Carrier TRANSICOLD 69NT40-511-200 Operation manual

Models
69NT40-511-200
to
69NT40-511-299
T-294 Rev A
Container
Refrigeration
Unit
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Carrier Transicold Division, Carrier Corporation, P.O. Box 4805, Syracuse, N.Y. 13221
OPERATION AND
SERVICE MANUAL
ECarrier Corporation 2000 SPrinted in U. S. A. 0200
CONTAINER REFRIGERATION UNIT
MODELS
69NT40-511-200
to
69NT40-511-299
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Safety-1 T-294-01
SAFETY SUMMARY
GENERAL SAFETY NOTICES
The following general safety notices supplement the specific warnings and cautions appearing elsewhere in this
manual. They are recommended precautions that must be understood and applied during operation and maintenance
oftheequipmentcoveredherein.Thegeneralsafetynoticesarepresentedinthefollowingthreesectionslabeled: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
Aninjury,nomatterhowslight,shouldnevergounattended.Alwaysobtainfirstaidormedicalattentionimmediately.
OPERATING PRECAUTIONS
Always wear safety glasses.
Keep hands, clothing and tools clear of the evaporator and condenser fans.
Noworkshouldbeperformedontheunituntilallcircuitbreakers,start-stopswitchesareturnedoff,andpowersupply
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.
Besurepoweristurnedoffbeforeworkingonmotors,controllers,solenoidvalvesandelectricalcontrolswitches.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.
Whenperforminganyarcweldingontheunitorcontainer,disconnectallwireharnessconnectorsfromthemodulesin
both control boxes. Do not remove wire harness from the modules unless you aregrounded to the unit frame witha
static safe wrist strap.
In case of electrical fire, open circuit switch and extinguish with CO
2
(never use water).
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Safety-2T-294-01
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 tothe refrigeration unit andappear elsewherein thismanual. Theserec-
ommendedprecautionsmustbeunderstoodandappliedduringoperationandmaintenanceoftheequipmentcovered
herein.
WARNING
When servicing the unit, use caution when handling R-134a. The refrigerant when in contact with
high temperatures (about 1000_F) will decompose into highly corrosive and toxic compounds.
WARNING
Be sure to avoid refrigerant coming in contact with the eyes. Should refrigerant come in contact
with the eyes, wash eyes for a minimum of 15 minutes with potable water only. THE USE OF
MINERAL OIL OR REFRIGERANT OILS IS NOT RECOMMENDED.
WARNING
Be sure to avoid refrigerant coming in contact with the skin. Should refrigerant come in contact
with the skin, it should be treated as if the skin had been frostbitten or frozen.
WARNING
Be sure ventilation in the workspace is adequate to keep the concentration of refrigerant below
1000 parts per million. If necessary, use portable blowers.
WARNING
Beware of rotating fan blades and unannounced starting of fans.
WARNING
Do not use a nitrogen cylinder without a pressure regulator. Never mix refrigerants with air for
leak testing. It has been determined that pressurized, air-rich mixtures of refrigerants and air can
undergo combustion when exposed to an ignition source.
WARNING
Never fill a refrigerant cylinder beyond its rated capacity. Cylinder may rupture due to excessive
pressure when exposed to high temperatures.
WARNING
When starting the unit, be sure that all manual refrigerant valves in the discharge line are open.
Severe damage could occur from extremely high refrigerant pressures.
WARNING
When brazing (soldering) refrigeration system, residual oil can cause a fire and potential injury.
Refertoproperprocedurebeforestartingrepair.
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iT-294-01
TABLE OF CONTENTS
Section Page
SAFETY SUMMARY Safety-1......................................................
GENERAL SAFETY NOTICES Safety-1..............................................
FIRST AID Safety-1...............................................................
OPERATING PRECAUTIONS Safety-1..............................................
MAINTENANCE PRECAUTIONS Safety-1...........................................
SPECIFIC WARNING AND CAUTION STATEMENTS Safety-2.........................
INTRODUCTION 1-1..........................................................
1.1 BRIEF UNIT DESCRIPTION 1-1.........................................
DESCRIPTION 2-1...........................................................
