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

Md series. medium temperature self contained open vertical merchandisers
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MD
Medium Temperature
Self Contained Open Vertical
Merchandisers
MD-14
MD-10
Installation &
Operation Manual
IMPORTANT
P/N 2402646_H
Keep in store for
June 2018
future reference!
Spanish 0531297
French 0531298
MANUAL - I/O SELF CONTAINED MD

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Summary of Contents for Hussmann MD-14

  • Page 1 Æ Medium Temperature Self Contained Open Vertical Merchandisers MD-14 MD-10 Installation & Operation Manual IMPORTANT P/N 2402646_H Keep in store for June 2018 future reference! Spanish 0531297 French 0531298 MANUAL - I/O SELF CONTAINED MD...
  • Page 3 These merchandisers are designed for pre-chilled products only. IMPORTANT KEEP IN STORE FOR FUTURE REFERENCE Quality that sets industry standards! 12999 St. Charles Rock Road • Bridgeton, MO 63044-2483 U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 www.hussmann.com © 2018 Hussmann Corporation...

  • Page 5: Table Of Contents

    Key-Activated Functions ....3-7 MD-14 Wiring Diagram ... . . A-7 Typical Sensor to Control Configurations 3-8 Controls and Adjustments .

  • Page 6: Ansi Definitions

    Indicates[s] situations, which if not avoided, 7. Page A-6 & A-7-Replace diagrams with new could result in damage to equipment. revisions attached ORIGINAL ISSUE — AUGUST 2005 P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...

  • Page 7: Installation

    All equipment should be thoroughly exam- windows, etc. to create air currents around ined for shipping damage before and during the merchandiser. unloading. This equipment has been carefully MD Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 8: Self Contained (Location)

    State law. It is your responsibility to provide accurate Proposition 65 warning labels to your customers when necessary. For more information on Proposition 65, please visit the California State government website. P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...

  • Page 9: Model Description

    Determine the highest part of the floor. 2. Use a forklift or dolly to remove the merchandiser from the trailer. Do NOT remove shipping crate until the merchandiser is positioned for installation. MD Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 10: Merchandiser Leveling

    Ensure lower front panel is flat against the floor when installed to prevent air circula- tion problems on self contained merchandisers. P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...

  • Page 11: Electrical / Refrigeration

    • Do not use long or thin extension cords. Never use adapters. • If in doubt, call an electrician. Merchandiser must be grounded. Do not remove the power supply cord ground. MD Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 12: Refrigeration (Self Contained Models)

    When brazing pipes, be sure to use the insulation blanket shipped with the merchandiser to prevent damage to the metal merchandiser bottom. P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...

  • Page 13: Start Up / Operation

    P/N 2402646_H START UP / OPERATION MD-10 & MD-14 CONTROLLER OPERATION The electronic controller is located in the This cabinet temperature may reflect the cassette compartment. The controller comes refrigeration cycle of the Set-Point and it’s Differential. The most accurate temperature factory set, and is ready for use.
  • Page 14 In absence of external power, the clock battery will last 3 years. FURTHER INFORMATION INPUT CHARACTERISTICS P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com NTC: -50.0°C ... +110°C; PTC: -55.0°C ... +150°C; PT1000: -60.0°C ... +150°C Measurement range: (on 3-digit display with +/- sign) Accuracy: ±1.0°...
  • Page 15 This means, for example, that the error introduced by the probe must be added to the error of the instrument. RTN400 Page 7/130 MD Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 16: Connections

    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. P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com RTN400 Page 8/130...

  • Page 17: Led

    When the instrument is powered on it performs a lamp test, during which time the display and LEDs will flash for several seconds to check that they all function correctly. MD Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 18: Kdeplus Buttons

    Opens the Programming Menu start-up it enables • Opens Machine Status menu (User and Installer parameters) the user to select the • Confirms commands application to be loaded. P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...

