Carrier transicold 69nt40-531 series User manual

T-292 Rev C Change 03/05

Carrier

Transicold

Container

Refrigeration

Operation

& Service

Models

69NT40-531-001 to 199

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OPERATION AND SERVICE MANUAL

CONTAINER REFRIGERATION UNIT

MODELS

69NT40-531-001 to 199

Carrier Transicold. A member of the United Technologies Corporation family. Stock symbol UTX.

Carrier Transicold Divsion, Carrier Corporation, P.O. Box 4805, Syracuse, N.Y. 13221 U. S. A.

ã2003 CarrierCorporation DPrinted in U. S. A. 04/03

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Safety-1

SAFETY SUMMARY

GENERAL SAFETY NOTICES

The following general safety notices supplement the specific warnings and cautions appearing elsewhere in this

manual. They arerecommendedprecautions thatmust beunderstoodandappliedduringoperationandmaintenance

of the equipment covered herein. The general safety notices are presented in the following three sections labeled:

First Aid, Operating Precautions and Maintenance Precautions. A listing of the specific warnings and cautions

appearing elsewhere in the manual follows the general safety notices.

FIRST AID

An injury, no matter how slight, should never go unattended. Always obtain first aid or medical attention immediately.

OPERATING PRECAUTIONS

Always wear safety glasses.

Keep hands, clothing and tools clear of the evaporator and condenser fans.

No workshould beperformed onthe unit untilall circuit breakers, start-stop switches are turned off, and power supply

is disconnected.

Always work in pairs. Never work on the equipment alone.

In case of severe vibration or unusual noise, stop the unit and investigate.

MAINTENANCE PRECAUTIONS

Beware of unannounced starting of the evaporator and condenser fans. Do not open the condenser fan grille or

evaporator access panels before turning power off, disconnecting and securing the power plug.

Be sure poweris turned off before working on motors, controllers, solenoid valves and electrical control switches. Tag

circuit breaker and power supply to prevent accidental energizing of circuit.

Donotbypassanyelectricalsafetydevices,e.g.bridginganoverload,orusinganysortofjumperwires.Problemswith

the system should be diagnosed, and any necessary repairs performed, by qualified service personnel.

Whenperforminganyarc weldingontheunit orcontainer,disconnect allwire harnessconnectors fromthemodulesin

both control boxes. Do not remove wire harness from the modules unless you are grounded to the unit frame with a

static safe wrist strap.

In case of electrical fire, open circuit switch and extinguish with CO2(never use water).

SPECIFIC WARNING AND CAUTION STATEMENTS

To help identify the label hazards on the unit and explain the level of awareness each one carries, an explanation is

given with the appropriate consequences:

DANGER -- means an immediate hazard which WILL result in severe personal injury or death.

WARNING -- means to warn against hazards or unsafe conditions which COULD result in severe personal injury or

death.

CAUTION -- means to warn against potential hazard or unsafe practice which could result in minor personal injury,

product or property damage.

The statements listed below are applicable to the refrigeration unit and appear elsewhere in this manual. These

recommended precautions must be understood and applied during operation and maintenance of the equipment

covered herein. WARNING

Beware of unannounced starting ofthe evaporatorand condenser fans. The unit may cycle the fans

and compressor unexpectedly as control requirements dictate.

WARNING

Donotattempttoremovepowerplug(s)beforeturningOFFstart-stopswitch(ST),unitcircuitbreak-

er(s) and external power source.

WARNING

Make sure the power plugs are clean and dry before connecting to any power receptacle.

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Safety-2

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WARNING

Make sure that the unit circuit breaker(s) (CB-1 & CB-2) and the START-STOP switch (ST) are in the

“O” (OFF) position before connecting to any electrical power source.

WARNING

Never use air for leak testing. It has been determined that pressurized, mixtures of refrigerant and air

can undergo combustion when exposed to an ignition source.

WARNING

Make sure power to the unit is OFF and power plug disconnected before replacing the compressor.

WARNING

Before disassembly of the compressor make sure to relieve the internal pressure very carefully by

slightly loosening the couplings to break the seal.

WARNING

Oakite No. 32 is an acid. Be sure that the acid is slowly added to the water. DO NOT PUT WATER INTO

THE ACID -- this will cause spattering and excessive heat.

WARNING

Wearrubberglovesandwashthesolutionfromtheskinimmediatelyifaccidental contact occurs. Do

not allow the solution to splash onto concrete.

WARNING

Always turn OFF the unit circuit breakers (CB-1 & CB-2) and disconnect main power supply before

working on moving parts.

WARNING

Make sure power to the unit is OFF and power plug disconnected before removing capacitor(s).

WARNING

With power OFF discharge the capacitor before disconnecting the circuit wiring.

WARNING

Donotuseanitrogencylinderwithoutapressure regulator. Do not use oxygen in or near a refrigera-

tion system as an explosion may occur.

WARNING

Do not open the condenser fan grille before turning power OFF and disconnecting power plug.