2.1 GENERAL DESCRIPTION 2-1...........................................
2.2 REFRIGERATION SYSTEM DATA 2-8....................................
2.3 ELECTRICAL DATA 2-9................................................
2.4 POWER AUTOTRANSFORMER (TRANS) 2-10.............................
2.5 REFRIGERATION CIRCUIT WITH THE WATER-COOLED CONDENSER 2-11.
2.6 WATER-COOLED CONDENSER 2-11.....................................
2.6.1 Water--Cooled Condenser with Water Pressure Switch (WP) 2-11.....
2.6.2 Water-Cooled Condenser with Condenser Fan Switch (CFS) -- Optional 2-11
2.7 UPPER FRESH AIR MAKEUP VENT 2-13.................................
2.8 LOWER FRESH AIR MAKEUP VENT (Optional) 2-13........................
2.9 REMOTE MONITORING (RM) -- Optional 2-14..............................
2.10 SAFETY AND PROTECTIVE DEVICES 2-14...............................
MICROPROCESSOR 3-1......................................................
3.1 MICRO-LINK 2i CONTROLLER MODULE 3-1.............................
3.1.1 Brief Description 3-1....................................................
3.1.2 Controller Programming (Memory) Cards 3-2..............................
3.1.3 General Layout of the Controller Section 3-4..............................
3.1.4 Controller Function Codes 3-6...........................................
3.1.5 Controller Alarms 3-10...................................................
3.1.6 Condenser Pressure Control (CPC) 3-14...................................
3.1.7 Controller Temperature Control 3-14...............................
3.1.7.1 Perishable (Chill) Range Above --10_C(+14_F), or
-- 5_C(+23_F) Optionally. 3-14...........................
3.1.7.2 Frozen Range Below --10_C(+14_F), or
-- 5_C(+23_F) Optionally 3-17............................
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iiT-294-01
TABLE OF CONTENTS (CONTINUED)
Section Page
3.2 PRE-TRIP DIAGNOSTICS 3-17...........................................
3.2.1 Pre-Trip 3-18....................................................
3.2.2 Pre-Trip Mode 3-19..............................................
3.3 INTEGRATED DataCorder (Optional) 3-23.................................
3.3.1 Brief Description 3-23............................................
3.3.2 DataCORDER Configuration 3-24.................................
3.3.3 DataCORDER Function Codes 3-24...............................
3.3.4 DataCORDER Alarms 3-26.......................................
3.3.5 Access to DataCORDER Functions 3-28...........................
3.3.6 USDA/ Message Trip Comment 3-30...............................
3.3.7 USDA Recording 3-30...........................................
3.3.8 Pre-Trip Data Recording 3-30.....................................
3.3.9 DataCORDER Communications 3-30..............................
3.3.10 DataCORDER Scrollback 3-31....................................
3.4 USDA COLD TREATMENT PROCEDURE 3-31.............................
OPERATION 4-1.............................................................
4.1 PRE-TRIP INSPECTION (Before Starting) 4-1.............................
4.2 STARTING AND STOPPING INSTRUCTIONS 4-1.........................
4.3 AFTER STARTING INSPECTION 4-1.....................................
4.4 UNIT OPERATION 4-2..................................................
4.4.1 Crankcase Heater (CCH)-- Optional 4-2...........................
4.4.2 Probe Check Initiation (Optional) 4-2..............................
4.4.3 Cooling -- Controller Set BELOW --10_C(+14_F), or
-- 5_C(+23_F) optionally 4-4.....................................
4.4.4 Controller Set ABOVE --10_C(+14_F), or
-- 5_C(+23_F) optionally 4-4.....................................
4.4.5 Heating Mode 4-6..............................................
4.4.6 Defrost Mode 4-8...............................................
4.4.7 Arctic Mode 4-8................................................
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iii T-294-01
TABLE OF CONTENTS (CONTINUED)
Section Page
TROUBLESHOOTING 5-1.....................................................
