Hussmann MD-14, MD-10 Installation & Operation Manual

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Page 1

Medium Temperature

Self Contained Open Vertical

Merchandisers

MD-10

IMPORTANT

Keep in store for future reference!

MANUAL - I/O SELF CONTAINED MD

MD-14

Installation &

Operation Manual

P/N 2402646_H

June 2018

Spanish 0531297

French 0531298

Page 2

Page 3

P/N 2402646_H iii

Merchandiser must operate for 24 hours before loading product!

Regularly check merchandiser temperatures.

Do not break the cold chain. Keep products in cooler before loading into merchandiser.

These merchandisers are designed for pre-chilled products only.

IMPORTANT

KEEP IN STORE FOR FUTURE REFERENCE

Quality that sets industry standards!

12999 St. Charles Rock Road • Bridgeton, MO 63044-2483

U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900

www.hussmann.com

Page 4

Page 5

TABLE OF CONTENTS v

ANSI DEFINITIONS ................. vi

INSTALLATION

UL Listing ......................... 1-1

Federal & State Regulation ........... 1-1

Hussmann Product Control ........... 1-1

Shipping Damage ................... 1-1

Location ........................... 1-1

Self Contained (Location) ............. 1-2

Model Description .................. 1-3

Unloading ......................... 1-3

Exterior Loading .................... 1-3

Shipping Skid ...................... 1-3

Merchandiser Leveling ............... 1-4

Serial Plate Location ................. 1-4

Refrigeration Unit Access ............. 1-4

Sealing Merchandiser to Floor ......... 1-4

ELECTRICAL / REFRIGERATION

Merchandiser Electrical Data .......... 2-1

Field Wiring ........................ 2-1

Electrical Connections . . . . . . . . . . . . . . . . 2-1

Electrical Outlet ..................... 2-1

Power Switch ....................... 2-1

Refrigeration (Self Contained Models) .. 2-2

Water Outlet and Water Seal .......... 2-2

Stocking .......................... 3-11

Thermometer ...................... 3-12

Lighting .......................... 3-12

Night Cover ....................... 3-12

MAINTENANCE

Care and Cleaning ................... 4-1

Do NOT Use: ...................... 4-1

Do: ............................... 4-1

Cleaning Under Fan Plenum .......... 4-2

Cleaning Stainless Steel Surfaces ....... 4-2

Cleaning Coils ...................... 4-3

Cleaning Evaporation Pan ............ 4-4

Removing Scratches from Bumper ...... 4-4

SERVICE

Replacing Fan Motors and Blades ...... 5-1

Replacing Electronic Ballasts/LED Power

Supplies ........................... 5-2

Replacing Fluorescent Lamps ......... 5-2

Replacing LED Fixture ............... 5-2

START UP / OPERATION MD-10 & MD-14

Controller Operation ................. 3-1

Connections ........................ 3-4

LED .............................. 3-5

KDEPlus Buttons ................... 3-6

Setpoint: Setting and Edit Lock ........ 3-7

Display Probes Value ................. 3-7

Key-Activated Functions .............. 3-7

Typical Sensor to Control Configurations 3-8

Controls and Adjustments ........... 3-10

Shelves ........................... 3-11

Load Limits ....................... 3-11

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

TECHNICAL DATA

Part Numbers ...................... A-1

Plan View - MD ................... A-3

Cross Section ...................... A-4

Refrigeration/Defrost/Physical Data .....A-4

Electrical/Product Data ...............A-5

MD-10 Wiring Diagram ............. A-6

MD-14 Wiring Diagram ............. A-7

WARRANTY

MD Open Vertical Merchandisers

Page 6

REVISION HISTORY

REVISION H —

1. Page 3-8 & 3-9 Removed marker colors

REVISION G —

1. Page 1-4-Replaced controller display picture

-Replace Safenet display & cable picture

2. Page 3-1 to 3-5-Removed Safenet III information

3. Page 3-6-Change sensor colors Yellow to Orange and Black to Green

-Replaced Sensors to control connections picture

4. Page 3-7-Changes sensor color Yellow to Orange

-Replaced Sensors to control connections picture

5. Page 3-8-Replaced SafeNet III-Remove selected picture

6. Page A-1-Removed selected parts from table and parts

7. Page A-6 & A-7-Replace diagrams with new revisions attached

ORIGINAL ISSUE — AUGUST 2005

* * * * * * * * * * * * * * * * * * * * * * * * * * ANSI Z535.5 DEFINITIONS

• DANGER – Indicate[s] a hazardous

situation which, if not avoided, will result in death or serious injury.

• WARNING – Indicate[s] a hazardous situation which, if not avoided, could result in death or serious injury.

• CAUTION – Indicate[s] a hazardous situation which, if not avoided, could result in minor or moderate injury.

• NOTICE – Not related to personal injury – Indicates[s] situations, which if not avoided, could result in damage to equipment.

P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com

Page 7

P/N 2402646_H 1-1

INSTALLATION

UL LISTING

These merchandisers are manufactured to meet ANSI/ UL 471 standard requirements for safety. Proper installation is required to maintain the listing.

FEDERAL / STATE REGULATION

These merchandisers at the time they are manufactured, meet all federal and state/ provincial regulations. Proper installation is required to ensure these standards are maintained. Near

the serial plate, each merchandiser carries a label identifying the environment for which the merchandiser was designed for use. A Type II fan speed control kit is required for each merchandiser to operate at Type II conditions.

ANSI/NSF-7 Type I – Display Refrigerator /

Freezer

Intended for 75°F (24°C) / 55%RH Ambient Application

inspected at our factory. Any claim for loss or damage must be made to the carrier. The carrier will provide any necessary inspection reports and/or claim forms.

Apparent Loss or Damage

If there is an obvious loss or damage, it must be noted on the freight bill or express receipt and signed by the carrier’s agent; otherwise, carrier may refuse claim.

Concealed Loss or Damage

When loss or damage is not apparent until after equipment is uncrated, retain all packing materials and submit a written response to the carrier for inspection within 15 days.