WARNING

The Unit Power Plug Must Be Disconnected To Remove Power From Circuit Breaker Cb1

CAUTION

Do not remove wire harnesses from controller modules unless you are grounded to the unit frame

with a static safe wrist strap.

CAUTION

Unplug all controllermodule wire harness connectors beforeperforming arc welding on any part of

the container.

CAUTION

Whencondenserwaterflowisbelow11lpm(3gpm)orwhenwater-cooledoperationisnotinuse,the

CFS switch MUST be set to position ”1” or the unit will not operate properly.

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Safety-3

CAUTION

Pre-trip inspection should not be performed with critical temperature cargoes in the container.

CAUTION

When Pre-Trip key is pressed, economy, dehumidification and bulb modewill be deactivated. At the

completion of Pre-Trip activity, economy, dehumidification and bulb mode must be reactivated.

CAUTION

When a failure occurs during automatic testing the unit will suspend operation awaiting operator

intervention.

CAUTION

When Pre--Trip testAuto 2runs to completion without being interrupted, the unitwill terminatepre-

tripanddisplay“Auto2”“end.”The unitwill suspendoperation untilthe userdepresses the ENTER

key!

CAUTION

To prevent trapping liquid refrigerant in the manifold gauge set be sure set is brought to suction

pressure before disconnecting.

CAUTION

The scroll compressor achieves low suction pressure very quickly. Do not use the compressor to

evacuate the system below zero psig. Never operate the compressor with the suction or discharge

service valves closed (frontseated). Internal damage will result from operating the compressor in a

deep vacuum.

CAUTION

UseonlyCarrier Transicold approved Polyol EsterOil (POE) -- Castrol-Icematic SW20 compressoroil

with R-134a. Buy in quantities of one quart or smaller. When using this hygroscopic oil, immediately

reseal. Do not leave container of oil open or contamination will occur.

CAUTION

Take necessary steps (place plywood over coil or use sling on motor) to prevent motor from falling

into condenser coil.

CAUTION

DO NOT disassemble piston from NEW suction modulating valve powerhead assembly. Doing so

may result in damage to piston.

CAUTION

The unit must be OFF whenever a programming card is inserted or removed from the controller pro-

gramming port.

CAUTION

Do not allow moisture to enter wire splice area as this may affect the sensor resistance.

CAUTION

Do not allow the recorder stylus to snap back down. The stylus arm base is spring loaded, and

damage may occur to the chart, or the stylus force may be altered.

CAUTION

Theinsidemechanismoftherecorder,particularlytheinsideoftheelementhousingshouldneverbe

oiled, however, control mechanisms should be sprayed periodically (every 60 days) with corrosion

inhibiting CRC 3-36a or 6-66 or LPS no. 2.

CAUTION

Recorderelementcapillarytubing maybebent,butneversharper than 1/2” radius; extra careshould

be taken when bending adjacent to welds. The bulb should never be bent, as this will affect

calibration.

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TABLE OF CONTENTS

PARAGRAPH NUMBER Page

GENERAL SAFETY NOTICES Safety-1............................................................

FIRST AID Safety-1.............................................................................

OPERATING PRECAUTIONS Safety-1............................................................

MAINTENANCE PRECAUTIONS Safety-1..........................................................

SPECIFIC WARNING AND CAUTION STATEMENTS Safety-1........................................

INTRODUCTION 1-1..............................................................................

1.1 INTRODUCTION 1-1.....................................................................

1.2 CONFIGURATION IDENTIFICATION 1-1...................................................

1.3 OPTION DESCRIPTIONS 1-1.............................................................

1.3.1 Battery 1-1...........................................................................

1.3.2 Dehumidification 1-1..................................................................

1.3.3 Control Box 1-1......................................................................

1.3.5 Pressure Readout 1-1.................................................................

1.3.6 USDA 1-1...........................................................................

1.3.7 Interrogator 1-1.......................................................................

1.3.8 Remote Monitoring 1-1................................................................

1.3.9 Communications 1-1..................................................................

1.3.10 Compressor 1-1......................................................................

1.3.11 Condenser Coil 1-1...................................................................

1.3.12 Autotransformer 1-2...................................................................

1.3.13 Temperature Recorder 1-2.............................................................

1.3.14 Gutters 1-2..........................................................................

1.3.15 Handles 1-2..........................................................................

1.3.16 Thermometer Port 1-2.................................................................

1.3.17 Water Cooling 1-2....................................................................

1.3.18 Back Panels 1-2......................................................................

1.3.19 460 Volt Cable 1-2...................................................................

1.3.20 230 Volt Cable 1-2....................................................................

1.3.21 Cable Restraint 1-2...................................................................

1.3.22 Upper Air (Fresh Air Make Up) 1-2......................................................

1.3.23 Lower Air (Fresh Air Make Up) 1-2......................................................

1.3.24 Controlled Atmosphere 1-2.............................................................

1.3.25 Power Correction 1-2..................................................................

1.3.26 Evaporator 1-2.......................................................................

1.3.27 Evaporator Fan Operation 1-2..........................................................

1.3.28 Labels 1-2...........................................................................

1.3.29 Emergency Bypass 1-2................................................................

DESCRIPTION 2-1...............................................................................

