Service manual

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Container Refrigeration

T-318 Rev A

OPERATION AND SERVICE

for

69NT40-541-300 TO 399

Container Refrigeration Units

Summary of content (115 pages)

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r Container Refrigeration OPERATION AND SERVICE for 69NT40-541-300 TO 399 Container Refrigeration Units T-318 Rev A
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OPERATION AND SERVICE MANUAL CONTAINER REFRIGERATION UNIT Models 69NT40-541-300 to 399
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TABLE OF CONTENTS PARAGRAPH NUMBER Page GENERAL SAFETY NOTICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety--1 FIRST AID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety--1 OPERATING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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TABLE OF CONTENTS - Continued PARAGRAPH NUMBER Page DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2--1 2.1 GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2--1 2.1.1 Refrigeration Unit -- Front Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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TABLE OF CONTENTS - Continued PARAGRAPH NUMBER Page 3.6.5 Thermistor Format (dCF04) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3--9 3.6.6 Sampling Type (dCF05 & dCF06) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3--9 3.6.7 Alarm Configuration (dCF07 -- dCF10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3--9 3.6.
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TABLE OF CONTENTS - Continued PARAGRAPH NUMBER Page 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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TABLE OF CONTENTS - Continued PARAGRAPH NUMBER Page 6.15 EVAPORATOR COIL AND HEATER ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6--14 6.15.1 Evaporator Coil Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6--14 6.15.2 Evaporator Heater Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6--14 6.
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LIST OF ILLUSTRATIONS FIGURE NUMBER Figure 2-1 Refrigeration Unit -- Front Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2-2 Evaporator Section -- Units With Center Access Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2-3 Compressor Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2-4 Condenser Section .
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LIST OF ILLUSTRATIONS - Continued FIGURE NUMBER Page Figure 6-25 DPRV Replacement Value Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6--18 Figure 6-26 Controller Section of the Control Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6--18 Figure 6-27 Sensor Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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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 of the equipment covered herein. The general safety notices are presented in the following three sections labeled: First Aid, Operating Precautions and Maintenance Precautions.
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SPECIFIC WARNING AND CAUTION STATEMENTS 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 WARNING Make sure power to the unit is OFF and power plug disconnected before replacing the compressor. Beware of unannounced starting of the evaporator and condenser fans.
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WARNING CAUTION With power OFF discharge the capacitor before disconnecting the circuit wiring. Pre-trip inspection should not be performed with critical temperature cargoes in the container. CAUTION WARNING The unit power plug must be disconnected to remove power from circuit breaker CB1 When Pre-Trip key is pressed, dehumidification and bulb mode will be deactivated. At the completion of Pre-Trip activity, dehumidification and bulb mode must be reactivated.
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CAUTION CAUTION Ensure that the thrust washer does not fall off dowel pins while installing oil pump. The unit will remain in the full cooling mode as long as the emergency bypass switch is in the BYPASS position and the MODE SWITCH is in the FULL COOL position. If the cargo may be damaged by low temperatures, the operator must monitor container temperature and manually cycle operation as required to maintain temperature within required limits.
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CAUTION CAUTION Do not allow moisture to enter wire splice area as this may affect the sensor resistance. DO NOT move the stylus arm up and down on the chart face. This will result in damage to the stylus motor gear. 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.
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SECTION 1 INTRODUCTION 1.1 INTRODUCTION 1.3.4 Display Module The Carrier Transicold model 69NT40-541-300/399 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. The unit may be fitted with a backlit Liquid Crystal Display (LCD) or a Light Emitting Diode (LED) Display. 1.3.5 Temperature Readout The unit may be fitted with suction and discharge temperature sensors.
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1.3.14 Temperature Recorder 1.3.25 Arctic Mode The units may be fitted with an electronic temperature recording device. To improve operation in cold ambients, the unit may be fitted with a crankcase heater. The crankcase heater is operated any time the unit is under power and the compressor is not running. The purpose of the heater is to warm the compressor oil and boil off any liquid refrigerant that may be present in the crankcase. 1.3.
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SECTION 2 DESCRIPTION 2.1 GENERAL DESCRIPTION parts identification number can be found on the serial plate to the left of the compressor. 2.1.1 Refrigeration Unit -- Front Section 2.1.2 Fresh Air Makeup Vent 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 The function of the upper or lower makeup air vent is to provide ventilation for commodities that require fresh air circulation.
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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. 2.1.3 Evaporator Section The evaporator section (Figure 2-2) contains the return temperature sensor, humidity sensor, thermostatic expansion valve, dual-speed evaporator fans (EM1 and EM2), evaporator coil and heaters, defrost temperature sensor, heat termination thermostat, and heat exchanger.
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discharge pressure regulating valve, discharge temperature sensor, and discharge/suction pressure transducers. The supply temperature sensor, supply recorder sensor, and ambient sensor are located at the right side of the compressor. 2.1.4 Compressor Section The compressor section includes the compressor (with high pressure switch), power cable storage compartment, and autotransformer.
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line valve, filter-drier, condenser pressure transducer, and fusible plug. The condenser fan pulls air in through the bottom of the coil and discharges it horizontally out through the condenser fan grille. 2.1.5 Air-cooled Condenser Section The air-cooled condenser section (Figure 2-4) consists of the condenser fan, condenser coil, receiver with sight glass/moisture indicator, quench valve, manual liquid 6 7 5 2 3 4 1 8 9 15 10 11 12 13 14 1. 2. 3. 4. 5. 6. 7. 8.
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quench expansion valve, rupture disc, condenser pressure transducer, filter-drier, water couplings, and water pressure switch. The water-cooled condenser replaces the standard unit receiver. 2.1.6 Water-Cooled Condenser Section The water-cooled condenser section (Figure 2-5) consists of a water-cooled condenser, sight glass, 3 4 5 6 7 8 2 1 9 11 1. 2. 3. 4. 5. 6. 10 Sight Glass 7. Liquid Line Service Valve Water-Cooled Condenser 8. Moisture/Liquid Indicator Rupture Disc 9.