ANSI/NSF-7 Type II – Display Refrigerator / Freezer

Intended for 80°F / 55%RH Ambient Application

ANSI/NSF-7 – Display Refrigerator

Intended for Bulk Produce

HUSSMANN PRODUCT CONTROL

The serial number and shipping date of all equipment is recorded in Hussmann’s files for warranty and replacement part purposes. All correspondence pertaining to warranty or parts ordering must include the serial number of each piece of equipment involved. This is to ensure the customer is provided with the correct parts.

SHIPPING DAMAGE

All equipment should be thoroughly examined for shipping damage before and during unloading. This equipment has been carefully

Recommended operating ambient

temperature is between

65°F (18°C) to 75°F (23.9°C).

Maximum relative humidity is 55%.

LOCATION

These merchandisers are designed for displaying products in air conditioned stores where temperature is maintained at or below the ANSI / NSF-7 specified level and relative humidity is maintained at or below 55%. Placing refrigerated merchandisers in direct sunlight, near hot tables or near other heat sources could impair their efficiency. Like other merchandisers, these merchandisers are sensitive to air disturbances. Air currents passing around merchandisers will seriously impair their operation. Do NOT allow air conditioning, electric fans, open doors or windows, etc. to create air currents around the merchandiser.

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

MD Open Vertical Merchandisers

Page 8

1-2 InstallatIon

SELF CONTAINED (LOCATION)

Product should always be maintained at proper temperature. This means that from the time the product is received, through storage, preparation and display, the temperature of the product must be controlled to maximize the life of the product.

Be sure to position self contained

merchandisers properly.

SELF CONTAINED models have vented base panels to allow air circulation through the condensing unit.

Allow for a minimum 5 in. clearance from walls, merchandisers, and any other large objects near the merchandiser’s vented base panels (for self contained models). Blocking or restricting air flow will adversely affect performance and may damage the refrigeration system.

For California Businesses:

This product may contain chemicals known

to the State of California to cause cancer, birth defects, or other reproductive harm.

This warning is the result of the California State law known as the California Safe Drinking Water and Toxic Enforcement Act of 1986, which is commonly referred to as “Proposition 65.”

This warning does not mean that Hussmann products will cause cancer or reproductive harm, or is in violation of any product-safety standards or requirements. As claried by the California State government, Proposition 65 can be considered more of a ‘right to know’ law than a pure product safety law. When used as designed, Hussmann believes that our products are not harmful. We provide the Proposition 65 warning to stay in compliance with California State law. It is your responsibility to provide accurate Proposition 65 warning labels to your customers when necessary. For more information on Proposition 65, please visit the California State government website.

P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com

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P/N 2402646_H 1-3

MODEL DESCRIPTION

The MD models are open, vertical, medium temperature display merchandisers. They are self contained merchandisers with their own condensing unit. Each self contained model has a condensing unit that is factory installed beneath the display area of the case. The unit is ready for operation when electrical service is connected.

Do not store items or ammable materials

atop the unit.

UNLOADING

Unloading from Trailer:

Lever Bar (also known as a Mule, Johnson Bar, J-bar, Lever Dolly, or Pry Lever)

Move the merchandiser as close as possible to its permanent location and remove all packaging. Check for damage before discarding packaging. Remove all separately packed accessories such as kits and shelves.

Improper handling may cause damage to the merchandiser when unloading. To avoid damage:

EXTERIOR LOADING

Do NOT walk on top of merchandisers or

damage to the merchandisers and serious personal injury could occur.

merchandisers are not structurally designed to support excessive external loading such as the weight of a person. Do

not place heavy objects on the merchandiser.

SHIPPING SKID

Each merchandiser is shipped on a skid to protect the merchandiser’s base, and to make positioning the case easier.

Remove the top of the crate and detach walls from each other. Lift crate from the skid. Unscrew the case from the skid. The fixture can now be lifted off the crate skid. Lift only at base of skid! Remove any braces and/or skids attached (blanket wrapped merchandiser may have skids).

DO NOT TILT MERCHANDISER ON ITS SIDE OR END WHEN REMOVING SKID.

Once the skid is removed, the merchandiser must be lifted —NOT PUSHED— to reposition. To remove the skid, remove screws attaching skid to the merchandiser.

1. Do not drag the merchandiser out of the trailer. Use a Johnson bar (mule).

2. Use a forklift or dolly to remove the merchandiser from the trailer.

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

Check floor where cases are to be set to see if it is a level area. Determine the highest part of the floor.

Do NOT remove shipping crate until the

merchandiser is positioned

for installation.

MD Open Vertical Merchandisers

Page 10

1-4 InstallatIon

MERCHANDISER LEVELING

Be sure to position merchandisers proper-

ly. Level the merchandiser by all four corners.

Merchandiser(s) must be installed level to ensure proper operation of the refrigeration system, and to ensure proper drainage of defrost water.

SERIAL PLATE LOCATION

The serial plate is located at the interior top left end. It contains all pertinent information such as model, serial number, amperage rating, refrigerant type and charge.

Serial Plate

REFRIGERATION UNIT ACCESS

The lower front panel may be removed by lifting the panel straight upward and over the tabs on which it is hanging. In a self contained merchandiser, two screws will have to be removed from either end of the panel. The panel is installed by reversing the above procedure. Ensure lower front panel is flat against the floor when installed to prevent air circulation problems on self contained merchandisers.

Lift up and out to remove

Display

access panel

Be careful not to detach cable from display when removing access panel.

Controller (Rear)

SEALING MERCHANDISER TO FLOOR

If required by local sanitary codes, or if the customer desires, merchandisers may be sealed to the floor using a vinyl cove base trim. The size needed will depend on how much variation there is in the floor, from one end of the merchandiser to the other. Sealing of the lower front and rear panels on self contained models may hamper their removal for servicing or maintenance of the condensing unit.

NOTE: Do not allow trim to cover any intake or discharge grilles located in the lower front panel.

P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com

Page 11

P/N 2402646_H 2-1

ELECTRICAL / REFRIGERATION

MERCHANDISER ELECTRICAL DATA

Refer to merchandiser serial plate for electrical information.