2.1 GENERAL DESCRIPTION 2-1.............................................................

2.1.1 Refrigeration Unit -- Front Section 2-1...................................................

2.1.2 Fresh Air Makeup Vent 2-1.............................................................

2.1.3 Evaporator Section 2-2................................................................

2.1.4 Compressor Section 2-3...............................................................

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TABLE OF CONTENTS

PARAGRAPH NUMBER Page

2.1.5 Air Cooled Condenser Section 2-4......................................................

2.1.6 Water-Cooled Condenser Section 2-5...................................................

2.1.7 Control Box Section 2-6...............................................................

2.1.8 Communications Interface Module 2-6...................................................

2.2 REFRIGERATION SYSTEM DATA 2-7......................................................

2.3 ELECTRICAL DATA 2-8...................................................................

2.4 SAFETY AND PROTECTIVE DEVICES 2-9.................................................

2.5 REFRIGERATION CIRCUIT 2-10...........................................................

2.5.1 Standard Operation 2-10................................................................

2.5.2 Economized Operation 2-10.............................................................

2.5.3 Unloaded Operation 2-10...............................................................

MICROPROCESSOR 3-1..........................................................................

3.1 TEMPERATURE CONTROL MICROPROCESSOR SYSTEM 3-1..............................

3.1.1 Key Pad 3-2.........................................................................

3.1.2 Display Module 3-2...................................................................

3.1.3 Controller 3-3........................................................................

3.2 CONTROLLER SOFTWARE 3-3...........................................................

3.2.1 Configuration Software (Configuration Variables) 3-3......................................

3.2.2 Operational Software (Function codes) 3-4...............................................

3.3 MODES OF OPERATION 3-4.............................................................

3.3.1 Temperature Control -- Perishable Mode 3-4..............................................

3.3.2 Defrost Interval 3-4...................................................................

3.3.3 Failure Action 3-4.....................................................................

3.3.4 Generator Protection 3-4..............................................................

3.3.5 Compressor High Temperature, Low Pressure Protection. 3-4..............................

3.3.6 Perishable Mode -- Conventional 3-4....................................................

3.3.7 Perishable Mode -- Economy 3-5.......................................................

3.3.8 Perishable Mode -- Dehumidification 3-5.................................................

3.3.9 Perishable, Dehumidification -- Bulb Mode 3-5............................................

3.3.10 Temperature Control -- Frozen Mode 3-6.................................................

3.4 CONTROLLER ALARMS 3-6..............................................................

3.5. UNIT PRE-TRIP DIAGNOSTICS 3-7.......................................................

3.6 DataCORDER 3-7........................................................................

3.6.1 Description 3-7.......................................................................

3.6.2 DataCORDER Software 3-7............................................................

3.6.3 Sensor Configuration (dCF02) 3-8......................................................

3.6.4 Logging Interval (dCF03) 3-10...........................................................

3.6.5 Thermistor Format (dCF04) 3-10.........................................................

3.3.11 Frozen Mode -- Conventional 3-6.......................................................

3.6.6 Sampling Type (dCF05 & dCF06) 3-10...................................................

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3.6.7 Alarm Configuration (dCF07 -- dCF10) 3-10...............................................

3.6.8 DataCORDER Power-Up 3-10...........................................................

3.6.9 Pre-Trip Data Recording 3-10...........................................................

3.6.10 DataCORDER Communications 3-10.....................................................

3.6.11 USDA Cold Treatment 3-11.............................................................

3.6.12 USDA Cold Treatment Procedure 3-11...................................................

3.6.13 DataCORDER Alarms 3-12.............................................................

3.6.14 ISO Trip Header 3-12..................................................................

OPERATION 4-1.................................................................................

4.1 INSPECTION (Before Starting) 4-1.........................................................

4.2 CONNECT POWER 4-1..................................................................

4.2.1 Connection To 380/460 vac Power 4-1...................................................

4.2.2 Connection to190/230 vac Power 4-1....................................................

4.3 ADJUST FRESH AIR MAKEUP VENT 4-1...................................................

4.3.1 Upper Fresh Air Makeup Vent 4-1.......................................................

4.3.2 Lower Fresh Air Makeup Vent 4-2.......................................................

4.4 CONNECT WATER-COOLED CONDENSER 4-2.............................................

4.4.1 Water--Cooled Condenser with Water Pressure Switch 4-2.................................

4.4.2 Water-Cooled Condenser with Condenser Fan Switch 4-2..................................

4.5 CONNECT REMOTE MONITORING RECEPTACLE 4-3......................................

4.6 STARTING AND STOPPING INSTRUCTIONS 4-3...........................................

4.6.1 Starting the Unit 4-3...................................................................

4.6.2 Stopping the Unit 4-3..................................................................

4.7 START--UP INSPECTION 4-3.............................................................

4.7.1 Physical Inspection 4-3................................................................

4.7.2 Check Controller Function Codes 4-3....................................................

4.7.3 Start Temperature Recorder 4-3........................................................

4.7.4 Complete Inspection 4-3...............................................................

4.8 PRE-TRIP DIAGNOSIS 4-3...............................................................

4.9 OBSERVE UNIT OPERATION 4-5.........................................................

4.9.1 Probe Check 4-5.....................................................................

4.10 SEQUENCE OF OPERATION 4-5...........................................................

4.10.1 Sequence Of operation -- Compressor Phase Sequence 4-7................................

4.10.2 Sequence Of Operation -- Perishable Mode Cooling 4-7....................................

4.10.3 Sequence Of Operation --

Perishable Mode Heating 4-7.................................................................

