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Carrier 69NT40-541-306 Operation And Service

Upflow container refrigeration units
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Container Refrigeration
OPERATIONS AND SERVICE
For
69NT40-541-306, 314 & 328
Upflow Container Refrigeration Units
T-354 Rev A

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Summary of Contents for Carrier 69NT40-541-306

  • Page 1 Container Refrigeration OPERATIONS AND SERVICE 69NT40-541-306, 314 & 328 Upflow Container Refrigeration Units T-354 Rev A...
  • Page 3 OPERATIONS AND SERVICE 69NT40-541-306, 314 & 328 Upflow Container Refrigeration Units © Carrier Corporation, 2017 Printed in U. S. A. May 2017...
  • Page 5 TABLE OF CONTENTS Paragraph Number Page SAFETY SUMMARY ..............1–1 GENERAL SAFETY NOTICES .

  • Page 6: Table Of Contents

    DESCRIPTION ............... . 3–1 GENERAL DESCRIPTION .
  • Page 7 DATACORDER ............. 4–10 4.6.1 Description .
  • Page 8 TROUBLESHOOTING ..............6–1 UNIT WILL NOT START OR STARTS THEN STOPS .
  • Page 9 7.16 EVAPORATOR FAN AND MOTOR ASSEMBLY ........7–24 7.17 EVAPORATOR FAN MOTOR CAPACITORS...
  • Page 11 LIST OF ILLUSTRATIONS FIGURE NUMBER Page Figure 3.1 Refrigeration Unit -- Front Section ..........3–1 Figure 3.2 Evaporator Section - UPFLOW Units With Center Access Panel .
  • Page 12 Figure 7.21 Hermetic Thermostatic Expansion Valve Brazing Procedure ......7–22 Figure 7.22 Thermostatic Expansion Valve Bulb Location .
  • Page 13 LIST OF TABLES TABLE NUMBER Page Table 3–1 Refrigeration System Data ............3–7 Table 3–2 Electrical Data .
  • Page 15 In case of severe vibration or unusual noise, stop the unit and investigate. MAINTENANCE PRECAUTIONS The Carrier NaturaLINE unit requires the same training and certifications that are required for servicing a conven- tional refrigeration unit and it is expected that maintenance will only be performed by qualified personnel.
  • Page 16 CAUTION CAUTION - means to warn against potential hazard or unsafe practice that could result in per- sonal injury, product or property damage. NOTE NOTE – gives helpful information that may help and avoid equipment and 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.
  • Page 17 WARNING Do not open the condenser fan grille before turning power OFF and disconnecting power plug. 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 con- tact occurs.
  • Page 18 CAUTION Do not remove wire harnesses from controller unless you are grounded to the unit frame with a static safe wrist strap. CAUTION Unplug all controller wire harness connectors before performing arc welding on any part of the container. CAUTION Pre-trip inspection should not be per- formed with critical temperature cargoes in the container.
  • Page 19 7.9.) CAUTION Use only Carrier Transicold approved Polyol Ester Oil (POE) - Castrol-Icematic SW20 compres- sor oil with R-134a. Buy in quantities of one quart or smaller. When using this hygroscopic oil, immediately reseal. Do not leave container of oil open or contamination will occur.
  • Page 20 CAUTION The unit must be OFF whenever a program- ming card is inserted or removed from the control- ler programming port. CAUTION Do not allow moisture to enter wire splice area as this may affect the sensor resistance. CAUTION Do not allow the recorder stylus to snap back down. The stylus arm base is spring-loaded, and damage may occur to the chart or the stylus force may be altered.
  • Page 21 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.
  • Page 22 2.3.8 Interrogator Units that use the DataCORDER function are fitted with interrogator receptacles for connection of equipment to download the recorded data. Two receptacles may be fitted; one accessible from the front of the container and the other mounted inside the container (with the USDA receptacles). 2.3.9 Remote Monitoring The unit may be fitted with a remote monitoring receptacle.
  • Page 23 2.3.20 460 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. 2.3.21 230 Volt Cable Units equipped with an autotransformer require an additional power cable for connection to the 230 volt source. Vari- ous power cable and plug designs are available.
  • Page 24 NOTE Repaired controllers are NOT to be used for warranty repairs. Only full OEM re-manufactured control- lers 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.

  • Page 25: Description

    SECTION 3 DESCRIPTION GENERAL DESCRIPTION 3.1.1 Refrigeration Unit - Front Section The unit is designed so that the majority of the components are accessible from the front (see Figure 3.1). The unit model number, serial number, and parts identification number can be found on the serial plate to the left of the compressor.

