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Federal LMDM4878 Installation & Operation Manual

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E3924-20
REV - 2/21/25
INSTALLATION & OPERATIONS MANUAL
KEEP THIS MANUAL FOR FUTURE REFERENCE
Engineering and technical data are subject to change without notice.
FEDERAL INDUSTRIES
Toll Free 1(800) 356-4206
LMDM E3924-20
FEDERAL INDUSTRIES
LMDM4878
P.O. Box 290
WI Phone (608) 424-3331
Belleville, WI 53508
Fax: (608) 424-3234
- 1 -

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  • Page 1 E3924-20 REV - 2/21/25 FEDERAL INDUSTRIES LMDM4878 INSTALLATION & OPERATIONS MANUAL KEEP THIS MANUAL FOR FUTURE REFERENCE Engineering and technical data are subject to change without notice. FEDERAL INDUSTRIES P.O. Box 290 Belleville, WI 53508 Toll Free 1(800) 356-4206 WI Phone (608) 424-3331...

  • Page 2: Table Of Contents

    Contents INTRODUCTION ................................. 3 WARNING LABELS & SAFETY INSTRUCTIONS ....................4 REFRIGERATION WARNING ..........................5 INSTALLATION-REPAIR-DECOMMISSIONING ....................5 PRE-INSTALLATION PROCEDURES ........................11 INSPECTION FOR SHIPPING DAMAGE ......................11 INSTALLATION INSTRUCTIONS .......................... 11 LOCATING THE DISPLAY CASE ........................11 Clearances ................................12 REMOVING PACKAGING MATERIAL ......................

  • Page 3: Introduction

    INTRODUCTION Thank you for purchasing a Federal Industries display case. This manual contains important instructions for installing and servicing the LMDM Model. A repair parts list and wiring diagram is also included in the manual. Read these documents carefully before installing or servicing your case.

  • Page 4: Warning Labels & Safety Instructions

    NOTICE: message, you may damage your case. The warning and safety labels shown throughout this manual are placed on your Federal Industries case at the factory. Follow all warning label instructions. If any warning or safety labels become lost or damaged, call our customer service department at 1(800) 356-4206 for replacements.

  • Page 5: Refrigeration Warning

    Risk of fire or explosion. Flammable refrigerant used. To be repaired only by trained service personnel. Do not puncture refrigerant tubing. Dispose of properly in accordance with federal or local regulations Consult repair manual/owner’s guide before attempting to service this product. All safety precautions must be followed.
  • Page 6 3. Qualification: All refrigeration and electrical maintenance, service, and repair must be performed by a Certified Technician that is trained in the required flammable refrigerants safety procedures. Technicians must read the entire section “REFRIGERATION WARNINGS SECTION” of this manual. Including but not limited to the following: a) breaking into the refrigerating circuit.
  • Page 7 -Work shall be undertaken under a controlled procedure to minimize the risk of a flammable gas or vapor being present while the work is being performed. -All maintenance staff and others working in the local area shall be instructed on the nature of the work being carried out.
  • Page 8 5. Repairs to sealed components -During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being worked upon prior to any removal of sealed covers, etc. If it is necessary to have an electrical supply to equipment during servicing, then a permanently operating form of leak detection shall be located at the most critical point to warn of a potentially hazardous situation.
  • Page 9 9. Removal and Evacuation: When breaking into the refrigerant circuit to make repairs-or for any other purpose-conventional procedures shall be used. However, for flammable refrigerants it is important that the best practice be followed, since flammability is a consideration. The following procedure shall be adhered to: a.
  • Page 10 e. If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system. f. Make sure that the cylinder is situated on the scales before recovery takes place. g. Start the recovery machine and operate in accordance with instructions. h.

  • Page 11: Pre-Installation Procedures

    PRE-INSTALLATION PROCEDURES INSPECTION FOR SHIPPING DAMAGE You are responsible for filing all freight claims with the delivering truck line. Inspect all cartons and crates for damage as soon as they arrive. If damage is noted to shipping crates, cartons, or if a shortage is found, note this on the bill of lading (all copies) prior to signing.

  • Page 12: Clearances

    Clearances This case has a top mounted condensing unit and requires air movement above the case. The case must be operated in a room with a minimum of 8’ ceilings. This allows a minimum of 18” from top of case to ceiling, which allows the warm air to dissipate. If this case is to be located against a wall there should be at least 6”...

  • Page 13: Removing Case From Shipping Skid

    REMOVING CASE FROM SHIPPING SKID There are (2) 1/4” screws located in the front base rail and (2) ¼ screws in the rear base rail that secure the case to the skid during shipping. The rear base panel and front kick plate will need to be removed to gain access to these screws.

  • Page 14: Lifting Case

    LIFTING CASE CAUTION Care must be taken not to damage or tip the case when removing it from the skid. CONDENSATE PAN CONDENSATE DRAIN FLOOR LOCK CONDENSATE FAN ELECTRICAL BOX 20.4 11.5 CONDENSATE DRAIN CASTER REAR FORK REAR FORK REAR FORK CLEARANCE LIFT AREA LIFT AREA...

