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Hussmann USL-2 Installation And Service Instructions Manual
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Hussmann USL-2 Installation And Service Instructions Manual

Hussmann USL-2 Installation And Service Instructions Manual

Usl low temperature solid door reach-in for ice cream and frozen foods
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January 2006
www.hussmann.com
HUSSMANN - GLOVERSVILLE
INSTALLATION & SERVICE
INSTRUCTIONS
FOR
USL LOW TEMPERATURE
Solid Door Reach-In
for
Ice Cream and Frozen Foods
First Call for help (US and Canada):
1-800-922-1919
Soporte Tècnico y Asistencia (Mèxico):
01-800-522-1900
For a Service Network Locator and other
Information visit us at
select Worldwide Locations
P/N OII – USL
January 2006

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Summary of Contents for Hussmann USL-2

  • Page 1 First Call for help (US and Canada): 1-800-922-1919 Soporte Tècnico y Asistencia (Mèxico): 01-800-522-1900 For a Service Network Locator and other www.hussmann.com HUSSMANN - GLOVERSVILLE INSTRUCTIONS Solid Door Reach-In Information visit us at select Worldwide Locations P/N OII – USL...

  • Page 2: Table Of Contents

    Introduction, Inspection, Location, and Clearance Installation and Start-Up Skid, Leg Installation, and Top Decorative Panel Removal Cabinet Drain Shelves Air Distribution and Rear Flue Spacer Electrical Connections Serial Plate Information Start up procedure Specifications, Dimensions, Electrical and BTU Capacities General Upkeep, Care and Cleaning Routine Maintenance Power Switches, Temperature Control Thermometer, Electrical Enclosure Defrost Time Clock...

  • Page 3: Introduction, Inspection, Location, And Clearance

    INTRODUCTION - Hussmann USL models are self- contained, low temperature, vertical solid door reach-ins for the storage of ice cream and frozen foods. Design features include automatic defrost, efficient foamed in place non-CFC insulation, and balanced refrigera- tion systems for energy saving performance.

  • Page 4: Cabinet Drain

    ELECTRICAL CONNECTIONS – The USL-2 is supplied with a power supply cord with a grounding prong. Do not remove the grounding prong under any cir- cumstances.

  • Page 5: Start Up Procedure

    20 amp BTU CAPACITIES – USL-2 2280 During June ‘95, R404A refrigerant was phased into use on the USL-2. The refriger- ant charge is 46 oz. of R404A. GENERAL UPKEEP CARE and CLEANING – ance, and minimum maintenance, the cabinet should be cleaned and washed regularly as use demands.

  • Page 6: Power Switches, Temperature Control

    5. Clean the cabinet with a mild detergent. This will insure good sanitation, and mini- mize maintenance. Never use an abrasive as this could mar the finish. OPERATION and MAINTENANCE POWER SWITCHES – The power switch is located at the electrical box which is behind the top decora- tive panel.

  • Page 7: Defrost Time Clock

    boards. For servicing convenience, access is gained by removing the top decorative panel and electrical box cover. THE CABINET SUPPLY BREAKERS SHOULD BE DIS- CONNECTED BEFORE REMOVING THE ENCLOSURE COVER. The cabinet electrical supply breakers should be disconnected before removing the enclosure cover, and before service work ore maintenance of any kind is performed.

  • Page 8: Lighting

    LIGHTING – Interior lighting is provided by incan- descent lamps. The lamps have protective shields which can be removed for bulb re- placement. The lights are equipped with switches mounted in the upper left hand cor- ner of the door opening, that allow the lights to come on when the door is opened.

  • Page 9: Operational Data, Compressor And Receiver

    Because of the CFC atmospheric considerations being taken today, we ask that leak testing be done with refrigerant 22 mixed with nitrogen. If the condensing unit nameplate designates a re- frigerant other than R-22, remove all R-22 from the immediate area to avoid confusion after leak testing and evacuating the unit.

  • Page 10: Crankcase Pressure Regulator

    CRANKCASE PRESSURE REGULATOR - The USL-2 with R404a refrigerant em- ploys a crankcase pressure regulator in the suction line. The CPR is set for 12 psi. The...

  • Page 11: Trouble Shooting Charts

    TROUBLE Compressor runs continuously product too warm High head pressure Warm storage temperatures TROUBLE SHOOTING CHARTS FOR THE CASE AND LIGHTING PROBABLE CAUSE 1. Short of refrigerant 2. Inefficient compressor 3. Dirty condenser 1. Cabinet location too warm 2. Restricted condenser air flow 3.
  • Page 12 1. Contact electrician 2. Replace 3. Replace 4. Leak check, replace drier, evacuate and recharge 5. Clean condenser 6. Replace 7. Reset to 12 psi on USL-2 1. Check voltage at compres- 2. Check front to rear level- ing, adjust legs accordingly...

  • Page 13: Electrical Components List

    Incandescent Lamp WARRANTY AND PARTS INFORMATION Please read carefully to assure prompt and accurate service. Thank You ORDERING REPLACEMENT PARTS – Contact your nearest Hussmann Distributor • Always specify model and serial number of cabinet • If correct part number is not known, give a clear description of part itself and its function •...
  • Page 14 Lack of any of the above information may result in the shipment of the wrong part, or a • delay in shipment. Replacement compressors will not be shipped from the Hussmann factory. They may be • obtained from your nearest Copeland Wholesaler.