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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, keypad, display module, current sensor module, controller module and the communications interface module. 1 21 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 2.1.8 Communications Interface Module The communications interface module is a slave module, which allows communication with a master central monitoring station.
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2.2 REFRIGERATION SYSTEM DATA a. Compressor/Motor Assembly Number of Cylinders Model CFM Weight (Dry) Approved Oil Oil Charge degrees Oil Sight Glass b. Expansion Valve Superheat c. Heater Termination Thermostat d. High Pressure Switch Verify at -18 degrees C (0 degrees F) container box temperature Opens Closes Cutout Cut-In Unit Configuration e. Refrigerant Charge Water-Cooled Condenser Receiver 6 06DR 41 118 kg (260 lb) Castrol Icematic 3.6 liters (7.6 U.S.
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2.3 ELECTRICAL DATA CB-1 Trips at CB-2 (50 amp) Trips at a. Circuit Breaker CB-2 (70 amp) Trips at b. Compressor Full Load Amps (FLA) Motor c. Condenser Fan Motor d. Evaporator Coil Heaters e. Evaporator Fan Motor(s) f.
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2.3 ELECTRICAL DATA (Continued) Orange wire Power Red wire Output Brown wire Ground Input voltage 5 vdc Output voltage 0 to 3.3 vdc h. Humidity Sensor Output voltage readings verses relative humidity (RH) percentage: 30% 0.99 V 50% 1.65 V 70% 2.31 V 90% 2.97 V i. Controller Setpoint Range -30 to +30 C ( -22 to +86 F) 2.4 SAFETY AND PROTECTIVE DEVICES Unit components are protected from damage by safety and protective devices listed in the following table.
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2.5 REFRIGERATION CIRCUIT Starting at the compressor (see Figure 2-7, upper schematic), the suction gas is compressed to a higher pressure and temperature. The gas flows through the discharge service valve into the pressure regulating valve. During periods of low ambient operation, the discharge pressure regulating valve modulates the flow of refrigerant to maintain a pre -set minimum discharge pressure. Refrigerant gas then moves into the air-cooled condenser.
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EVAPORATOR TXV TXV BULB CONDENSER HEAT EXCHANGER DISCHARGE PRESSURE REGULATING VALVE PRESSURE TRANSDUCER SERVICE VALVE MODULATING VALVE QUENCH VALVE PRESSURE TRANSDUCER FUSIBLE PLUG Suction Liquid Discharge FILTER DRIER SIGHT GLASS SERVICE VALVE RECEIVER Circuit with Receiver EVAPORATOR TXV TXV BULB CONDENSER HEAT EXCHANGER DISCHARGE PRESSURE REGULATING VALVE FUSIBLE PLUG MODULATING VALVE SERVICE VALVE SIGHT GLASS PRESSURE TRANSDUCER WATER-COOLED CONDENSER Suction Liquid Discharge SER
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SECTION 3 MICROPROCESSOR operating parameters and cargo temperature parameters for future retrieval. Coverage of the temperature control software begins with paragraph 3.2. Coverage of the DataCORDER software is provided in paragraph 3.6. 3.1 TEMPERATURE CONTROL MICROPROCESSOR SYSTEM The temperature control Micro-Link 3 microprocessor system (see Figure 3-1) consists of a keypad, display module, control module (controller), and interconnecting wiring.
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Table 3-1 Keypad Function 3.1.1 Keypad The keypad (Figure 3-2) is mounted on the right-hand side of the control box. The keypad consists of 11 push button switches that act as the user’s interface with the controller. Descriptions of the switch functions are provided in Table 3-1. KEY Code Select Accesses function codes. Pre-Trip Alarm List CODE SELECT PRE TRIP ALARM LIST MANUAL DEFROST/ INTERVAL FUNCTION Manual Defrost/ Interval Enter Arrow Up ENTER Displays the pre-trip selection menu.
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1 1. 2. 3. 4. 2 Mounting Screw Micro-Link 3 Controller Connectors Test Points 3.1.3 Controller 3 3 4 5 3 6 7 3 8 3 5. 6. Fuses Control Circuit Power Connection (Location: In back of controller) 7. Software Programming Port 8. Battery Pack Figure 3-4 Micro-Link 3 Controller c. Provide ability to read, and if applicable, modify the configuration software variables, operating software function codes, and alarm code indications. CAUTION d.
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To access the function codes, perform the following: below the frozen setpoint and then adjust to 24 hours thereafter. All defrost interval times reflect the number of compressor runtime hours since the last defrost de-ice cycle. The minimum defrost interval under the automatic setting is three hours, while the maximum is 24.
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controller will activate the heat relay to begin dehumidification. 1. The humidity sensor reading is above the set point. 2. The supply air temperature is less than 0.25 degrees C above set point. 3. The heater debounce timer (three minutes) has timed out. 4. Heater termination thermostat (HTT) is closed. If the above conditions remain true for at least one hour, the evaporator fans will switch from high to low speed operation.
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additional capability of selecting dehumidification set points from 60 to 95% (instead of the normal 65 to 95%). NOTE On start up of the unit, SMV will reset to a known open position. This is accomplished by assuming the valve was fully open, driving it fully closed, resetting the percentage open to zero, then opening to a known 21% staging position. In addition, if bulb mode is active, function code Cd37 may be set to override the previous defrost termination thermostat settings (refer to paragraph 4.10.
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To Display Alarm Codes: A detailed description of the pre-trip tests and test codes is provided in Table 3-9, page 3--21. Detailed operating instructions are provided in paragraph 4.8. a. While in the Default Display mode, press the ALARM LIST key. This accesses the Alarm List Display Mode, which displays any alarms archived in the Alarm Queue. 3.6 DataCORDER 3.6.
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3. If a longer time is desired, press the ENTER key to extend the time to 30 seconds. b. Configuration Software The configuration software controls the recording and alarm functions of the DataCORDER. Reprogramming to the factory-installed configuration is achieved via the same configuration card as the unit control module software. Changes to the software may be made made using the Data View integration device. A listing of the configuration variables is provided in Table 3-2.
