Carrier 69NT40-551-500 Operation manual

T--334 Rev B
OPERATION AND SERVICE
for
69NT40--551--500 TO 599
Container Refrigeration Units
Container Refrigeration
R
Downloaded from ManualsNet.com search engine

OPERATION AND SERVICE MANUAL
CONTAINER REFRIGERATION UNIT
Models
69NT40--551--500 to 599
Downloaded from ManualsNet.com search engine

iT-334
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 DESCRIPTION 1--1..............................................................
1.3.1 Battery 1--1...........................................................................
1.3.2 Dehumidification 1--1..................................................................
1.3.3 Control Box 1--1......................................................................
1.3.4 Temperature Readout 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 Power Correction 1--2..................................................................
1.3.25 Evaporator 1--2.......................................................................
1.3.26 Evaporator Fan Operation 1--2..........................................................
1.3.27 Labels 1--2...........................................................................
1.3.28 Plate Set 1--2.........................................................................
1.3.29 Controller 1--2........................................................................
1.3.30 Condenser Grille 1--2..................................................................
1.3.31 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.............................................................
Downloaded from ManualsNet.com search engine

ii
T-334
TABLE OF CONTENTS -- Continued
PARAGRAPH NUMBER Page
2.1.3 Evaporator Section 2--2................................................................
2.1.4 Compressor Section 2--3...............................................................
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--11...........................................................
2.5.1 Standard Operation 2--11................................................................
2.5.2 Economized Operation 2--11.............................................................
2.5.3 Unloaded Operation 2--11...............................................................
2.5.4 Liquid Injection Operation 2--11..........................................................
2.5.5 Expansion Bypass Solenoid Valve 2--11...................................................
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 (Variables) 3--3...................................................
3.2.2 Operational Software (Function Codes) 3--3..............................................
3.3 MODES OF OPERATION 3--4.............................................................
3.3.1 Temperature Control - Perishable Mode 3--4..............................................
3.3.2 Evaporator Fan Operation 3--4..........................................................
3.3.3 Defrost Interval 3--4...................................................................
3.3.4 Failure Action 3--4.....................................................................
3.3.5 Generator Protection 3--4..............................................................
3.3.6 Compressor High Temperature, Low Pressure Protection 3--4...............................
3.3.7 Perishable Mode - Conventional 3--4.....................................................
3.3.8 Perishable Mode - Economy 3--5........................................................
3.3.9 Perishable Mode - Dehumidification 3--5..................................................
3.3.10 Perishable, Dehumidification - Bulb Mode 3--5............................................
3.3.11 Perishable - System Pressure Regulation 3--6.............................................
3.3.12 Temperature Control - Frozen Mode 3--6.................................................
3.3.13 Frozen Mode - Conventional 3--6........................................................
3.3.14 Frozen Mode - Economy 3--6...........................................................
3.3.15 Condenser Fan Switch Override 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--8............................................................
Downloaded from ManualsNet.com search engine

iii T-334
TABLE OF CONTENTS -- Continued
PARAGRAPH NUMBER Page
3.6.3 Sensor Configuration (dCF02) 3--8......................................................
3.6.4 Logging Interval (dCF03) 3--8...........................................................
3.6.5 Thermistor Format (dCF04) 3--8.........................................................
3.6.6 Sampling Type (dCF05 & dCF06) 3--10...................................................
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 To 190/230 VAC Power 4--1..................................................
4.3 ADJUST FRESH AIR MAKEUP VENT 4--1...................................................
4.3.1 Upper Fresh Air Makeup Vent 4--2.......................................................
4.3.2 Lower Fresh Air Makeup Vent 4--2.......................................................
4.3.3 Fresh Air Position Sensor 4--2..........................................................
4.4 CONNECT WATER-COOLED CONDENSER 4--3.............................................
4.4.1 Water-Cooled Condenser with Water Pressure Switch 4--3..................................
4.4.2 Water-Cooled Condenser with Condenser Fan Switch 4--3..................................
4.5 CONNECT REMOTE MONITORINGRECEPTACLE 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--4...............................................................
4.8 PRE-TRIP DIAGNOSIS 4--4...............................................................
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--5................................
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....................................................
4.10.6 Emergency Bypass Operation 4--9......................................................
Downloaded from ManualsNet.com search engine