FIELD WIRING

Field wiring must be sized for component amperes stamped on the serial plate. Actual ampere draw may be less than specified.

To avoid serious injury or death from electrical shock, always disconnect the electrical power at the main disconnect when servicing or replacing any electrical component. This includes, but is not limited to, such items as doors, lights, fans, heaters, and thermostats.

— LOCK OUT / TAG OUT —

ALWAYS CHECK THE SERIAL PLATE FOR

COMPONENT AMPERES

ELECTRICAL CONNECTIONS

All wiring must be in compliance with NEC and local codes. Self contained models are electrical cord connected at the electrical box.

ELECTRICAL OUTLET:

Before the merchandiser is connected to any wall circuit, use a voltmeter to check that the outlet is at 100% of the rated voltage. The wall circuit must be dedicated for the merchandiser. Failure to do so voids the warranty. Do not use an extension cord. Never plug in more than one merchandiser per electrical circuit.

Self-contained models have factory-installed power cords attached at the electrical box.

NEMA 6-15P

Receptacle

POWER SWITCH

The main power switch is located in the electrical box. This switch controls all power to the case. This switch must be in the OFF position, and the electrical cord must be unplugged before starting any cleaning or service work.

• Always use a dedicated circuit with the amperage stated on the unit.

• Plug into an outlet designed for the plug.

• Do not overload the circuit

• Do not use long or thin extension cords. Never use adapters.

• If in doubt, call an electrician.

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

Risk of Electric Shock. If cord or plug becomes damaged, replace only with a cord and plug of

the same type.

Merchandiser must be grounded.

Do not remove the power supply cord ground.

MD Open Vertical Merchandisers

Page 12

2-2 ElEctrIcal / rEfrIgEratIon

REFRIGERATION (Self Contained Models)

Each self contained model is equipped with its own condensing unit and control panel located beneath the display area. The correct type of refrigerant will be stamped on each merchandiser’s serial plate. The merchandiser refrigeration piping is leak tested. The unit is charged with refrigerant, and shipped from the factory with all service valves open.

Refrigeration lines are under pressure.

Refrigerant must be recovered before

attempting any connection or repair.

WATER OUTLET AND WATER SEAL

The condensate water outlet is located at the front corners of the evaporator coil area. The outlet has a factory installed, external water seal.

For self contained models, this water seal drains into the condensate evaporator pan located beneath the merchandiser.

NOTE: All lower base panels must be in place when the refrigerator is operating. If not, airflow from the condenser will be directed over the evaporator pan and defrost water in the pan may overflow.

When brazing pipes, be sure to use the

insulation blanket shipped with the

merchandiser to prevent damage to the

metal merchandiser bottom.

Product will be degraded and may spoil if

allowed to sit in a non-refrigerated area.

P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com

Page 13

P/N 2402646_H 3-1

START UP / OPERATION MD-10 & MD-14

CONTROLLER OPERATION

The electronic controller is located in the cassette compartment. The controller comes factory set, and is ready for use. The front grille must be removed in order to access this control. When removing the grille for this operation or for condenser cleaning, care must be taken not to damage the display interface cable. It may be unplugged during this task.

1. Plug the merchandiser plug into its receptacle.

a. The controller display will illuminate. b. The interior light will illuminate.

2. After the control preprogrammed time delay of up to 6 minutes, the compressor and evaporator fan(s) will start if the control is calling for cooling.

3. The control will cycle the compressor but may also cycle evaporator fan(s) on and off determined by the Set-Point and Differential temperatures.

This cabinet temperature may reect the refrigeration cycle of the Set-Point and it’s Differential. The most accurate temperature on a cabinets operation is to verify the product temperature.

Taking as an example a VRL case, freezer, If the Set-Point is -12°F and the Differential is 9°F. (Set-Point) -12°F + 9 (Differential) = -3°F. The compressor and evaporator fan(s) will cycle off -12°F and back on at -3°F.

Main Features:

• Panel-mounted

• Energy saving algorithms and optimised defrost control

• 8 preloaded applications

• Defrost at single / double evaporator

• Frame Heater

• Local network auto-conguration

a. The Set-Point is the adjustable preprogrammed temperature. b. The Differential is the non-adjustable preprogrammed temperature. c. The Control is designed to read and display a cabinet temperature not a product temperature.

KDEPLUS BUTTONS

The KDEPlus keyboard has 4 keys, as shown in the illustration:

DOWN SET

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

• Direct load connection (up to 2 HP)

• Supply voltage control LVD

• Presence of an open collector output

STANDBY or ESC

MD Open Vertical Merchandisers

Page 14

3-2 startup / opEratIon

2 - SPECIFICATIONS

TECHNICAL DATA

Key Functions:

• 2 ON/OFF regulators for HOT/COLD

• Single defrost and double evaporator (heatings,

modulated heaters, reverse cycle, hot gas)

• Evaporator fans and condenser fans

• Frame Heater

• AUX

• Light

• Door switch

• ON /OFF

• Deep cooling cycle

• Day / Night

• Diagnostics

• “Easy Map” programming

• Programmable inputs/outputs

• LINK2 local area network

• RS485 communication protocol: Modbus

• Compatible with Device Manager (DM)

• Compatible with Unicard and Multi-function key

Classification: electronic automatic control (not safety) device for incorporation Mounting: panel mounting Type of action: 1.B Pollution class: 2 Material class: IIIa Overvoltage category: II Nominal pulse voltage: 2500V Temperature: Use: –5 … +55°C - Storage: -30 … +85°C Power supply: SMPS 100-240Va ±10% 50/60 Hz Power consumption: 5.5W max Fire resistance category: D Software class: A RTC battery life: In absence of external power, the clock battery will last 3 years.