5.1 UNIT WILL NOT START OR STARTS THEN STOPS 5-1....................
5.2 UNIT RUNS BUT HAS INSUFFICIENT COOLING 5-1......................
5.3 UNIT OPERATES LONG OR CONTINUOUSLY IN COOLING 5-1............
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 TEMPERATURE CONTROLLER MALFUNCTION 5-3......................
5.10 NO EVAPORATOR AIR FLOW OR RESTRICTED AIR FLOW 5-3............
5.11 THERMOSTATIC EXPANSION VALVE MALFUNCTION 5-4.................
5.12 POWER AUTOTRANSFORMER MALFUNCTION 5-4......................
5.13 WATER-COOLED CONDENSER OR WATER PRESSURE SWITCH 5-4......
SERVICE 6-1................................................................
6.1 REPAIRING THE REFRIGERATION SYSTEM 6-1.........................
6.2 PIERCING VALVES 6-1.................................................
6.3 MANIFOLD GAUGE SET 6-2............................................
6.4 REFRIGERANT RECOVERY 6-4........................................
6.5 REFRIGERANT LEAK CHECKING 6-6...................................
6.6 EVACUATION AND DEHYDRATION 6-6..................................
6.6.1 General 6-6...................................................
6.6.2 Preparation 6-6................................................
6.6.3 Procedure 6-6.................................................
6.7 REFRIGERANT CHARGE 6-7...........................................
6.7.1 Checking the Refrigerant Charge 6-7.............................
6.7.2 Adding Refrigerant to System (Full Charge) 6-7....................
6.7.3 Adding Refrigerant to System (Partial Charge) 6-7..................
6.7.4 Emergency Shipboard Refrigerant Charging Procedure 6-7..........
6.8 COMPRESSOR -- MODEL 06DR 6-9.....................................
6.8.1 Removal and Replacement of Compressor 6-9.....................
6.9 COMPRESSOR DISASSEMBLY 6-10.....................................
6.10 COMPRESSOR REASSEMBLY 6-13......................................
6.11 COMPRESSOR OIL LEVEL 6-14.........................................
6.12 FILTER-DRIER 6-15.....................................................
6.13 HIGH PRESSURE SWITCH (HPS) 6-15...................................
6.13.1 Replacing High Pressure Switch 6-15..............................
6.13.2 Checking High Pressure Switch 6-15..............................
6.14 EVAPORATOR COIL AND HEATER ASSEMBLY 6-16.......................
6.15 EVAPORATOR COIL HEATERS 6-16......................................
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ivT-294-01
TABLE OF CONTENTS (CONTINUED)
Section Page
6.16 EVAPORATOR FAN AND MOTOR ASSEMBLY 6-16........................
6.17 EVAPORATOR FAN MOTOR CAPACITORS 6-17...........................
6.18 CONDENSER COIL 6-18................................................
6.19 CONDENSER FAN AND MOTOR ASSEMBLY 6-18.........................
6.20 MAINTENANCE OF PAINTED SURFACES 6-19............................
6.21 POWER AUTOTRANSFORMER (TRANS) -- Optional 6-19...................
6.22 TRANSFORMER BRIDGING UNIT (TBU) 6-19.............................
6.23 SENSOR CHECKOUT PROCEDURE (AMBS, DTS, RRS, RTS, SRS & STS) 6-19
6.23.1 Checking Sensor (RRS, RTS, SRS or STS) 6-19....................
6.23.2 Replacing Sensor (STS and SRS) 6-20............................
6.23.3 Replacing Sensor (RRS and RTS) 6-21............................
6.23.4 Checking Sensor (AMBS or DTS) 6-21.............................
6.23.5 Replacing Sensor (AMBS or DTS) 6-21............................
6.24 STEPPER MOTOR SUCTION MODULATION VALVE (SMV) 6-22.............
6.25 HERMETIC THERMOSTATIC EXPANSION VALVE 6-24.....................
6.26 POWER FACTOR CORRECTOR CAPACITORS (PFC) 6-27..................
6.27 CONTROLLER/DATACORDER 6-27......................................
6.27.1 Controller/DataCORDER Programming Procedure 6-28..............
6.27.2 Controller Trouble-Shooting 6-29..................................
6.28 WATER-COOLED CONDENSER 6-30.....................................
ELECTRICAL WIRING SCHEMATIC AND DIAGRAMS 7-1........................
