Hussmann MDN Medium Temperature Self Contained Open Vertical Merchandiser Instruction Manual

Hussmann MDN Medium Temperature Self Contained Open Vertical Merchandiser

Product Information

Specifications

• Model: MDN (120V)
• Type: Medium Temperature Self Contained Open Vertical Merchandiser
• Refrigerant: R-290
• Power: 120V

Product Usage Instructions

Before You Begin

Read these instructions completely and carefully. Personal Protection Equipment (PPE) is required whenever installing or servicing this equipment. Always wear safety glasses, gloves, protective boots or shoes, long pants, and a long-sleeve shirt as required when installing or servicing this equipment.

Important Warnings

1. If the information in these instructions is not followed exactly, a fire or explosion may result, causing property damage, personal injury, or death.
2. Installation and service must be performed by a qualified installer or service agency.
3. This unit is designed only for use with R-290 gas as the designated refrigerant. The refrigerant loop is sealed, and only a qualified technician should attempt to service it.

Operation Instructions

Merchandiser must operate for 24 hours before loading product. Regularly check merchandiser temperatures. Do not break the cold chain. Keep products in freezer before loading into merchandiser.

General Safety Precautions

The safety of our customers and employees is paramount. Please comply with the precautions described in this manual to protect yourself and others from possible harm. Follow OSHA standards for safety.

FAQs

• Q: What type of refrigerant does this unit use?
  • A: This unit is designed to use R-290 refrigerant.
• Q: Can I service the refrigerant loop myself?
  • A: No, only a qualified technician should attempt to service the sealed refrigerant loop.

MDN (120V)

Medium Temperature Self Contained Open Vertical Merchandiser

WARNINGS:
If the information in these instructions are not followed exactly, a fire or explosion may result, causing property damage, personal injury or death.

with R-290 Refrigerant

Installation and service must be performed by a qualified installer or service agency.

READ THE ENTIRE MANUAL BEFORE INSTALLING OR USING THIS EQUIPMENT.

The unit uses R-290 gas as the refrigerant. R-290 is flammable and heavier than air. It collects first in low areas but can be circulated by the fans. If propane gas is present or even suspected, do not allow untrained personnel to attempt to find the cause. The propane gas used in the unit has no odor. The lack of smell does not indicate a lack of escaped gas. If a leak is detected, immediately evacuate all persons from the store, and contact the local fire department to advise them that a propane leak has occurred. Do not let any persons back into the store until the qualified service technician has arrived and that technician advises that it is safe to return to the store. No open flames, cigarettes or other possible sources of ignition should be used inside or in the vicinity of the units.

Installation & Operation Manual

FAILURE TO ABIDE BY THIS WARNING COULD RESULT IN AN EXPLOSION, DEATH, INJURY AND PROPERTY DAMAGE.

P/N 9FQ6P11007900_B

IMPORTANT Keep in store for future reference!
MANUAL I/O- MDN R-290 120V

June 2023 Spanish P/N 9FQ6P11008200

P/N 9FQ6P11007900_B

iii

BEFORE YOU BEGIN

Read these instructions completely and carefully.
PERSONAL PROTECTION EQUIPMENT (PPE)
Personal Protection Equipment (PPE) is required whenever installing or servicing this equipment. Always wear safety glasses, gloves, protective boots or shoes, long pants, and a long-sleeve shirt as required when installing or servicing this equipment.

1. If the information in these instructions are not followed exactly, a fire or explosion may result, causing property damage, personal injury or death.
2. Installation and service must be performed by a qualified installer or service agency. 3. This unit is designed only for use with R-290 gas as the designated refrigerant.
THE REFRIGERANT LOOP IS SEALED. ONLY A QUALIFIED TECHNICIAN SHOULD ATTEMPT TO SERVICE!
· Propane is flammable and heavier than air. · It collects first in the low areas but can be circulated by the fans. · If R-290 is present or even suspected, do not allow untrained personnel to attempt to find the cause. · The propane gas used in the unit has no odor. · The lack of smell does not indicate a lack of escaped gas. · If a leak is detected, immediately evacuate all persons from the store, and contact the local fire department to advise them that a
pro pane leak has occurred. · Do not let any persons back into the store until the qualified service technician has arrived and that technician advises that it is
safe to return to the store. · A hand-held propane leak detector (“sniffer”) shall be used before any repair and/or maintenance. · No open flames, cigarettes or other possible sources of ignition should be used inside the building where the units are located
until the qualified service technician and/or local fire department determines that all propane has been cleared from the area and from the refrigeration systems. · Component parts are designed for propane and non-incendive and non- sparking. Component parts shall only be replaced with identical repair parts.
FAILURE TO ABIDE BY THIS WARNING COULD RESULT IN AN EXPLOSION, DEATH, INJURY AND PROPERTY DAMAGE.

P/N 9FQ6P11007900_B

v

ATTENTION
MMeerrcchhaannddiisseerrmmuusstt ooppeerrate for 24 hours bbeefoforreeloloaaddininggpprroodduucctt!!
RReegguulalarrlylycchheecckk mmeerrcchhaannddiisseerr tteemmppeerraattuurreess.. DDoonnoottbbrreeaakkththeeccooldldcchhaainin. .KKeeepppprordoudcutcstsin in cfroeoelzeer rbbeefoforereloloaadidnignginitnotommerecrhcahnadnidsiesre. r.
TheTsehemsercmhearncdhiasnedrsisaerres daeresigdneesdignfoerdonly for opnrley- cphreil-lefrdozperondpurcotds.ucts.

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

Open Vertical Merchandisers

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 1-800-890-2900
www.hussmann.com
© 2023 Hussmann Corporation

P/N 9FQ6P11007900_B
The safety of our customers and employees is paramount . The precautions and procedures described in this manual are intended as general methods for safe use of this equipment . Please be sure to comply with the precautions described in this manual to protect you and others from possible harm, and follow OSHA standards for safety .
The definitions at right are used to clarify the magnitude and urgency of harm and damage, considering problems arising from misuse . Relative to their potential danger, the definitions are divided into four parts according to ANSI Z535 Series .

vii
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 .

