Hussmann microSC MDN4775B1A Manual

Hussmann microSC MDN4775B1A Manual

Medium temperature self contained open vertical merchandiser

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Æ
MDN
(120V)
Medium Temperature Self Contained
Open Vertical Merchandiser
WARNINGS:
with R-290 Refrigerant
If the information in these instructions are not followed
exactly, a fire or explosion may result, causing property
damage, personal injury or death.
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
Installation &
has arrived and that technician advises that it is safe to
return to the store. No open flames, cigarettes or other
Operation Manual
possible sources of ignition should be used inside or in
the vicinity of the units.
FAILURE TO ABIDE BY THIS WARNING COULD
RESULT IN AN EXPLOSION, DEATH, INJURY AND
P/N 9FQ6P11007900_B
PROPERTY DAMAGE.
June 2023
IMPORTANT
Keep in store for future reference!
Spanish P/N 9FQ6P11008200
MANUAL I/O- MDN R-290 120V

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Summary of Contents for Hussmann microSC MDN4775B1A

  • Page 1 Æ (120V) Medium Temperature Self Contained Open Vertical Merchandiser WARNINGS: with R-290 Refrigerant If the information in these instructions are not followed exactly, a fire or explosion may result, causing property damage, personal injury or death. Installation and service must be performed by a qualified installer or service agency.
  • Page 3 P/N 9FQ6P11007900_B 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.
  • Page 5 Do not break the cold chain. Keep products cooler before loading into merchandiser. in freezer before loading into merchandiser. These merchandisers are designed for only These merchandisers are designed pre-chilled products. for only pre-frozen products. Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 6: Table Of Contents

    Re-Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9 Hussmann Product Control . . . . . . . . . . . . . . . 1-1 Service Safety .
  • Page 7: Ansi Z535.5 Definitions

    3069575 Excessive ambient conditions may cause condensation and therefore sweating of doors. This warning does not mean that Hussmann prod- Facility operators should monitor doors and floor ucts will cause cancer or reproductive harm, or conditions to ensure safety of persons.
  • Page 9: Installation

    55% . The serial number and shipping date of all equipment is recorded in Hussmann’s files for Placing refrigerated merchandisers in direct warranty and replacement part purposes . All sunlight, near hot tables or near other heat correspondence pertaining to warranty or parts sources could impair their efficiency .
  • Page 10 Ground wire (Optional) CAUTION Leveling Legs or Casters WARNING Floor NOTICE 2-inch gap Do not store items or flammable materials required (51 mm) atop the unit. IMPORTANT P/N 9FQ6P11007900_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com STOP STOP...
  • Page 11: Part Names

    The KDEPlus keyboard has 4 keys, as shown in the illustration: STANDBY or ESC DOWN Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. Each key has a different function depending on whether it is: • Pressed and released • Pressed for at least 5 seconds •...
  • Page 12: Additional Parts

    Do not block this inlet or the merchandiser will not cool properly Caster Condensing unit Over ow drain pan Additional parts Name Appearance Quantity Over ow drain pan P/N 9FQ6P11007900_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 13: Model Description

    Serial Plate merchandiser .It should be placed and left inside the bottom front interior compartment during normal operation of the merchandiser . Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 14: Equipment Start Up Check List

    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.
  • Page 15: Electrical / Refrigeration

    Never plug in more than one Front Grille merchandiser per electrical circuit . Power Switch • Always use a dedicated circuit with the amperage stated on the unit . Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 16: Refrigeration (Self Contained Models)

    DANGER NOTE STOP STOP DANGER NOTE ATTENTION INSTALLER NOTE DANGER NOTE DANGER P/N 9FQ6P11007900_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com NOTE...
  • Page 17: Controls And Adjustments

    Note: The cases are shipped out from factory with controller settings to comply with NSF 7 requirements. Honeycomb Discharge air temp MDN3575 B1A @ NSF Honeycomb Discharge air temp MDN3575 B1A @ NSF Type 1 ( ° F ) Type 1 ( ° F ) Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 18: Controller Operation

    . 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...
  • Page 19 Open Collector Output (OC). Not Used TTL Unicard/DMI/Multi Function Key connection OUT4 Shared Terminal 34-35-36 RS485. Connection 1 - Supervision Gateway. N.O. OUT4 37-38-39 RS485. Connection 2 - Supervision Gateway. Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. RTN400 Page 8/130...
  • Page 20 Product will be degraded and may spoil if Do NOT allow cleaning agent or allowed to sit in a non-refrigerated area. cloth to contact food product. P/N 9FQ6P11007900_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 21: Setpoint

