESHOOTING GUIDE………………………………… 13
WARRANTY STATEMENT……….……………….…………... 14

Part Number: 18400-3148 Printed in The United States of America Rev: KBA062510

SAFETY PRECAUTIONS

WARNING: ELECTRIC SHOCK HAZARD

WARNING

All service requiring access to non-insulated components must be performed by
qualified service personnel. 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 service.

CAUTION: BURN HAZARD

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

IMPORTANT SAFETY INSTRUCTIONS

When using electrical appliances basic safety precautions should be adhered to, incl uding the following:

1) 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 outle t.

3) Use this appliance only for its intended use as described in the manual.
a. This equipment is specifically designed to hold pre-cooked food at temperature.
b.
c. This equipment is not designed for industrial or laboratory use.

4) Cleanliness of this applia nce 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 any control panel or wiring. DO NOT splash or pour water on,
in or over any controls, control panel or wiring. DO NOT use corrosive chemicals or vapors in this

appliance.

6) 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.

7) 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.

8) Only qualified service personnel should service this appliance.

9) DO NOT cover or block any openings on the appliance.

This equipment is intended for use in commercial establishments only.

NOTE:

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 and is subject to change without notice.

2

FEATURES & SPECIFICATIONS

MDPM2

MDPM4 MDPM2

Removable Pie Caddy

Pie Merchandising Cabinets

Carter-Hoffmann pie merchandising cabinets are designed to hold individually boxed pies and other
hand-held food items at serving temperature. Each cabinet has a programmable controller with a low
temperature alarm. The controller is factory pre-set at holding temperature of 165°F (74°C) and low
temperature alarm of 140°F (60°C). Each cabinet has a removable product caddy.

Capacity/Dimensional Characteristics

Model

Number

MDPM2
MDPM4

Capacity

3” x 6” x 1.25”

boxes

28 17.5 (445) 26.375 (670) 10 (254) 9.5 (241) 40 (18)
42 17.5 (445) 26.375 (670) 10 (254) 12.188 (310) 45 (20)

Inside Working Height

In (mm)

Height

In (mm)

Overall Dimensions Weight

Depth

In (mm)

Width

In (mm)

Lbs (kg)

Agency Approvals

Cabinet Material: All stainless steel double-wall cabinet construction. Modular design with one controller

featuring single temperature control. Removable interior caddy. High density fiberglass insulation in
top bottom and sides. Illuminated display in door for graphic panel.

Controls: Electronic temperature control with low temperature alarm. Allows user to program temperature in

one degree increments up to 225°F (108°C).

Heater System: Blower heating system with electronic temperature control. On/off toggle switch. Blower sys-

tem with precision engineered air venting in removable caddy.

Electrical Characteristics:

1) 120 volts, 60 Hz, single phase, 500 watts, 4.2 Amps. Ten foot power cord with 15 amp plug.

2) 200-208 volts, 413/446 watts, 50-60 Hz, single phase, 2.1-2.2 Amps*

3) 220-240 volts, 500/595 watts, 50-60 Hz, single phase, 2.3-2.5 Amps*
* International versions; specify plug by destination country

Performance: Capable of heating to 225°F (108°C). Preheat to 175°F (74°C) in 10 minutes.

Specifications subject to change through product improvement and innovation.

3

This appliance
should be
thoroughly

cleaned prior to use.
See the CLEANING

INSTRUCTIONS, on page 8
of this manual.

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 DAM-

AGE CLAIM PROCEDURE

below.

UNPACKING AND INSPECTION

1. Remove the cabinet from ship ping carton, ensuring that all packing ma­terials and protective plastic has been removed from the unit. Inspect all
components for completeness and condition.

2. If any freight damage is present, a freight claim must be filed imme diately
with the shipping company.

3. Freight damage is not covered under warranty.

4. Check to insure all com ponents are included; cabinet, product caddy,
instruction packet and any additional accessories.

5. Read operation instructions compl etel y.

6. Appliance should b e thoroughly cleaned before use. See CLEANING
INSTRUCTIONS, page eight.

7.

Connect power cord to grounded and properly wired electrical source as
specified. Electrical specifications are indicated on the serial tag on the
cabinet (see sample tag below).

Serial Number — Manufacture Date

Model Number

Electrical Specifications

FREIGHT DAMAGE PROCEDURE

NOTE: For your protection, please note that equipment in this shipment was carefully ins pected and pa ckaged

by skilled personnel before leaving the factory. Upo n acceptance of this shipment, the t ransportation 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
immediately.