FOR CALIFORNIA INSTALLATIONS ONLY:
WARNING:

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

Cancer and Reproductive Harm

www.P65Warning.ca.gov

August 31, 2018

3069575

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 clarified 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.

REVISION HISTORY
REVISION B Updated California Warning and ANSI/NSF References
ORIGINAL ISSUE — NOVEMBER 2021 HUSSMANN CORPORATION · BRIDGETON, MO 63044-2483 U.S.A.

Excessive ambient conditions may cause condensation and therefore sweating of doors. Facility operators should monitor doors and floor conditions to ensure safety of persons.
All installation and operating instructions concerning the handling, moving, and use of these merchandisers must be carefully followed to avoid either damaging the refrigerant tubing, or increasing the risk of a leak.
Case ventilation openings must be clear of any obstructions. Do not damage the refrigerant circuit.
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 fans, heaters, thermostats and lights.
Do not use mechanical devices or other means to accelerate the defrosting process.
Do not use electrical appliances inside the food storage compartments of the case.
Open Vertical Merchandisers

P/N 9FQ6P11007900_B

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

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 .

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 . This model is Type II as described below .
NSF/ANSI 7 Type II ­ Display Refrigerator / Freezer Intended for 80°F / 55%RH Ambient Application
NSF/ANSI 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 inspected at our factory .

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 .
Recommended operating ambient temperature is between 60°F (16°C) to 80°F (27°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 NSF/ANSI 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 .

Any claim for loss or damage must be made to the carrier . The carrier will provide any necessary inspection reports and/or claim forms .
HUSSMANN CORPORATION · BRIDGETON, MO 63044-2483 U.S.A.

Do NOT stand or walk on top of merchandiser. Do not store items or
flammable materials atop the unit.
Open Vertical Merchandisers

1-2

INSTALLATION

LOCATION (Continued)
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 of 2 inches of clearance from walls, merchandisers, and any other large objects near the merchandiser’s vented base panels. A minimum space of 2 inches should be left above the case. Blocking or restricting air flow will adversely affect performance and may damage the refrigeration system.
If the merchandiser is used or stored in a hot spring or coastal area, it may be damaged (due to sulfur or salt) . If the intention is to install the merchandiser in any of the above areas or locations, contact the supplier or dealer where you purchased the merchandiser . Do not lay the case sideways to move the case . This may cause damage . Case should be installed on a flat, level floor .
After installation, fix the case in place with the leveling legs (case option) to make sure that it does not move. Or if the case has casters, lock the casters.

Air inlet
Do not block this inlet or the merchandiser will not cool properly

Air Exhaust
Ground wire
(Optional)

Hanging Wall
2-inch gap required
(51 mm)

Wall

! WARNING
Do not store items or flammable materials atop the unit.
P/N 9FQ6P11007900_B

Leveling Legs or Casters

Floor

2-inch gap required
(51 mm)

U.S. & Canada 1-800-922-1919 · Mexico 01 800-890-2900 · www.hussmann.com

P/N 9FQ6P11007900_B
Part names
Model MDN 120V shown Lamp switch
Tag molding
Deck pan Hussmann logo

1-3
Bracket
Shelf
The slots that hold the left and right shelf brackets are located at 0.59 inch intervals. The shelf position can thus be adjusted to match the size of the product stored.

Overflow drain pan

Front panel

Electrical controls box

Main Switch

Controller

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

UP 1 DOWN 2

3 STANDBY or ESC 4 SET

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

Open Vertical Merchandisers

1-4

INSTALLATION

Part names

Model MDN 120V shown Night Curtain (Optional)
LED lamp

Discharge air outlet
Do not block this outlet with product, or the merchandiser will not cool properly.
Return air inlet
Do not block this inlet with product, or the merchandiser will not cool properly.
Night Curtain
hook (Optional)
Handrail
Condenser fan Air inlet
Do not block this inlet or the merchandiser will not cool properly
Caster Condensing unit Overflow drain pan
Additional parts

Honeycomb
The honeycomb adjusts the air flow.
Evaporator fan Single-phase 120V power cord NEMA L5-30P
Air Outlet

P/N 9FQ6P11007900_B

U.S. & Canada 1-800-922-1919 · Mexico 01 800-890-2900 · www.hussmann.com

P/N 9FQ6P11007900_B

1-5

MODEL DESCRIPTION
The MDN 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 . See Section 2 for electrical information before starting the case .
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:
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 .

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 or flammable materials 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 attached braces and/or skids .
DO NOT TILT MERCHANDISER ON ITS SIDE OR END WHEN REMOVING SKID .
The case is equipped with casters for ease of installation and transportation inside store . Check floor where cases are to be set to see if it is a level area . Determine the highest part of the floor .

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

Do NOT remove shipping crate until the merchandiser is positioned for installation.
THERMOMETER
The cabinet has a “pencil” type thermometer and reads from -40º F to 120º F / -40º F to 50º F on 2º increments . The thermometer is located in the packout kit inside of the merchandiser .It should be placed and left inside the bottom front interior compartment during normal operation of the merchandiser .
Open Vertical Merchandisers

1-6

INSTALLATION

Hussmann Self-Contained Refrigeration Equipment Start Up Check List
Please note that failure to follow this start-up document may void your factory warranty

Step

Startup Activity

1

Locate, read and maintain install/operation manual in a safe place for future reference .

Check

2 Examine unit . Confirm there is NO damage or concealed damage .

3 Level the unit, side to side and front to rear .

4 Remove all shipping brackets/compressor straps/bolts etc . as required

5

Unit must be run on a dedicated electrical circuit without the use of an extension cord .

6

Ensure that the proper electrical requirements for the equipment are supplied .

7 Verify field electrical connections are tight .

8

Verify all electrical wiring is secured and clear of any sharp edges or hot lines .

9 Verify the condensate drain line is properly trapped and pitched .

10 Verify all required clearances on the sides and back of unit .

11

Verify there are no air disturbances external to the unit . Heat and air registers, fans, and doors etc .