P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com

Page 15

P/N 2402646_H 3-3

2 - SPECIFICATIONS

TECHNICAL DATA

: The technical specifications stated in this document regarding measurement (range, accuracy, resolution, etc.) refer to

FURTHER INFORMATION

INPUT CHARACTERISTICS

Measurement range: NTC: -50.0°C ... +110°C; PTC: -55.0°C ... +150°C; PT1000: -60.0°C ... +150°C

(on 3-digit display with +/- sign)

Accuracy: ±1.0° for temperatures below -30°C

±0.5° for temperatures between -30°C and +25°C

±1.0° for temperatures above +25°C Resolution: 1 or 0.1°C Buzzer: NO Analogue/Digital Inputs: 5 configurable NTC/PTC/PT1000/DI inputs

1 multi-function, voltage-free digital input (D.I.)

OUTPUT CHARACTERISTICS

Digital Outputs: OUT1: 1 SPST relay: 2HP

OUT2: 1 SPDT relay: 1HP

OUT3: 1 SPDT relay: 8(4)A

OUT4: 1 SPST relay: 8(4)A

OC (Open Collector) Output: OC: 1 multifunctional output:

max 240V max 250V max 250V max 250V

c 20mA

12V

MECHANICAL CHARACTERISTICS

Dimensions: 121x92 mm Terminals: faston and screw for wires with cross-section of 2.5mm

Connectors: Humidity:

TTL for Unicard / Device Manager connection (via DMI)

Usage / Storage: 10...90% RH (non-condensing)

a a a a

REGULATIONS

Electromagnetic compatibility: The device complies with Directive 2004/108/EC Safety: The device complies with Directive 2006/95/EC Food Safety: The device complies with standard EN13485 as follows:

• Suitable for storage.

• Application: air.

• Climate range A

• measurement class 1 in the range from -25°C to 15°C (*)

(* with Eliwell probes only)

NOTE

the instrument alone and not to any accessories provided, such as the probes. This means, for example, that the error introduced by the probe must be added to the error of the instrument.

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

MD Open Vertical Merchandisers

Page 16

3-4 startup / opEratIon

CONNECTIONS

TERMINALS

OUT2 (1HP)

OUT3 (8A)

OUT1 (2HP)

OUT4 (8A)

15 16 17

RS485

OPTIONAL

12V

GND

LINK

{

GND D

12V

{

KEYB

* N.B.: analogue inputs PB1...PB5 can also be configured as Digital Inputs DI.

TERMINALS

1-2 NEUTRAL.

3 LINE. These are power supply terminals. 19-18 PB1 probe connection.

4 OUT2 Shared Terminal 21-20 PB2 probe connection.

5 N.O. OUT2 23-22 PB3 probe connection.

6 N.C. OUT2 23-24 PB4 probe connection.

7 OUT3 Shared Terminal 23-25 PB5 probe connection.

8 N.C. OUT3 27-26 Digital input (DI).

9 N.O. OUT3 28-29 LINK

10 OUT1 Shared Terminal 30-31 LINK

11 N.O. OUT1 32-33 Open Collector Output (OC).

12 Not Used A TTL Unicard/DMI/Multi Function Key connection

13 OUT4 Shared Terminal 34-35-36 RS485. Connection 1 - Supervision Gateway.

14 N.O. OUT4 37-38-39 RS485. Connection 2 - Supervision Gateway.

These are power supply terminals. 15-16-17

34 35 36 37 38 39

Connection to KDEPlus or KDWPlus external keyboard or ECPlus echo module.

. Connection 1 - local area network.

. Connection 2 - local area network.

ELIWELL

P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com

Page 17

P/N 2402646_H 3-5

LED

RTN400 family controllers will also function even if a keyboard has not been connected. With KDEPlus or KDWPlus keyboards (which are the same and guarantee the same functions), the display will be as follows:

Meaning of LEDs:

No Icon LED Operation Meaning

Permanently on compressor on

Compressor

Defrost

Fans

Blinking Delay, protection or start-up blocked

OFF otherwise

Permanently on Defrost active

Blinking Activated manually or from Digital Input

OFF otherwise

Permanently on Fans active

OFF otherwise

Permanently on Energy Saving active

N.B.: When the instrument is powered on it performs a lamp test, during which time the display and LEDs will

Reduced SET / Economy

Alarm

°F readout

AUX

°C readout

flash for several seconds to check that they all function correctly.

Blinking Reduced setpoint active

OFF otherwise

Permanently on alarm active

Blinking Alarm acknowledged

OFF otherwise

Permanently on °F setting (dro =1)

OFF otherwise

Permanently on Aux output active and/or light on

Blinking Deep cooling on

OFF otherwise

Permanently on °C setting (dro = 0)

OFF otherwise

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

MD Open Vertical Merchandisers

Page 18

3-6 startup / opEratIon

KDEPLUS BUTTONS

The KDEPlus keyboard has 4 keys, as shown in the illustration:

DOWN SET

Each key has a different function depending on whether it is:

• Pressed and released

• Pressed for at least 5 seconds

• Pressed and held at start-up

• Pressed in combination with another key.

KEYS

The following table summarizes the function of each key:

No Key

• Scrolls through menu items

• Decreases values

• Scrolls through menu items

• Decreases values

Pressed and released Press for at least 5 secs Start-up

Activates the Manual Defrost function (from outside menus).

Function can be configured by the user (from outside menus). (see parameter H32)

Action

STANDBY or ESC

---

• Returns to the previous menu

set

level

• Confirms parameter value

• Displays any alarms (if active)

• Opens Machine Status menu

• Confirms commands

Activates the Stand-by function (from outside menus).

Opens the Programming Menu (User and Installer parameters)

---

When pressed during start-up it enables the user to select the application to be loaded.

P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com

Page 19

P/N 2402646_H 3-7

SETPOINT: SETTING AND EDIT LOCK

To display the Setpoint value, press the

set

key to enter the “Machine Status” menu, then press the

set

key again when the “SEt” label is displayed. The Setpoint value appears on the display. To change the Setpoint value, press the and keys within 15 seconds. Press

set

to confirm the modification.

set

It is possible to disable the keypad on this device. The keypad can be locked by programming the “LOC” parameter appropriately. With the keypad locked, you can still access the “Machine Status” menu by pressing

set

to display the Setpoint, but you cannot edit

it. To disable the keypad lock, repeat the locking procedure.