  • Page 15: Moving Case

    MOVING CASE Before moving the case, it is important to hook the power cord up off floor to prevent running over the cord with the case. There is a cord hook strap provided on upper back of case. Loop cord over hook to prevent it from dragging. CORD HOOK Casters are supplied from the Factory to allow the case to be moved to different locations.

  • Page 16: General Electrical & Grounding

    GENERAL ELECTRICAL & GROUNDING IMPORTANT: Read this Section of this manual located on page 5. “REFRIGERATION WARNING &INSTALLATION-REPAIR-DECOMMISSIONING” All refrigeration and electrical work must be performed by certified technicians. DANGER: Improper or faulty hookup of electrical components in the display case can result in severe injury or death. POWER CORD CORD CONNECTED SELF CONTAINED...

  • Page 17: Panel Removal For Electrical Access

    PANEL REMOVAL FOR ELECTRICAL ACCESS DANGER: Electric shock hazard. Disconnect power before removing panels. Do not operate unit with panels removed. Panels must be in place when operating unit Electrical Component Cover Rear Base Panel POWER SUPPLY LIGHT ELECTRONIC CONDENSATE FAN SWITCH CONTROL CLEAN...

  • Page 18: Refrigeration

    REFRIGERATION CHARGE AND SETTINGS WITH ELECTRONIC CONTROL LMDM4878SC Refrigerant R290 Low Pressure Switch Cut In 15 psi Low Pressure Switch Cut Out 4 psi High Pressure Switch Cut Out 350 psi SELF-CONTAINED REFRIGERATION OPERATION The unit temperature is controlled by an electronic control that senses air temperature and turns refrigeration on and off as required to maintain proper temperature.

  • Page 19: Base Component Layout

    BASE COMPONENT LAYOUT LMDM E3924-20 - 19 -...

  • Page 20: Feature Operation

    FEATURE OPERATION NIGHT CURTAIN OPERATION The Night Curtain is standard on all LMDM models. It is provided to conserve energy when case is not being used. NOTE: To prevent sweating the Night Curtain must be closed before rolling down the optional Roll Down Cover or Installing the optional Security Cover.

  • Page 21: Removable Security Cover Operation (Optional)

    REMOVABLE SECURITY COVER OPERATION (OPTIONAL) Security Cover allows product to remain in case while case is unattended. It must be removed and stored in different location while case is in use. NOTE: When using optional Security Cover the Night Curtain must be pulled down to the closed position.

  • Page 22: Roll Cover Operation

    ROLL COVER OPERATION (OPTIONAL) The Roll Down Cover rolls down over product to allow product to remain in case while case is unattended and it rolls up out of the way while case is in use. NOTE: When using optional Roll Cover the Night Curtain must be pulled down to the closed position.

  • Page 23: Rear Door (Optional)

    REAR DOOR (OPTIONAL) IMPORTANT: Do not leave either the inner or outer doors open. Both inner and outer doors must always be closed during operation. Only open the doors for a short time to load case and then close both the inner and outer doors immediately.

  • Page 24: Shelving

    SHELVING The LMDM has 1 tiers of solid metal shelves as standard. Some cases may be provided with additional optional shelves. These shelves may be different depth than the standard shelf. If the shelves have different depths the deepest shelf goes on the bottom and shallowest goes on the top.

  • Page 25: Led Lights

    LED LIGHTS 1. The shelf light(s) are attached to the front underside of the shelf and the top light is in front of the air discharge diffuser. They are held in place with double sided adhesive. If light must be replaced the old adhesive must be removed with adhesive remover and new adhesive must be used with new Led light.

  • Page 26: Operating Instructions

    OPERATING INSTRUCTIONS POWER CLEAN CONDENSER CONTROL LIGHT SWITCH SWITCH FILTER LIGHT CONTROL DESCRIPTION Controls are located in the upper left side of case above the display case opening. Power Switch The unit has a power switch that turns off power to the entire unit, including the condenser unit and the lights.

  • Page 27: Setting Electronic Temperature Control

    SETTING ELECTRONIC TEMPERATURE CONTROL Button Overview Power on/off: Press and hold to turn system on or off. Set: Press and hold to enter the set point adjustment menu. Defrost: Press and hold to initiate a manual defrost. Up: Change set points when in set point adjustment menu.
  • Page 28 Powering on control To turn refrigeration control power on, press and hold “ ” for approx. three seconds. When the control power turns on, the display will read the cabinet probe temperature. The compressor and condenser fan run indicators ( & ) will illuminate on the display, meaning that the compressor and condenser fan are running.

  • Page 29: Electronic Control Operation

    Display Description Cause Resolution • Check to ensure probe wires and quick disconnect are Air discharge secure in control. “P1” temperature • Check probe resistance to table below. If 0 resistance is Probe signal probe failure present, check wiring insulation. If infinite resistance is is interrupted present, check for breaks in wiring (meter will likely read or short-...