Advise owner/operator that merchandiser must operate at temperature for 24 hrs prior to loading with product.
Form HSCW01 Rev. 30MAY12 P/N 0525209_B

LEGAL DISCLAIMER:
Hussmann shall not be liable for any repair or replacements made without the written consent of Hussmann, or when the product is installed or operated in a manner contrary to the printed instructions covering installation and service which accompanied such product.

P/N 9FQ6P11007900_B

U.S. & Canada 1-800-922-1919 · Mexico 01 800-890-2900 · www.hussmann.com

P/N 9FQ6P11007900_B

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 .
ALWAYS CHECK THE SERIAL PLATE FOR COMPONENT AMPERES
ELECTRICAL CONNECTIONS

· 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 .
Ensure ground pin is attached .
For any questions, contact the supplier or dealer where you purchased the product or licensed service provider .
! WARNING
Risk of Electric Shock. If cord or plug becomes damaged, replace only with a
cord and plug of the same type.

All wiring must be in compliance with NEC and local codes . Self contained models are electrical cord connected at the electrical box . Ensure ground pin is attached . For any questions, contact the supplier or dealer where you purchased the product or licensed service provider .
This unit uses a powercord with NEMA (L5-30P) plug .

! WARNING
Merchandiser must be grounded. Do not remove the power supply cord ground.
POWER SWITCH
The main ON/OFF switch is located on the front control on the bottom, righthand-side of merchandiser .

The powercord is rated for 30A/120V .

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 .
· Always use a dedicated circuit with the amperage stated on the unit .
HUSSMANN CORPORATION · BRIDGETON, MO 63044-2483 U.S.A.

Remove front grille. Power switch is located on the righthand side of the merchandiser, behind front grille.
Front Grille
Power Switch
Open Vertical Merchandisers

2-2

ELECTRICAL / REFRIGERATION

REFRIGERATION

WATER OUTLET AND WATER SEAL

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 .

The condensate water outlet is located at the front of the liner bottom under deck pan . 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 .

! WARNING
Refrigeration lines are under pressure. Refrigerant must be recovered before attempting any connection or repair.

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 .
! WARNING
Product will be degraded and may spoil if allowed to sit in a non-refrigerated area.

…ATTENTION INSTALLER
It is the contractor’s responsibility to install merchandiser(s) in accordance with
all local building and health codes.

! WARNING
— 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.

P/N 9FQ6P11007900_B

U.S. & Canada 1-800-922-1919 · Mexico 01 800-890-2900 · www.hussmann.com

P/N 9FQ6P11007900_B

2-3

CONTROLS AND ADJUSTMENTS
The controller controls refrigeration temperature . The controller is factory installed in the control panel mounted on the merchandiser’s fascia .
Discharge air temperatures should be measured at the center of the honeycomb . Defrosts are time initiated and temperature terminated for these models . The defrost setting is set in the factory . The product application is factory set for Med . Temp . – NSF7 as shown below .

Model MDN4775B1A/S1A MDN3575B1A/S1A

Product Application
Med Temp – DOE Med Temp – NSF 7 Type 1
Med Temp – DOE Med Temp – NSF 7 Type 1

Discharge Air Temperature ( Avg Ref mode )
25 ° F – 27 °F ( -4 °C to -3 °C )
25 ° F – 27 °F ( -4 °C to -3 °C )

Controller Set Point ( ° F )
23 ° F ( – 5 ° C ) 19 ° F ( – 7 ° C ) 28 ° F ( – 2 ° C ) 25 ° F ( – 4 ° C )

Note: The cases are shipped out from factory with controller settings to comply with NSF 7 requirements.

Defrost Frequency

( per day )

Type of Defrost Temp. Termination Failsafe time ( min )

6

Off Time

45 ° F ( 7 ° C )

50

Honeycomb Discharge air temp MDN3575 B1A @ NSF Type 1 ( ° F )
60 50 40 30 20 10
0

1 45 89 133 177 221 265 309 353 397 441 485 529 573 617 661 705 749 793 837 881 925 969 1013 1057 1101 1145 1189 1233 1277 1321 1365 1409

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

Open Vertical Merchandisers

2-4

ELECTRICAL / REFRIGERATION

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 .

This cabinet temperature may reflect the refrigeration cycle of the Set-Point and its’ Differential . The most accurate temperature on a cabinets operation is to verify the product temperature .
Main Features:

1 . Plug the merchandiser plug into its receptacle . · Panel-mounted

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 .

· Energy saving algorithms and optimized defrost control
· 8 preloaded applications · Defrost at single / double evaporator · Frame Heater · Local network auto-configuration

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 .

· Direct load connection (up to 2 HP) · Supply voltage control LVD · Presence of an open collector output

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

P/N 9FQ6P11007900_B

U.S. & Canada 1-800-922-1919 · Mexico 01 800-890-2900 · www.hussmann.com

P/N 9FQ6P11007900_B

2-5

CONNECTIONS

TERMINALS

1

2

3

4

5

6

OUT2 (1HP)

7

8
9 OUT3 (8A)

10 11
OUT1 (2HP)
12 13 14
OUT4 (8A)

A 15 16 17

GND D 12V

{

KEYB

RS485 OPTIONAL
34 35 36 37 38 39

33

12V

32

OC

31

D

30 29

GND LINK2
D

{

28

GND

27

26

25

24

23

22

21

20

19

18

ELIWELL

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

TERMINALS

1-2 NEUTRAL. These are power supply terminals.

15-16-17

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

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 LINK2. Connection 1 – local area network.

10 OUT1 Shared Terminal

30-31 LINK2. Connection 2 – local area network.

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.

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

Open Vertical Merchandisers

2-6

ELECTRICAL / REFRIGERATION

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

UP 1 DOWN 2

3 STANDBY or ESC 4 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

Pressed and released

Action Press for at least 5 secs

1

· Scrolls through menu items · Decreases values

Activates the Manual Defrost function (from outside menus).

Start-up —

2

· Scrolls through menu items · Decreases values

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

—

3

· Returns to the previous menu level
· Confirms parameter value

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

—

· Displays any alarms

4

set (if active) · Opens Machine Status menu

Opens the Programming Menu (User and Installer parameters)

· Confirms commands

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

Product will be degraded and may spoil if allowed to sit in a non-refrigerated area.