iv
T-334
TABLE OF CONTENTS -- Continued
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--5....................................................................................
6.4.1 Service Connections 6--5...............................................................
6.4.2 Refrigerant Recovery 6--5..............................................................
6.4.3 Refrigerant Leak Checking 6--5.........................................................
6.4.4 Evacuation and Dehydration 6--6........................................................
6.4.5 Refrigerant Charge 6--6................................................................
6.4.6 Adding Refrigerant to System (Full Charge) 6--6...........................................
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--9...........................................................
6.7.1 Replacing High Pressure Switch 6--9.....................................................
6.7.2 Checking High Pressure Switch 6--9.....................................................
6.8 CONDENSER COIL 6--10..................................................................
6.9 CONDENSER FAN AND MOTOR ASSEMBLY 6--10...........................................
6.10 WATER--COOLED CONDENSER CLEANING 6--10............................................
6.11 FILTER DRIER 6--12.......................................................................
Downloaded from ManualsNet.com search engine

vT-334
TABLE OF CONTENTS -- Continued
PARAGRAPH NUMBER Page
6.12 EXPANSION VALVES 6--12.................................................................
6.12.1 Checking Superheat 6--12...............................................................
6.12.2 Valve Replacement 6--13................................................................
6.13 EVAPORATOR COIL AND HEATER ASSEMBLY 6--13.........................................
6.13.1 Evaporator Coil Replacement 6--13.......................................................
6.13.2 Evaporator Heater Replacement 6--14....................................................
6.14 ECONOMIZER, UNLOADER, LIQUID INJECTION, AND EXPANSION BYPASS SOLENOID VALVES
6--14....................................................................................
6.15 EVAPORATOR FAN AND MOTOR ASSEMBLY 6--15..........................................
6.15.1 Replacing The Evaporator Fan Assembly 6--15.............................................
6.15.2 Disassemble The Evaporator Fan Assembly 6--15..........................................
6.15.3 Assemble The Evaporator Fan Assembly 6--16.............................................
6.16 EVAPORATOR FAN MOTOR CAPACITORS 6--16.............................................
6.16.1 When To Check For A Defective Capacitor 6--16...........................................
6.16.2 Removing The Capacitor 6--16...........................................................
6.16.3 Checking The Capacitor 6--16............................................................
6.17 VALVE OVERRIDE CONTROLS 6--16........................................................
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--18...............................................................
6.20 CONTROLLER 6--19.......................................................................
6.20.1 Handling Modules 6--19.................................................................
6.20.2 Controller Trouble-Shooting 6--19.........................................................
6.20.3 Controller Programming Procedure 6--20..................................................
6.20.4 Removing and Installing a Module 6--20...................................................
6.20.5 Battery Replacement 6--21..............................................................
6.21 VENT POSITION SENSOR SERVICE 6--21...................................................
6.22 TEMPERATURE SENSOR SERVICE 6--21...................................................
6.22.1 Sensor Checkout Procedure 6--21........................................................
6.22.2 Sensor Replacement 6--22..............................................................
6.22.3 Sensor Re-Installation 6--23.............................................................
6.23 ELECTRONIC PARTLOW TEMPERATURE RECORDER 6--23..................................
6.24 MAINTENANCE OF PAINTED SURFACES 6--26..............................................
6.25 COMPOSITE CONTROL BOX REPAIRS 6--26................................................
6.25.1 Introduction 6--26......................................................................
6.25.2 Cracks 6--26...........................................................................
6.25.3 Chips And Holes 6--26..................................................................
6.25.4 Inserts 6--26...........................................................................
6.25.5 Door Hinge Inserts 6--26................................................................
6.26 COMMUNICATIONS INTERFACE MODULE INSTALLATION 6--29..............................
ELECTRICAL WIRING SCHEMATICS 7--1...........................................................
7.1 INTRODUCTION 7--1.....................................................................
Downloaded from ManualsNet.com search engine