7.1 INTRODUCTION 7-1...................................................
INDEX INDEX-1...................................................................
LIST OF ILLUSTRATIONS
Figure Page
Figure 2-1 Refrigeration Unit -- Front Section 2-1................................
Figure 2-2 Evaporator Section 2-3.............................................
Figure 2-3 Compressor Section 2-4............................................
Figure 2-4 Condenser Section 2-5.............................................
Figure 2-5 Water-Cooled Condenser Section 2-6................................
Figure 2-6 Control Box Section 2-7............................................
Figure 2-7 Power Autotransformer 2-10.........................................
Figure 2-8 Refrigeration Circuit with Water-Cooled Condenser 2-12.................
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vT-294-01
LIST OF ILLUSTRATIONS (CONTINUED)
Figure Page
Figure 3-1 Micro-Link 2i Controller/DataCORDER Module 3-1.....................
Figure 3-2 Key Pad 3-4......................................................
Figure 3-3 Display Module 3-5................................................
Figure 3-4 Standard Configuration Report Sample 3-33...........................
Figure 3-5 Controller Set Point BELOW --10_C(+14_F), or --5_C(+23_F) optionally 3-34.
Figure 3-6 Controller Set Point ABOVE --10_C(+14_F), or --5_C(+23_F) optionally 3-34
Figure 4-1 Cooling Mode 4-5.................................................
Figure 4-2 Heating Mode 4-7.................................................
Figure 4-3 Defrost Mode 4-9..................................................
Figure 6-1 Piercing Valve 6-1.................................................
Figure 6-2 Manifold Gauge Set 6-2............................................
Figure 6-3 R-134a Manifold Gauge Set Connection 6-3..........................
Figure 6-4 Refrigerant Recovery Process Tubes 6-5.............................
Figure 6-5 Vacuum Pump Connections 6-8.....................................
Figure 6-6 Compressor -- Model 06DR 6-9......................................
Figure 6-7 Exploded View of Valve Plate 6-10....................................
Figure 6-8 Bottom Plate Removed 6-10.........................................
Figure 6-9 Oil Pump and Bearing Head 6-11.....................................
Figure 6-10 Low Profile Oil Pump 6-11...........................................
Figure 6-11 Motor End Cover 6-12...............................................
Figure 6-12 Crankshaft Assembly 6-12...........................................
Figure 6-13 Removing Equalizing Tube and Lock Screw Assembly 6-12..............
Figure 6-14 Terminal Mounting Assembly 6-12....................................
Figure 6-15 Suction Valve & Positioning Springs 6-13..............................
Figure 6-16 Piston Rings 6-13...................................................
Figure 6-17 Compressor Oil Pump End View 6-14.................................
Figure 6-18 Typical Setup for Testing High Pressure Switch 6-16....................
Figure 6-19 Evaporator Fan Assembly 6-17.......................................
Figure 6-20 Supply Sensor Positioning 6-20......................................
Figure 6-21 Sensor (RRS, RTS, SRS or STS) 6-20................................
Figure 6-22 Sensor and Cable Assembly (RRS, RTS, SRS or STS) 6-20.............
Figure 6-23 Return Sensor Positioning 6-21......................................
Figure 6-24 Sensor (AMBS or DTS) 6-22.........................................
Figure 6-25 Sensor and Wire Assembly (AMBS or DTS) 6-22.......................
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viT-294-01
LIST OF ILLUSTRATIONS (CONTINUED)
Figure Page
Figure 6-26 Stepper Motor Suction Modulation Valve (SMV) 6-22....................
Figure 6-27 Jumper Assembly 6-24..............................................
Figure 6-28 Hermetic Thermostatic Expansion Valve Bulb 6-25......................
Figure 6-29 Hermetic Thermostatic Expansion Valve 6-25..........................
Figure 6-30 Hermetic Thermostatic Expansion Valve Brazing Procedure 6-26.........