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If a probe alarm is configured to OFF, then the alarm for this probe is always disabled. Table 3-3 DataCORDER Standard Configurations Standard Config. 2 sensors (dCF02=2) 5 sensors (dCF02=5) 6 sensors (dCF02=6) 9 sensors (dCF02=9) Description If a probe alarm is configured to ON, then the associated alarm is always enabled. 2 thermistor inputs(supply & return) If the probes are configured to AUTO, they act as a group.
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Raw Data Report for ABC1234567 May 31, 2003 to Jun 04, 2003 System Configuration at the Time of Interrogation: Interrogated On Sept 05, 2003 Extracted by DataLine Rev 1.0.0 Controller Software: 5120 Controller Serial #: 04163552 Bill of Lading #: 1 Origin: Origin Date: Destination: Discharge Date: Comment: DataLine Tool Probe Calibration Readings: USDA1: 0.0 USDA2: 0.0 USDA3: 0.0 Cargo: 0.
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screen view of the data, hard copy report generation, cold treatment probe calibration, and file management. Refer to Data Retrieval manual 62-10629 for a more detailed explanation of the DataLINE interrogation software. The DataLine manual may be found on the Internet at www.container.carrier.com. 3.6.9 Pre-Trip Data Recording The DataCORDER will record the initiation of a pre-trip test (refer to paragraph 3.5) and the results of each of the tests included in pre-trip.
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b. Pre-cool the container to the treatment temperature or below. c. Install the DataCORDER module battery pack (if not already installed). d. Place the three probes. The probes are placed into the pulp of the fruit (at the locations defined in the following table) as the product is loaded. Place in pulp of the product located next to the return air intake.
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Table 3-4 Controller Configuration Variables CONFIGURATION NUMBER TITLE DEFAULT OPTION CnF01 Bypass Valve Enable In Out CnF02 Evaporator Fan Speed dS (Dual) SS (Single) CnF03 Control Sensors FOUr duAL CnF04 Dehumidification Mode On OFF CnF05 Reserved for future use ---------n/a CnF06 Condenser Fan Speed Select OFF (Single) On (Variable) CnF07 Unit Selection, 20FT/ 40FT/45FT 40ft 20ft,45 CnF08 Single Phase/Three Phase Motor 1Ph 3Ph CnF09 Refrigerant Selection r134a r12, r22, bLEnd CnF10 Two Speed Compres
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Table 3-5 Controller Function Codes (Sheet 1 of 4) Code No. TITLE DESCRIPTION Note: If the function is not applicable, the display will read “-- -- -- -- -- ” Display Only Functions Suction Modulation Cd01 Valve Opening (%) Displays the SMV percent open. The right display reads 100% when the valve is fully open and 0% when the valve is fully closed. The valve will usually be at 21% on start up of the unit except in very high ambient temperatures.
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Table 3-5 Controller Function Codes (Sheet 2 of 4) Code No. TITLE Controlled Cd24 Atmosphere State Compressor Run Cd25 Time Remaining Until Defrost Defrost Temperature Cd26 Sensor Reading DESCRIPTION Not used in this application This code displays the time remaining until the unit goes into defrost (in tenths of an hour). This value is based on the actual accumulated compressor running time. Defrost temperature sensor reading is displayed.
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Table 3-5 Controller Function Codes (Sheet 3 of 4) Code No. TITLE Stagger Start Offset Cd31 Time (Seconds) DESCRIPTION The stagger start offset time is the amount of time that the unit will delay at start-up, thus allowing multiple units to stagger their control initiation when all units are powered up together.
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Table 3-5 Controller Function Codes (Sheet 4 of 4) Code No. TITLE DESCRIPTION Secondary Supply Cd38 Temperature Sensor Code Cd38 will display the current secondary supply temperature sensor reading for units configured for four probes. If the unit is configured with a DataCORDER, Cd38 will display “-- -- -- -- -- .” If the DataCORDER suffers a failure, (AL55) Cd38 will display the supply recorder sensor reading.
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Table 3-6 Controller Alarm Indications (Sheet 1 of 3) Code No. TITLE DESCRIPTION Evaporator Motor 1 AL11 IP Trip Alarm 11 is applicable to units with Single Evaporator Fan Capability (CnF32 set to 1EFO) only. The alarm is triggered if the evaporator fan motor #1 internal protector opens. If the alarm is active, probe check is deactivated. Evaporator Motor 2 AL12 IP Trip Alarm 12 is applicable to units with Single Evaporator Fan Capability (CnF32 set to 1EFO) only.
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Table 3-7 Controller Alarm Indications (Sheet 2 of 3) Code No. TITLE DESCRIPTION Alarm 54 is activated by an invalid primary supply temperature sensor reading that is sensed outside the range of -50 to +70 C (-58 F to +158 F) or if the probe check logic has determined there is a fault with this sensor. If Alarm 54 is activated and the primary supply is the control sensor, the secondary supply sensor Primary Supply Tem- will be used for control if the unit is so equipped.
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Table 3-8 Controller Alarm Indications (Sheet 3 of 3) Code No. TITLE DESCRIPTION Suction Pressure AL66 Transducer Failure Alarm 66 is triggered by a suction pressure transducer reading outside the valid range of 73.20 cm Hg (30 in Hg) to 32.34 Kg/cm2 (460 psig). This is a display alarm and has no associated failure action. Humidity Sensor AL67 Failure Alarm 67 is triggered by a humidity sensor reading outside the valid range of 0% to 100% relative humidity.
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Table 3-9 Controller Pre-Trip Test Codes (Sheet 1 of 4) Code No. TITLE DESCRIPTION NOTE “Auto” or “Auto1” menu includes the: P, P1, P2, P3, P4, P5, P6 and rSLts. “Auto2” menu includes P, P1, P2, P3, P4, P5, P6, P7, P8, P9, P10 and rSLts.“Auto3 menu includes P, P1, P2, P3, P4, P5, P6, P7, P8 and rSLts P Pre-Trip Initiated All lights and display segments will be energized for five seconds at the start of the pre-trip.