DISPLAY PROBES VALUE

To display the value read by probes connected to the device, press the

set

key and enter the “Machine Status” menu, then press

the key again when one of the probe-related labels “Pb1...Pb5” press the

set

key again. The value measured by the associated

probe will appear on the display.

NOTE: The displayed value is read-only and cannot be modified.

SETPOINT: SETTING AND EDIT LOCK

To display the Setpoint value, press the label is displayed. The Setpoint value appears on the display. To change the Setpoint value, press the and keys within 15 seconds. Press

to confirm the modification.

set

key to enter the “Machine Status” menu, then press the

set

to display the Setpoint, but you cannot edit

DISPLAY PROBES VALUE

To display the value read by probes connected to the device, press the the key again when one of the probe-related labels “Pb1...Pb5” press the probe will appear on the display.

NOTE: The displayed value is read-only and cannot be modified.

KDEPLUS BUTTONS

The KDEPlus keyboard has 4 keys, as shown in the illustration:

set

key and enter the “Machine Status” menu, then press

set

key again. The value measured by the associated

set

key again when the “SEt”

DOWN SET

KEY-ACTIVATED FUNCTIONS

All models have the UP key set to enable the “Manual Defrost” function. The DOWN and ESC keys can also be set to activate any other function required by the user. The parameters for configuring the two keys are:

• H11 = DOWN key configuration

• H33 = ESC key configuration

The values that can be set apply to both keys and the functions that can be activated are:

H32/H33 value Function to enable

0 disabled 1 defrost 2 reduced set 3 Light 4 Energy saving 5 AUX 6 Stand-by 7 Deep cooling cycle 8 Start/end defrost

STANDBY or ESC

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

MD Open Vertical Merchandisers

Page 20

3-8 startup / opEratIon

MD-10

Evaporator Sensor

Orange

Defrost Termination Sensor Location

1 23

NEUTRO

LINE

OUT2

789

OUT3

OUT1

11 12

OUT4

Orange

Evaporator Sensor Defrost Termination Sensor Location

OUT3

OUT1

OUT4

OUT2

MAX.

GND

15 cm.

KEYB

RTN400 SM

TTL

12V

RS-485 MODULE

OPTIONAL

12V

GND

33 32

262728293031 25

222324 21

1 92 0 18

PB2

PB1

SENSOR TE MP

DEF ROST

ORANG E

SENSO R TEMP

GRE EN

AIR

Green

Control Air Sensor

P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com

Page 21

P/N 2402646_H 3-9

MD-14

4 56

789

10 11 12

13 14

NEUTRO NEUTRO

LINE

OUT2

OUT3

OUT1

OUT4

OUT3

OUT1

OUT4

OUT2

MAX.

GND

15 cm.

RTN400 SM

TTL

12V

RS-485 MODULE OPTIONAL

12V

GND

33 32

262728293031 25

222324 21

1 92 0 18

1 23

KEYB

ISOMETRIC

Orange

Evaporator Sensor Defrost Termination Sensor Location

PB2

PB1

SENSOR TE MP

DEF ROST

ORANG E

SENSOR TE MP

GRE EN

AIR

9.437

DETAIL B

18.000

DETAIL C

SECTION A-A

DETAIL D

SECTION B-B

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

0522934 B

MD Open Vertical Merchandisers

Page 22

3-10 startup / opEratIon

1. The controller controls refrigeration temperature. This is factory installed in the control panel mounted on the merchandiser’s fascia. Measure discharge air temperatures at the center of the louvers.

...ATTENTION

INSTALLER

It is the contractor’s responsibility to

install merchandiser(s) in accordance with

all local building and health codes.

Defrosts are time initiated and temperature terminated for self contained models. The defrost setting is factory set as shown above.

— LOCK OUT / TAG OUT — To avoid serious injury or death from electrical shock, always disconnect the electrical power at the main disconnect when servicing or replacing any electrical component. This includes, but is not limited to, such items as doors, lights, fans, heaters, and thermostats.

Rear of Controller

P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com

Page 23

P/N 2402646_H 3-11

SHELVES

MD models are equipped with four shelves. Heights are adjustable in one-inch increments. Product shelves should be loaded so that the product does not extend over the front edge of the shelf. Product loaded over the edge will interfere with air circulation in the cabinet. It is also desirable to leave a small space between the rear interior wall and the product on the shelves, to allow air to enter the cabinet interior through the perforations in the rear wall. The shelves are rated for 130 pounds each load

capacity.

Install the shelf support brackets first to the desired height before installing each shelf. Place the rear of the bracket in the desired slot. Raise the front of the brackets towards the rear of the cabinet. Once the ends are in the slot, rotate the bracket forward, locking it in place. Place the shelf on the bracket. The

shelves are not to be slanted. They must remain in the horizontal position.

STOCKING

Product should NOT be placed inside the merchandisers until merchandisers are at proper operating temperature.

Allow merchandiser 24 hours to operate before loading product.

Proper rotation of product during stocking is necessary to prevent product loss. Always bring the oldest product to the front and set the newest to the back.

Air dischArge And return flues must

remAin open And free of obstruction At All times to provide proper refrigeration and

air curtain performance. Do not allow product, packages, signs, etc. to block these grilles. Do not use non-approved shelving, baskets, display racks, or any accessory that could hamper air curtain performance.

LOAD LIMITS

Each merchandiser has a load limit decal. Shelf life of perishables will be short if load limit is violated.

LOAD LIMIT

At no time should merchAndisers be

stocked beyond the loAd limits indicAted.

do not block dischArge Air

louvers.

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

MD Open Vertical Merchandisers

Page 24

3-12 startup / opEratIon

THERMOMETER

The thermometer is located next to the discharge in the middle of the merchandiser. The reading is in Cº / Fº.

LIGHTING

Interior lighting is provided by a cool, white fluorescent bulb. The bulb is sleeved to maintain proper heat around the bulb for maximum light intensity and to protect the product in case of breakage. The bulb can be replaced without removing shelves or product. To replace the bulb, twist the bulb and slide the prongs clear of the lamp holder. Remove the protective shield from the old bulb, and put it on the new bulb. Make sure the prongs on the bulb twist and lock into place when placing the bulb back in the holders.

