Hussmann microSC MDN-BA Installation & Operation Manual

Hussmann microSC MDN-BA Installation & Operation Manual

Medium temperature self contained open vertical merchandiser with r-290 refrigerant

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Æ
MDN-BA/SA
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 9FQ-6-P110-075-00_B
PROPERTY DAMAGE.
April 2021
IMPORTANT
Keep in store for future reference!
Spanish 9FQ-6-P110-077-00
I/O MANUAL MDN R-290

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Summary of Contents for Hussmann microSC MDN-BA

  • Page 1 Æ MDN-BA/SA 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 2 P/N 9FQ-6-P110-075-00_A 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 3 Do not break the cold chain. Keep products cooler before loading into merchandiser. in freezer before loading into merchandiser. These merchandisers are designed These merchandisers are designed for only pre-chilled products. for only pre-frozen products. Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 4: Table Of Contents

    System Componets . . . . . . . . . . . . . . . . . . . . . 2-11 Hussmann Product Control . . . . . . . . . . . . . . 1-1 Steps to Recover Refrigerant .
  • Page 5: Ansi Z535.5 Definitions

    August 31, 2018 Excessive ambient conditions may cause conden- sation and therefore sweating of doors. Facility oper- This warning does not mean that Hussmann products ators should monitor doors and floor conditions to will cause cancer or reproductive harm, or is in ensure safety of persons.
  • Page 6: Installation

    Do NOT stand or walk on top of the carrier . The carrier will provide any necessary merchandiser. Do not store items or flammable materials atop the unit. inspection reports and/or claim forms . Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 7 Air Exhaust Air inlet Clearance ATTENTION Do not block this inlet from Wall INSTALLER Leveling Legs or Casters or the merchandiser will not cool properly Ground wire (Optional) DANGER P/N 9FQ-6-P110-075-00_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 8: 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 9: 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 9FQ-6-P110-075-00_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 10: Model Description

    . Serial Plate 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 11: 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 12: Electrical / Refrigeration

    . ATTENTION WARNING INSTALLER NOTICE DANGER Risk of Electric Shock. If cord or plug becomes damaged, replace only with a cord and plug of the same type. DANGER IMPORTANT Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. NOTE...
  • Page 13: Refrigeration (Self Contained Models)

    When brazing pipes, be sure to use an STOP STOP insulation blanket (not shipped with the DANGER merchandiser) to prevent damage to the NOTE ATTENTION metal merchandiser bottom. INSTALLER NOTE DANGER NOTE DANGER P/N 9FQ-6-P110-075-00_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com NOTE...
  • Page 14: Controls And Adjustments

    Med Temp ‐ DOE  27 ° F  (  ‐ 3 ° C ) 25 ° F ‐ 27  °F ( ‐4 °C to ‐3 °C ) Off Time 45 ° F ( 7 ° C ) MDN3575BA/SA  Med Temp ‐ NSF 7 25 ° F  ( ‐ 4 ° C ) MDN4775BA/SA @ NSF Type 2 Conditions ‐ Discharge Air Temperature   controller settings  Model Product Application Discharge Air Temperature ( Avg Ref mode ) Controller Set Point ( ° F ) Defrost Frequency ( per day ) Type of Defrost Temp. Termination Failsafe time ( min ) MDN4775BA/SA  Med Temp ‐ DOE  27 ° F  (  ‐ 3 ° C ) 25 ° F ‐ 27  °F ( ‐4 °C to ‐3 °C ) Off Time 45 ° F ( 7 ° C ) MDN3575BA/SA  *Med Temp ‐ NSF 7 25 ° F  ( ‐ 4 ° C ) *Factory Setting Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 15: 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 9FQ-6-P110-075-00_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 16 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 17 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 9FQ-6-P110-075-00_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 18: 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 19: Shelves

    . Do not allow product, packages, signs, etc . to block the air inlet and air outlet . P/N 9FQ-6-P110-075-00_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 20 . and that technician advises that it is safe to return to the store . Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 21: Replacing Refrigeration

    . doors, lights, fans, heaters, and thermostats. P/N 9FQ-6-P110-075-00_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 22 . 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 . Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 23: Maintenance

    •Solvent, oil or acidic based cleaners on any interior surfaces . •Do not use high pressure water hoses . Do Use: Bumper •Remove the product and all loose debris to avoid clogging the waste outlet . Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 24: Warnings

    DO NOT DO NOT P/N 9FQ-6-P110-075-00_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com ●Do not throw products into the merchandiser. Prohibition ●Do not apply strong force against, or ●Do not put hands, apply strong ■Installation, relocation and...
  • Page 25 ●In the event of a gas leak, open a window for ventilation, and do not touch the unit or electrical hock? plug. rovider Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. on a prevent ing over.
  • Page 26: Cleaning Steel Surfaces

    This includes, but is not limited to, such items as doors, lights, fans, heaters, and thermostats. P/N 9FQ-6-P110-075-00_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 27: 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 28: Cleaning Power Plug

    Turn off power ⑤ Wicking plate MUST be changed at least once a year. and allow to cool before servicing. Wires Clip P/N 9FQ-6-P110-075-00_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 29 P/N 9FQ-6-P110-075-00_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 30: 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 9FQ-6-P110-075-00_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 31: Service

    Damage to the power cord or plug: If the cord is damaged, unplug the cord, and contact LED Driver your Hussmann representative for replacement . Do (Power Supply) not allow the the wheels of the merchandiser to rest on the cord .
  • Page 32: Troubleshooting

    (Presence or absence of a symbol on the digital display board, a symbol on the digital Symptom P/N 9FQ-6-P110-075-00_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 33: Direct Drain

    ④ ④ Pull out the unit. Unit Evaporation tray Condensing Unit Cassette ⑤ ⑤ ⑤ Remove 3 screws attached to the evaporation tray (Marked with in the gure at right.) Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 34 Refrigeration System Tray ⑨ Attach a drain hose to the socket on the upper evaporation tray. Hose Band Socket Then apply a hose band to x. Drain hose P/N 9FQ-6-P110-075-00_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 35 ● 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 36 SERVICE MDN Visual Depiction on Non-Incendive Replacement Parts Main Switch Light Switch Sealed Relay ATEX Rated Control RTN400 Control Display KDE P/N 9FQ-6-P110-075-00_B U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 37 27 9FQ0022030902 PAINTED BLACK DECK PAN ASSY MDN 3FT 28 9FQ2136047902 BLACK EXTER PANEL R290 29 3023552B CONTROL-DSPL KDE Qty per case 30 9FQ2180004702 PAINTED BLACK TRIM 91-2 N 3FT Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 38 Material 84553495 Plant/Usage/Alt. 130B / 1 / 01 Description MDN4775 MDN 4775 Replacement Parts List Item Part Number Description Qty per case 1 3089734C LED-ES ULTRA CNPY 48IN 4000K 3074549 SWITCH-TGL SPST 15A 125V mfg.1NT91-2 3 9FQ0422034100 COIL-MDN47 438-4-6-36.5 4 3037649A CAPILLARY-TUBE.054INIDX130INLG 5 9FQ2136058302 PAINTED BLACK EXTER PANEL MDN 47...
  • Page 39 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 40 Hussmann Corporation 12999 St. Charles Rock Road Bridgeton, MO 63044-2483 www.hussmann.com...

Table of Contents