4.10.4 Sequence Of operation -- Frozen Mode Cooling 4-8........................................

4.10.5 Sequence Of Operation -- Defrost 4-8...................................................

4.11 EMERGENCY OPERATION 4-8...........................................................

4.11.1 Emergency Bypass Operation 4-9......................................................

4.11.2 Emergency Defrost Operation 4-9.......................................................

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PARAGRAPH NUMBER Page

TROUBLESHOOTING 5-1.........................................................................

5.1 UNIT WILL NOT START OR STARTS THEN STOPS 5-1......................................

5.2 UNIT OPERATES LONG OR CONTINUOUSLY IN COOLING 5-1..............................

5.3 UNIT RUNS BUT HAS INSUFFICIENT COOLING 5-2........................................

5.4 UNIT WILL NOT HEAT OR HAS INSUFFICIENT HEATING 5-2................................

5.5 UNIT WILL NOT TERMINATE HEATING 5-2................................................

5.6 UNIT WILL NOT DEFROST PROPERLY 5-2................................................

5.7 ABNORMAL PRESSURES (COOLING) 5-3.................................................

5.8 ABNORMAL NOISE OR VIBRATIONS 5-3..................................................

5.9 CONTROLLER MALFUNCTION 5-4........................................................

5.10 NO EVAPORATOR AIR FLOW OR RESTRICTED AIR FLOW 5-4..............................

5.11 THERMOSTATIC EXPANSION VALVE MALFUNCTION 5-4...................................

5.12 AUTOTRANSFORMER MALFUNCTION 5-4................................................

5.13 WATER-COOLED CONDENSER OR WATER PRESSURE SWITCH 5-4........................

5.14 COMPRESSOR OPERATING IN REVERSE 5-5.............................................

5.15 ABNORMAL TEMPERATURES 5-5........................................................

5.16 ABNORMAL CURRENTS 5-5..............................................................

SERVICE 6-1....................................................................................

6.1 SECTION LAYOUT 6-1...................................................................

6.2 MANIFOLD GAUGE SET 6-1..............................................................

6.3 REFRIGERATION SYSTEM SERVICE --

UNITS WITH STANDARD PIPING (with Service Valves) 6-2....................................

6.3.1 Service Connections 6-2...............................................................

6.3.2 Pumping Down the Unit 6-2............................................................

6.3.3 Refrigerant Leak Checking 6-3.........................................................

6.3.4 Evacuation and Dehydration 6-3........................................................

6.3.5 Refrigerant Charge 6-4.................................................................

6.4 REFRIGERATION SYSTEM SERVICE --

UNITS WITH SEMI--HERMETIC PIPING (without Service Valves) 6-4...........................

6.4.1 Service Connections 6-5...............................................................

6.4.2 Refrigerant Recovery 6-5................................................................

6.4.3 Refrigerant Leak Checking 6-6...........................................................

6.4.4Evacuation and Dehydration 6-6..........................................................