vi
T-334
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 Air-Cooled 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--12...................................
Figure 2--8 Refrigeration Circuit Schematic - Economized Operation 2--13.................................
Figure 2--9 Refrigeration Circuit Schematic - Unloaded Operation 2--13...................................
Figure 3--1 Temperature Control System 3--1.........................................................
Figure 3--2 Key Pad 3--2..........................................................................
Figure 3--3 Display Module 3--3....................................................................
Figure 3--4 Control Module 3--3.....................................................................
Figure 3--5 Standard Configuration Download Report 3--9..............................................
Figure 3--6 Data Reader 3--11.......................................................................
Figure 4--1 Autotransformer 4--1....................................................................
Figure 4--2 Make Up Air Flow Chart 4--2.............................................................
Figure 4--3 Controller Operation - Perishable Mode 4--6...............................................
Figure 4--4 Controller Operation - Frozen Mode 4--6...................................................
Figure 4--5 Perishable Mode - Cooling 4--7...........................................................
Figure 4--6 Perishable Mode Heating 4--7............................................................
Figure4--7FrozenMode 4--8......................................................................
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 Semi-Hermetic Piping Refrigeration System Service Connections 6--5.........................
Figure 6--6 Compressor Upper Mounting 6--7........................................................
Figure 6--7 Compressor Lower Mounting 6--8........................................................
Figure 6--8 High Pressure Switch Testing 6--9........................................................
Figure 6--9 Water-Cooled Condenser Cleaning - Forced Circulation 6--11.................................
Figure 6--10 Water-Cooled Condenser Cleaning - Gravity Circulation 6--12................................
Figure 6--11 Thermostatic Expansion Valve Bulb 6--12..................................................
Figure 6--12 Evaporator Expansion Valve 6--13........................................................
Figure 6--13 Economizer Expansion Valves 6--13......................................................
Figure 6--14 Hermetic Thermostatic Expansion Valve Brazing Procedure 6--14.............................
Figure 6--15 Economizer Solenoid Valve, Liquid Injection Valve and Expansion Bypass Solenoid Valve 6--14...
Figure 6--16 Unloader Solenoid Valve 6--15...........................................................
Figure 6--17 Evaporator Fan Assembly 6--15..........................................................
Figure 6--18 Suction Modulation Valve (SMV) 6--18....................................................
Figure 6--19 Controller Section of the Control Box 6--19.................................................
Figure 6--20 Sensor Types 6--22
.....................................................................
Figure 6--21 Sensor and Cable Splice 6--22...........................................................
Downloaded from ManualsNet.com search engine

vii T-334
LIST OF ILLUSTRATIONS -- Continued
FIGURE NUMBER Page
Figure 6--22 Supply Sensor Positioning 6--23..........................................................
Figure 6--23 Return Sensor Positioning 6--23..........................................................
Figure 6--24 Electronic Partlow Temperature Recorder 6--25.............................................
Figure 6--25 Door Hinge Repair 6--27................................................................
Figure 6--26 Insert Location 6--28....................................................................
Figure 6--27 Communications Interface Installation 6--29................................................
Figure 7--1 LEGEND--Single Phase, Normal Evaporator Fan Capability, Single Evaporator Fan Capability 7--2
Figure 7--2 SCHEMATIC DIAGRAM - Single Phase, Normal Evaporator Fan Capability 7--3................
Figure 7--3 SCHEMATIC DIAGRAM - Single Phase, Single Evaporator Fan Capability 7--4.................
Figure 7--4 LEGEND -- Three--Phase Evaporator Fan Motor 7--5........................................
Figure 7--5 SCHEMATIC DIAGRAM - Three--Phase Evaporator Fan Motor 7--6...........................
Figure 7--6 SCHEMATIC DIAGRAM-TransFRESH and Emergency Bypass 7--7..........................
Figure 7--7 SCHEMATIC AND WIRING DIAGRAM - Electronic Partlow Recorder 7--8.....................
Figure 7--8 SCHEMATIC AND WIRING DIAGRAM - Upper and Lower Vent Position Sensors 7--9...........
Figure 7--9 WIRING DIAGRAM - Single Phase, Normal Evaporator Fan Capability 7--10....................
Figure 7--10 WIRING DIAGRAM - Normal Evaporator Fan Capability with Bypass Module 7--12..............
Figure 7--11 WIRING DIAGRAM - Single Phase, Single Evaporator Fan Capability 7--14....................
Figure 7--12 WIRING DIAGRAM - Three--Phase Evaporator Fan Motor 7--16..............................
LIST OF TABLES
TABLE NUMBER Page
Table 2--1 Safety and Protective Devices 2--10.........................................................
Table 3--1 Key Pad Function 3--2....................................................................
Table 3--2 DataCORDER Configuration Variables 3--8..................................................
Table 3--3 DataCORDER Standard Configurations 3--10.................................................
Table 3--4 Controller Configuration Variables 3--13......................................................
Table 3--5 Controller Function Codes 3--15.............................................................
Table 3--6 Controller Alarm Indications 3--19...........................................................
Table 3--7 Controller Pre-Trip Test Codes 3--23.........................................................
Table 3--8 DataCORDER Function Code Assignments 3--27..............................................
Table 3--9 DataCORDER Pre-Trip Result Records 3--28.................................................
Table 3--10 DataCORDER Alarm Indications 3--29......................................................
Table 6--1 Compressor Kit 6--7......................................................................
Table 6--2 Valve Override Control Displays 6--17........................................................
Table 6--3 Sensor Temperature/Resistance Chart 6--22..................................................
Table 6--4 Crack, Chip & Hole Repair Kit 6--27..........................................................
Table 6--5 Insert Repair Kit 6--27......................................................................
Table 6--6 Drill Information 6--27......................................................................
Table 6--7 Recommended Bolt Torque Values 6--29.....................................................
Table 6--8 R-134a Temperature - Pressure Chart 6--30..................................................
Downloaded from ManualsNet.com search engine