  • Page 30: Initial Start-Up

    INITIAL START-UP After all the checks outlined in the installation section of this manual have been made, the case is ready to be put into service. Turn on the Power at the breaker box and flip the Power Switch and Light Switch on unit to the on position. At start up from a warm unit, it is recommended that the temperature control is set at a warm setting, such as 1 on the control.

  • Page 31: Maintenance

    NOTE: Do not clean the filter in a dishwasher. 4. Apply a generous coat of filter adhesive to both sides of the Filter. Recommended filter adhesive is Federal Ind. PN 22-21164 available from Partstown. The filter is pre-coated from the factory with this product.

  • Page 32: Cleaning The Condenser Filter

    IMPORTANT: It is also necessary to check and clean the front of the condenser coil every 6 months or as necessary. Refer to the instructions outlined in Condenser Cleaning section of this manual. CLEANING THE CONDENSER FILTER CONDENSER COIL FACE CONDENSER COVER FILTER...

  • Page 33: Cleaning Instructions

    CLEANING INSTRUCTIONS DAILY CLEANING The case should be cleaned thoroughly, as described in the weekly cleaning section, before it is used for the first time. NOTICE: Avoid splashing or soaking any electrical components with water to prevent electrical damage to the case. NOTICE: Shut off lights, disconnect power and remove all products from case.

  • Page 34: Weekly Cleaning

    WEEKLY CLEANING NOTICE: Shut off lights and disconnect power and remove all products from case. Allow sufficient time for the unit to reach room temperature before proceeding with cleaning. NOTICE: Avoid splashing or soaking any electrical components with water to prevent electrical damage to the case. NOTICE: Remove all products from case before proceeding with cleaning procedure.
  • Page 35 1. Remove the Acrylic Air Deflector by lifting it up and out of Air Deflector Retainer. Clean as described: IMPORTANT: Cleaning the clear acrylic plastic front air deflector requires special care to prevent hazing and yellowing of material. Clean as described in “Acrylic Air Deflector Cleaning”...
  • Page 36 THUMB SCREW THUMB SCREW RETAINER RETAINER AIR DIFFUSER AIR DIFFUSER 11. Remove the honeycomb air diffuser(s) from upper air duct track. Loosen thumb screws on Retainer located behind diffuser. Retainer will drop down allowing diffuser to be pulled out of case. 12.

  • Page 37: Catch Pan Cleaning

    CATCH PAN CLEANING This case is provided with a Front Catch Pan on all cases and an additional Rear Catch Pan for cases with rear door option. The Catch Pans are provided to catch milk when a carton breaks open while inside of case. If a spill is observed these Catch Pans must be cleaned immediately.

  • Page 38: Service Information

    Phone: (800) 356-4206 and choose the Warranty Parts Option Email: Parts@Federalind.com Federal Industries has partnered with Parts Town for ALL Non-Warranty Part Identification, Pricing, Lead Times, Orders & Freight Quotes. Please contact Parts Town directly if you need parts: Website: PartsTown.com...

  • Page 39: Pre-Service Checklist

    (HFOC’s) from being released into the atmosphere. If moisture or liquid is observed around or under a Federal Industries case, an immediate investigation should be made by qualified personnel to determine the source of the moisture or liquid.
  • Page 40 Case Temperature Too Warm Check that the cold air inlet and outlet slots are not blocked. Check for a blocked or dirty condenser coil. Check for cold airflow. Lack of adequate cold airflow could indicate a defective evaporator fan or a blocked evaporator coil. Check that paper or foreign materials are not blocking evaporator.

  • Page 41: Sale & Disposal

    All refrigeration and electrical work must be performed by certified technicians. If you the owner sells or gives away this Federal Industries case it is the owner’s responsibility to make sure that all safety labels and the Installation-Service Manual are included with it.

  • Page 42: Parts List

    DEFLECTOR,AIR FRONT 1 15-20030-1 NIGHT CURTAIN 1 65-19464 SECURITY COVER (OPTIONAL) (COVER ONLY) 1 SA5980-1 DECAL,CATION ELECTRICAL SHOCK 2 91-12340 LOGO,FEDERAL 1 91-72523 REAR DOORS (OPTIONAL) DOOR OUTER, OUTSIDE (CLEAR/GRAY) 1 53-21169-1 DOOR OUTER, INSIDE (CLEAR/GRAY) 1 53-21170-1 DOOR OUTER, OUTSIDE (REFL/GRAY)

  • Page 43: Wiring Diagrams

    WIRING DIAGRAMS LMDM48 LMDM E3924-20 - 43 -...
  • Page 44 APP’D CHANGE RECORD DATE ECN# RELEASED 2/21/25 3938 California Residents Only. WARNING This product can expose you to chemicals including chromium which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov LMDM E3924-20...

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