Do NOT allow cleaning agent or cloth to contact food product.

P/N 9FQ6P11007900_B

U.S. & Canada 1-800-922-1919 · Mexico 01 800-890-2900 · www.hussmann.com

P/N 9FQ6P11007900_B

2-7

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

set

set

set

set

It is possible to disable the keypad on this device.

TWhiethktehyseeptkaedycpaandbloeclkoecdke, ydobuycparnosgtirlal macmceinsgs

the the

“LOC” parameter appropriately. “Machine Status” menu by pressing

set

to display the Setpoint, but you cannot edit

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

set

set

set
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 agasient. The value measured by the associated 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:

UP 1 DOWN 2

set set

3 STANDBY or ESC 4 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
0 1 2 3 4 5 6
7 set
8

Function to enable
disabled defrost reduced set Light Energy saving
AUX Stand-by Deep cooling cycle Start/end defrost

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

Open Vertical Merchandisers

2-8

ELECTRICAL / REFRIGERATION

DEFROST SENSOR LOCATION

The defrost sensor (orange color) is installed on the 3rd turn, on the coil . Make sure the sensor is touching the copper metal surface . The sensor is held in place with a tie wrap .

A
NOTE: It is critical for merchandiser operating performance to have the sensors in this location. If for any reason, the sensors are removed, they need to be placed in the original location.
DISCHARGE AIR SENSOR LOCATION
The discharge air sensor (green color) is installed above the coil on the burring mark . Avoid touching the metal surface with the sensor tip . Ensure there is a turn of wiring .

A

DETAIL A

P/N 9FQ6P11007900_B

DETAIL A
U.S. & Canada 1-800-922-1919 · Mexico 01 800-890-2900 · www.hussmann.com

P/N 9FQ6P11007900_B

2-9

SHELVES
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 .
· Display items in such a way that will not protrude from the shelf / deck pan .
· Display the items uniformly on shelf / deck pan .

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 the air inlet and air outlet .

·

Do not place items more than 155 lbs on deck pan and shelf .

Do not use unapproved shelving, baskets, display

racks, or any accessory that could hamper air

· After removing the items, adjust the height and angle of the shelf .

curtain performance . Contact your Hussmann representative for more information .

· Adjust height and angle according to the product .

· The shelf height can be adjusted at 0 .59 inch intervals .

DRAIN WATER

· Change the angle of the shelf with the hook as the fulcrum .
STOCKING
Product should NOT be placed inside the merchandisers until merchandisers are at proper operating temperature .

If the evaporation mechanism is attached, drainage work is unnecessary if the outside air temperature is 80°F, the humidity is 55% RH, and the ambient wind speed is less than 47 .2 FPM .
During the summer and on high-humidity days, check the overflow drain pan at the bottom of the case, and throw out any excess water (See location illustration on Page 1-3) .

RE-START

A clearance of 2.5 inches is needed near the ends in order to maintain air flow and proper cooling performance.

Leave the product in the case for at least 5 minutes before re-starting the case .
If the merchandiser is re-started immediately after stopping, the overload protection unit or a breaker for wiring may trip, or an excessive load may be applied to the compressor, which will result in failure .

Do not block the discharge air outlet and return air inlet with products.

For energy savings: Please turn off the lights at night and at the time of closing the store . When night curtains are provided, pull them down during off hours to enhance product quality .

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

Open Vertical Merchandisers

2-10

ELECTRICAL / REFRIGERATION

Before Beginning Any Service or Repair:

Use a hand-held propane leak detector (“sniffer”) to ensure no propane is present in the immediate area, the inside of the display case and the inside of the refrigeration system . R-290 is an odorless refrigerant . Keep the area clear of all customers and non-essential or unauthorized personnel .
Verify that all repair parts are identical models to the ones they are replacing . Do not substitute parts such as motors, switches, relays, heaters, compressors, power supplies or solenoids . Failure to do so can result in an explosion, death, injury and property damage . Parts used on hydrocarbon cases must meet specific UL certification for non-incendive or non-sparking components . Use only Hussmann approved parts approved through the Hussmann Performance Parts Website . https://parts .hussmann .com/

Only Hussmann or factory trained technicians should service or repair this R-290 (propane) equipment.
Failure to follow instructions can result in an explosion, death, injury and property damage.

Brazing must not begin before all propane has been cleared from the immediate area — the inside of the displays case and the inside of the refrigeration system .

If a leak is detected, follow store safety

· The propane gas used in the unit has no odor .

procedures . It is the store’s responsibility to have The lack of smell does not indicate a lack of

a written safety procedure in place . The safety escaped gas .

procedure must comply with all applicable codes · A hand-held propane leak detector

such as local fire department’s codes .

(“sniffer”) should be used before any repair and/

or maintenance is attempted . All repair parts

At minimum, the following actions are required: must be identical models to the ones they are

· Immediately evacuate all persons from the replacing .

store, and contact the local fire department to · No open flames, cigarettes or other possible

advise them that a propane leak has occurred . sources of ignition should be used inside the

· Call Hussmann and/or a qualified service building where the units are located until the

agent and inform them that a propane sensor has qualified service technician and/or local fire

detected the presence of propane .

department determines that all propane has been

· Do not let any persons back into the store cleared from the area and from the refrigeration

until the qualified service technician has arrived systems .

and that technician advises that it is safe to

return to the store .

P/N 9FQ6P11007900_B

U.S. & Canada 1-800-922-1919 · Mexico 01 800-890-2900 · www.hussmann.com

P/N 9FQ6P11007900_B
REPLACING REFRIGERATION SYSTEM COMPONENTS
Only Hussmann service technicians or technicians qualified to handle R-290 (propane) refrigerant should service or repair this R-290 (propane) equipment Failure to follow instructions can result in an explosion, death, injury and property damage.

2-11
7 . Pull vacuum to a minimum of 200 microns or lower .