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Table 3-9 Controller Pre-Trip Test Codes (Sheet 2 of 4) Code No. TITLE DESCRIPTION Requirements: For units equipped with secondary supply probe only. Pass/Fail Criteria: The temperature difference between primary and secondary probe (supply) is compared. P5-1 Supply Probe Test NOTE If this test fails, “P5-1” and FAIL will be displayed. If both Probe tests (this and the SUPPLY/ RETURN TEST) pass, because of the multiple tests, the display will read ’P 5’ ’PASS’.
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Table 3-9 Temperature Controller Pre-Trip Test Codes (Sheet 3 of 4) Code No. TITLE DESCRIPTION Note, this test is skipped if the unit does NOT have: A compressor discharge sensor (CPDS). A discharge pressure transducer (DPT). Condenser pressure transducer (CPT). In addition, this test is skipped if: The sensed ambient temperature is less than 7 C (45 F). The return air temperature is less than -17.8 C (0 F).
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Table 3-9 Controller Pre-Trip Test Codes (Sheet 4 of 4) Code No. P8-2 P9-0 P10-0 P10-1 P10-2 T-318 TITLE DESCRIPTION Requirements: Test P8-1 must pass for this test to execute. Setup: The left display will read “P8-2,” and the right display will show the supply air temperature. A 60 minute timer is started. The unit will be required to maintain the 0 C temperature to within + or - 0.5 degrees C (0.9 degrees F) of set point until a DataCORDER recording is executed.
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Table 3-10 DataCORDER Function Code Assignments NOTE Inapplicable Functions Display “-- -- -- -- -- ” To Access: Press ALT. MODE key Code No. TITLE DESCRIPTION dC1 Recorder Supply Temperature Current reading of the supply recorder sensor. dC2 Recorder Return Temperature Current reading of the return recorder sensor. dC3-5 USDA 1,2,3 TemperCurrent readings of the three USDA probes. atures dC6-13 Network Data Points 1-8 Current values of the network data points (as configured).
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Table 3-11 DataCORDER Pre-Trip Result Records Test No.
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Table 3-12 DataCORDER Alarm Indications To Access: Press ALT. MODE key Code No. TITLE DESCRIPTION The supply recorder sensor reading is outside of the range of -50 C to 70 C (-58 F to +158 F) or, the probe check logic has determined there Recorder Supply Tem- is a fault with this sensor. dAL70 perature Out of Range NOTE The P5 Pre-Trip test must be run to inactivate the alarm.
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SECTION 4 OPERATION power source. Place circuit breaker (CB-1) in position “I” (ON). Close and secure control box door. 4.1 INSPECTION (Before Starting) WARNING 4.2.2 Connection to190/230 VAC Power An autotransformer (Figure 4-1) is required to allow operation on nominal 230 volt power. It is fitted with a 230 VAC cable and a receptacle to accept the standard 460 VAC power plug. The 230 volt cable is black in color while the 460 volt cable is yellow.
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bar, with 15 mm (0.6 inch) H2O external static above free blow. 4.3.1 Upper Fresh Air Makeup Vent Two slots and a stop are designed into the disc for air flow adjustments. The first slot allows for a 0 to 30% air flow and the second slot allows for a 30 to 100% air flow. To adjust the percentage of air flow, loosen the wing nut and rotate the disc until the desired percentage of air flow matches with the arrow. Tighten the wing nut.
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NOTE If controller configuration variable CNF48 is activated the condenser fan motor will activate if the HPS opens twice in less than seven minutes. Power cycling the unit resets the counter. 4.6 STARTING AND STOPPING INSTRUCTIONS 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. c.
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3. Pre-trip diagnosis may also be initiated via 4.8 PRE-TRIP DIAGNOSIS communications. The operation is the same as for the key pad initiation described below except that should a test fail, the pre-trip mode will automatically terminate. When initiated via communications, a test may not be interrupted with an arrow key, but the pre-trip mode can be terminated with the PRE-TRIP key. CAUTION Pre-trip inspection should not be performed with critical temperature cargoes in the container. a.
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will remain displayed for up to three minutes, during which time a user may select another test. If the three minute time period expires, the unit will terminate pre-trip and return to control mode operation. 2. While the tests are being executed, the user may terminate the pre-trip diagnostics by pressing and holding the PRE-TRIP key. The unit will then resume normal operation. If the user decides to terminate a test but remain at the test selection menu, the user may press the UP ARROW key.
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FALLING TEMPERATURE +2.5 C (4.5 F) RISING TEMPERATURE +1.5 C (2.7 F) MODULATING COOLING +1 C (1.8 F) AIR CIRCULATION +0.5 C (0.9 F) +.20 C SET POINT -0.20 C -0.5 C (0.9 F) MODULATING COOLING AIR CIRCULATION -1 C (1.8 F) HEATING -1.5 C (2.7 F) HEATING Figure 4-3 Controller Operation -- Perishable Mode FALLING TEMPERATURE RISING TEMPERATURE +1.5 C (2.7 F) COOLING +1 C (1.8 F) COOLING +0.5 C (0.9 F) +.20 C SET POINT -0.20 C -0.5 C (0.9 F) AIR CIRCULATION ONLY -1 C (1.
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from the supply air and multiplying the result by the time reading. The result is negative number. 4.10 SEQUENCE OF OPERATION General operation sequences for cooling, heating, and defrost are provided in the following subparagraphs. Schematic representation of controller action are provided in Figure 4-3 and Figure 4-4. Refer to Section 3 for detailed descriptions of special events and timers that are incorporated by the controller in specific modes of operation. e.
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Defrost may be requested by any one of the following methods: The manual defrost function (also manual defrost switch function if equipped) is initiated and ended by the user using the keypad or manual defrost switch (if equipped). 4.10.3 Sequence of Operation -- Frozen Mode Cooling NOTES 1. In the Frozen Mode of operation the evaporator motors run in low speed. NOTE The Manual Defrost / Interval key can be used to initiate a manual defrost.