6.4.5 Refrigerant Charge 6-7.................................................................

6.4.7 Adding Refrigerant to System (Partial Charge) 6-7........................................

6.5 COMPRESSOR 6-7......................................................................

6.5.1 Removal and Replacement of Compressor 6-7...........................................

6.6 COMPRESSOR OIL LEVEL 6-9...........................................................

6.7 HIGH PRESSURE SWITCH 6-10...........................................................

6.7.1 Replacing High Pressure Switch--Units with Standard Piping (with Service Valves) 6-10.........

6.7.2 Replacing High Pressure Switch--Units with Semi--Hermetic Piping(without Service Valves) 6-10.

6.7.3 Checking High Pressure Switch 6-10.....................................................

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TABLE OF CONTENTS

PARAGRAPH NUMBER Page

6.8 CONDENSER COIL 6-10..................................................................

6.9 CONDENSER FAN AND MOTOR ASSEMBLY 6-10...........................................

6.10 WATER COOLED CONDENSER CLEANING 6-11............................................

6.11 FILTER-DRIER 6-13.......................................................................

6.12 EXPANSION VALVES 6-13.................................................................

6.12.1 Checking Superheat. 6-13..............................................................

6.12.2 Valve Replacement 6-14................................................................

6.13 EVAPORATOR COIL AND HEATER ASSEMBLY 6-15.........................................

6.13.1 Evaporator Coil Replacement 6-15.......................................................

6.13.2 Evaporator Heater Replacement 6-15....................................................

6.14 ECONOMIZER, UNLOADER AND OIL RETURN SOLENOID VALVE 6-15........................

6.15 EVAPORATOR FAN AND MOTOR ASSEMBLY 6-16..........................................

6.15.1 Replacing The Evaporator Fan Assembly 6-16.............................................

6.15.2 Disassemble The Evaporator Fan Assembly 6-16..........................................

6.15.3 Assemble The Evaporator Fan Assembly 6-16.............................................

6.16 EVAPORATOR FAN MOTOR CAPACITORS 6-17.............................................

6.16.1 When To Check For A Defective Capacitor 6-17...........................................

6.16.2 Removing The Capacitor 6-17...........................................................

6.16.3 Checking The Capacitor 6-17............................................................

6.17 VALVE OVERRIDE CONTROLS 6-17........................................................

6.18 SUCTION MODULATION VALVE 6-18.......................................................

6.18.1 Precheck Procedure 6-18...............................................................

6.18.2 Checking The Stepper valve 6-18........................................................

6.19 AUTOTRANSFORMER 6-19...............................................................

6.20 CONTROLLER AND EXPANSION MODULE 6-19.............................................

6.20.1 Handling Modules 6-19.................................................................

6.20.2 Controller Trouble-Shooting 6-20.........................................................

6.20.3 Controller Programming Procedure 6-20..................................................

6.20.4 Removing and Installing a Module 6-21...................................................

6.21 TEMPERATURE SENSOR SERVICE 6-21...................................................

6.21.1 Sensor Checkout Procedure 6-21........................................................

6.21.2 Sensor Replacement 6-21..............................................................

6.21.3 Sensor Re--Installation 6-22.............................................................

6.22 ELECTRONIC PARTLOW TEMPERATURE RECORDER 6-23..................................

6.23 MECHANICAL PARTLOW TEMPERATURE RECORDER 6-25..................................

6.23.1 Checking The Temperature Recorder 6-25................................................

6.24 SAGINOMIYA TEMPERATURE RECORDER 6-27............................................

6.25 MAINTENANCE OF PAINTED SURFACES 6-29..............................................

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TABLE OF CONTENTS

PARAGRAPH NUMBER Page

6.26 COMPOSITE CONTROL BOX REPAIRS 6-29................................................

6.26.1 Introduction 6-29......................................................................

6.26.2 Cracks 6-29...........................................................................

6.26.3 Chips And Holes 6-29..................................................................

6.26.4 Inserts 6-29...........................................................................

6.26.5 Door Hinge Inserts 6-29................................................................

6.27 COMMUNICATIONS INTERFACE MODULE INSTALLATION 6-32..............................

ELECTRICAL WIRING SCHEMATIC 7-1............................................................

7.1 INTRODUCTION 7-1.....................................................................

LIST OF ILLUSTRATIONS

FIGURE NUMBER Page

Figure 2-1 Refrigeration Unit -- Front Section 2-1.....................................................

Figure 2-2 Evaporator Section 2-2.................................................................

Figure 2-3 Compressor Section 2-3................................................................

Figure 2-4 Condenser Section 2-4..................................................................

Figure 2-5 Water-Cooled Condenser Section 2-5.....................................................

Figure 2-6 Control Box Section 2-6.................................................................

Figure 2-7 Refrigeration Circuit Schematic -- Standard Operation 2-11...................................

Figure 2-8 Refrigeration Circuit Schematic -- Economized Operation 2-12.................................

Figure 2-9 Refrigeration Circuit Schematic -- Unloaded Operation 2-12...................................

Figure 3- 1 Temperature Control System 3-1........................................................

Figure 3- 2 Key Pad 3-2..........................................................................

Figure 3- 3 Display Module 3-2....................................................................

Figure 3- 4 Control and Expansion Modules 3-3......................................................

Figure 3- 5 Standard Configuration Download Report 3-9..............................................

Figure 3- 6 Data Reader 3-10.......................................................................

Figure 4-1 Autotransformer 4-1....................................................................

Figure 4-2 Make Up Air Flow Chart 4-2.............................................................

Figure 4-3 Controller Operation -- Perishable Mode 4-5...............................................

Figure 4-4 Controller Operation -- Frozen Mode 4-6...................................................

Figure 4-5 Perishable Mode 4-6....................................................................

Figure 4-6 Perishable Mode Heating 4-7............................................................

Figure 4-7 Frozen Mode 4-7.......................................................................

Figure 4-8 Defrost 4-8............................................................................

Figure 6-1 Manifold Gauge Set 6-1.................................................................

Figure 6-2 R-134a Manifold Gauge/Hose Set 6-1.....................................................

Figure 6-3 Service Valve 6-2......................................................................

Figure 6-4. Refrigeration System Service Connections 6-3............................................

Figure 6-5. Standard Piping Compressor Service Connections 6-4......................................

Figure 6-6. Semi--Hermetic Piping Refrigeration System Service Connections 6-5........................

Figure 6-7 Compressor Upper Mounting 6-8.........................................................

Figure 6-8 Compressor Lower Mounting 6-8.........................................................

Figure 6-9 High Pressure Switch Testing 6-10.........................................................

