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Carrier Air 4 Life Manual

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    							R
    OPERATOR’S MANUAL
    for
    SPLIT SYSTEM
    Bus Air Conditioning Units
    T--326 Rev --
    Transport Air Conditioning
    TRANSPORT AIR CONDITIONING 
    						
    							OPERATOR’S
    MANUAL
    BUS AIR CONDITIONING
    UNITS
    GEN IV & GEN V 
    						
    							i
    CONTENTS
    Page
    Introduction 1............................
    Safety 3..................................
    Unit/System Information 4.................
    1.1 WHAT IS AIR CONDITIONING 4.............
    1.2 SPLIT SYSTEM 4..........................
    1.3 SYSTEM DESIGNATIONS 4................
    1.4 SYSTEM COMPONENTS 4.................
    1.5 MODEL AND SERIAL NUMBER TAGS 6......
    1.6 SYSTEM REQUIREMENTS LABEL 8........
    Unit Operation 9..........................
    2.1 OPERATING INSTRUCTIONS 9.............
    2.2 DRIVER’S CONTROL PANEL -- STANDARD 9.
    2.3 DRIVER’S CONTROL PANEL -- FLORIDA 10...
    2.4 PRE--TRIP INSPECTION 12..................
    System Maintenance 13....................
    3.1 Maintenance Schedule 13....................
    3.2 Warranty/Service 14.........................
    Index Index 1............................... 
    						
    							1
    INTRODUCTION
    SPLITSYSTEMOPERATOR’SMANUAL
    This guide has been prepared for the operator of Carrier Transport
    Air Conditioning systems.It contains basic instructions for the daily
    operation of the air conditioning systemas well as safety
    information, and other information that will help you to maintain a
    comfort level for your self and your passengers. Please take the
    time to read the information contained in this booklet and refer to
    it whenever you have a question about the operation of your Carrier
    Transport Air Conditioning system.
    More comprehensive information can be found in the Split System
    Operation and Service Manual (T-- 299). This manual can be
    obtained from your Carrier Transport A/C dealer.
    Your air conditioning systemhas been engineered toprovide long,
    trouble-free performance when it is properly operated and
    maintained. A comprehensive maintenance program will help to
    insure that the unit continues to operate reliably. Such a
    maintenance program will also help to control operating costs,
    increase the unit’s working life, and improve performance.
    Some Vehicles may require information from manuals supplied by
    the vehicle manufacturer or other special equipment suppliers. We
    urge you to review all these publications carefully. This will help you
    enjoy safe and trouble-- free operation of your vehicle.
    When having your unit serviced, be sure to specify genuine Carrier
    Transicold replacement parts for the highest quality and best
    reliability.
    Carrier Transport Air Conditioning Dealers know your vehicle air
    conditioningsystem best andwill ensure your complete
    satisfaction. To find the Dealer nearest you, go to
    www.transportaircon.carrier.com and click on “Dealer Locator”, or
    refer to the CarrierBus StopDealer Directory (62-- 10810) or
    contact the Carrier Transport Air Conditioning Technical Service
    Hot-- Line 1 (800) 450-- 2211.
    At Carrier Transport Air Conditioning, we are continually working to
    improve the products that we build for our customers. As a result,
    specifications may change without notice. 
    						
    							3T-- 326
    SAFETY
    Your Carrier Transport Air Conditioning system has been designed
    with the safety of the operator in mind. During normal operation, all
    moving parts are fully enclosed to help prevent injury. During all
    pre-trip inspections, daily inspections, and problem
    troubleshooting, you may be exposed to moving parts; please stay
    clear of all moving parts when the unit is in operation.
    WARNING
    Beware of unannounced starting of the unit. The unit
    may cycle the fans and operating compressor unex-
    pectedly as control requirements dictate. Turn system
    off and disconnect battery power.
    REFRIGERANT
    The refrigerant contained in the air conditioningsystem can cause
    frostbite, severe burns, or blindness when in direct contact with the
    skin or eyes. For this reason, and because of legislation regarding
    the handling of refrigerants during system service, we recommend
    that, whenever your unit requires service of the refrigeration
    system, you contact your nearest Carrier Transport Air
    Conditioning authorized dealer for service. 
    						