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To operate the fans only, the MODE switch must be in the FANS ONLY position and the EMERGENCY BYPASS Switch must be in the ON position. The EBS module uses the system’s safety devices (high pressure switch, motor internal protectors, and heat termination thermostat) to protect the system while in Emergency Bypass Mode.
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4.12 ARCTIC MODE With arctic mode enabled, if the ambient is colder than -10.0 degrees C there is a 30 minute time delay at startup for any of the components in the system, except for the controller and the compressor crankcase heater (CCH), which should be active at this point. In arctic mode, the CCH is energized for 30 minutes to warm the oil in the compressor and boil off any liquid refrigerant that may be present in the crankcase.
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SECTION 5 TROUBLESHOOTING CONDITION POSSIBLE CAUSE REMEDY/ REFERENCE SECTION 5.
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CONDITION POSSIBLE CAUSE REMEDY/ REFERENCE SECTION 5.3 UNIT RUNS BUT HAS INSUFFICIENT COOLING Compressor Refrigeration System Compressor valves defective Abnormal pressures Controller malfunction Evaporator fan or motor defective Suction modulation valve malfunction Condenser Pressure Transducer defective Shortage of refrigerant 6.8 5.7 5.9 6.16 6.18 Check 6.7.1 5.
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CONDITION POSSIBLE CAUSE REMEDY/ REFERENCE SECTION 5.6 UNIT WILL NOT DEFROST PROPERLY --Continued Frequent defrost Wet load Normal 5.
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CONDITION POSSIBLE CAUSE REMEDY/ REFERENCE SECTION 5.10 NO EVAPORATOR AIR FLOW OR RESTRICTED AIR FLOW Evaporator coil blocked No or partial evaporator air flow Frost on coil Dirty coil Evaporator fan motor internal protector open Evaporator fan motor(s) defective Evaporator fan(s) loose or defective Evaporator fan contactor defective 5.6 6.15 6.16 6.16 6.16 Replace 5.
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SECTION 6 SERVICE NOTE To avoid damage to the earth’s ozone layer, use a refrigerant recovery system whenever removing refrigerant. When working with refrigerants, you must comply with all local government environmental laws. In the U.S., refer to EPA section 608. 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. A 6.
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4. Front seat both manifold gauge set valves and disconnect from cylinder. The gauge set is now ready for use. 1 3 2 4 1 To Low Side Service Port To High Side Service Port 13 2 3 Blue 5 7-BLUE 8-YELLOW 9-RED S D 3 - Red 11 6 12 4 6 Blue Knob 2 5 Red Knob 1. Discharge Service 7. Valve 8. 2. Compressor 9. 3. Suction Service Valve 10. 4. Receiver or Water Cooled Condenser 11. 5. Liquid Service Valve 12. 6. Vacuum Pump 13. 1. Manifold Gauge Set 2. Hose Fitting (0.5-16 Acme) 3.
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start-stop switch in the OFF position when the suction reaches a positive pressure of 0.1 kg/cm@ (1.0 psig). 6.6 EVACUATION AND DEHYDRATION 6.6.1 General c. Frontseat the suction service valve. The refrigerant will be trapped between the compressor suction service valve and the liquid line valve. Moisture is the deadly enemy of refrigeration systems. The presence of moisture in a refrigeration system can have many undesirable effects.
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2 4 3 6.7 REFRIGERANT CHARGE 5 6.7.1 Checking the Refrigerant Charge NOTE To avoid damage to the earth’s ozone layer, use a refrigerant recovery system whenever removing refrigerant. When working with refrigerants you must comply with all local government environmental laws. In the U.S., refer to EPA section 608. 6 1 S D a. Connect the gauge manifold to the compressor discharge and suction service valves. For units operating on a water cooled condenser, change over to air-cooled operation. b.
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e. Partially frontseat (turn clockwise) the suction service valve and slowly add charge until the refrigerant appears at the proper level. 1 2 3 16 6.8 COMPRESSOR 15 WARNING 14 Make sure power to the unit is OFF and power plug disconnected before replacing the compressor. 4 13 5 12 NOTES 11 10 1. The compressor should not operate in a vacuum greater than 500 mm/hg (20 inches/hg). 6 9 8 7 1. Discharge Valve Flange 2. High Side Pressure Connection 3. Low Side Pressure Connection 4.
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6.8.2 Compressor Disassembly 2 3 WARNING 1 Before disassembly of any external compressor component make sure to relieve possible internal pressure by loosening the bolts and tapping the component with a soft hammer to break the seal. 5 4 1. Oil Pressure Relief Valve 2. Oil Return Check Valve CAUTION Removing the compressor motor press-fit stator in the field is not recommended. The rotor and stator are a matched pair and should not be separated. Figure 6-8 Bottom Plate Removed b.
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h. Be very careful not to damage the motor windings when removing the motor end cover (see Figure 6-11), as the cover fits over the winding coils. Loosen the cap screws, break the seal, and then remove all cap screws except one in the top of the cover. While holding the cover in place, remove the remaining cap screw. Do not allow the cover to drop from its own weight. To prevent striking the winding, remove the cover horizontally and in line with the motor axis. Set screw must be removed. 1 6 5 4 1.
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1 2 1 3 2 3 1. Equalizer Tube and Lock Screw Assembly 2. Lockwasher 3. Counterweight Motor End 1. Suction Valve 2. Suction Valve Positioning Spring Figure 6-12 Equalizing Tube and Lock Screw Assembly 6 9 Figure 6-14 Suction Valve & Positioning Springs 5 7 3. Valve Plate Dowel Pin Suction valves are positioned by dowel pins (see Figure Figure 6-14). Do not omit the suction valve positioning springs.