  • Page 26: Evaporator Section

    3.1.3 Evaporator Section The evaporator section (Figure 3.2) contains the supply temperature sensor, humidity sensor, thermostatic expan- sion valve, dual-speed evaporator fans (EM1 and EM2), evaporator coil and heaters, defrost temperature sensor, heat termination thermostat, and heat exchanger. The evaporator fans circulate air through the container by pulling it from the bottom of the unit, directing it through the evaporator coil where it is heated or cooled, and discharging it at the top.

  • Page 27: Compressor Section

    3.1.4 Compressor Section The reciprocating compressor section (Figure 3.3) includes the compressor (with high pressure switch), power cable storage compartment, and autotransformer. This section also contains the suction modulating valve, discharge pressure regulating valve, discharge tempera- ture sensor, and discharge/suction pressure transducers. The return temperature sensor, return recorder sensor, and ambient sensor are located at the right side of the com- pressor.

  • Page 28: Air-Cooled Condenser Section

    3.1.5 Air-cooled Condenser Section The air-cooled condenser section (Figure 3.4) consists of the condenser fan, condenser coil, receiver with sight glass/moisture indicator, quench valve, manual liquid 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 con- denser fan grille.

  • Page 29: Water-Cooled Condenser Section

    3.1.6 Water-cooled Condenser Section The water-cooled condenser section (Figure 3.5) consists of a water-cooled condenser, sight glass, 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. Figure 3.5 Water-cooled Condenser Section 1.

  • Page 30: Control Box Section

    3.1.7 Control Box Section The control box (Figure 3.6) 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. 3.1.8 Communications Interface Module The communications interface module is a slave module, which allows communication with a master central moni- toring station.

  • Page 31: Refrigeration System Data

    REFRIGERATION SYSTEM DATA Table 3–1 Refrigeration System Data Number of Cylinders Model 06DR Weight (Dry) 118 kg (260 lb) a. Compressor/Motor Approved Oil Castrol Icematic Assembly Oil Charge degrees 3.6 liters (7.6 U.S. pints) The oil level range, with the compressor off, Oil Sight Glass should be between the bottom and one- eighth level of the sight glass.

  • Page 32: Electrical Data

    ELECTRICAL DATA Table 3–2 Electrical Data CB-1 Trips at 29 amps a. Circuit Breaker CB-2 (50 amp) Trips at 62.5 amps CB-2 (70 amp) Trips at 87.5 amps b. Compressor 17.6 amps @ 460 VAC Full Load Amps (FLA) Motor (with current limiting set at 21 amps) 380 VAC, Single Phase, 460 VAC, Single Phase,...

  • Page 33: Safety And Protective Devices

    Table 3–2 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: 0.99 V 1.65 V 2.31 V 2.97 V i.

  • Page 34: Refrigeration Circuit

    REFRIGERATION CIRCUIT Starting at the compressor (see Figure 3.7, 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 ambi- ent operation, the discharge pressure regulating valve modulates the flow of refrigerant to maintain a pre -set mini- mum discharge pressure.

  • Page 35: Figure 3.7 Refrigeration Circuit Schematic

    Figure 3.7 Refrigeration Circuit Schematic EVAPORATOR THERMOSTATIC EXPANSION VALVE (TXV) TXV BULB CONDENSER HEAT EXCHANGER DISCHARGE PRESSURE REGULATING VALVE QUENCH VALVE BULB SERVICE VALVE MODULATING FUSIBLE PLUG QUENCH VALVE VALVE SIGHT GLASS FILTER DRIER PRESSURE TRANSDUCER Suction SIGHT GLASS / SERVICE MOISTURE INDICATOR Liquid...

  • Page 36: Arctic Option

    ARCTIC OPTION The arctic option (Figure 3.8) consists of the crankcase heater (CCH) installed onto the compressor, which warms the refrigerant oil and evaporates any liquid refrigerant which may have migrated to the compressor crankcase. Figure 3.8 Arctic Option Compressor Crankcase Heater (CCH) T-354 3–12...

  • Page 37: Temperature Control Microprocessor System

    SECTION 4 MICROPROCESSOR TEMPERATURE CONTROL MICROPROCESSOR SYSTEM The temperature control Micro-Link 3 microprocessor system (see Figure 4.1) consists of a keypad, display mod- ule, control module (controller), and interconnecting wiring. The controller houses the temperature control software and the DataCORDER Software. The temperature control software functions to operate the unit components as required to provide the desired cargo temperature and humidity.