T--334
Safety--1
SAFETY SUMMARY
GENERAL SAFETY NOTICES
The following general safety notices supplement
specific warnings and cautions appearing elsewhere in
this manual. They are recommended precautions that
must be understood and applied during operation and
maintenance 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 work should be performed on the unit until all circuit
breakers and 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 power is 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.
Do not bypass any electrical safety devices, e.g.
bridging an overload, or using any sort of jumper wires.
Problems with the system should be diagnosed, and
any necessary repairs performed by qualified service
personnel.
When performing any arc welding on the unit or
container, disconnect all wire harness connectors from
the modules in 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 that WILL
result in severe personal injury or death.
WARNING - means to warn against hazards or unsafe
conditions that COULD result in severe personal injury
or death.
CAUTION - means to warn against potential hazard or
unsafe practice that 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.
DANGER
Never use air or gases containing oxygen
for leak testing or operating refrigerant
compressors. Pressurized mixtures of air
or gases containing oxygen can lead to ex-
plosion.
WARNING
Beware of unannounced starting of the
evaporator and condenser fans. The unit
may cycle the fans and compressor unex-
pectedly as control requirements dictate.
WARNING
Do not attempt to remove power plug(s) be-
fore turning OFF start-stop switch (ST), unit
circuit breaker(s) and external power
source.
WARNING
Make sure the power plugs are clean and
dry before connecting to any power recep-
tacle.
Downloaded from ManualsNet.com search engine

Safety--2
T--334
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
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 cou-
plings 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
Wear rubber gloves and wash the solution
from the skin immediately if accidental
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
Do not use a nitrogen cylinder without a
pressure regulator. Do not use oxygen in or
near a refrigeration 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 con-
troller modules unless you are grounded to
the unit frame with a static safe wrist strap.
CAUTION
Unplug all controller module wire harness
connectors before performing arc welding
on any part of the container.
CAUTION
Do not attempt to use an ML2i PC card in an
ML3 equipped unit. The PC cards are physi-
cally different and will result in damage to
the controller.
CAUTION
When condenser water flow is below 11 lpm
(3 gpm) or when water-cooled operation is
not in use, the CFS switch MUST be set to
position ”1” or the unit will not operate
properly.
Downloaded from ManualsNet.com search engine

T--334
Safety--3
CAUTION
Pre-trip inspection should not be per-
formed with critical temperature cargoes in
the container.
CAUTION
When Pre-Trip key is pressed, economy, de-
humidification and bulb mode will be deac-
tivated. At the completion of Pre-Trip activi-
ty, 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 test Auto 2 runs to comple-
tion without being interrupted, the unit will
terminate pre-trip and display “Auto 2”
“end.” The unit will suspend operation until
the user depresses 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 suc-
tion 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
Use only Carrier Transicold approved
Polyol Ester Oil (POE) - EAL 32ST compres-
sor oil with R-134a. Buy in quantities of one
quart or smaller. When using this hygro-
scopic 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 suc-
tion modulating valve powerhead assem-
bly. Doing so may result in damage to pis-
ton.
CAUTION
The unit must be OFF whenever a program-
ming card is inserted or removed from the
controller programming port.
CAUTION
Do not allow moisture to enter wire splice
area as this may affect the sensor resis-
tance.
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
orthestylusforcemaybealtered.
CAUTION
The inside mechanism of the recorder,
particularly the inside of the element
housing, should never be 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
Recorder element capillary tubing may be
bent, but never sharper than 1/2” radius;
extra care should be taken when bending
adjacent to welds. The bulb should never
be bent, as this will affect calibration.
Downloaded from ManualsNet.com search engine