STEPS TO RECOVER REFRIGERANT

1 . Make sure you are in a well ventilated area before making any service or repair to the refrigeration system .
2 . Disconnect all power sources from the system . Some systems may have more than one plug or power supply .
3 . Tap system with line tap valves, attaching gauges to the high and low sides of the system .
refrigeration line tapping valve
4 . Connect hose to an evacuated recovery tank . Open refrigeration gauges and recovery tank .

CHARGING
A calibrated scale with +/-2 gram accuracy must be used to charge the system . The charge amount is shown on the serial plate . Only R-290 grade refrigerant can be used . Standard propane does not meet the purity/moisture content of R-290, and therefore cannot be used to charge cases .
No gas charge adjustments are allowed . When connecting hoses between the refrigeration system, manifold gauges, and refrigerant cylinder, ensure that the connections are secure and there are no potential sources of ignition nearby . Ensure that contamination of different refrigerants does not occur when using charging equipment .

5 . With the suction valve in vacuum, the refrigerant will be recovered into the recovery tank .

6 . Once recovered, close the tank valve and remove the guage from the tank and connect nitrogen tank to the system to purge it with nitrogen .
HUSSMANN CORPORATION · BRIDGETON, MO 63044-2483 U.S.A.

Open Vertical Merchandisers

2-12

ELECTRICAL / REFRIGERATION

Use dedicated hoses to service R-290 (propane) refrigeration systems . Hoses or lines should be as short as possible to minimize the amount of refrigerant contained in them .

Ensure that the refrigeration system is properly grounded prior to charging the system with refrigerant, to avoid the potential for static build-up .

Extreme care must be taken not to overfill the refrigeration system . After charging, carefully disconnect the hoses, attempting to minimize the quantity of refrigerant released . Further leak check the service ports, hoses, refrigerant tanks . The service ports shall be checked for leaks using a hydrocarbon leak detector with a sensitivity of 3 grams/year (0 .106 Oz/year) leak rate .

Thoroughly leak check the service ports . If no leak is present, use a pinch- off tool to close the ends of the service tubes before brazing them shut . Remove all service ports . If a Schrader valve is used on the compressor service tube, it must be removed and the previous steps followed in order to braze the service tube shut .

Component parts shall be replaced with like components, and servicing shall be done by factory authorized service personnel only, so as to minimize the risk of possible ignition due to incorrect parts or improper service.

Refrigeration lines are under pressure. Refrigerant must be recovered before attempting any connection or repair.

— 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.

P/N 9FQ6P11007900_B

U.S. & Canada 1-800-922-1919 · Mexico 01 800-890-2900 · www.hussmann.com

P/N 9FQ6P11007900_B

3-1

MAINTENANCE

CARE AND CLEANING

Do:

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 . NEVER USE ABRASIVE CLEANSERS OR SCOURING PADS.
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 drain pan, which will overflow if excess water is used in cleaning .
Do NOT Use:
· Steel Wool, abrasive cleansers and scouring pads, as these will mar the finish .

· 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 .
· Take care to minimize direct contact between fan motors and cleaning or rinse water .
· Allow merchandisers to dry before resuming operation . After cleaning is completed, turn on power to the merchandiser .
REMOVING SCRATCHES FROM (OPTIONAL) BUMPER
1 . Use steel wool to smooth out the surface area of the bumper .
2 . Clean area .

· Coarse paper towels on coated glass . · Ammonia-based cleaners on acrylic parts .

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

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

· Do not use steam or high pressure water hoses to wash the interior . These will destroy the merchandisers’ sealing causing leaks and poor performance .

Bumper

· Never introduce water on self-contained units with an evaporator pan .

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

Open Vertical Merchandisers

3-2

MAINTENANCE

! WARNING

Refers to something you MUST NOT do.

Refers to something you MUST do.

Installation, relocation and

Electrical work

During use

storage

DO NOT

Prohibition

Do not apply strong force against, or
impact the glass surfaces when
moving themerchandiser.

Contact a licensed service

provider.

Electrical work includes :

Installation of a high-speed electric

Prohibition

DO NOT
Do not throw products into the merchandiser.
Do not put hands, apply strong

DO
Unplug the merchandiser and empty
the accumulated water from the
overflow drain pan before
moving and/or storing.

leakage breaker. Installation of a breaker for wiring.
Installation of dedicated socket with a ground.
Make sure to complete grounding

force /impact, or throw products against the glass surfaces.
Do not place any items that exceed
the specified weight onto the shelves. Do not overload the shelves with

Be sure to protection

ewqeuairpampepnrot p(PrPiaEt)e

personal

when installing or moving the

merchandiser.

Remove all products and shelving
from the merchandiser prior to

moving.

Contact Hussmann Customer Service

for assistance when relocating the

merchandiser.

work for any grounded outlet.

Follow all appropriate standards, laws and regulations regarding electrical

installation (Failure may cause a fire or electric

power leakage.)

MDN

120V / 1 60Hz, 30A

product Do not let the nightshade go until it has been securely fastened, or rolled up.

DO
Install the shelf as directed in this manual.

Installation DO NOT

Maintenance, service and

check up

In case of abnormalities or unit failure during operation, immediately stop

use and unplug from outlet electrical

Or may cause electric shock or leak

Prohibition

Do Do

not not

uinssetathll ethmeemrcehrachnadnisdeirseoruitndoa ors.

place where it can easily come into

contact with water

DO

Or may cause fire or electric shock
Contact a licensed service provider
for installation service. Or may cause injury Place the product securely on a
strong and level floor.

Prohibition

DO NOT

Or may cause electric shock

Do not clean the machine

compartment.

Do not clean the water-drainage

channel.

Do not replace or inspect the LED

lights. Do not

clean

the

moisture-wicking

plates

DO
Or may cause electric shock

outlet.

Danger of smoke, fireor electric shock

Examples of abnormalities/unit failure

YTohoreuhepsmaorwealenlrsacobomnrdeotrohmrinapgllunbgouibsrneei.cnogmes very hot.

The unit is flooded in water You feel an electric current

Please contactHussmann immediately.

Take necessary measures to prevent

Contact a licensed service provider

the merchandiser from tipping over.

to clean the machine compartment

and/or water-drainage channel.