  • Page 38: Key Pad

    4.1.1 Key Pad The keypad (Figure 4.2) is mounted on the right-hand side of the control box. The keypad consists of 11 push but- ton switches that act as the user's interface with the controller. Descriptions of the switch functions are provided in Table 4–1.

  • Page 39: Display Module

    4.1.2 Display Module The display module (Figure 4.3) consists of two five digit displays and seven indicator lights. The indicator lights include: 1. COOL - White or Blue LED: Energized when the refrigerant compressor is energized. 2. HEAT - Orange LED: Energized to indicate heater operation in heat mode, defrost mode, or dehumidification. 3.

  • Page 40: Controller Software

    The Micro-Link 3 controller is a dual module microprocessor as shown in Figure 4.4. It is fitted with test points, har- ness connectors and a software card programming port. Figure 4.4 Control Module EN12830 CONTROLLER With CARRIER Micro-Link3 DataCORDER S/N: 0491162 REV 5147 YYWW: 1035 12-00579-00 T B C1 59980 1.

  • Page 41: Modes Of Operation

    To access the function codes, perform the following: a. Press the CODE SELECT key, then press an arrow key until the left window displays the desired code number. b. The right window will display the value of this item for five seconds before returning to the normal display mode.

  • Page 42: Condenser Pressure Control

    4.3.6 Condenser Pressure Control When configuration variable CnF14 is set to “In”, the condenser pressure control logic is activated to maintain dis- charge pressures above 130 psig in low temperature ambients. The logic turns the condenser fan on or off in accordance with the condenser pressure transducer reading (refer to Table 4–4) The function is enabled when the...

  • Page 43: Perishable Mode - Dehumidification

    4.3.10 Perishable Mode - Dehumidification The dehumidification mode is provided to reduce the humidity levels inside the container. The mode is activated when a humidity value is set at function code Cd33. The display module SUPPLY LED will flash ON and OFF every second to indicate that the dehumidification mode is active.

  • Page 44: Temperature Control - Frozen Mode

    Bulb mode is terminated when: 1. Bulb mode code Cd35 is set to “Nor”. 2. Dehumidification code Cd33 is set to "Off". 3. The user changes the set point to one that is in the frozen range. When bulb mode is disabled by any of the above, the evaporator fan operation for dehumidification reverts to "alt" and the DTS termination setting resets to the value determined by controller configuration variable CnF41.

  • Page 45: Unit Pre-Trip Diagnostics

    Some alarms requiring compressor shutdown have time delays before and after to try to keep the compressor on line. An example is alarm code “LO”, (low main voltage), when a voltage drop of over 25% occurs, an indication is given on the display, but the unit will continue to run. An alarm is indicated by flashing an alarm code on the display panel, and for some alarms, by the alarm light illuminating.
  • Page 46 4.1), which may be used with the Carrier Transicold Data Reader to download data. A personal computer with Carrier Transicold Data View software may also be used to download data and configure settings. The resulting file uses a proprietary file format that protects it from potential tampering or altering of data.
  • Page 47 A list of the data points available for recording follows. Changing the configuration to generic and selecting which data points to record may be done using the Carrier Transicold Data Retrieval Program.

  • Page 48: Table 4-2 Datacorder Configuration Variables

    Table 4–2 DataCORDER Configuration Variables CONFIGURATION NO. TITLE DEFAULT OPTION dCF01 (Future Use) dCF02 Sensor Configuration 2,5,6,9,54,64,94 dCF03 Logging Interval (Minutes) 15,30,60,120 dCF04 Thermistor Format Short Low, Normal dCF05 Thermistor Sampling Type A,b,C dCF06 Controlled Atmosphere/Humidity Sampling Type dCF07 Alarm Configuration USDA Sensor 1 Auto, On, Off dCF08 Alarm Configuration USDA Sensor 2...
  • Page 49 4.6.6 Sampling Type (dCF05 & dCF06) Three types of data sampling are available -average, snapshot, and USDA. When configured to average, the aver- age of readings taken every minute over the recording period is recorded. When configured to snapshot, the sen- sor reading at the log interval time is recorded.