1--1 T-334
SECTION 1
INTRODUCTION
1.1 INTRODUCTION
The Carrier Transicold model 69NT40-551-500 to 599
series units are of lightweight aluminum frame
construction, designed to fit in the front of a container
and serve as the container’s front wall.
They are one piece, self-contained, all electric units
which includes 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 (Hz) power. An optional
autotransformer may be fitted to allow operation on
nominal 190/230, 3-phase, 50/60 Hz 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 3
microprocessor. The controller will operate
automatically to select cooling, holding or heating as
required to maintain the desired set point temperature
within very close limits. The unit may also be equipped
with an electronic temperature recorder.
The controller has 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 plate
located near the economizer heat exchanger, on the
back wall of the condenser section. The plate provides
the unit model number, the unit serial 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 may be obtained in the Container Identification
Matrix located in the Container Products Group
Information Center available to authorized Carrier
Transicold Service Centers.
1.3 OPTION DESCRIPTION
Various options may be factory or field equipped to the
base unit. These options are listed in the tables and
described in the following subparagraphs.
1.3.1 Battery
The refrigeration controller may be fitted with standard
replaceable batteries or a rechargeable battery pack.
Rechargeable battery packs may be fitted in the
standard or in a secure location.
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 dehumidification mode, the controller will
operate to reduce internal container moisture level.
1.3.3 Control Box
Units are equipped with either an aluminum or
composite material box and may be fitted with a lockable
door.
1.3.4 Temperature Readout
The unit is fitted with suction and discharge temperature
sensors. The sensor readings may be viewed on the
controller display.
1.3.5 Pressure Readout
The unit is fitted with suction and discharge transducers.
The transducer readings may be viewed on the
controller display.
1.3.6 USDA
The unit may be supplied with fittings for additional
temperature probes which allow recording of USDA
Cold Treatment data by the integral DataCORDER
function of the Micro-Link refrigeration 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 is accessible from the front of the container
and the other is 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.
Unless otherwise indicated, the receptacle is mounted
at the control box location.
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, equipped
with suction, discharge and economizer service
connections.
1.3.11 Condenser Coil
The unit is fitted a four row coil using 7mm tubing.
Downloaded from ManualsNet.com search engine

1--2
T-334
1.3.12 Autotransformer
An autotransformer may be provided to allow operation
on 190/230, 3-phase, 50/60 Hz power. The
autotransformer raises the supply voltage to the
nominal 380/460 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 equipped 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
The units may be fitted with an electronic temperature
recording device manufactured by the Partlow
Corporation.
1.3.14 Gutters
Rain gutters may be fitted over the control box and
recorder section to divert rain away from the controls.
The different gutters include standard length bolted
gutters, extended length gutters and riveted gutters.
1.3.15 Handles
The unit may be equipped with handles to facilitate
access to stacked containers. These handles may
include fixed handles (located at the sides of the unit)
and/or a hinged 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 insertion of a thermometer to measure supply and/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 and 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 have 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 customer’s 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 fresh air makeup assembly is available
with a vent positioning sensor (VPS) and may also be
fitted with screens.
1.3.24 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.
1.3.25 Evaporator
Evaporator section is equipped with a hermetic thermal
expansion valve. The evaporator may also be equipped
with an expansion bypass solenoid valve (XBSV).
1.3.26 Evaporator Fan Operation
Two evaporator fan motor operation systems are
available. On units with Normal Evaporator Fan
operation, opening of an evaporator fan internal
protector will shut down the unit. On units equipped with
Single Evaporator Fan capability, additional relays are
installed to allow the unit to continue to operate on a
single fan. Units may also be equipped with single phase
or three--phase evaporator fan motors.
1.3.27 Labels
Operating Instruction and Function Code listing labels
differ, depending on the options installed. For example,
additional operating instructions are required to
describe start-up of a unit equipped with an
autotransformer. Labels available with additional
languages are listed in the parts list.
1.3.28 Plate Set
Each unit is equipped with a tethered set of wiring
schematic and wiring diagram plates. The plate sets are
ordered using a seven digit base part number and a two
digit dash number.
1.3.29 Controller
Two different controllers are available:
1. Remanufactured - Controller is the equivalent of a
new OEM controller and is supplied with a 12 month
warranty.
2. Repaired - Controller has had previous faults repaired
and upgraded with the latest software.
Note: Repaired controllers are NOT to be used for
warranty repairs; only full OEM Remanufactured
controllers are to be used.
Controllers will be factory equipped with the latest
version of operational software, but will NOT be
configured for a specific model number and will need to
be configured at the time of installation or sale.
1.3.30 Condenser Grille
Two styles of condenser grilles are available: direct
bolted grilles and hinged grilles.
1.3.31 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.
Downloaded from ManualsNet.com search engine