Figure 6-31 Controller side of the Control Box 6-28................................
Figure 6-32 Water-Cooled Condenser Cleaning -- Forced Circulation 6-31............
Figure 6-33 Water-Cooled Condenser Cleaning -- Gravity Circulation 6-31............
Figure 6-34 R-134a Compressor Pressure Versus Ambient Temperature 6-36.........
Figure 7-1 Electrical Schematic 7-2............................................
Figure 7-2 Electrical Wiring Diagram 7-4.......................................
LIST OF TABLES
Table Page
Table 1-1 Model Chart 1-2...................................................
Table 2-1 Safety and Protective Devices 2-14...................................
Table 3-1 Controller Configuration Variables 3-3................................
Table 3-2 Key Pad Function 3-4..............................................
Table 3-3 Controller Function Code Assignments 3-6...........................
Table 3-4 Controller Alarm Indications 3-11.....................................
Table 3-5 Pre-Trip Test Codes 3-19............................................
Table 3-6 DataCORDER Function Code Assignments 3-25.......................
Table 3-7 DataCORDER Alarm Indications 3-27.................................
Table 3-8 DataCORDER Alarm Configurations 3-28..............................
Table 3-9 DataCorder Standard Configuration 3-29..............................
Table 3-10 DataCORDER Pre-Trip Data 3-32....................................
Table 4-1 Electrical Control Positions -- BELOW --10_C(+14_F), or
-- 5_C(+23_F) optionally 4-10.........................................
Table 4-2 Electrical Control Positions -- ABOVE --10_C(+14_F), or
-- 5_C(+23_F) optionally 4-11.........................................
Table 6-1 Tools Required 6-32................................................
Table 6-2 AMBS, DTS, RRS, RTS, SRS and STS Temperature-Resistance Chart 6-32
Table 6-3 Recommended Bolt Torque Values 6-32...............................
Table 6-4 Wear Limits For Compressors 6-33...................................
Table 6-5 Compressor Torque Values 6-34......................................
Table 6-6 Temperature-Pressure Chart -- R-134a 6-35............................
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1-1 T-294-01
SECTION 1
INTRODUCTION
1.1 BRIEF UNIT DESCRIPTION
WARNING
It has been determined that pressurized,
air-rich mixtures of refrigerants and air can
undergo combustion when exposed to an
ignition source.
This manual contains Operating Data, Electrical Data
and Service Instructions for the refrigeration unit listed
in Table 1-1. NOTE
Beginning with early 1995 production, in
additiontoamodelnumber,CarrierTransicold
beganusingapartsidentification(PID)number
in the format NT0000. In the parts manual, the
PID number is shown in boldface to point out
parts variations within models. The PID
number must be included when ordering and
inquiring about your unit.
The unit, of lightweight aluminum frameconstruction,
is an all electric, one piece, self-contained cooling and
heating refrigeration unit (see Figure 2-1). The unit is
designed to fit in thefront of acontainer andto serveas
the container front wall. Forklift pockets are provided
for installation and removal of the unit.
The unit is complete with a charge of R-134a,
compressor lubricating oil (approved POE SW20
compressor oil for R-134a only), mode indicating
lights, and temperature controller, and is ready for
operation upon installation.
Someunitsaredualvoltageunitsdesignedtooperateon
190/230 or 380/460 volts AC, 3-phase, 50-60 hertz
power (refer to section 2.4). Other unitsare designed to
operate on 380/460 volts AC, 3-phase 50/60 hertz
poweronly. An externalautotransformerisrequiredfor
190/230 vac operation (refer to Figure 2-7 and section
2.4).
Operating control power is provided by a control
transformer which steps down the AC supply power
source to 18 and 24 volts AC, single phase control
power.
The temperature Controller/DataCORDER
(Micro-Link 2i) is a microprocessor-based controller
and an integrated electronic datalogging device. Refer
tosections3.1 and3.3. Oncethe temperaturecontroller
is set at a desired container temperature, the unit will
operate automatically to maintain the desired
temperature within very close limits. The control
system automatically selects cooling, holding or
heating as necessary to maintain the desired
temperature within the container.