  • Page 50: Figure 4.5 Standard Configuration Report

    Figure 4.5 Standard Configuration Report 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:...
  • Page 51 2. PC communication port(s) unavailable or mis-assigned. 3. Chart Recorder Fuse (FCR) blown. Communication identification for the models covered herein may be obtained on the Container Products Group Information Center by authorized Carrier Transicold Service Centers. A. DataReader Figure 4.6 Data Reader...
  • Page 52 In response to the demand to replace fumigation with this environmentally sound process, Carrier has integrated Cold Treatment capability into its microprocessor system. These units have the ability to maintain supply air temperature within one-quarter degree Celsius of setpoint and record minute changes in product temperature within the Data- CORDER memory, thus meeting USDA criteria.

  • Page 53: Table 4-4 Controller Configuration Variables

    4.6.13 DataCORDER Alarms Alarm display is an independent DataCORDER function. If an operating parameter is outside of the expected range or a component does not return the correct signals back to the DataCORDER an alarm is generated. The DataCORDER contains a buffer of up to eight alarms. A listing of the DataCORDER alarms is provided in Table 4–...
  • Page 54 Table 4–4 Controller Configuration Variables (Continued) CONFIGURATION TITLE DEFAULT OPTION NUMBER CnF16 DataCORDER Present On (Yes) OFF (No) CnF17 Discharge Pressure Sensor Out (No) In (Yes) CnF18 Heater Old (Low Watt) nEW (High Watt) CnF19 Controlled Atmosphere Out (No) In (Yes) CnF20 Suction Pressure Sensor Out (No)

  • Page 55: Table 4-5 Controller Function Codes

    Table 4–5 Controller Function Codes CODE TITLE DESCRIPTION NOTE Note: If the function is not applicable, the display will read "-----" Display Only Functions Displays the SMV percent open. The right display reads 100% when the valve Suction Modulation Cd01 is fully open and 0% when the valve is fully closed.
  • Page 56 Table 4–5 Controller Function Codes (Continued) CODE TITLE DESCRIPTION This code checks the Controller/DataCORDER battery pack. While the test is running, "btest" will flash on the right display, followed by the result. "PASS" will be displayed for battery voltages greater than 7.0 volts. "FAIL" will be displayed Cd19 Battery Check for battery voltages between 4.5 and 7.0 volts, and "-----"...
  • Page 57 Table 4–5 Controller Function Codes (Continued) CODE TITLE DESCRIPTION This code determines the temperature units (C or F) which will be used for all temperature displays. The user selects C or F by selecting function code Temperature Units Cd28 and pushing the ENTER key. The factory default value is Celsius units. Cd28 (Degrees C or Degrees F)
  • Page 58 Table 4–5 Controller Function Codes (Continued) CODE TITLE DESCRIPTION Bulb mode is a user selectable mode of operation that is an extension of dehu midification control (Cd33). If dehumidification is set to "Off," code Cd35 will dis play "Nor" and the user will be unable to change it. Cd35 Bulb Mode After a dehumidification set point has been selected and entered for code Cd33,...

  • Page 59: Table 4-6 Controller Alarm Indications

    Table 4–5 Controller Function Codes (Continued) CODE TITLE DESCRIPTION Code Cd45 will display whenever the control detects movement via the sensor Vent Position unless alarm 50 is active. The code will display for 30 seconds, then time out Cd45 Sensor (VPS) and return to the normal display mode.
  • Page 60 Table 4–6 Controller Alarm Indications (Continued) CODE TITLE DESCRIPTION Alarm 22 responds to the evaporator motor internal protectors. On units with Nor- mal Evaporator Fan Operation (CnF32 set to 2EFO) the alarm is triggered by Evaporator Fan opening of either internal protector. It will disable all control units until the motor AL22 Motor Safety protector resets.
  • Page 61 Table 4–6 Controller Alarm Indications (Continued) CODE 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 second- Primary Supply ary supply sensor will be used for control if the unit is so equipped.
  • Page 62 Table 4–6 Controller Alarm Indications (Continued) CODE TITLE DESCRIPTION Alarm 65 is triggered by a compressor discharge transducer reading outside the Discharge Pressure AL65 valid range of 73.20cm Hg (30in Hg) to 32.34Kg/cm (460psig). This is a display Transducer Failure alarm and has no associated failure action.