T-334
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. The unit model number, serial number and
parts identification number can be found on 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
provide ventilation for commodities that require fresh air
circulation.
1
2
8
3
13
4
14
16
9
18
12
15
10
11
5
6
17
7
1. Access Panel (Evap. Fan #1)
2. Fork Lift Pockets
3. Control Box
4. Compressor
5. Economizer
6. Filter Drier
7. Receiver or Water Cooled Condenser
8. Unit Serial Number, Model Number and
Parts Identification Number (PID) Plate
9. Power Cables and Plug
10. Condenser Fan
11. Autotransformer (Location)
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
Downloaded from ManualsNet.com search engine

2--2T-334
2.1.3 Evaporator Section
The evaporator section (Figure 2--2) contains the return
temperature sensor, humidity sensor, thermostatic
expansion valve, suction modulation valve, dual speed
evaporator fans (EM1 and EM2), evaporator coil and
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.
Most evaporator components are accessible by
removing the upper rear panel (as shown in the
illustration) or by removing the front access panels.
Components not readily accessible via these locations
are defrost heaters and suction temperature sensor.
18
12
3
4
5
6
7
8
9
10
11
12
14
13
15
16
17
WITH
EXPANSION
BYPASS
1. Evaporator Fan Motor #1
2. Return Recorder Sensor/Temperature Sensor
3. Humidity Sensor
4. Evaporator Fan Motor #2
5. Evaporator Coil
6. Evaporator Coil Heaters (Underside of Coil)
7. Heater Termination Thermostat
8. Defrost Temperature Sensor
9. Evaporator Expansion Valve (TXV)
10. Evaporator Expansion Valve Bypass Solenoid
Valve (XBSV)
11. Liquid To Evaporator Expansion Valve
12. To Compressor Suction
13. Evaporator Expansion Valve Bulb
(Under Insulation
14. Interrogator Connector (Rear)
15. USDA Probe Receptacle PR2
16. USDA Probe Receptacle PR1
17. USDA Probe Receptacle PR3
18. Cargo Probe Receptacle PR4
Figure 2--2 Evaporator Section
Downloaded from ManualsNet.com search engine

T-334
2--3
2.1.4 Compressor Section
The compressor section includes the compressor (with
high pressure switch), a discharge pressure transducer
and the suction pressure transducers.
The supply temperature sensor, supply recorder sensor
and ambient sensor are located to the left of the
compressor.
Suction modulation valve is located behind the control
box.
14
1
22
2
10 11
16
17
12
14
3
19
21
14
7
8
9
15
20
18
13
4
5
6
1. Compressor Guard
2. Supply Air Thermometer Port (location)
3. Compressor
4. Discharge Connection (Hidden)
5. Economizer Connection
6. Suction Connection (Hidden)
7. Compressor Power Plug
8. Oil Drain
9 Compressor Sight Glass
10. Discharge Service Valve
11. Suction Modulating Valve
12. Suction Line
13. Compressor Suction Sensor (CPSS)
14. Access Valve/Fitting
15. Economizer Connection
16. Suction Strainer
17. Suction Pressure Transducer
18. Compressor Discharge Sensor (CPDS)
19. From Economizer
20. To Condenser Coil
21. To Unloader Solenoid Valve
22. Supply Temperature/Supply Recorder Sensor
Assembly
Figure 2--3 Compressor Section
Downloaded from ManualsNet.com search engine

