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  • Refrigeration Systems

    Installation, Use & Care ManualThis manual is updated as new information and models are released.

    Visit our website for the latest manual. www.manitowocfsg.com

    Specified #1 Among Walk-insPart Number 11325 03/08

  • Safety NoticesAs you work on Manitowoc equipment, be sure to pay close attention to the safety notices in this manual. Disregarding the notices may lead to serious injury and/or damage to the equipment.

    Throughout this manual, you will see the following types of safety notices:

    Procedural NoticesAs you work on Manitowoc equipment, be sure to read the procedural notices in this manual. These notices supply helpful information which may assist you as you work.

    Throughout this manual, you will see the following types of procedural notices:

    NOTE: Text set off as a Note provides you with simple, but useful, extra information about the procedure you are performing.

    Read These Before Proceeding:

    NOTE: SAVE THESE INSTRUCTIONS.

    ! WarningText in a Warning box alerts you to a potential personal injury situation. Be sure to read the Warning statement before proceeding, and work carefully.

    ! CautionText in a Caution box alerts you to a situation in which you could damage the equipment. Be sure to read the Caution statement before proceeding, and work carefully.

    ImportantText in an Important box provides you with information that may help you perform a procedure more efficiently. Disregarding this information will not cause damage or injury, but it may slow you down as you work.

    ! CautionProper installation, care and maintenance are essential for maximum performance and trouble-free operation of your Manitowoc equipment. Read and understand this manual. It contains valuable care and maintenance information. If you encounter problems not covered by this manual, do not proceed, contact Manitowoc Foodservice Group. We will be happy to provide assistance.

    ImportantRoutine adjustments and maintenance procedures outlined in this manual are not covered by the warranty.

    ! WarningPERSONAL INJURY POTENTIAL

    Do not operate equipment that has been misused, abused, neglected, damaged, or altered/modified from that of original manufactured specifications.

    We reserve the right to make product improvements at any time. Specifications and design are subject to change without notice.

  • Table of Contents

    Section 1 General Information

    Model Numbers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Serial Number Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

    Section 2 Installation Instructions

    Pre-installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1Location of Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

    Condensing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1Multiple Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2Walls or Obstructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

    Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2Multiple Evaporator Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

    Refrigerant Piping Hanger Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3Installing Model PR Field-charged Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

    Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3Oil Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

    Installing Model PCL Pre-charged Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

    Evaporator Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4Condenser Unit Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4Drain Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

    Walk-in Coolers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5Walk-in Freezers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

    Panel Penetrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5Charging Refrigeration System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

    Polyol Ester (POE) Lubricants (Used with HFC Refrigerants) . . . . . . . . . . 2-6Refrigerant Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6Leak Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

    Compressor Mounts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7Mounting Defrost Time Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8Post Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

    Part Number 11325 03/08 i

  • Table of Contents (continued)

    Section 3 Operation

    Component Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Start-up Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

    Defrost Time Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2Operational Checks and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

    Compressor Superheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3Evaporator Superheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4Temperature Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4Evaporator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4Defrost Time Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4Refrigerant Evacuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

    Section 4 Maintenance

    Cleaning Condensing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1Maintenance Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

    Section 5 Before Calling for Service

    Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1Evaporator Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1Compressor Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

    Equipment/Service Data Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4System Reference Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

    ii Part Number 11325 03/08

  • Section 1General Information

    Model NumbersThis manual covers the following models:

    Serial Number LocationThis number is required when requesting information from your local distributor. The serial number is listed on the SERIAL NUMBER DECAL affixed to the condensing unit assembly.

    Serial Number Location

    Pre-charged Lines Field-charged LinesPCL PR

    Serial NumberKS1005

    Part Number 11325 03/08 1-1

  • General Information Section 1

    THIS PAGE INTENTIONALLY LEFT BLANK

    1-2 Part Number 11325 03/08

  • Section 2Installation Instructions

    Pre-installation ChecklistFollow these guidelines during the installation process:

    Location of EquipmentCONDENSING UNITFor optimum air-cooled equipment performance, these are the most critical clearance requirements:

    a sufficient supply of ambient air to the condenser

    adequate space for removal of the heated discharged air from the condensing unit area

    Position the condensing unit:

    in a clean, dry, level area

    away from steam or hot air exhaust sources

    away from corrosive atmospheres

    away from noise-sensitive areas

    with adequate support to minimize undesirable vibration and noise transmission

    Check the selected installation location to ensure that racks, braces, floor, foundations, etc., are adequate to support the weight of the unit.

    Verify that system piping is in accordance with good refrigeration practices.

    When brazing refrigerant lines, pass an inert gas through the line at low pressure to prevent scaling and oxidation of the tubing. Nitrogen is recommended.

    ! CautionDo not lift the condensing unit assembly by the refrigerant tubing. Damage may result.

    ! CautionIf either clearance requirement is ignored, higher system head pr

Recommended

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