WARNING
Beware of unannounced starting of the
evaporator and condenser fans. Do not open
the condenser fan grille before turning
power OFF and disconnecting power plug.
Some units may have a TransFRESH controlled
atmosphere system added. Contact TransFRESH
Corporation, P.O. Box 1788, Salinas, CA 93902 for
information on their system.
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1-2T-294-01
Table 1-1. Model Chart
MODEL PID
A
Cold
t
ment
sformer
r
-Cooled
e
nser
Condenser Coil
Discharge
Option
idification
n
sFresh
n
ications
e
Module
r
e Recorder
F
actor
o
r(PFC)
Option
e
tic Unit
e
Control Box
Schematic&Diagr
a
M
O
D
E
L
P
I
D
USD
A
Treat
m
Tran
s
Water- Conde
3Row 4Row
Suction &
D
Pressure
O
Dehumi
d
Tran
s
Commun
i
Interface
Temperatur
e
Power F
a
Correcto
r
Arctic
O
Herme
t
Composite
g
6
9
N
T
4
0
5
1
1
2
0
1
NT0448 P X X -- X-- P-- X-- X-- X-- 77-01698-38
69NT40-511-201 NT0569 P X X X -- -- P-- X-- X-- X X 77-01698-60
69NT40-511-201 NT0602 P X X X -- -- P X X -- X-- X X 77-01698-60
A = Factory Installed Pressure Gauges
B = Factory Installed Pressure Transducers
P = Provision
X = Features that apply to model
-- = Features that are not applicable to model
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2-1 T-294-01
SECTION 2
DESCRIPTION
2.1 GENERAL DESCRIPTION
a. Refrigeration Unit -- Front Section
The front section of the refrigeration unit shows access
to most parts of the unit (i.e., compressor, condenser,
receiver, etc.), whichwill bediscussed in more detailof
the following sections in 2.1. The upper access panels
allow front entry into the evaporator section, and the
center access panel allows access to the evaporator coil
heaters. The unit model number, serial number and
partsidentificationnumberwill befoundonthefrontof
the unit to the left of the compressor.
1
2
3
4
5
6
7
1. Access Panel (For Evap. Fan Motor #1)
2. Access Panel (For Heater)
3. Fork Lift Pockets
4. Unit Serial Number, Model Number and
Parts Identification Number (PID) Plate
5. Interrogator Connector (IC)
6. Lower Fresh Air Makeup Vent or Blank Plate --
Optional
7. Upper Fresh Air Makeup Vent and
Access Panel (For Evap. Fan Motor #2)
Figure 2-1. Refrigeration Unit -- Front Section
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2-2T-294-01
b. Evaporator Section
The evaporator section (see Figure 2-2) contains the
returntemperaturesensor(RTS),hermeticthermostatic
expansion valve, dual-speed evaporator fan motors
(EM1andEM2)andfans(2),evaporatorcoilandheater
(HR), drain pan heater (DPH), defrost heaters (DHBL,
DHBR, DHTKand DHTR), defrost terminationsensor
(DTS),heatterminationthermostat(HTT),interrogator
and USDA receptacles, and heat exchanger.
The evaporator fans circulate air throughout the
container by pulling air in the top of the refrigeration
unit, directingthe airthrough theevaporator coilwhere
it is either heated or cooled, and discharging the air
through the bottom of the refrigeration unit into the
container.
When transporting perishable (chilled) commodities,
the fan motors will normally be in high speed above
-- 1 0 _C(+14_F), or --5_C(+23_F) optionally.
The evaporator coil heaters are accessible by removing
the front lower access panel. The defrost termination
sensor is located on the coil center tube sheet and may
be serviced by removing the upper rear panel, or by
removing the left front upper access panel,
disconnecting the evaporator fan connector and
reaching through the access panel opening.
WARNING
Before servicing unit, make sure the unit
circuit breakers (CB-1, and an optional
CB-2 -- if equipped), and the start-stop
switch (ST) are in the OFF position. Also
disconnect power plug and cable.