3. CONCEALED DAMAGE: If damage is unnoticed unti l 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 con-
tainer 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.

: Regardless of the extent of damage. Contact your dealer

4

INSTALLATION & START-UP

Installation procedures must be

WARNING:

Risk of personal injury

performed by a qualified technician
with full knowledge of all applicable
electrical codes.

Failure can result in personal injury
and property damage.

IMPORTANT:

Power cord is 10' long.

If necessary, contact a
licensed electrician to install an ap­propriate electrical circuit with cor­rect receptacle.

DO NOT use an extension cord.

CAUTION:

Electrical Shock Hazard

The ground prong of the power cord
is part of a system designed to pro­tect you from electric shock in the
event of internal damage.

DO NOT cut off the large round
ground prong or twist a blade to fit
an existing receptacle.

IMPORTANT:
Not under warranty:

Damage to unit due to being
connected to the wrong voltage or
phase is NOT covered by warranty.

CAUTION:

Risk of personal injury

Unit is not waterproof, to avoid
electrical shock keep unit and
counter from being submerged in
water. Do not operate if unit has
been submerged in water.

Location

For proper operation and maximum performance, locate the cabinet
in an ambient air temperature of 70º F (21ºC).

Avoid areas near exhaust fans where there is active air movement.
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.

To prevent electrical shock, be sure unit is unplugged from an elec­trical outlet. If unit has been operated, allow unit to cool before in­stalling.

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 serviceman if

the grounding instructions are not completely understood, or if doubt
exists as to whether the appliance is properly grounded.

Start-up

1. Plug the cabinet into a properly grounded electrical receptacle.

2. Ensure all plastic and packaging materials have been removed.

3. Set POWER switch to “ON” position.

4. Do not load product into the cabi net. Allow the heat to remove
any residual oils which may adhere to inside metal surfaces. A
slight emission of smoke is normal for the first few hours of
operation.

5. Appliance is pr eset at the factory. However, the temperature is
adjustable. See page 7 for programming instructions.

5

NORMAL OPERATION

CAUTION:
HOT SURFACE

Inner surfaces of the unit
will be very hot during and
after operation. Avoid
touching the cabinet when
loading or removing
product.

Temperature

Set Button

Alarm Reset

Button

CONTROLLER

165

1. The power s witch is located at the base of the cabinet, underneath the
door. Turn the power switch ON. Preheat cabinet for 30 minutes. When
the cabinet is turned on, the air heater will operate until the cabinet
reaches the air temperature setpoint. The display will read the actual
cabinet temperature. The heat “ON” light will illuminate when the cabi­net temperature is below the air temperature setpoint. The temperature
display will flash alternately “LO” and the actual cabinet air temperature
until it reaches the low temperature alarm setpoint.

2. After preheat, load cooked, boxed pies (or ot her hand-held items) into
the cabinet.

NOTE: The interior Product Caddy has a reserve storage area, separated
by wires in the upper portion of the caddy. This reserve area is intended to
provide additional product while a new batch is being cooked. Holes b e­neath the door provide visual indication of low product level in the cabi net.

3. Cabinet dispen s es items from the bottom, un derneath the door. Simply
grasp the item and pull out.

4. When cabinet is not in use, turn power off.

NOTE: This cabinet must be cleaned daily. Instructions can be found on
page 8.

Temperature
Display

Heat “ON”

Light

Up/Down Arrow
Buttons

Power
Switch

Controller

Location

MDPM2 MDPM4

Reserve

Storage

Area

Product

Caddy

6

CONTROLLER PROGRAMMING

CAUTION:
HOT SURFACE

Inner surfaces of the unit
will be very hot during and
after operation. Avoid
touching the cabinet when
loading or removing
product.

CHEF’S TIP:

Recommended holding
temperature for baked pies
is 165°F (74°C) and 155°F
(69°C) for fried pies.

Temperature

Set Button

Alarm Reset

Button

The controller has been factory pre-set for a holding temperature of 165°F
(74°C) and a low temperature alarm of 140°F (60°C). In most cases, the
temperature will not need to be changed. However, if changes are neces­sary, the controller is programmable.

To View or Change the Temperature Setpoint:

Turn the power on. To view the temperature setpoint, press and hold the
temperature set button. To change the temperature setpoint, press and hold
the temperature set button and press the up or down arrow button until the
desired air temperature is displayed. The display will advance in 1° incre­ments.