    							4 T-- 326
    UNIT/SYSTEMINFORMATION
    1.1 WHAT IS AIR CONDITIONING
    Air Conditioning is the cooling, heating, dehumidification, and
    filtration of the air within the passenger compartment of a vehicle.
    1.2 SPLIT SYSTEM
    A Split System normally includes an Evaporator(s), a Condenser(s)
    a Compressor(s) and interconnecting refrigerant hoses, fittings,
    and electrical harnesses and controls. A listing of the system
    components, along with specific data for each, is provided in
    Paragraph 1.4.
    1.3 SYSTEM DESIGNATIONS
    Tie-- In System --Is a Carrier evaporator and condenser connected
    to an existing OEM compressor and dash evaporator. The OEM
    radiator type condenser is normally removed.
    Max System --A Carrier system installed along with an existing
    OEM system. The systems operate independent of each other.
    Stand -- Alone (Standard) System --All Carrier components
    installed on a vehicle. These can be either single or dual
    compressor systems.
    1.4 SYSTEM COMPONENTS (Refer To Figure 1-1)
    Return Air Thermostat/Sensor --The system may be supplied
    with a thermostat or thermistor. Both of these devices are
    temperature sensitive components which when activated, signals
    the Electro-- Magnetic Clutch to engage/disengage. The return air
    thermostat is normally located in the drivers control panel while the
    return air thermistor is normally located in the return air flow of the
    evaporator assembly.
    Electro --Magnetic Clutch --The Electro-- Magnetic clutch controls
    the operation of the compressor. When engaged, the compressor
    circulates refrigerant and provides cooling.
    Compressor --The compressor is a belt driven, high-- pressure
    pump, which circulates the refrigerant through the evaporator and
    condenser . The operation of the compressor is controlled by the
    Electro-- Magnetic clutch.
    Condenser --The condenser is normally located in the skirt or on
    the roof of the vehicle. Its primary function is to reject heat, which
    was transferred to the refrigerant by the evaporator from the
    passenger compartment of the vehicle. 
    						
    							5T-- 326
    Air In
    Air OutAir In Air Out10
    1 23
    45 6 789
    1. Compressor
    2. Electro-- Magnetic Clutch
    3. Discharge Line
    4. Condenser
    5. Filter Dryer/Sight Glass
    Assembly6. Liquid Line
    7. Evaporator
    8. Block Valve (TXV)
    9. Freezestat-- (Coil
    freeze-- up thermostat)
    10. Suction Line
    Figure 1-1 Component Locations
    Filter/Dryer --The filter/dryer removes moisture and particulate
    matter from the refrigerant.
    Expansion/Block Valve --Meters the refrigerant flow into the
    evaporator coil. The majority of the Gen 4 (Excel) and all Gen 5
    systems use anonadjustable block valve with an 8°F superheat
    setting, which is preset at the factory. If you feel there is a problem
    with the block valve, do not attempt to adjust the valve, if needed,
    it should be replaced by an authorized Carrier Transport A/C
    service center.
    Evaporator --The evaporator is located in the interior of the
    vehicle. Its primary function is to transfer heat contained in the
    passenger compartment air, into the refrigerant, which is circulated
    by the compressor, through the evaporator coil. During this process
    the air is also filtered and dehumidified.
    Resistor --Resistors are used to control the speeds of the
    permanent magnet evaporator blower motors. 
    						
    							6 T-- 326 Pressure Switch --The systems use high and low pressure
    switches wired in series to control the power circuit of the
    compressor clutch relay. If either pressure switch opens,
    interrupting the circuit to the clutch relay, the operation of the
    compressor will stop. When conditions return to normal the switch
    will automatically reset and the compressor will resume operating.
    The switches are non-- adjustable.
    Freeze--Up Thermostat --Freeze-- up thermostats are used to
    prevent ice formation on the evaporator coil, which is an indication
    that liquid refrigerat is getting back to the compressor. Carrier
    Transport Air Conditioning systems use a freeze thermostat
    (freezestat) wired in series with the system pressure switches and
    thermostat/thermistor to control the operation of the compressor
    clutch.
    Refrigerant --A refrigerant is a material that is used to move heat
    from the passenger compartment to the outside air. It is a
    substance that gives up heat by condensing at high temperature
    and pressures and absorbs heat by evaporating at low
    temperatures and pressures. The heat transfer properties
    exhibited when refrigerant changes state is the foundation of the
    refrigerant cycle.
    1.5 MODEL AND SERIAL NUMBER TAGS
    In order to identify the air conditioning components you have, you
    will need to know the model number and serial number. All Carrier
    Transport Air Conditioning evaporators, condensers and
    compressors have a model/serial number tag located on the
    assembly. See Figure 1-2 for skirt mounted condenser data tag
    location, Figure 1-3 for the CM-- 7/11 rooftop condensers data tag
    location, Figure 1-4 for GEN 4 (Excel) evaporator data tag location
    and Figure 1-5 for GEN 5 evaporator data tag location. Knowing
    these locations and the information on the data tags will aid you in
    identifying the correct service procedures.
    Figure 1-2 Skirt Mounted Condensers 
    						
    							7T-- 326
    Figure 1-3 Roof Mounted Condensers
    EM-- 9 Location
    Figure 1-4 Rear/Side Mounted Gen IV Evaporators
    NOTE
    The EM-- 9 evaporator data tag is located on the side of the
    evaporator assembly, not between the blower assemblies.
    Figure 1-5 Rear/Side Mounted Gen V Evaporators 
    						
    							8 T-- 326 1.6 SYSTEM REQUIREMENTS LABEL
    The system requirements label (See Figure 1-6) is conveniently
    located within the vehicle’s engine compartment. This label, when
    properly completed by the installer, will give the servicing technician
    the refrigerant and oil charge(s), evaporator(s), condenser(s), and
    compressor(s) serial numbers, the drive belt(s) number, mount kit
    number, the date of installation and the installer.
    Figure 1-6 System Requirement Label 
    						
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