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6.8.5 Installing the Components a. Push pistons from the inside of the crankcase through the cylinders, being careful not to break the rings. Place rods so that the chamfered side will be against radius of crankpins. Install the crankshaft and thrust washer through the pump end of the compressor. Ensure thrust washer is fitted on locating pin. Do not damage main bearings. Bring rods in position against crank bearings. b.
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6.9 HIGH PRESSURE SWITCH 6.10 CONDENSER COIL 6.9.1 Replacing High Pressure Switch The condenser consists of a series of parallel copper tubes expanded into copper fins. The condenser coil must be cleaned with fresh water or steam so the air flow is not restricted. To replace the coil, do the following: a. Turn unit start-stop switch OFF. Frontseat both suction and discharge service valves to isolate compressor. Remove the refrigerant from the compressor. b. Disconnect wiring from defective switch.
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6.12 WATER-COOLED CONDENSER CLEANING The water-cooled condenser is of the shell and coil type with water circulating through the cupro-nickel coil. The refrigerant vapor is admitted to the shell side and is condensed on the outer surface of the coil. Rust, scale, and slime on the water-cooling surfaces inside of the coil interfere with the transfer of heat, reduce system capacity, cause higher head pressures and increase the load on the system.
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6. Allow the Oakite No. 32 solution to soak in the tube coils for several hours, periodically pump-circulating it with an acid-proof pump. NOTE If the condenser cooling water is not being used as drinking water or is not re-circulated in a closed or tower system, neutralizing is not necessary. An alternate method may be used whereby a pail (see Figure 6-18) filled with the solution and attached to the coils by a hose can serve the same purpose by filling and draining.
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1 the evaporator outlet test pressures at the suction modulation valve. g. Subtract the saturation temperatures determined in step f from the temperatures measured in step e. The difference is the superheat of the suction gas. Determine the average superheat It should be 4.5 to 6.7 C (8 to 12 F). 3 2 6.14.2 Expansion Valve Replacement a. Removing the Expansion Valve NOTES 5 1. The TXV is a hermetic valve and does not have adjustable superheat (See Figure 6-20). 4 1. Suction Line 2. Thumbscrew 3.
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1. Pump down the unit per paragraph 6.4. 6.15 EVAPORATOR COIL AND HEATER ASSEMBLY 2. If TXV replacement is to be performed from the front of the unit, open the upper right (EFM#1) access panel (see Figure 2-1) and remove the evaporator fan motor. The evaporator section, including the coil, should be cleaned regularly. The preferred cleaning fluid is fresh water or steam. Another recommended cleaner is Oakite 202 or similar, following manufacturer’s instructions.
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6.16 EVAPORATOR FAN AND MOTOR ASSEMBLY If fan spins backward, then motor wiring or motor is defective. The evaporator fans circulate air throughout the container by pulling air in the top of the unit. The air is forced through the evaporator coil where it is either heated or cooled and then discharged out the bottom of the refrigeration unit into the container. The fan motor bearings are factory lubricated and do not require additional grease. f. Replace access panel making sure that panel does not leak.
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6.17.2 Removing the Capacitor WARNING Make sure power to the unit is OFF and power plug disconnected before servicing capacitor(s). 2-1/8 inch Nut WARNING Figure 6-24 Suction Modulation Valve (SMV) 6.18.1 Pre-check Procedure With power OFF discharge the capacitor before disconnecting the circuit wiring. a. Check unit for abnormal operation. b. Check charge. If refrigerant is low repair as required and again check operation. Capacitors must be discharged properly before testing.
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i. Perishable operation: If the operation of the unit is in question, place the set point to approximately 6 C (11 F) less than the current box temperature, so the unit goes into pulldown. Run the unit for approximately one minute. Record readings on gauges and current draw. The current draw and pressures should go up. Place set point 0.5 degrees C (0.9 degrees F) above current box temperature to fully modulate valve, and run for approximately one minute. NOTE The unit may shut off for a short time.
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b. Install another high pressure gauge at the liquid line service valve. 6.21 CONTROLLER 6.21.1 Handling Controller c. Run unit with -18 C (0 F) set point. CAUTION d. After five minutes, read both gauges and subtract the liquid line pressure from the discharge pressure. This is the actual differential pressure. Do not remove wire harnesses from controller unless you are grounded to the unit frame with a static safe wrist strap. e.
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e. The strap should be worn during any service work on the controller, even when it is placed on the mat. 2. Insert software/programming PCMCIA card containing the following (example) files into the programming/software port (see Figure 6-26): 6.21.2 Controller Troubleshooting menuDDMM.ml3 -- This file allows the user to select a file/program to upload into the controller.
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6. The display module will go blank briefly and then display “541 00.” Based on the operational software installed. 7. Press the UP or DOWN ARROW key to scroll through the list to obtain the proper model dash number. (If a defective card is being used, the display will blink the message “bAd CArd.” Turn start-stop switch OFF and remove the card.) 8. Press the ENTER key on the keypad. 9. When the software loading has successfully completed, the display will show the message “EEPrM donE.
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Sensor j. Slide heat shrink tubing over splice so that ends of tubing cover both ends of crimp as shown in Figure 6-28. 40 mm (1 1/2 inch) k. Heat tubing to shrink over splice. Make sure all seams are sealed tightly against the wiring to prevent moisture seepage. 6.3 mm (1/4 inch) l. Slide large heat shrink tubing over both splices and shrink. Mounting Stud Type 40 mm (1-1/2 inches) 6.3 mm (1/4 inch) CAUTION Do not allow moisture to enter wire splice area as this may affect the sensor resistance.
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Sensor Wires Upon installation, a new VPS assembly requires calibration as follows: 1. Rotate the vent to the 0 CMH/ CFM position. Cap and Grommet Assembly 2. Code select 45 will automatically be displayed. Press the Enter key and hold for five seconds. Evaporator Back Panel 3. After the enter key has been pressed, the display will read CAL (for calibration). Probe Holder 4. Press the ALT MODE key and hold for five seconds. 5.