This appliance is not intended for use

Storage and disposal

For details, please contact Hussmann Customer Service

by persons (including children) with reduced physical, sensory or mental

DO

2

Or may cause electric power leakage

and/or electric shock

Keep the product away from

rainwater.

Empty the overflow drain pan

completely when removed.

Contact a licensed service provider for

disposal of the merchandiser.

capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.

For details, please contact Hussmann

Customer Service

P/N 9FQ6P11007900_B

U.S. & Canada 1-800-922-1919 · M2exico 01 800-890-2900 · www.hussmann.com

P/N 9FQ6P11007900_B

3-3

! WARNING

Refers to something you MUST NOT do.

Refers to something you MUST do.

During use

In case of abnormalities or unit failure

DO NOT

during operation, immediately stop use and unplug from outlet electrical

Or may cause fire, electric shock or injury

outlet.

Prohibition

Do not store explosive substances such as aerosol cans with a flammable
propellant in this merchandiser. Do not use a flammable spray near
the merchandiser or put any flammable

Danger of smoke, fire or electric shock Examples of abnormalities/unit failure
You smell something burning or hear an abnormal noise.
The power cord or plug becomes

items on the merchandiser. Do not spray water outside or

very hot. The unit is flooded in water

inside the merchandiser directly, and do

not wash the merchandiser with water.

You feel an electric current

Do not touch the control panel with a

Please contact Hussmann immediately.

wet hand.

Never disassemble, repair or reconfigure the product.
Do not insert any screws into the surface of the merchandiser
Never insert fingers, sticks, etc. into the cold air outlet, cold air inlet,

This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experienceand knowledge, unless they have been

air intake opening, air discharge
opening, or any moving parts. Or may cause injury due to collapse,
tipping, or damage of the unit Do not step on the unit. Do not place anything on the unit. Or may cause flame or explosion

given supervision or instruction concerning use of the appliance by
a person responsible for their safety. Children should be supervised to
ensure that they do not play with the appliance.

Do not use any electric appliances

The expected lifespan of the moisture

inside the merchandiser.

wicking plates will differ in accordance

Risk of damage to health Never keep any medicines in the
merchandiser.

with the operating environment, absorption will deteriorate with dust, oil, and other forms of soiling. The wicking plate should be replaced at

DO

least once per year.

2

Or may cause flame or explosion

Use the unit only to display and

merchandise food and beverages.

2

(Use for other purposes could result

in a deterioration in quality of the

displayed merchandise)

In the event of a gas leak, open a window for ventilation, and

do not touch the unit or electrical

plug.

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

Open Vertical Merchandisers

3-4

MAINTENANCE

CLEANING STEEL SURFACES (available only with stainless steel models)

CLEANING CONDENSER COILS

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 steel finish . Do not use bleach .

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 .
Disconnect the power cord .

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.
— 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.

Remove the two screws of the front panel, then pull out the panel .
Remove the 8 screws in the area shown by the figure .
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 .

Shut Fans Off during cleaning process. Do NOT use HOT water on cold glass surfaces. This can cause the glass to shatter and could result in personal injury. Allow glass surface to
warm before applying hot water.

P/N 9FQ6P11007900_B

U.S. & Canada 1-800-922-1919 · Mexico 01 800-890-2900 · www.hussmann.com

P/N 9FQ6P11007900_B

3-5

CLEANING HONEYCOMB

Clean periodically once a month .
If the honeycomb is not too dirty, tap honeycomb lightly to remove the dust .
If the honeycomb is filthy, rinse off with water . Take care not to bend or mark the honeycomb . To remove the honeycomb, pull the honeycomb removal fixtures (two per honeycomb) down, and pull the honeycomb down and out .
To secure the honeycomb, push the entire honeycomb into the discharge air outlet, beginning from the end, position it horizontally, and push the anchor tabs on the honeycomb removal fittings until they are aligned with the honeycomb engagement groove . The honeycomb is at its optimum position when the groove and tab positions are aligned properly .)

Discharge air outlet

Honeycomb removal fixtures

Honeycomb

Honeycomb anchor tab

Honeycomb engagement groove

Condition of being removed
Honeycomb removal fixtures

PP marked with left rear

Honeycomb

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

Open Vertical Merchandisers

3-6

MAINTENANCE

CLEANING POWER PLUG

CLEANING DRAIN EVAPORATION

SYSTEM

Cleaning the system requires disassembly . This

merchandiser has an evaporation device that

Unplug

consists of 2 evaporation trays, and upper tray,

and lower tray . Drain water goes to the upper

tray first to evaporate, and any remaining

Remove the power plug from the power

water that does not evaporate will flow to the

socket and clean off the dust and dirt on the

lower tray . The waste water then flows to the

terminals . Also clean off the dust and dirt on overflow drain pan .

the power cord and the surrounding . After cleaning, wait 5 minutes before plugging the

Remove accumulated debris from the

power plug back into the power socket . Check evaporation pan .

to ensure cord is not damaged or cracked .

Contact Hussmann for a replacement cord, or Debris or dirt accumulation inside the trays

a licensed service provider .

or on the condenser will reduce evaporation

capacity . Details of the evaporation system

unit are shown on the next page .

Dust or dirt may accumulate within a short period depending on the conditions of the installation place or the environment for use. Check when cleaning. Wicking plate MUST be
changed at least once a year.
Evaporation System may be Hot! and pose risk of bodily injury ­ Always Wear gloves
and protective eye wear when servicing. Turn off power and allow to cool before servicing.

CHANGING MOISTURE WICKING PLATES
Wicking plates must be replaced at least once per year . The expected life span of the moisture wicking plates will differ in accordance with the installation environment, but absorption capabilities will deteriorate with dust, oil and other forms of soiling . The wicking plates are shown in the illustration on the next page .
Contact your Hussmann representative for replacement parts .

P/N 9FQ6P11007900_B

U.S. & Canada 1-800-922-1919 · Mexico 01 800-890-2900 · www.hussmann.com

P/N 9FQ6P11007900_B
Condenser

3-7
Moisture Wicking Plate #1
Moisture Wicking Plate #2 (located under wicking plate #1)

Fan Motor

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

Open Vertical Merchandisers

3-8

MAINTENANCE

NIGHT CURTAIN (Optional)
Use the night curtain after business hours and during non-business days to save energy .
To use the night curtain:
1 . Grasp the handle and pull downward . Hook the handle over the night curtain hook located on the backside of handrail .
2 . Avoid the night curtain sheet touching the price tag molding or items placed inside the case .