NIGHT COVER

All MD models come equipped with a night cover as a standard feature. The handle for the cover is located near the lamp, grasp the handle and pull downward until enough of the cover has been exposed, allowing the handle to be placed over the retainer located on the lower panel. If a night cover must be replaced, follow these steps: disconnect power to the cabinet. On the top exterior of the cabinet, there is a perforated metal cover. Lower the lamp fixture as if you were replacing the ballast. Lift the left retainer. Pull the night cover towards you, and slide to left. Install the new cover in reverse order.

Optional LED lighting is offered for MD merchandisers. LEDs are held in place with clips. The protective light shield is a single piece.

Product will be degraded and may spoil if

allowed to sit in a non-refrigerated area.

Fluorescent lamps contain mercury vapor. Mercury exposure at high levels can harm the brain, heart, kidneys, lungs, and immune system of people of all ages. Do not break or puncture fluorescent lamps. Dispose of, or store, all fluorescent lamps in accordance with Federal (40 CFR 273), State, and local hazardous waste requirements. Refer to http://www.epa.gov/mercury/about.htm

P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com

Page 25

P/N 2402646_H 4-1

MAINTENANCE

CARE AND CLEANING

Long life and satisfactory performance of any equipment is dependent upon the care it receives. To ensure long life, proper sanitation and minimum maintenance costs, these merchandisers should be thoroughly cleaned, all debris removed and the interiors washed down, weekly.

Exterior Surfaces

The exterior surfaces must be cleaned with a mild detergent and warm water to protect and maintain their attractive finish.

AbrAsive cleAnsers or scouring pAds.

never use

Interior Surfaces

The interior surfaces may be cleaned with most domestic detergents, ammonia based cleaners and sanitizing solutions with no harm to the surface. Self contained models empty into a limited capacity evaporation pan, which will overflow if excess water is used in cleaning.

Do:

•Remove the product and all loose debris to avoid clogging the waste outlet.

•Store product in a refrigerated area such as a cooler. Remove only as much product as can be taken to the cooler in a timely manner.

•Disconnect electrical power before cleaning.

•Thoroughly clean all surfaces with soap and hot water.

pressure hoses to wAsh the interior.

these will destroy the merchandisers’

sealing causing leaks and poor performance.

•Take care to minimize direct contact between fan motors and cleaning or rinse water.

•Do NOT flood merchandiser with water.

never introduce wAter fAster thAn the

wAste outlet cAn remove it.

do not use steAm or high wAter

Do NOT Use:

•Abrasive cleansers and scouring pads, as these will mar the finish.

•Coarse paper towels on coated glass.

•Ammonia-based cleaners on acrylic parts.

•Solvent, oil or acidic based cleaners on any interior surfaces.

•Do not use high pressure water hoses.

Product will be degraded and may spoil if allowed to sit

in a non-refrigerated area.

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

Do NOT allow cleaning agent or

cloth to contact food product.

self contAined models empty into A condensAte evAporAtion pAn thAt will overflow if too much wAter is introduced during cleAning.

•Allow merchandisers to dry before resuming operation.

•After cleaning is completed, turn on power to the merchandiser.

MD Open Vertical Merchandisers

Page 26

4-2 MaIntEnancE

Do NOT use HOT water on Cold glass Surfaces.

This can cause the glass to shatter and could

result in personal injury. Allow glass fronts, to

warm before applying hot water.

CLEANING UNDER FAN PLENUM

To facilitate cleaning, the fan plenum is hinged.

After cleaning be sure the plenum is properly lowered into position

result due to improper refrigeration.

or product loss will

CLEANING STAINLESS STEEL SURFACES

Use non-abrasive cleaning materials, and always polish with grain of the steel. Use warm water or add a mild detergent to the water and apply with a cloth. Always wipe rails dry after wetting.

Use alkaline chlorinated or non-chlorine containing cleaners such as window cleaners and mild detergents. Do not use cleaners containing salts as this may cause pitting and rusting of the stainless steel finish. Do not use bleach.

SHUT FANS OFF DURING

CLEANING PROCESS.

DO NOT FLOOD!

Use only enough water necessary to clean

surface. Water must not drip down the case!

Never use ammonia based cleansers, abrasive

cleansers, or scouring pads.

P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com

Page 27

P/N 2402646_H 4-3

CLEANING COILS

Condenser coils should be cleaned at least once per month. Additional cleaning may be needed depending on the operational environment. A dirty condenser blocks normal airflow through the coils.

Airflow blockage increases energy consumption and reduces the merchandiser’s ability to maintain operating temperature.

To clean the coils, use a vacuum cleaner with a wand attachment and a soft (non-metallic) brush to remove dirt and debris. Do not bend coil fins. Always wear gloves and protective eye wear when cleaning near sharp coil fins and dust particles.

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

MD Open Vertical Merchandisers

Page 28

4-4 MaIntEnancE

CLEANING EVAPORATION PAN

(SELF CONTAINED ONLY)

The condensate water outlet for self contained models empties into a limited capacity evaporation pan.

Debris or dirt accumulation inside the condensate evaporation pan or on the heater coil will reduce the pan’s evaporation capacity and cause premature heater failure. The evaporation pan waste water will overflow and spill onto the floor if the heater is not properly operating.

Remove accumulated debris from the evaporation pan. Wipe down heater coil with a cloth and warm water. Be sure to remove any dirt, debris or liquids from the heater coil.

Evaporation Pan is Hot!

and poses risk of bodily injury – Always Wear gloves and protective eye wear when servicing. Turn off evaporation pan heater, and allow pan to cool.

Water introduced during cleaning will cause the evaporation pan to overflow.

REMOVING SCRATCHES FROM BUMPER

Most scratches and dings can be removed using the following procedure.