  • Page 19: Setpoint: Setting And Edit Lock

    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. MD Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. RTN400 Page 21/130...
  • Page 20 RTN400 SM NEUTRO LINE OUT2 OUT3 RS-485 MODULE OUT1 OPTIONAL OUT4 Evaporator Sensor Orange Defrost Termination Evaporator Sensor Orange Sensor Location Defrost Termination Sensor Location Green Control Air Sensor P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 21 OUT2 OUT3 RS-485 MODULE OUT1 OPTIONAL OUT4 ISOMETRIC Orange Evaporator Sensor Defrost Termination Sensor Location 9.437 DETAIL B 18.000 DETAIL D DETAIL C SECTION A-A 0522934 B SECTION B-B MD Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 22 This all local building and health codes. includes, but is not limited to, such items as doors, lights, fans, heaters, and thermostats. Rear of Controller P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...

  • Page 23: Shelves

    LOAD LIMIT t no time should merchAndisers be stocked beyond the loAd limits indicAted o not block dischArge Air louvers MD Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 24: Thermometer

    Do not break or puncture fluorescent lamps. Dispose of, or store, all fluorescent lamps in accordance with Federal (40 CFR 273), State, and local hazardous waste requirements. Refer to http://www.epa.gov/mercury/about.htm P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...

  • Page 25: Maintenance

    •Allow merchandisers to dry before resuming operation. •After cleaning is completed, turn on power to the merchandiser. Product will be degraded and may spoil if allowed to sit in a non-refrigerated area. MD Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 26: Cleaning Under Fan Plenum

    This includes, but is not limited to, such items as doors, lights, fans, heaters, and thermostats. P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...

  • Page 27: Cleaning Coils

    (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. MD Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 28: Cleaning Evaporation Pan

    2. Clean area. 3. Apply vinyl or car wax and polish surface for a smooth glossy finish. P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com P/N 2402646_G U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...

  • Page 29: Service

    Product will be degraded and may spoil if Note: Plenum length allowed to sit in a non-refrigerated area. and number of fans will vary with model. MD Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 30: Replacing Electronic Ballasts/Led Power

    Federal (40 CFR 273), State, and local includes, but is not limited to, such items as hazardous waste requirements. Refer to doors, lights, fans, heaters, and thermostats. http://www.epa.gov/mercury/about.htm Remove Plastic Pins Attaching Display Lamp P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 31 Safety Sleeve 06S07417 Safety Sleeve 06S07414 Light Switch 1801241000 LED Light 3’ 0515963 LED light 4’ 0515965 LED Power Supply 0518898 LED lamp Holders 1803376 Light Clips (LED) 0518906 MD Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 32 130451 Shelf 130452 30S8151 30S8152 Bottom Back Shelf 130221 Bottom Back Shelf 130222 Bottom Front Shelf 0210214 Bottom Front Shelf 0210215 All these part numbers are painted assemblies P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 33 MD — Plan View Dimensions shown as inches and (mm). (213) DRAIN (108) REFRIGERATION OUTLET ELECTRICAL OUTLET (435) (197) Front of Merchandiser (102) (98) Model Length MD-10 39" MD-14 52" MD Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 34: Cross Section

    (Btu/hr at std. rating conditions) DEFROST DATA Frequency (hr) fftime Failsafe (minutes) Defrost Termination 50°F Temperature PHYSICAL DATA Refrigerant Charge MD-10 (R134a) 22.928 oz 0.65 kg MD-14 (R134a) 36.261 oz 1.028 kg P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...

  • Page 35: Electrical/Product Data

    AHRI Total Display Area (Sq Ft/Case) 15.79 ft /case ( 4.81 m /case) Computed using AHRI 1200 standard methodology: Total Display Area, ft ] / Unit of Length, ft [m] MD Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 36 EVAPORATOR SHELF LED BALLAST LAMP ELECTRIC BOX SWITCH BALLAST S1 S2 0521458_F MAIN LEVEL SWITCH RELAY SWITCH NEMA 6-15 P T STAT CONDENSER 230 V LIMIT HEATER 60HZ P/N 2402646_H U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com...
  • Page 37 10 11 12 1314 RELAY EVAPORATOR LAMP ELECTRIC BOX SWITCH BALLAST S1 S2 MAIN LEVEL SWITCH RELAY SWITCH 0521458_E NEMA 6-15 P T STAT CONDENSER 230 V LIMIT HEATER 60HZ MD Open Vertical Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 38 To obtain warranty information or other support, contact your Hussmann representative. Please include the model and serial number of the product. Hussmann Corporation, Corporate Headquarters: Bridgeton, Missouri, U.S.A. 63044-2483 01 October 2012...

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Md-10

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