Night Curtain Pull down

Night Curtain Night Curtain hook Return air inlet Deck pan

P/N 9FQ6P11007900_B

U.S. & Canada 1-800-922-1919 · Mexico 01 800-890-2900 · www.hussmann.com

P/N 9FQ6P11007900_B

4-1

SERVICE

IN CASE OF THE FOLLOWING:

LED Lamp does not work:

When moving the case a long distance:

Contact your Hussmann representative to replace LED lamp fixtures . Fixtures must be replaced with like fixtures .

Use a trolley . Caution must be observed when moving the case to prevent it from toppling over if it is tilted more than necessary .

When not using the merchandiser for a long period of time:
Remove all items from the merchandiser, and the power plug from the power socket . Clean the inside of the cabinet, and wipe away any moisture . Make sure not to store the unused case in a place where children can play .
Damage to the power cord or plug: If the cord is damaged, unplug the cord, and contact your Hussmann representative for replacement . Do not allow the wheels of the merchandiser to rest on the cord .

LED POWER SUPPLY LOCATION
The LED driver delivers DC power to the LED Lamp . The power supply is located behind the panel on the righthand side of the case . If it is determined that the power supply is not working and needs to be replaced, replace it with like components . Failure to place with a similar rated power supply will cause the LED lamp to be damaged or not work properly .
LED Driver (Power Supply)

Water on the floor: If there is water around the merchandiser, check overflow drain pan underneath the case, and dispose of any accumulated water or dirt in the pan . Wicking plates may need replacement .

— 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.

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.

Open Vertical Merchandisers

4-2

SERVICE

TROUBLESHOOTING

INVESTIGATE TROUBLE ACCORDING TO THE FOLLOWING TABLE: Try performing the check points and actions to solve the problem . If the merchandiser does not work correctly, or you hear an abnormal noise, smell something abnormal or smoky, immediately stop using the merchandiser and remove the plug from the power socket . Remove all items from the merchandiser, and then inform the “necessary information” to the supplier or dealer where you purchased the merchandiser or a licensed service provider .

Symptom

Check points

Actions

The case can not get cold at all

The power plug is disconnected . The power supply is cut off .
The breaker for wiring is operated . The electric leakage breaker was operated .

The case

The wind is hitting the merchandiser .

is not cold enough The ambient temperature, humidity

excessively high .

Insert the power plug in securely .
Confirm the recovery .
Contact the supplier or dealer where you purchased the merchandiser or a licensed service provider .
Keep the wind speed less than 47 .2 FPM (0 .2 mps) .
Refer to Page 1-1 for recommended operating ambient temperatures .

The merchandiser is installed in direct sunlight, Move the location of the installation . Refer to

or near an oven or stove .

“Location” on page 1-1 and 1-2 .

The setting of the temperature is high .

Refer to “Controls and Adjustments” on page 2-3 .

The items are inserted without pre-cooling .
The items close off the discharge air inlet or discharge air outlet .

Refer to Page 1-1 for location requirements .

The items are placed at the air inlet opening or Do not place items hindering ventilation . air outlet opening of the condenser .

The condenser is clogged .

Refer to “Cleaning Drain Evap . System” on Page 3-6 .

The drain pan tray is dirty .

Clean periodically as needed .

The case is

The case is installed on an unstable floor .

making an odd or

loud noise .

The case does not stand up correctly .

Place the merchandiser securely on a strong and level floor .

The rear of the case is touching a wall .

Move the merchandiser away from a wall .

Dew formation outside of the case .

For a while after starting the case, you may hear some noise from the compressor . However, it will decrease soon .
On hot summer days, or depending on the location of the installation, a dew may stick to the outer surface of the merchandiserespecially the glass surface . In case of high humidity, a dew is formed by touching cold objects to the moisture in the air, so it is not a malfunction . When the dew is attached, wipe off with a dry cloth . These case models are designed for operation in Type II or below environments .

P/N 9FQ6P11007900_B

U.S. & Canada 1-800-922-1919 · Mexico 01 800-890-2900 · www.hussmann.com

P/N 9FQ6P11007900_B

DIRECT DRAIN

The evaporation system can be modified for a direct floor drain .

xample of

Disconnect the power cord .

Remove 2 screws of the front panel, then the panel itself .

Remoovvee88scscrerwews isninthtehaereaareshaoswhnowbyn by

initnhethfiegufirgeu. re .

SStep 11

UUnnpplluugg

Pull out the unit. .

4-3

FFrroonntt ppaanneell
Display Case
Unit Evaporation tray

Condensing Unit Cassette

RReemmoovvee 33 screws attached too tthheeeevvaappoorraattiioonnttrraayy (M(Maarrkkeeddwwiitthh in itnhethfeigfiugrueraetartigrihgth .t).)
HUSSMANN CORPORATION · BRIDGETON, MO 63044-2483 U.S.A.

Open Vertical Merchandisers

4-4

SERVICE

Remove upper moisture wicking plates.
Remove 6 screws from the 2 brackets that attach to the evaporation pipe. Then remove evaporation tray assembly. (Do not remove the evaporation pipe.)

Upper moisture wicking plates (Not needed after modification)

Bracket

Evaporation tray assy

Remove 4 screws that attach to the lower evaporation tray and lower moisture wicking plate. Then remove the tray assembly and the moisture wicking plate.
Screws
Lower moisture wicking plates (Not needed after modification)

Screws

Attach a drain hose to the socket on the upper evaporation tray.
Then apply a hose band to fix.

Hose Band Hose Band

Refrigeration System Tray
Socket Socket

P/N 9FQ6P11007900_B

Drain hose
U.S. & Canada 1-800-922-1919 · Mexico 01 800-890-2900 · www.hussmann.com

P/N 9FQ6P11007900_B

4-5

Apply caulking on drain hose connection to prevent water leaks.