To View or Change the Low Temperature Alarm Setpoint:

Turn the power on. To view the alarm setpoint, press and hold the alarm
reset button. To change the alarm setpoint, press and hold the alarm reset
button and press the up or down arrow button until the desired alarm tem­perature is displayed. The display will advance in 1° increments.

To View or Change Temperature Scale:

The cabinet is programmable for a temperature scale in degrees Fahrenheit
and Centigrade (Celsius). Turn power off. Press and hold down both arrow
buttons. While holding both arrow buttons, turn power back on. The display
will show the current scale (C or F). If desired, push the up or down arrow
button to change the scale. Turn power off to save the change.

NOTE: Controller temperature maximum allowable setting is 225°F (108°C).

Heat “ON”

Light

CONTROLLER

165

7

Temperature Display

Up/Down Arrow Buttons

CLEANING PROCEDURES

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.

CAUTION:

Beware of sharp
edges on sheet

metal during cleaning.

1. After all food products have be en removed from the cabinet, turn the
power switch to “OFF” and allow the cabinet to cool. Unplug cabinet.

2. Remove the interior pr oduct caddy from the cabinet.

3. Wipe cabinet and ins ide surface of warming cavity with a clean towel
moistened with cleaning solution (see Recommended Tips belo w).
Take care not to get moisture into any vents, internal controls or elec­trical components.

4. Rinse by wiping with a clean towel moistened with clean water. Allow
to air dry.

5. Clean product cadd y with a mild detergent. Rinse and allow to air dry.
(The caddy may be run through a commercial dishwasher)

6. Inspect and clean the areas where there are vents, making sure no
water gets into the internal controls or electrical areas of the cabinet.

7. Reconnect power cord to properly grounded electrical receptacle.

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, erup-

CAUTION

tions, voids, small holes, severe discoloration or dulling of the metal finish. Water with high chlo­ride content can also damage stainless steel. If unsure of your water quality, we recommend you

have it tested. THIS DAMAGE IS PERMANENT, COSTLY TO REPAIR, AND IS NOT COVERED BY
THE WARRANTY.

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 water and wipe dry.

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.

8

MAINTENANCE PROCEDURES

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.

CAUTION:

Beware of sharp
edges on sheet

metal during cleaning.

Temperature Verification (semi-annually or as needed)

Note: The cabinet may be empty or full to conduct this procedure.

1. Ensure that the cabinet has been turned on a nd has been in opera­tion for at least 30 minutes.

2. Clip an oven probe to the Product Caddy where the wires intersect.
Close door.

3. After the oven probe has been in place for at lease five minutes, com­pare the digital thermometer temperature to the controller tempera­ture.

NOTE: The measured temperature must reflect the controller display
within +/- 1 0°F (6°C).

4. The temperature verification i s complete. If the cabinet does not pass
the verification test, turn the power switch to OFF and do not use the
cabinet. Contact Carter-Hoffmann technical service at 800-323-9793
or 847-362-5500.

Changing the Illuminated Front Graphic on Door (as needed)

NOTE: You will need a Phillips screwdriver to perform this procedure.

1. Remove the four screws on the sides of the door and remov e the
door trim.

2. Slide the POP graphic out; then slide the new POP graphic in, mak­ing sure to leave the white diffuser background panel in place.

3. Replace the door trim and sec ure with screws.

Changing the Light Bulb in the Door (as needed)

NOTE: You will need a Phillips screwdriver to perform this procedure.

The POP graphic on the front door is illuminated by one fluorescent bulb.
If the bulb burns out, turn off the cabinet. Remove the four screws on the
sides of the door and remove door trim. Replace the burned out bulb, re­place the door trim, and secure with screws. Turn the power switch on.

NOTE: Lamp contains mercury. Manage in accordance with disposal
laws.

9

WIRING DIAGRAMS

10

PARTS IDENTIFICATION

11

PARTS LIST

Cabinet Type

Part

Number

18614-0338 FAN MOTOR 110-120 volt X X X
18614-0339 FAN MOTOR 200-208 volt X X

18614-0340* FAN MOTOR 220-240 volt X X

16090-2235 MONITOR / MOTOR SHEILD KIT X X X X X X X
18603-5090 FAN BLADE X X X X X X
18612-0221 HEAT ELEMENT 110-120v X X X