1. Use steel wool to smooth out the surface area of the bumper.

2. Clean area.

3. Apply vinyl or car wax and polish surface for a smooth glossy finish.

P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com

P/N 2402646_G U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com

Page 29

P/N 2402646_H 5-1

SERVICE

REPLACING FAN MOTORS AND BLADES

Should it ever be necessary to service or replace the fan motors or blades be certain that the fan blades are reinstalled correctly.

the blAdes must be instAlled with rAised

embossing (pArt number on plAstic blAdes) positioned As indicAted on the pArts list.

For access to these fans:

1. Remove product and place in a refrigerated area. Turn off power to the merchandiser.

2. Remove bottom display pans.

3. Disconnect fan from wiring harness.

4. Remove fan blade.

11. Close air gaps under fan plenum. Warmer air moving into refrigerated air reduces effective cooling. If the plenum does not rest against the case bottom without gaps, apply foam tape to the bottom of the fan plenum to reduce improper air movement. Use silicone sealant to close other gaps.

— LOCK OUT / TAG OUT —

5. Lift fan plenum and remove screws holding bottom of motor to fan basket.

6. Replace fan motor and blade.

7. Lower fan plenum.

8. Reconnect fan to wiring harness.

9. Turn on power.

10. Verify that motor is working and blade is turning in the correct direction.

12. Reinstall display pans. Bring merchandiser to operating temperature before restocking.

Product will be degraded and may spoil if

allowed to sit in a non-refrigerated area.

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

Note: Plenum length and number of fans will vary with model.

MD Open Vertical Merchandisers

Page 30

5-2 sErvIcE

REPLACING ELECTRONIC BALLASTS / LED POWER SUPPLIES

MD Merchandisers may be equipped with fluorescent or LED lights. Fluorescent lights are powered by electronic ballasts. LED lights are powered by power supplies. The procedure to replace these parts is similar.

Canopy Ballast or Power Supply

The canopy ballast or power supply is located in the electrical box on top of the MD case.

To gain access:

1. disconnect the electricAl power to the

merchAndiser.

2. Remove screws attaching the raceway cover, then remove cover.

3. Service or replace ballast/power supply as required. Reassemble items as they were originally installed.

4. Reconnect the electrical power.

REPLACING FLUORESCENT LAMPS

Fluorescent lamps have a plastic shield. When the lamp is replaced, keep the lamp shield to install over the new lamp.

The switch under the display lamp cover operates the display lamp.

REPLACING LED FIXTURES

The switch under the display lamp cover operates the display lamp. For LEDs, this protective shield is incorporated as part of the LED fixture. Rotate the LED fixture to release it from the lamp harness.

Fluorescent lamps contain mercury vapor.

Remove Plastic Pins Attaching Display Lamp

Mercury exposure at high levels can harm the brain, heart, kidneys, lungs, and immune system of people of all ages. Do not break or puncture fluorescent lamps. Dispose of, or store, all fluorescent lamps in accordance with Federal (40 CFR 273), State, and local hazardous waste requirements. Refer to http://www.epa.gov/mercury/about.htm

P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com

Page 31

P/N 2402646_H A-1

appEndIx a — tEchnIcal data

Models

MD-10UL MD-14UL

Standard Parts

Descripon Part Number

LH End (Beige) less glass 130721 X X

RH End (Beige) less glass 130722 X X

LH End (Black) less glass 0530442 X X

RH End (Black) less glass 0530443 X X

Plexi glass end insert 1006104 X X

Clip end glass (Beige) 0522940 X X

Clip end glass (Black) 0530681 X X

Front Bumper (RED) 37.75” 1006227 X

Front Bumper (RED) 51.5” 1006223 X

Evaporator Fan Motor (Motor 12W,basket,less blade) 0461804000 X

Evaporator Fan Motor (Motor 5W,basket& blade) 0505079 X

Evaporator Fan Blade 0142780002 X

Evap Fan Harness 0523592 X

Evap Fan Harness 1804163 X

Sensor NTC 4 mts Green 3023554 X X

Sensor NTC 4 mts Orange 3031571 X X

Control Eliwell RTN400 3023537 X X

Control Display KDE 3023552 X X

Display cable 5 meter 3023553 X X

Condensate pan heater relay SPDT NC 208V 0342599002 X X

Compressor Relay (T92P7A22-240) 1804241 X X

Power Switch 03S422 X X

Thermometer (horizontal) 1700559000 X X

Front Plexiglass 0520750 X

Front Plexiglass 0520751 X

Night Curtain 35S0841 X

Night Curtain 35S0842 X

Honeycomb 0520740 X

Honeycomb 0520500 X

Power Cord NEMA 6-15P 0508528 X X

Flourscent light (Canopy) F18T8 06S149 X

Flourscent light (Canopy) F032/841 32W 1803337 X

Ballast 06S187 X X

Lamp Holder 06S188 X X

Safety Sleeve 06S07417 X

Safety Sleeve 06S07414 X

Light Switch 1801241000 X X

LED Light 3’ 0515963 X

LED light 4’ 0515965 X

LED Power Supply 0518898 X X

LED lamp Holders 1803376 X X

Light Clips (LED) 0518906 X X

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

MD Open Vertical Merchandisers

Page 32

A-2 appEndIx a — tEchnIcal data

Models

Refrigeraon

Condensing Unit Assy (134a) Complete w/ condensate pan 0521330 X

Compressor (NJ6226Z) 208/230/60 2000555 X X

Condensing Unit Assy (134a) Complete w/ condensate pan 0521156

Condenser Coil E108812001 X

Condenser Coil E108814001

Drier (C052-S) 1700481000 X X

Condenser Fan Motor 21S071 X

Condenser Fan Blade 0500354 X X

Condenser Fan Motor 0521460

Assembly Evaporator Coil (Complete) 130421000 X

Assembly Evaporator Coil (Complete) 130422000

Evaporator coil E108813001 X

Evaporator coil E108815001

Models

Condensate Pan

Electric Condensate Pan Assy (w/heater & oat switch) 1H11037001 X X

Condensate Pan Heater (750w) 1H07734 X X

Float Switch 1804342 X X

MD-10UL MD-14UL

Models

Sheel Metal Replacement Parts Painted

Front Access Panel 0539989 X

Front Access Panel 0539990

LH End Panel -Base 0539537 X X

RH End Panel -Base 0539538 X X

Rear Base Panel- not to be painted 0210158 X

Rear Base Panel- not to be painted 0210159

Shelf Assembly (includes shelf,brackets and PTM) 130761 X

Shelf Assembly (includes shelf,brackets and PTM) 130762

Shelf Bracket 13062 X X

Shelf 130451 X

Shelf 130452

PTM 30S8151 X

PTM 30S8152

Boom Back Shelf 130221 X

Boom Back Shelf 130222

Boom Front Shelf 0210214 X

Boom Front Shelf 0210215

All these part numbers are painted assemblies

MD-10UL MD-14UL

P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com

Page 33

P/N 2402646_H A-3

MD — Plan View

Dimensions shown as inches and (mm).

