Hussmann microSC MNGSC8-A Installation & Operation Manual

Hussmann microSC MNGSC8-A Installation & Operation Manual

Medium temperature self contained island merchandisers

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®
MNGSC8-A
Medium Temperature Self Contained
Island Merchandisers
WARNINGS:
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 has
Installation &
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
PROPERTY DAMAGE.
P/N 3113125_A
IMPORTANT
January 2019
Keep in store for future reference!
Spanish 3113126
MANUAL- I/O SELF-CONTAINED MNGSC8A

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Summary of Contents for Hussmann microSC MNGSC8-A

  • Page 1 ® MNGSC8-A Medium Temperature Self Contained Island Merchandisers WARNINGS: 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 • 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 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 3: Table Of Contents

    KDEPLUS Buttons . . . . . . . . . . . . . . . . . . 3-4 Hussmann Product Control . . . . . . . . . . . 1-1 Setpoint: Setting and Edit Lock .
  • Page 4: Ansi Z535.5 Definitions

    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 © 2020 Hussmann Corporation P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 5: Installation

    65°F (18°C) to 80°F (26.7°C). or damage must be made to the carrier . The Maximum relative humidity is 55%. carrier will provide any necessary inspection reports and/or claim forms . MNGSC8-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 6: Self Contained Location

    Case ventilation openings must be temperature operation . These models have upper clear of any obstructions. Do not glass on all four sides of the merchandiser . damage the refrigerant circuit. P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 7: Unloading

    Do NOT remove shipping skid until refrigeration system and to ensure proper the merchandiser is positioned for drainage of defrost water . installation. MNGSC8-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 8: Serial Plate Location

    . The panel is installed panel . by reversing the above procedure . Ensure merchandiser base is properly installed on case to prevent air circulation problems . P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 9: 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 10 NOTES: P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 11: Electrical / Refrigeration

    • If in doubt, call an electrician . 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 . MNGSC8-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 12: Refrigeration System Layout

    . At the same time, refrigerant temperature drops, increasing system capacity . Figure A. Machine Compartment Layout Figure B. Refrigeration Circuit #1 (left side) P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 13: Before Beginning Any Service Or Repair

    — the Refrigeration lines are under pressure. inside of the displays case and the inside of the Refrigerant must be recovered before refrigeration system . attempting any connection or repair. MNGSC8-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 14: Replacing Refrigeration Components

    3 . Tap system with line tap valves, attaching gauges to to the system to purge it with nitrogen . the high and low sides of the system . P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 15: Charging

    This includes, but is not limited to, such items as doors, lights, fans, heaters, and thermostats. MNGSC8-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 16: Waste Outlet And Water Seal

    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 . P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 17: Installing Drip Piping

    . Product will be degraded and may spoil if allowed to sit in a non-refrigerated area. MNGSC8-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 18: Drip Piping Lineup Arrangements

    . Each merchandiser age. waste outlet must be individually piped to a hub drain if in . drip piping pitch cannot be maintained . P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 19: Start Up / Operation

    . 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 . MNGSC8-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 20: Connections

    Not Used TTL Unicard/DMI/Multi Function Key connection 34-35-36 RS485. Connection 1 - Supervision Gateway. OUT4 Shared Terminal N.O. OUT4 37-38-39 RS485. Connection 2 - Supervision Gateway. P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com RTN400 Page 8/130...
  • Page 21: 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. MNGSC8-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. RTN400 Page 16/130...
  • Page 22: Kdeplus Buttons

    (if active) 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 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 23: 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. MNGSC8-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. RTN400 Page 21/130...
  • Page 24: Typical Sensor Location

    If for any reason, the sensors are removed, they need to be placed in the original location. Defrost Sensor located in middle of Evaporator Coil. EVAPORATOR (ISOMETRIC REAR VIEW) Protective Tube DETAIL B P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 25 To ensure a thorough defrost, defrost must be discharge louver . terminated by the temperature termination setting — not by time . MNGSC8-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 26: Load Limits

    These models have a thermometer . The thermometer is located at the top, interior of ir discharge and return flues must the merchandiser . remain open and free of oBstruction at P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 27 US FDA Food Code Required Thermometer Thermometer — Hussmann Part TM.4911251 Hussmann Corporation • 12999 St. Charles Rock Road • Bridgeton, MO 63044-2483 U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com © 2007 Hussmann Corporation Hussmann P/N 0429971_C 10/2007 MNGSC8-A Self Contained Merchandisers HUSSMANN CORPORATION •...
  • Page 28 Questions about either code should be addressed to local agencies or other appropriate officials. Keep with merchandiser or give to store manager. DO NOT DESTROY. P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 29: Maintenance

    •Do not use high pressure water hoses . 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. MNGSC8-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 30: Removing Scratches From Bumper

    3 . After cleaning, replace in reverse order . includes, but is not limited to, such items as Damaged honeycomb must be replaced . doors, lights, fans, heaters, and thermostats. P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 31: Cleaning Stainless Steel Surfaces

    . If any of these signs are present, it is time to replace Use alkaline chlorinated or non-chlorine the air filter . Contact your Hussmann containing cleaners such as window cleaners representative to purchase new air filters .
  • Page 32: Cleaning Evaporation Pan

    Evaporation Pan is Hot! – and poses risk of bodily injury Always Wear gloves and protective eye wear when servicing. Turn off evaporation pan heater, and allow pan to cool. P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 33: Maintenance Check List

    Verify unit doors and lids work and are sealed correctly. Verify that all the panels, shields and covers are in place. Technician Notes: 0525210_C Form HSCW03 Rev-29 OCTOBER13 MNGSC8-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 34 NOTES: P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 35: Service

    . Plenum Product will be degraded and may spoil if allowed to sit in a non-refrigerated area. Note: Plenum length and number of fans will vary with model. MNGSC8-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 36: Troubleshooting Guide

    2 . Control sensing element not 2 . Assure proper contact in positive contact 3 . Leak check, replace drier 3 . Short on refrigerant evacuate and recharge P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 37 . 2 . Check the ventilation inside 2 . Sdef probe is detached the store . 3 . Air currents that alter the circulation of refrigerated air . MNGSC8-A Self Contained 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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