Figure 6-10 Water-Cooled Condenser Cleaning -- Forced Circulation 6-12................................

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LIST OF ILLUSTRATIONS -- Continued

FIGURE NUMBER Page

Figure 6-11 Water Cooled Condenser Cleaning - Gravity Circulation 6-12.................................

Figure 6-12 Thermostatic Expansion Valve Bulb 6-13..................................................

Figure 6-13 Hermetic Thermostatic Expansion Valve Brazing Procedure 6-14.............................

Figure 6-14 Evaporator Expansion Valve 6-14........................................................

Figure 6-15 Quench & Economizer Expansion Valves 6-14.............................................

Figure 6-16. Unloader Solenoid Valve 6-16...........................................................

Figure 6-17. Oil Return Solenoid Valve (ORV) and Economizer Solenoid Valve (ESV) 6-16..................

Figure 6-18. Evaporator Fan Assembly 6-17..........................................................

Figure 6-19 Suction Modulation Valve (SMV) 6-18.....................................................

Figure 6-20 Controller Section of the Control Box 6-19.................................................

Figure 6-21 Sensor Types 6-21.....................................................................

Figure 6-22 Sensor and Cable Splice 6-21...........................................................

Figure 6-23 Supply Sensor Positioning 6-22..........................................................

Figure 6-24 Return Sensor Positioning 6-22..........................................................

Figure 6-25. Electronic Partlow Temperature Recorder 6-23............................................

Figure 6-26. Partlow Mechanical Temperature Recorder 6-26...........................................

Figure 6-27. Saginomiya Temperature Recorder 6-27..................................................

Figure 6-28 Door Hinge Repair 6-28.................................................................

Figure 6-29. Insert Location 6-30....................................................................

Figure 6-30. Communications Interface Installation 6-31................................................

Figure 7-1 LEGEND 7-1..........................................................................

Figure 7-2 SCHEMATIC DIAGRAM 7-2.............................................................

Figure 7-3 SCHEMATIC DIAGRAM -- Temperature Recorders 7-3.....................................

Figure 7-4 WIRING DIAGRAM, UNITS W/SINGLE CAPACITOR EVAPORATOR FAN MOTORS 7-4.......

Figure 7-5 WIRING DIAGRAM , UNITS W/DUAL CAPACITOR EVAPORATOR FAN MOTORS 7-6.........

Figure 7-6 WIRING DIAGRAM -- Electronic Partlow Temperature Recorder 7-8..........................

LIST OF TABLES

TABLE NUMBER Page

Table 2-1 Safety and Protective Devices 2-9..........................................................

Table 3-1 Key Pad Function 3-2.....................................................................

Table 3-2 DataCORDER Configuration Variables 3-8..................................................

Table 3-3 DataCORDER Standard Configurations 3-8..................................................

Table 3-4 Controller Configuration Variables 3-13.......................................................

Table 3-5 Controller Function Codes 3-14.............................................................

Table 3-6 Controller Alarm Indications 3-17............................................................

Table 3-7 Controller Pre-Trip Test Codes 3-21..........................................................

Table 3-8 DataCORDER Function Code Assignments 3-25..............................................

Table 3-9 DataCORDER Pre-Trip Result Records 3-26..................................................

Table 3-10 DataCORDER Alarm Indications 3-27.......................................................

Table 6-1 Compressor Kit 6-7.......................................................................

Table 6-2 Sensor Temperature/Resistance Chart (+/--.002%) 6-21........................................

Table 6-3 Temperature-Resistance Chart 6-26.........................................................

Table 6-4 Crack, Chip & Hole Repair Kit 6-30..........................................................

Table 6-5 Insert Repair Kit 6-30......................................................................

Table 6-6 Drill Information 6-30......................................................................

Table 6-7 Recommended Bolt Torque Values 6-32......................................................

Table 6-8 R-134a Temperature - Pressure Chart 6-33...................................................

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SECTION 1

INTRODUCTION

1.1 INTRODUCTION

The Carrier Transicold model 69NT40--531 series units

are of lightweight aluminum frame construction,

designedtofitinthefrontof acontainerandserveasthe

container front wall.

They are one piece, self-contained, all electric units

which are fitted with cooling and heating systems to

provide precise temperature control.

The units are supplied with a complete charge of

refrigerant R-134a and compressor lubricating oil and

are ready for operation upon installation. Forklift

pockets are provided for unit installation and removal.

The base unit operates on nominal 380/460 volt, 3

phase, 50/60 hertz power. An optional autotransformer

may be fitted to allow operation on nominal 190/230 , 3

phase, 50/60 hertz power. Power for the control system

is provided by a transformer which steps the supply

power down to 18 and 24 volts, single phase.

The controller is a Carrier Transicold Micro-Link 2i

microprocessor. The controller will operate

automatically to select cooling, holding or heating as

required to maintain the desired set point temperature

withinverycloselimits. Theunit mayalsobefittedwitha

mechanical or electronic temperature recorder.

The controller is fitted with a keypad and display for

viewing or changing operating parameters. The display

is also equipped with lights to indicate various modes of

operation.