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2-3 T-294-01
12
1
2
3
5
7
8
9
13
10
11
6
(RTS)(RRS)
14
15
16
17
18
4
1. Evaporator Fan Motor #1 (EM1)
2. Humidity Sensor (HS) -- Optional
3. Return Temperature Sensor (RTS)
4. Return Recorder Sensor (RRS) -- Optional
5. Evaporator Fan Motor #2 (EM2)
6. Power Factor Corrector (PFC)
7. Defrost Termination Sensor (DTS)
8. Heat Termination Thermostat (HTT)
9. Evaporator Coil
10. Evaporator Coil Heaters
11. Hermetic Thermostatic Expansion Valve
12. Drain Pan Heater (DPH)
13. Heat Exchanger
14. Interrogator Receptacle (IC) -- Optional
15. USDA Probe Receptacle (PR2) -- Optional
16. USDA Probe Receptacle (PR1) -- Optional
17. USDA Probe Receptacle (PR3) -- Optional
18. Cargo Probe Receptacle (PR4) -- Optional
Figure 2-2. Evaporator Section
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2-4T-294-01
c. Compressor Section
The compressor section includes the compressor (with
high pressure switch), power cable storage
compartment, and autotransformer (TRANS), which is
located to the left of the compressor.
This section also contains the stepper motor suction
modulation valve (SMV), quench expansion valve,
stepper motor drive (SD), and the discharge pressure
regulator valve.
The supply temperature sensor (STS), and ambient
sensor (AMBS) are located at the right side of the
compressor, and the suction line process tube.
1
2
3
4
5
6
7
11
10
14
9
13
15
12
16
8
1. Power Autotransformer (TRANS)
2. Power Cables and Plug
3. Compressor Sight Glass View Port
4. Compressor Guard
5. Supply Temperature Sensor (STS)
6. Ambient Sensor (AMBS)
7. Discharge Pressure Regulator Valve
8. Suction Line Process Tube
9. Quench Expansion Valve
10. Stepper Motor Suction Modulation Valve (SMV)
11. Stepper Motor Drive (SD)
12. Suction Flange
13. Compressor Sight Glass
14. Compressor Motor (CP)
15. Discharge Flange
16. High Pressure Switch (HPS)
Figure 2-3. Compressor Section
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2-5 T-294-01
d. Condenser Section
The condensing section consists of a condenser fan
motor (CM), a condenser fan and an air-cooled
condenser coil. When the unitis operating,air ispulled
inthebottomofthecoilanddischargedhorizontallyout
through the front of the condenser fan grille.
1
2
3
4
5
6
78
2
1. Grille and Venturi Assembly
2. Retaining Screw
3. Condenser Fan
4. Key
5. Condenser Fan Motor (CM)
6. Condenser Coil Cover
7. Condenser Coil
8. Condenser Motor Mounting Bracket
Figure 2-4. Condenser Section
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2-6T-294-01
e. Water-Cooled Condenser Section
The water-cooled condenser section consists of
water-cooled condenser, sight glass, and rupture disc,
condenserpressuretransducer(CPT),filter-drier,water
hook-upcouplings,waterpressureswitch(WP),andthe
liquid line process tube
78
123 4
6
95
1. Water-Cooled Condenser
2. Rupture Disc
3. Condenser Pressure Transducer (CPT)
4. Filter-Drier
5. Moisture Liquid Indicator/Sight Glass
6. Coupling (Water In)
7. Self Draining Coupling (Water Out)
8. Liquid Line Process Tube
9. Water Pressure Switch (WP)
Figure 2-5. Water-Cooled Condenser Section
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2-7 T-294-01
f. Control Box Section
The control box (see Figure 2-6) includes the manual
switches (ST and MDS), circuit breaker (CB-1),
contactors(CF,CH,EF,ESandHR),hourmeter(HM),
transformer (TR), fuses (F), key pad (KP), display
module, current sensor module (CS),
Controller/DataCORDER module, and an optional
remote monitoring unit (CI).