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c. Locate the connector below the recorder, and squeeze the ears together to disconnect the plug (item 6). d. Remove the four mounting screws (item 8) and remove the recorder. e. Install the new recorder by reversing the above steps. 6.24.2Changing the Chart 6.24 ELECTRONIC PARTLOW TEMPERATURE RECORDER The microprocessor based temperature recorder is designed to interface with the DataCORDER to log temperature with time.
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3 2 1 4 5 10 9 8 7 6 1. 2. 3. 4. 5. Recorder Door Change Chart Button Recorder Box Pen Tip Stylus Arm 6. 7. 8. 9. 10. Connector Calibration Button (Located underneath) Mounting Screws, #10-24 x 7/16 inches long Hold Down Tab Chart Retaining Nut Figure 6-31 Electronic Partlow Temperature Recorder 6.24.3Adjusting the Recorder Stylus 6.24.4Rezeroing the Recording Thermometer Proper stylus force upon the chart paper is important. Factory adjustment is 113 to 127 grams (4 to 4.5 ounces).
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b. Cut the fiberglass cloth to allow a 25mm (1 inch) overlap around the area to be repaired. c. Stretch and position the cloth over the area to be repaired and secure it with masking tape. d. Make up sufficient epoxy glue to cover the cloth by mixing equal parts of resin and hardener. Saturate the cloth with the epoxy glue, spreading evenly. e. Remove the tape and overlap the edge of the cloth approximately 6 to 12 mm (1/4” to 1/2”) with glue. f. Epoxy will dry in 45-60 minutes.
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c. Mix the two component epoxy and fill the hole halfway to the top with epoxy. d. Press the insert in until it is flush with the surface. e. Wipe away any excess epoxy. The part is ready for service after the bond material has hardened and is tack free (approximately 20 minutes). 6.26.5 Door Hinge Inserts If the door hinges have been pulled from the control box, drill and reinstall the hinge as shown in Figure 6-32 and described in the following steps: Materials needed: 1.
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Figure 6-33 Insert Location 6--27 T--318 07 03 03 04 05 06 INSERT PART NUMBERS 34-06231-## WHERE THE ## IS AS INDICATED 05 07 01 03 03 03 04 03
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6.27 COMMUNICATIONS INTERFACE MODULE INSTALLATION 6.28 POWER FACTOR CORRECTOR CAPACITORS (PFC) The power factor corrector capacitors are of the permanent-split capacitor type. There are a total of three capacitors with discharge resistors enclosed in a single case. a. When to check for a defective capacitor The capacitors assist in correcting current draw by the compressor. If one or more of the capacitors is faulty, there will be an imbalance in current.
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If the capacitor has failed open, the ohmmeter needle will not move when the meter probes touch the terminals. If the capacitor is shorted, the needle will swing to zero resistance position and stay there. Table 6-5 Recommended Bolt Torque Values TORQUE BOLT DIA. THREADS FREE SPINNING #4 40 5.2 in-lbs #6 32 9.6 in-lbs #8 32 20 in-lbs #10 24 23 in-lbs 1/4 20 75 in-lbs 5/16 18 11 ft-lbs 3/8 16 20 ft-lbs 7/16 14 31 ft-lbs 1/2 13 43 ft-lbs 9/16 12 57 ft-lbs 5/8 11 92 ft-lbs 3/4 10 124 ft-lbs 2.
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Table 6-7 Compressor Torque Values TORQUE RANGE SIZE DIAMETER (inches) 1/16 1/8 1/4 1/4 THREADS PER INCH 27 (pipe) 20 (pipe) 20 (pipe) 20 1/4 28 5/16 18 3/8 16 7/16 5/8 5/8 #10 1-1/2 14 11 18 32 18 NEF USAGE ft-lb N.
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Table 6-8 R-134a Temperature - Pressure Chart Temperature Vacuum F C “/hg -40 -40 14.6 49.4 .35 .37 12.3 -30 -34 -25 Pressure bar F C psig kPa kg/cm@ bar 37.08 0.49 28 -2 24.5 168.9 1.72 1.69 41.6 31.25 0.42 30 -1 26.1 180.0 1.84 1.80 9.7 32.8 24.64 0.33 32 0 27.8 191.7 1.95 1.92 -32 6.7 22.7 17.00 0.23 34 1 29.6 204.1 2.08 2.04 -20 -29 3.5 11.9 8.89 0.12 36 2 31.3 215.8 2.20 2.16 -18 -28 2.1 7.1 5.33 0.07 38 3 33.2 228.9 2.
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Note: Curves to be used as troubleshooting guide only for model series 69NT40 with fresh air makeup vent closed, unit powered on 460 VAC/60Hz and SMV 100% open. (Bar) psig (22.0) 320 (20.7) 300 (19.3) 280 (17.9) 260 35 F (1.7 C) Box (16.6) 240 (15.2) 220 (13.8) 200 (12.4) 180 (11.0) 160 (9.7) 140 (8.3) 120 (6.9) 100 (5.5) 80 60 (15.6) 70 (21.1) 80 (26.7) 90 (32.2) 100 (37.8) 110 (43.3) 120 ( Degrees F) ( Degrees C) Ambient Air Temperature (Bar) psig (22.0) 320 (20.7) 300 (19.3) 280 (17.
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(Bar) (.97) psig 14 (.83) 12 (.69) 10 (.55) 8 (.41) 6 (.28) 4 (.14) 2 (0) 0 (-.14) --2 (-.28) --4 (-.41) --6 60 (15.6) 35 F (1.7 C) Box 0 F (-17.8 C) Box 70 (21.1) 80 (26.7) 90 (32.2) 100 (37.8) 110 (43.3) 120 (Degrees F) (48.9) (Degrees C) Ambient Air Temperature Compressor Suction Pressure Versus Ambient Air Temperature at Stable Box Temperature 17 16 15 35 F (1.7 C) Box 14 13 12 11 0 F (-17.8 C) Box 10 9 8 60 (15.6) 70 80 90 100 (21.1) (26.7) (32.2) (37.