1.2 CONFIGURATION IDENTIFICATION

Unit identification information is provided on a model

plate located to the left of the economizer. The plate

provides the unit model number and the unit parts

identification number (PID). The model number

identifies the overall unit configuration while the PID

provides information on specific optional equipment,

factory provision to allow for field installation of optional

equipment and differences in detailed parts.

Configuration identification for the models covered

herein are provided in the Carrier Transicold Container

UnitMatrixmanual,publicationT--300.Printedcopiesof

the T--300 may be obtained from Carrier Transicold.

Also,aweeklyupdatedcopymaybefoundattheCarrier

Web site, www.carrier.refrigeration.com.

1.3 OPTION DESCRIPTIONS

Various options may be factory or field fitted to the base

unit. Brief descriptionsof the options areprovided inthe

following subparagraphs.

1.3.1 Battery

The controller may be fitted with standard replaceable

batteries or a rechargeable battery pack.

1.3.2 Dehumidification

The unit may be fitted with a humidity sensor. This

sensor allows setting of a humidity set point in the

controller. In the dehumidification mode the controller

will operate to reduce internal container moisture level.

1.3.3 Control Box

The control box is constructed of composite material

and may be fitted with a lockable door.

1.3.4 Temperature Readout

The unit may be fitted with suction and discharge

temperature sensors. The sensor readings may be

viewed on the controller display.

1.3.5 Pressure Readout

The unit may be fitted with factory installed suction and

discharge pressure gauges. The unit is fitted with

suction and discharge transducers. The readings may

be viewed on the controller display.

1.3.6 USDA

The unit may be fitted with connections for additional

temperature probes to allow recording of USDA Cold

Treatment data by the integral DataCORDER function

of the Micro--Link controller.

1.3.7 Interrogator

Units that use the DataCORDER function are fitted with

interrogator receptacles for connection of equipment to

download the recorded data. Two receptacles may be

fitted, one accessible from the front of the unit and the

other mounted inside the container (with the USDA

receptacles).

1.3.8 Remote Monitoring

The unit may be fitted with a remote monitoring

receptacle. This item allows connection of remote

indicators for COOL, DEFROST and IN RANGE.

1.3.9 Communications

The unit may be fitted with a communications interface

module. The communications interface module is a

slave module which allows communication with a

master central monitoring station. The module will

respond to communication and return information over

the main power line. Refer to the ship master system

technical manual for further information.

1.3.10 Compressor

The unit is fitted with a scroll compressor with either

standard piping (equipped with suction, discharge,

economizer and oil return service valves) or with

semi--hermeticpiping(equippedwithsuction,discharge

and economizer service connections).

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1-2

T-292

1.3.11 Condenser Coil

Theunitmaybefittedwitha5rowcoilusingnominal3/8

inch tubing, or the unit may be fitted with a 4 row coil

using 7mm tubing. The required refrigerant charge is

different for each coil.

1.3.12 Autotransformer

An autotransformer may be provided to allow operation

on 190/230, 3phase, 50/60 hertz power. The

autotransformer raises the supply voltage to the

nominal 460 volt power required by the base unit. The

autotransformer may also be fitted with an individual

circuit breaker for the 230 volt power.

If the unit is fitted with an autotransformer and

communications module, the autotransformer will be

fitted with a transformer bridge unit (TBU) to assist in

communications.

1.3.13 Temperature Recorder

One of three temperature recording devices may be

fitted to the unit. The devices include a mechanical

recorder manufactured by Partlow Corporation, a

mechanical recorder manufactured by Saginomiya

Corporation, and an electronic recorder manufactured

by Partlow Corporation.

1.3.14 Gutters

Rain gutters may be fitted over the control box and

recorder sections to divert rain away form the controls.

The different gutters include standard length bolted

gutters, extended length gutters and riveted gutters.

1.3.15 Handles

Theunitmaybefittedwithhandles tofacilitateaccessto

stacked containers. These handles may included fixed

handles(locatedat thesides of theunit)and/orahinged

handle at the center (attached to the condenser coil

cover).

1.3.16 Thermometer Port

The unit may be fitted with ports in the front of the frame

for insertionof athermometertomeasure supplyand/or

return air temperature. If fitted, the port(s) will require a

cap and chain.

1.3.17 Water Cooling

The refrigeration system may be fitted with a water

cooled condenser. The condenser is constructed using

copper--nickel tube for sea water applications. The

water cooled condenser is in series with the air cooled

condenser replaces the standard unit receiver. When

operating on the water cooled condenser, the

condenser fan is deactivated by either a water pressure

switch or condenser fan switch.

1.3.18 Back Panels

Back panel designs that may be fitted include panels of

aluminum and stainless steel. Panels may be fitted with

access doors and/or hinge mounting.

1.3.19 460 Volt Cable

Various power cable and plug designs are available for

the main 460 volt supply. The plug options tailor the

cables to each customers requirements.

1.3.20 230 Volt Cable

Units equipped with an autotransformer require an

additional power cable for connection to the 230 volt

source. Various power cable and plug designs are

available. The plug options tailor the cables to each

customers requirements.