2
121415 13 1116 10
134567
89
1. Compressor Contactor (CH)
2. Hour Meter (HM)
3. Heater Contactor (HR)
4. Display Module
5. Remote Monitoring Unit (CI) -- Optional
6. Controller/DataCORDER Module
7. Key Pad
8. Start-Stop Switch (ST)
9. Manual Defrost Switch (MDS)
10. Controller/DataCORDER Battery Pack -- Optional
11. Control Transformer (TR)
12. Evaporator Fan Contactor (EF) High Speed
13. Evaporator Fan Contactor (ES) Low Speed
14. Condenser Fan Contactor (CF)
15. Circuit Breaker (CB-1) -- 460V
16. Current Sensor Module (CS)
Figure 2-6. Control Box Section
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2-8T-294-01
2.2 REFRIGERATION SYSTEM DATA
Number of Cylinders 6
Model 06DR
CFM 41
a
C
o
m
p
r
e
s
s
o
r
/
M
o
t
o
r
A
s
s
e
m
b
l
y
Weight (Dry) 118kg(260lb)
a
.
C
o
m
p
r
e
s
s
o
r
/
M
o
t
o
r
A
s
s
e
m
b
l
y
(
CP
)
Approved Oil Castrol Icematic -- SW20
(
C
P
)
Oil Charge 3.6 liters (7.6 U.S. pints)
Oil Sight Glass The oil level range, with the compressor off,
should be between the bottom and one-eighth
level of the capacity of the sight glass.
b. Expansion Valve Superheat Verify at --18
_ C
(0
_ F) container box
temperature 4.48 to 6.67
_ C(8to12 _ F)
c. Heater Termination Thermostat Opens 54 (¦3)
_ C = 130 (¦5) _ F
c
.
H
e
a
t
e
r
T
e
r
m
i
n
a
t
i
o
n
T
h
e
r
m
o
s
t
a
t
(HTT) Closes 38 (¦4)
_ C = 100 (¦7) _ F
d
H
i
g
h
P
r
e
s
s
u
r
e
S
w
i
t
c
h
(
H
P
S
)
Cutout 25 (¦1.0) kg/cm@= 350 (¦10) psig
d
.
H
i
g
h
P
ressure
S
w
i
tc
h
(
H
P
S
)
Cut-In 18 (¦0.7) kg/cm@= 250 (¦10) psig
Charge Requirements -- R-134a
e. Refrigerant Charge Unit Configuration 2* row
condenser 3* row condenser 4* row condenser
e
.
R
e
f
r
i
g
e
r
a
n
t
C
h
a
r
g
e
Water-Cooled
Condenser 4.5 kg (9.0 lbs) 4.88 kg (10.75 lbs) 5.22 kg (11.5 lbs)
*RefertoTable1-1.
NOTE
When replacing components (f.) in section 2.2, refer to the installation instructions included with the
ordered new part for additional information.
Bursts at 35 ¦5% kg/cm@= (500 ¦5% psig)
f. Rupture Disc Torque
(P/N 14-00215-03) 1.4to2 mkg(10to15ft-lbs)
f
.
R
u
p
t
u
r
e
D
i
s
c
Torque
(P/N 14-00215-04) 6.2 to 6.9 mkg (45 to 50 ft-lbs)
g
. Condenser Pressure
Condenser Fan Starts The condenser fan will start if the condenser
pressure is greater than 14.06 kg/cm@(200
psig) OR the condenser fan is OFF for more
than 60 seconds.
g
.
C
o
n
d
e
n
s
e
r
P
r
e
s
s
u
r
e
Transducer (CPT)
Condenser Fan Stops The condenser fan will stop if the condenser
pressure is less than 9.14 kg/cm@(130 psig)
AND the condenser fan remains ON for at least
30 seconds.
h. Unit Weight Refer to unit model number plate, see Figure 2-1 for location of plate.
i
W
a
t
e
r
P
r
e
s
s
u
r
e
S
w
i
t
c
h
(
W
P
)
Cut-In 0.5 ¦0.2 kg/cm@(7 ¦3psig)
i
.
W
ater
P
ressure
S
w
i
tc
h
(
W
P
)
Cutout 1.6 ¦0.4 kg/cm@(22 ¦5psig)
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