Truck/Trailer Refrigeration Unit - Sunbelt Transport Refrigeration

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SECTION 5ELECTRICAL SCHEMATIC WIRING DIAGRAM5.1 INTRODUCTIONThis section contains Electrical Schematic Wiring Diagrams covering the Models listed in Table 1-1. The followinggeneral safety notices supplement the specific warnings and cautions appearing elsewhere in this manual. They arerecommended precautions that must be understood and applied during operation and maintenance of the equipmentcovered herein.WARNINGBeware of unannounced starting of the fans, V-belts and belt driven components as the unit may startautomatically. Before servicing unit, make sure the Run - Stop switch is in the STOP position. Alsodisconnect the negative battery cable.WARNINGBeware of unannounced starting of the fans and V-belts caused by the thermostat and the start/stopcycling of the unit.WARNINGUndernocircumstancesshouldetheroranyotherstartingaidsbeusedtostartengine.CAUTIONUnder no circumstances should anyone attempt to repair the Logic or Display Boards! (see section4.21) Should a problem develop with these components, contact your nearest Carrier Transicolddealer for replacement.CAUTIONObserve proper polarity when installing battery, negative battery terminal must be grounded.Reverse polarity will destroy the rectifier diodes in alternator. As a precautionary measure,disconnect positive battery terminal when charging battery in unit. Connecting charger in reverse willdestroy the rectifier diodes in alternator.CAUTIONUnder no circumstances should a technician electrically probe the processor at any point, other thanthe connector terminals where the harness attaches. Microprocessor components operate atdifferent voltage levels and at extremely low current levels. Improper use of voltmeters, jumper wires,continuity testers, etc. could permanently damage the processor.CAUTIONMost electronic components are susceptible to damage caused by electrical static discharge (ESD).In certain cases, the human body can have enough static electricity to cause resultant damage to thecomponents by touch. This is especially true of the integrated circuits found on the truck/trailermicroprocessor.5-1 62-02884
62-028845-2Figure 5-1. <strong>Truck</strong> <strong>Unit</strong>s --- Electrical Schematic Wiring Diagram Dwg. No. 62-60251 (Sheet 1 of 2)
Page 5 and 6:
TABLE OF CONTENTS (CONT’D)Section
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LIST OF ILLUSTRATIONSFigurePage4-18
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61 2 3 4 57 811 1091. Muffler2. Eng
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213 4 58 106793 41. Run-Stop Switch
Page 13 and 14:
113214345678910151617111812191. Mai
Page 15 and 16:
1231. Fault Light2. Standby Power L
Page 17 and 18:
e. EvaporatorsThe compartments of t
Page 19 and 20:
1.2 ENGINE DATAEngine Model CT4-134
Page 21 and 22:
1.7 SAFETY DEVICESSystem components
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2 3 4 5 6 7 8 9 101FUNCTIONO ISETPO
Page 25 and 26:
1.8.6 FUNCTIONAL PARAMETERSThe func
Page 27 and 28:
Engine HoursThe number of diesel en
Page 29 and 30:
Coolant Temperature Sensor AlarmThe
Page 31 and 32: g. Minimum On-TimeThe engine is all
Page 33 and 34: 1.12.3 Hot Gas Bypass Unloadera. Ma
Page 35 and 36: 1.14 REFRIGERANT CIRCUIT DURINGCOOL
Page 37 and 38: 1614513LSV31715HGV31614513LSV21715H
Page 39 and 40: 1614513LSV3 (NC)1715HGV3 (NC)161451
Page 41 and 42: 2.2.2 MANUAL STARTINGa. Starting In
Page 43 and 44: 2.6 CONTROL CIRCUIT OPERATION --STA
Page 45 and 46: FALLING TEMPERATURERISING TEMPERATU
Page 47 and 48: 62-028842-8Table 2-3. 3 Compartment
Page 49 and 50: INDICATION/TROUBLEPOSSIBLE CAUSESRE
Page 55 and 56: 4.2 MAINTENANCE SCHEDULE (TRAILER)U
Page 57 and 58: 1105432shaft). Energize solenoid fo
Page 59 and 60: . Electrical Pump (See Figure 4-4)T
Page 61 and 62: a. Alternator V-Belts (Trailer Unit
Page 63 and 64: 4.7 PUMPING THE UNIT DOWN ORREMOVIN
Page 65 and 66: 1. Suction Line2. Equalizer Line3.
Page 67 and 68: k. Slide compressor enough to clear
Page 69 and 70: . Solenoid Coil ReplacementNOTEThe
Page 71 and 72: 4.18.2 Solenoid Valve -- Sporlana.
Page 73 and 74: 4.22 CONFIGURATION OF MICROPROCESSO
Page 75 and 76: 4.25 5KW GENERATOR -- TRAILERThe 5K
Page 77 and 78: 4.27 SERVICING PHASE SEQUENCEWARNIN
Page 79 and 80: 4.30 THERMOSTATIC EXPANSION VALVETh
Page 81: Table 4-7. R-404A Pressure -- Tempe
Page 85 and 86: 5-4Figure 5-2. Truck Units --- Elec
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Truck/Trailer Refrigeration Unit - Sunbelt Transport Refrigeration

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