2--4T-334
2.1.5 Air-Cooled Condenser Section
The air-cooled condenser section (Figure 2--4) consists
of the condenser fan, condenser coil, receiver, sight
glass/moisture indicator, liquid line service valve, filter
drier, fusible plug, economizer, unloader solenoid valve,
liquid injection valve, economizer expansion valve, and
economizer solenoid valve.
The condenser fan pulls air through the bottom of the
coil and discharges it horizontally through the
condenser fan grille.
5
6
1
24
3
7
8 9 10 11
12
13
14
15
16
1718
19
20
1. Grille and Venturi Assembly
2. Condenser Fan
3. Key
4. Condenser Fan Motor
5. Condenser Coil
6. Condenser Coil Cover
7. Receiver
8. Sight Glass
9. Filter Drier
10. Economizer
11. From Condenser Coil
12. To Compressor (Economizer)
13. Unloader Solenoid Valve
14. Liquid Injection Valve
15. Economizer Solenoid Valve
16. Economizer Expansion Valve
17. Liquid Line Service Valve
18. Access Valve
19. Sight Glass/Moisture Indicator
20. Fusible Plug
Figure 2--4 Air-Cooled Condenser Section
Downloaded from ManualsNet.com search engine

T-334
2--5
2.1.6 Water-Cooled Condenser Section
The water-cooled condenser section (Figure 2--5)
consists of a water-cooled condenser, sight glass,
rupture disc, filter drier, water couplings, water pressure
switch, economizer, unloader solenoid valve (USV),
liquid injection valve (LIV), economizer expansion valve
(EEV), economizer solenoid valve (ESV), and
moisture/liquid indicator.
The water cooled condenser replaces the standard unit
receiver.
1234
10
11
56 7 8
9
121314151617
1. Water-Cooled Condenser
2. Rupture Disc
3. Moisture/Liquid Indicator
4. Filter Drier
5. From Air-Cooled Condenser
6. Economizer
7. To Evaporator Expansion Valve
8. Unloader Solenoid Valve (USV)
9. Liquid Injection Valve (LIV)
10. Economizer Solenoid Valve (ESV)
11. Economizer Expansion Valve (EEV)
12. Self Draining Coupling (Water Out)
13. Liquid Line Service Valve/Connection
14. Coupling (Water In)
15. Access Valve/Connection
16. Water Pressure Switch
17. Sight Glass
Figure 2--5 Water-Cooled Condenser Section
Downloaded from ManualsNet.com search engine

2--6T-334
2.1.7 Control Box Section
The control box (Figure 2--6) includes: the manual
operation switches, circuit breaker (CB-1), compressor,
fan and heater contactors, control power transformer,
fuses, key pad, display module, current sensor module,
controller module and the communications interface
module.
2.1.8 Communications Interface Module
The communications interface module is a slave
module that 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 master system technical manual
for further information.
1920 131518
12 3 4 5 6
8
10
7
914 111216 17
Contactor Arrangement
Normal Fan Operation
Contactor Arrangement
Three-Phase Evaporator Motors
CH PA HR
CF ES EF
PB
PA HR
CF ES EF
PB
Contactor Arrangement Shown: Single Fan Capability
1. Compressor Phase A Contactor -- PA
2. Compressor Phase B Contactor -- PB
3. Heater Contactor -- HC
4. Display Module
5. Communications Interface Module
6. Controller/DataCORDER Module (Controller)
7. Key Pad
8. Remote Monitoring Receptacle
9. Controller Battery Pack (Standard Location)
10. Interrogator Connector (Box Location)
11. Fan Mode Switch
12. Emergency Bypass Switch
13. Control Transformer
14. Evaporator Fan Contactor - EF or S2
15. Evaporator Fan Contactor - ES or E2
16 Evaporator Fan Contactor - S1
17 Evaporator Fan Contactor - E1
18. Condenser Fan Contactor
19. Circuit Breaker - 460V
20. Current Sensor Module
Figure 2--6 Control Box Section
Downloaded from ManualsNet.com search engine