18612-0222* HEAT ELEMENT 200-240v X X X X

18602-0055 ON/OFF SWITCH 110-120v X X X
18602-0075* ON/OFF SWITCH 200-240v X X X X
18600-0049*
18600-0062*

18606-0010 POWER CORD HSJO 16/2 w/PLUG X X X
18605-0200* POWER CORD 200-240v X X X X

18614-0322 COOLING FAN 120v X X X
18614-0323* COOLING FAN 208-240v X X X X

18616-0135 TRANSFORMER 110-120v X X X
18616-0131* TRANSFORMER 200-240v X X X X

16090-2332 RELAY RETROFIT KIT

18616-0223* HEAT RELAY X X X X X X X

18616-0147 LIGHT BULB SOCKET 110-120v X X X

18616-0185 LIGHT BULB SOCKET 200-208v X X
18616-0252* LIGHT BULB SOCKET 220-240v X X

18616-0146 LIGHT BULB 110-120v X X X

18616-0189 LIGHT BULB 200-208v X X
18616-0208* LIGHT BULB 220-240v X X

18616-0197 LIGHT BULB BALLAST 110-208v X X X X X
18616-0144* LIGHT BULB BALLAST 220-240v X X
18616-0198* AIR TEMPERATURE PROBE X X X X X X X

18616-0207 CONTROLLER BOARD X X X X X X X
18616-0229* CONTROLLER X X

18312-0189 CONTROL OVERLAY X X X X X X X

18302-0086 MEDIUM SNAP-IN MAGNET X X X X X X X

16502-8327 DOOR STRIKE X X X X X X X

29037-9003 MDPM4 PLASTIC WHITE DIFFUSER X X X

29037-9008 MDPM2 PLASTIC WHITE DIFFUSER X X X X

Contact Factory PIE CADDY ASSEMBLY X X X X X X X

16090-2462 TOP HINGE ASSEMBLY X X X X X X X

16502-8542 BOTTOM HINGE ASSEMBLY X X X X X X X

16502-8539 DOOR TRIM MDPM4 X X X

*WEEE Parts

(relay, bracket & screws; units produced before 2003)

Part Description

HI LIMIT SNAPDISC 155°F (68°C)

HI LIMIT SNAP DISC 243°F (115°C)

US MDPM2

110-120v

X X X X X X X
X X X X X X X

X X X X X X X

US MDPM4

110-120v

Intl MDPM2

110-120v

Intl. MDPM4

200-208v

Intl. MDPM2

200-208v

Intl MDPM2

220-240v

Intl MDPM4

220-240v

12

TROUBLESHOOTING GUIDE

SYMPTOM DISPLAY READS PROBABLE CAUSE CORRECTIVE ACTION

NO POWER

NO HEAT / LOW TEMP

CONTROLLER LED’s

Blank Faulty circuit breaker tripped Reset circuit breaker

Input cable to controller unplugged Plug in power cable

Faulty transformer Replace

Faulty controller Replace

Faulty ON/OFF switch Replace

Faulty wiring Follow wiring per diagram

Ambient air temperature Hi Limit faulty or tripped Reset/Replace

Faulty heat element Replace

Faulty relay Replace
Faulty air probe Replace
Faulty controller Replace

LED segments are out /

Loose wiring Follow wiring per diagram

dim

Faulty controller Replace

CONTROLLER READS

Actual error code Faulty probe connection Check wiring

ERROR CODE

PRODUCT NOT HOT

Normal

ENOUGH

FUNCTION KEY DOES

Normal Faulty controller Replace

NOT OPERATE

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.

Faulty probe Replace probe

Faulty controller Replace

Wrong setting or menu being used Correct temperature setting

Temperature out of calibration Perform temperature verifi-

cation test (page 9)

Product is not at proper serving

temperature prior to being placed in

cabinet

NOTE:

For warranty service, call Carter-Hoffmann direct at
800-323-9793 for authorization, we will dispatch the
nearest authorized service agency.

Cook product to proper

temperature prior to placing

in cabinet

13

WARRANTY STATEMENT

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 warran ty
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 man ifests itself du ring th e war­ranty period under normal use and service.

This warranty applies only to original equipment owned and possessed by the 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; to refrigeration compressor unit for
one year (limited to replacement only - not to include labor for removal, repa ir or replacement).

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 products other than that covered in this wa r­ranty. 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 purpos e is hereby specifically dis-

claimed by CARTER-HOFFMANN. There are no warranties, expressed or implied, which extend be-

yond 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 subject to change through product improvement and innovation.

Carter-Hoffmann, LLC

1551 McCormick Ave.

Phone: [phone] ● Toll free ( USA and Canada): 800-323-9793

Sales & Marketing E-mail: [e-mail] ● Service E-mail: [e-mail]

Company Website: www.carter-hoffmann.com

Mundelein, IL 60060

Fax: [phone]

12