    Deep cooling cycle • Opens Machine Status menu (User and Installer parameters) the user to select the Start/end defrost • Confirms commands application to be loaded. Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. RTN400 Page 21/130...
  • Page 22: Defrost Sensor Location

    . Ensure there is a turn of wiring . DETAIL A P/N 9FQ6P11007900_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com NOTES: INSTALL DA SENSOR (GREEN COLOR) ABOVE THE COIL ON THE BURRING MARK AVOIDING TOUCHIN THE METAL SURFACE WITH...
  • Page 23: Shelves

    . When night curtains are Do not block the discharge air outlet provided, pull them down during off hours to and return air inlet with products. enhance product quality . Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 24 . 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...
  • Page 25: Replacing Refrigeration System

    . 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 . Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 26 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...
  • Page 27: Maintenance

    . These will destroy the merchandisers’ sealing causing leaks and Bumper poor performance . • Never introduce water on self-contained units with an evaporator pan . Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 28: Do Use

    ● Be sure to wear appropriate personal protection equipment (PPE) P/N 9FQ6P11007900_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com when installing or moving the merchandiser. ■Installation, relocation and ●Remove all products and shelving ●Install the shelf as directed in this...
  • Page 29: Warnings

    ●In the event of a gas leak, open a window for ventilation, and do not touch the unit or electrical shock〉 plug. rovider Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. on a prevent ing over.
  • Page 30: Cleaning Steel Surfaces

    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...
  • Page 31: Cleaning Honeycomb

    Honeycomb PP marke Honeycomb Honeycomb left rear anchor tab removal xtures Condition of being removed Discharge air outlet Honeycomb removal xtures Honeycomb engagement groove PP marked with left rear Honeycomb Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 32: Cleaning Power Plug

    ⑤ Release clips that hold wires connected to ⑥ evaporation tray. ⑥ Remove 4 screws that x the evaporation tray assy. (Marked with in the gure in right.) ⑤ Wires Clip P/N 9FQ6P11007900_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 33 P/N 9FQ6P11007900_B Moisture Wicking Plate #1 Condenser Moisture Wicking Plate #2 (located under wicking plate #1) - 32 - Fan Motor Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 34: Night Curtain

    2 . Avoid the night curtain sheet touching the price tag molding or items placed inside the case . Night Curtain Night Curtain hook Return air inlet Deck pan Pull down Night Curtain P/N 9FQ6P11007900_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 35: Service

    This includes, but is not limited to, such items as doors, lights, fans, heaters, and thermostats. Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 36: Troubleshooting

    (Presence or absence of a symbol on the digital display board, a symbol on the digital Symptom P/N 9FQ6P11007900_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com display board, if it is presence, others, in details as much as possible.)...
  • Page 37: Direct Drain

    Remove 3 screws attached to the evaporation tray Remove 3 screws attached to the evaporation tray (Marked with in the gure at right.) (Marked with in the figure at right .) Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 38 ⑨ Attach a drain hose to the socket Hose Band Socket on the upper evaporation tray. Hose Band Socket Then apply a hose band to x. Drain hose Drain hose P/N 9FQ6P11007900_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 39 ● After this modi cation, the drain hose may be hooked when pull out the unit from the merchandiser. Please pay attention Parts List Part Name Part Code Quantity 1p 1 4FL-2-6360-198-00 Drain hose 2 821-0-8206-027-00 1p Hose band Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 40 P/N 9FQ6P11007900_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 41: Replacement Parts List

    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 Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 42 Material 84553498 Plant/Usage/Alt. 130B / 1 / 01 MDN4775 Replacement Parts List Description MDN4775B1A-BV0 Item Part Number Description Qty per case 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 Component parts are 9FQ2136058302 PAINTED BLACK EXTER PANEL MDN 47 specifically chosen for...
  • Page 43 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...
  • Page 44 Hussmann Corporation 12999 St. Charles Rock Road Bridgeton, MO 63044-2483 www.hussmann.com...

This manual is also suitable for:

Microsc mdn4775s1aMicrosc mdn3575b1aMicrosc mdn3575s1a

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