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SECTION 7 ELECTRICAL WIRING SCHEMATIC 7.1 INTRODUCTION This section contains the Electrical Schematics and Wiring Diagrams. The diagrams are presented as follows: Figure 7-1 provides the legend for use with all figures. Figure 7-2 provides the schematic diagram for units with normal evaporator fan operation capability. Figure 7-3 provides the schematic diagram for units with single evaporator fan operation capability.
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LEGEND SYMBOL DESCRIPTION (Normal Schematic Location) (Single Evap. Fan Schematic Location) SYMBOL DESCRIPTION (Normal Schematic Location) (Single Evap.
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FCCH FCCH 6 Heater Figure 7-2 SCHEMATIC DIAGRAM -- Units with Normal Evaporator Fan Capability 7--3 T-318
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FCCH FCCH Figure 7-3 SCHEMATIC DIAGRAM -- Units with Single Evaporator Fan Capability T--318 7--4
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ST SEE FIGURE 7--2 or 7--3 TR SEE FIGURE 7--2 or 7--3 TO KB7 TransFRESH Controller Lower Air Exchange VPS Upper Air Exchange VPS Figure 7-4 SCHEMATIC DIAGRAM -- TransFRESH and Vent Position Sensors (VPS) 7--5 T-318
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To ST10 To TRX2 To QC1 To QC1 To MC6 To QC1 CONTROLLER Figure 7-5 SCHEMATIC DIAGRAM -- Emergency Bypass T--318 7--6
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NOTE: STANDARD CONTROLLER JUMPERS: MA3 TO MA7 AND MA9 TO MA11 (SEE Figure 7-2 ) ARE REMOVED IN THIS APPLICATION CR5 CR4 CR3 CR6 CR8 CR2 NOTE: STANDARD CONTROLLER JUMPERS: MA3 TO MA7 AND MA9 TO MA11 (SEE Figure 7-2) ARE REMOVED IN THIS APPLICATION Figure 7-6 SCHEMATIC DIAGRAM, WIRING DIAGRAM -- Electronic Partlow Recorder 7--7 T-318
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UPPER VPS KB7 [DF11] CFL1 CFL3 TRC2 TRC1 31 11 12 CH11 [CFS--2] CH31 FCCH FCCH 32 WIRES TO TR X2: DF--(TFC), P--(TFC), BMA2,CIB1, GRD, CHA2, RMA, KA12, EFA2, HRA2 & CR8 ECG1 [EB8] FCCH FCCH LOWER VPS (ICF MAY BE IN CONTROL BOX) Figure 7-7 UNIT WIRING DIAGRAM -- Units with Normal Evaporator Fan Capability (Sheet 1 of 2) T--318 7--8
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[UVPS1] [UVPS2] SMVD [BM2B] SMVC [BM1B] SMVB [BM2A] SMVA [BM1A] KA1 NOTE: RM MAY BE OUTSIDE BOX KB7 [HPRB] RMB CFS UVPS3 KA6 TFC1 [RMC] CFA1 RMD KB7 NOTE: WHEN EB, ED, BM OR CFS IS/ARE INSTALLED, WIRE DESTINATIONS CHANGE FROM THE STANDARD. ADDRESSES FOR THE CHANGED DESTINATIONS ARE SHOWN IN BRACKETS “[XXX]”.
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UPPER VPS KB7 [DF11] CFL3 CFL1 TRC2 TRC1 31 11 12 FCCH CH11 CH31 FCCH 32 WIRES TO TR X2: DF--(TFC), P--(TFC), BMA2,CIB1, GRD, CHA2, RMA, KA12, EFA2, HRA2 & CR8 ECG1 [EB8] FCCH FCCH (ICF MAY BE IN CONTROL BOX) LOWER VPS Figure 7-8 UNIT WIRING DIAGRAM -- Units with Single Evaporator Fan Capability (Sheet 1 of 2) T--318 7--10
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[UVPS1] [UVPS2] KA1 NOTE: RM MAY BE OUTSIDE BOX KB7 [HPRB] SMVD [BM2B] SMVC [BM1B] SMVB [BM2A] SMVA [BM1A] RMB CFS KA6 CFA1 TFC1 [RMC] RMD KB7 Figure 7-8 UNIT WIRING DIAGRAM -- Units with Single Evaporator Fan Capability (Sheet 2 of 2) 7--11 T-318
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INDEX A Air Cooled Condenser Section, 2--4 Alarm, 3--6, 3--9, 3--12, 3--18, 3--27 Arctic Mode, 3--4 Evacuation, 6--3 Evaporator, 6--14 Evaporator Fan, 1--2, 3--4, 6--15 Evaporator Section, 2--2 Expansion Valve, 6--12 B Bulb Mode, 3--5 F Failure Action, 3--4 Filter--Drier, 6--12 C Capacitors, 6--15 Checking Superheat, 6--13 Communications Interface Module, 3--11, 6--28 Composite Control Box, 6--25 Fresh Air Makeup, 2--1, 4--1 Frozen Mode, 4--8 Frozen Mode -- Conventional, 3--6 Frozen Mode -- Economy, 3
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INDEX -- Continued M S Manifold Gauge Set, 6--1 Safety and Protective Devices, 2--9 Microporcessor System, 3--1 Sensor Configuration, 3--8 Modes of Operation, 3--4 Sequence of Operation, 4--7 Motor Current, 6--32 Service Valves, 6--1 O Oil Level, 6--9 Starting, 4--3 Stopping, 4--3 Suction Modulating Valve, 6--16 Operational Software, 3--3, 3--8 P T Temperature Control, 3--4, 3--6 Painted Surfaces, 6--25 Temperature Recorder, 4--3, 6--23 Perishable Mode, 4--7 Temperature Sensor, 6--20 Per
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Carrier Transicold Division, Carrier Corporation Container Products Group P.O. Box 4805 Syracuse, N.Y. 13221 U.S A www.carrier.transicold.com A member of the United Technologies Corporation family. Stock symbol UTX ©2007 Carrier Corporation D Printed in U. S. A.