1.3.21 Cable Restraint

Various designs are available for storage of the power

cables. These options are variations of the compressor

section front cover.

1.3.22 Upper Air (Fresh Air Make Up)

The unit may be fitted with an upper fresh air makeup

assembly. The fresh air makeup assembly is available

with a Vent Positioning Sensor (VPS) and may also be

fitted with screens.

1.3.23 Lower Air (Fresh Air Make Up)

The unit may be fitted with a lower fresh air makeup

assembly. The assembly may also be fitted with

screens.

1.3.24 Controlled Atmosphere

The unit may be fitted with the TransFRESH option.

For information on the TransFRESH system, contact

TransFRESH Corporation, P.O. Box 1788, Salinas CA

93902

1.3.25 Power Correction

The unit may be fitted with a set of power factor

correction capacitors to assist in correction of

imbalance in current draw by the compressor.

1.3.26 Evaporator

The unit is fitted with an evaporator coil and a hermetic

thermal expansion valve.

1.3.27 Evaporator Fan Operation

The units are fitted with Normal Evaporator Fan

Operation, opening of an evaporator fan internal

protector will shut down the unit.

1.3.28 Labels

Operating Instruction and Function Code listing labels

will differ depending on the options installed. For

example, additional operating instructions are required

to describe start--up of a unit equipped with an

autotransformer. Where the labels are available with

additional languages, they are listed in the parts list.

1.3.29 Emergency Bypass

The unit may be equipped with switches to allow

emergency bypass of the controller. The

EMERGENCY BYPASS switch functions to bypass

the controller in the event of controller failure. The

EMERGENCY DEFROST switch functions to bypass

all controls and place the unit in the defrost mode.

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T-292

2-1

SECTION 2

DESCRIPTION

2.1 GENERAL DESCRIPTION

2.1.1 Refrigeration Unit -- Front Section

The unit is designed so that the majority of the

components are accessible from the front, see

Figure 2-1.Theupperaccesspanelsallowentryintothe

evaporator section, and the center access panel allows

access to the evaporator expansion valve, quench

expansion valve, suction modulation valve and

evaporator coil heaters. The unit model number, serial

numberandpartsidentificationnumbercanbe foundon

the serial plate to the left of the economizer.

2.1.2 Fresh Air Makeup Vent

The function of the upper or lower makeup air vent is to

provideventilationfor commodities that require freshair

circulation.

1. Access Panel (Evap. Fan #1)

2. Access Panel (Heaters, Suction Modulating

Valve, Quench Expansion Valve & Evaporator

Expansion Valve)

3. Fork Lift Pockets

4. Control Box

5. Compressor

6. Receiver or Water Cooled Condenser

7. Economizer

8. Unit Serial Number, Model Number and

Parts Identification Number (PID) Plate

9. Power Cables and Plug

10. Condenser Fan

11. Autotransformer

12. TransFRESH Communications Connector

13. Interrogator Connector (Front left)

14. Temperature Recorder

15. Lower Fresh Air Makeup Vent Location

(Blank Cover Shown)

16. TIR (Transports Internationaux Routiers)

Sealing Provisions - Typical All Panels

17. Upper Fresh Air Makeup Vent

18. Access Panel (Evap. Fan #2)

Figure 2-1 Refrigeration Unit -- Front Section

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2-2T-292

2.1.3 Evaporator Section

The evaporator section (Figure 2-2) contains the

temperature recorder bulb or return recorder sensor,

returntemperaturesensor,evaporatorexpansionvalve,

quench expansion valve, suction modulation valve,

dual-speed evaporator fans (EM1 and EM2),

evaporator coil and heater, drain pan heater, defrost

heaters, defrost temperature sensor, heat termination

thermostat and suction temperature sensor.

The evaporator fans circulate air through the container

by pulling it in the top of the unit, directing it through the

evaporator coil, where it is heated or cooled, and

discharging it at the bottom.

The evaporator components are accessible by

removing the upper rear panel (as shown in the

illustration) or by removing the front access panels.

19 17

15 16

ALTERNATE USDA

LOCATION

1. Evaporator Fan Motor #1

2. Return Recorder Sensor

3. Return Temperature Sensor

4. Humidity Sensor

5. Mechanical Recorder Bulb

6. Evaporator Fan Motor #2

7. Defrost Temperature Sensor

8. Heater Termination Thermostat

9. Evaporator Coil

10. Evaporator Coil Heaters

11. Drain Pan Heater

12. Evaporator Expansion Valve Bulb

13. Evaporator Expansion Valve

14. Quench Expansion Valve

15. Low Side Access Valve

16. Suction Modulating Valve

17. Quench Valve Bulb

18. Suction Temperature Sensor

19. To Compressor

20. From Coil

21. To Coil

22. Interrogator Connector (Rear)

23. USDA Probe Receptacle PR2

24. USDA Probe Receptacle PR1

25. USDA Probe Receptacle PR3

26. Cargo Probe Receptacle PR4

Figure 2-2 Evaporator Section

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