Apply caulk

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

Open Vertical Merchandisers

4-6

SERVICE

• Need to replace circled parts with new pictures

MDN Visual Depiction on Non-Incendive Replacement Parts

Main Switch

Light Switch

Solid State Relay

Control RTN400

Control Display KDE

Component parts are specifically chosen for propane exposure and therefore non-incendive
and non-sparkling. Component parts shall be replaced with identical components, and servicing shall be done by factory authorized service personnel only, so as to minimize the risk of possible ignition due to incorrect parts
or improper service.

P/N 9FQ6P11007900_B

U.S. & Canada 1-800-922-1919 · Mexico 01 800-890-2900 · www.hussmann.com

P/N 9FQ6P11007900_B

MDN 3575 Replacement Parts List

Item Part Number

Description

1 3089733

LED-ES ULTRA CNPY 36IN 4000K

2 3074549

SWITCH-TGL SPST 15A 125V mfg.1NT91-2

3 3132257

COIL MDN35 4384724.5

4 9FQ2433061100 TUBE-CAPLILLARY ID 0.08IN X 170IN

5 9FQ2136054302 EXTER PANEL FTN MDN 3FT

6 3037477

CONDENSER 24 IN X 8.5 IN

7 3119618A

FILTER DRIER R-290 0.25 ODF

8 3082149A

BLADE-FAN 8 IN CCW

9 3082147

MOTOR-13W 70-264V NSC

10 4FL2422022600 EVAPORATOR

11 9FQ2460068500 COMPRESSOR NT2210U 120V R290 1.25HP

12 3117868A

POWER SUPPLY – 4A 24V 96W

13 3023537B

CONTROL-ELIWELL RTN400

14 3023554B

SENSOR-NTC 4 METER GREEN

15 3031571A

SENSOR-NTC 4 METER ORANGE

16 3023553D

CONNECTOR-5 MTS CABLE CO000227

17 9FQ4F30002000 EMC FILTER RSEL2002A

18 9FQ4S20001900 RELAY DPDT 30ANO_10aNC 230VAC

19 9FQ4S22002200 MAIN SWITCH CIRCUIT BREAKER AA 1-BO-44-630-1D1-1 30

20 9FQ0423036300A FAN PACK CONNECTOR AS

21 9FQ0039014902 BLACK PAINTED SHELF KIT ASSY

22 9FQ2224009302 INNER GLASS BLACK

23 9FQ2224009402 INNER GLASS BLACK

24 9FQ2140058602 PAINTED BLACK EXTER TOP MDN 35

25 9FQ2129060202 PAINTED BLACK EXTER COVER MDN L

26 9FQ2129070302 PAINTED BLACK EXTER COVER R B1A

27 9FQ0022030902 PAINTED BLACK DECK PAN ASSY MDN 3FT

28 9FQ2136047902 BLACK EXTER PANEL R290

29 3023552B

CONTROL-DSPL KDE

30 9FQ2180004702 PAINTED BLACK TRIM

Qty per case 1 1 1 1 1 1 1 2 2 2 1 1 1 1 1 1 1 1 1 1 5 1 1 1 1 1 1 1 1 2

4-7
Component parts are specifically chosen for propane exposure and therefore non-incendive and non-sparkling. Component parts shall be replaced with identical components, and servicing shall be done by factory authorized service personnel only, so as to minimize the risk of possible ignition due to incorrect parts
or improper service.

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

Open Vertical Merchandisers

MDN4775 Replacement Parts List

Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Part Number

Description

3089734C

LED-ES ULTRA CNPY 48IN 4000K

3074549

SWITCH-TGL SPST 15A 125V mfg.1NT91-2

9FQ0422034100 COIL-MDN47 438-4-6-36.5

3037649A

CAPILLARY-TUBE.054INIDX130INLG

9FQ2136058302 PAINTED BLACK EXTER PANEL MDN 47

9FQ0413034200 CONDENSER 30IN X 8.5IN DOUBLE C

3119618A

FILTER DRIER R-290 0.25 ODF

3082149A

BLADE-FAN 8 IN CCW

3082147

MOTOR-13W 70-264V NSC

4FL2422022000 EVAPORATOR

4FL2422022500 EVAPORATOR

3117868A

POWER SUPPLY – 4A 24V 96W

3023537B

CONTROL-ELIWELL RTN400

3023554B

SENSOR-NTC 4 METER GREEN

3031571A

SENSOR-NTC 4 METER ORANGE

3023553D

CONNECTOR-5 MTS CABLE CO000227

9FQ4F30002000 EMC FILTER RSEL2002A

9FQ4S20001900 RELAY DPDT 30ANO_10aNC 230VAC

9FQ4S22002200 MAIN SWITCH CIRCUIT BREAKER AA 1-BO-44-630-1D1-1 30

9FQ0423036300A FAN PACK CONNECTOR AS

9FQ0039012102 SHELF BLACK KIT ASSY

9FQ2224009302 INNER GLASS BLACK

9FQ2224009402 INNER GLASS BLACK

9FQ2140062402 PAINTED BLACK PAINTED EXTER TOP

9FQ2129060202 PAINTED BLACK EXTER COVER MDN L

9FQ2129070302 PAINTED BLACK EXTER COVER R B1A

9FQ0022030802 PAINTED BLACK DECK PAN ASSY MDN 45

9FQ2136048202 PAINTED BLACK EXTER PANEL 4FT R290

3023552B

CONTROL-DSPL KDE

9FQ2180004702 PAINTED BLACK TRIM

3093957B

COMPRESSOR-R290 115 V 2168U

Qty per case 1 1 1 2 1 1 2 3 3 1 1 1 1 1 1 1 1 2 1 1 5 1 1 1 1 1 1 1 1 2 2

Component parts are specifically chosen for propane exposure and therefore non-incendive and non-sparkling. Component parts shall be replaced with identical components, and servicing shall be done by factory authorized service personnel only, so as to minimize the risk of possible ignition due to incorrect parts
or improper service.

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

Hussmann Corporation
12999 St. Charles Rock Road Bridgeton, MO 63044-2483 www.hussmann.com

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>