8 3/8

(213)

4 1/4

(108)

REFRIGERATION OUTLET

ELECTRICAL OUTLET

17 1/8

(435)

7 3/4

(197)

4 (102) 3 7/8 (98)

DRAIN

Front of Merchandiser

Model Length MD-10 39" MD-14 52"

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

MD Open Vertical Merchandisers

Page 34

A-4 appEndIx a — tEchnIcal data

MD — Cross Section

REFRIGERATION DATA

Note: This data is based on store temperature

and humidity that does not exceed 75°F and 55% R.H. unless otherwise stated. Schedule defrost at night while lights are off.

Condensing Unit (hp) MD-10 1 MD-14 1

Condensing Unit Capacity

MD-10 7376 MD-14 7376

(Btu/hr at std. rating conditions)

DEFROST DATA

Frequency (hr)

Offtime

Failsafe (minutes) 10

Defrost Termination 50°F Temperature

Refrigerant Charge

MD-10 (R134a) 22.928 oz 0.65 kg MD-14 (R134a) 36.261 oz 1.028 kg

PHYSICAL DATA

P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com

Page 35

P/N 2402646_H A-5

Electrical Data

Note: These are rated values for individual components and should not be added together to determine total merchandiser electrical load.

MD-14 MD-10

Number of Fans – 5W 2 1

Amperes Watts Amperes Watts Evaporator Fans

208-230V 60Hz Standard 0.6 10 0.7 12

Condensate Pan Heaters (230V) 3.6 750 3.6 750

Condensing Unit (208/230V, 1Ph, 60Hz) Standard

MD-10 MD-14

Compressor LRA 41 41 Compressor RLA 9.5 9.5

Product Data

MD-10

AHRI Total Display Area

(Sq Ft/Case) 11.7 ft

/case ( 3.57 m

MD-14

AHRI Total Display Area

(Sq Ft/Case) 15.79 ft

/case ( 4.81 m

1 Computed using AHRI 1200 standard methodology: Total Display Area, ft2 [m2] / Unit of Length, ft [m]

/case)

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

MD Open Vertical Merchandisers

Page 36

A-6 appEndIx a — tEchnIcal data

ELECTRIC SPECS

MD-10

MODEL MD10UL VOLTAGE 208-230 V FRECUENCY 60 HZ COMPRESSOR NJ6226Z EMBRACO

12V

RTN400 SM

LINE

NEUTRO

OUT2

123456

SENSOR T EMP

DEFRO ST

GND

OUT2

OUT3

7 8 9 10 11 12 13

ORANGE

RS-485

OUT1

MODULE

TTL

PB2

21222324252627282930313233

OPTIONAL

OUT1

12V

GND

OUT4

1920

SENSOR T EMP

AIR

GREEN

PB1

15 cm. MAX.

OUT4

KEYB

ELECTRIC BOX

RE LAY

WARNING UNPLUG THE EQUIPMENT BEFORE TO MAKE ANY REPARATION TO AVOID ANY DAMAGE

ADVERTENCIA: DESCONECTAR EL EQUIPO ANTES DE HACER CUALQUIER REPARACIÓN, PARA EVITAR ALGUN DAÑO.

LA MP

OPTIONAL KIT

CO NDENSE R

648

1 0

FAN

SHE LF LED

EVAPORATOR

FAN

SHE LF LED

BALLAST

SWIT CH

BALLAST

COMPRESOR

LEVEL

SWIT C H

RE LAY

T STAT LIMIT

CO NDENSE R

HEATER

MAIN

SWIT C H

S2S4

NE MA

6-15 P

230 V 60HZ

0521458_F

1HP

P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com

Page 37

P/N 2402646_H A-7

ELECTRIC SPECS

MD-14

MODEL MD14UL VOLTAGE 208-230 V FRECUENCY 60 HZ COMPRESSOR NJ6226Z EMBRACO

12V

RTN400 SM

LINE

NEUTRO

OUT2

123456

SENSOR T EMP

DEFRO ST

GND

OUT2

OUT3

7 8 9 10 11 1213

ORANGE

RS-485

OUT1

MODULE

TTL

PB2

21222324252627282930313233

OUT1

SENSOR T EMP

AIR

GREEN

PB1

1920

OPTIONAL

12V

GND

OUT4

15 cm. MAX.

KEYB

RE LAY

WARNING UNPLUG THE EQUIPMENT BEFORE TO MAKE ANY REPARATION TO AVOID ANY DAMAGE

ADVERTENCIA: DESCONECTAR EL EQUIPO ANTES DE HACER CUALQUIER REPARACIÓN, PARA EVITAR ALGUN DAÑO.

CO NDENSE R

648

1 0

FAN

EVAPORATOR

FAN

COMPRESOR

ELECTRIC BOX

LEVEL

SWIT C H

RE LAY

T STAT LIMIT

CO NDENSE R

HEATER

MAIN

SWIT C H

LA MP

SWIT CH

S2S4

BALLAST

0521458_E

230 V 60HZ 1HP

NE MA

6-15 P

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

MD Open Vertical Merchandisers

Page 38

To obtain warranty information

or other support, contact your

Hussmann representative.

Please include the model and

serial number of the product.

Hussmann Corporation, Corporate Headquarters: Bridgeton, Missouri, U.S.A. 63044-2483 01 October 2012