  • Page 63: Table 4-7 Controller Pre-Trip Test Codes

    Table 4–7 Controller Pre-Trip Test Codes CODE TITLE DESCRIPTION NOTE "Auto" or “Auto1” menu includes: P, P1, P2, P3, P4, P5, P6 & rSLts. “Auto2” menu includes P, P1, P2, P3, P4, P5, P6, P7, P8, P9, P10 & rSLts.”Auto3 menu includes P, P1, P2, P3, P4, P5, P6, P7, P8 & rSLts All lights and display segments will be energized for five seconds at the start of Pre-Trip Initiated the pre-trip.
  • Page 64 Table 4–7 Controller Pre-Trip Test Codes (Continued) CODE TITLE DESCRIPTION Setup: The High Speed Evaporator Fan is turned on and run for eight minutes, with all other outputs de-energized. Pass/Fail Criteria: A temperature comparison is made between the return and supply probes.
  • Page 65 Table 4–7 Controller Pre-Trip Test Codes (Continued) CODE TITLE DESCRIPTION Setup: The compressor and fans continue to run from the previous test. The quench valve (if configured) will operate as in normal control mode. The SMV is closed to 0% open, current and condenser pressure readings are taken. The SMV is opened to 50% with continuous current and condenser pressure read- Suction Modulation ings taken to establish maximum values.
  • Page 66 Table 4–7 Controller Pre-Trip Test Codes (Continued) CODE TITLE DESCRIPTION Requirement: Test P7-0 must pass for this test to execute. Setup: The con denser fan is started and a 60 second timer is started. High Pressure P7-1 Switch Open Pass/Fail Criteria: Passes the test if the high pressure switch (HPS) closes within the 60-second time limit, otherwise, it fails.
  • Page 67 Table 4–7 Controller Pre-Trip Test Codes (Continued) CODE TITLE DESCRIPTION Setup: When the container temperature is greater than or equal to the 7.2C (45F) set point which was set in the Frozen Mode Setup Test, the left display will read "P10-1" and the right display will show the return air temperature. The set Frozen Mode P10-1 point will then be changed to -17.7C (0F).

  • Page 68: Table 4-8 Datacorder Pre-Trip Records

    Table 4–8 DataCORDER Pre-Trip Records NOTE Inapplicable Functions Display "-----" To Access: Press ALT. MODE key CODE TITLE DESCRIPTION Recorder Supply Current reading of the supply recorder sensor. Temperature Recorder Return Current reading of the return recorder sensor. Temperature USDA 1,2,3 dC3-5 Current readings of the three USDA probes.

  • Page 69: Table 4-9 Datacorder Pre-Trip Result Records

    Table 4–9 DataCORDER Pre-Trip Result Records TEST TITLE DATA Heater On Pass/Fail/Skip Result, Change in current for Phase A, B and C Heater Off Pass/Fail/Skip Result, Change in currents for Phase A, B and C Pass/Fail/Skip Result, Water pressure switch (WPS) - Open/Closed, Condenser Fan On Change in currents for Phase A, B and C Condenser Fan Off...

  • Page 70: Table 4-10 Datacorder Alarm Indications

    Table 4–10 DataCORDER Alarm Indications To Access: Press ALT. MODE key CODE TITLE DESCRIPTION The supply recorder sensor reading is outside of the range of -50 to 70C (-58F to +158F) or, the probe check logic has determined there is a fault with this sensor. Recorder Supply dAL70 Temperature Out of Range...
  • Page 71 SECTION 5 OPERATION INSPECTION (BEFORE STARTING) WARNING Beware of unannounced starting of the evaporator and condenser fans. The unit may cycle the fans and compressor unexpectedly as control requirements dictate. a. If container is empty, check inside for the following: 1.

  • Page 72: Figure 5.1 Autotransformer

    1. Make sure that the start-stop switch (ST, on control panel) and circuit breakers CB-1 (in the control box and CB-2 (on the transformer) are in position “O” (OFF). Plug in and lock the 460VAC power plug at the recepta- cle on the transformer.
  • Page 73 5.3.2 Fresh Air Position Sensor The VPS allows the user to determine position of the fresh air vent via function code 45. This function code is accessible via the code select key. The vent position will display for 30 seconds whenever motion corresponding to 5CMH (3CFM) or greater is detected.
  • Page 74 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. 5.6.1 Starting the Unit 1. With power properly applied, the fresh air damper set, and if required, the water-cooled condenser con- nected (refer to sections 5.2, 5.3, and 5.4), place the START-STOP switch to “I”...
  • Page 75 PRE-TRIP DIAGNOSIS CAUTION Pre-trip inspection should not be per formed with critical temperature cargoes in the container. CAUTION When Pre-Trip key is pressed, dehumidification and bulb mode will be deactivated. At the com- pletion of Pre-Trip activity, dehumidification and bulb mode must be reactivated. Pre-Trip diagnosis provides automatic testing of the unit components using internal measurements and compari- son logic.
  • Page 76 When an automatic test fails, it will be repeated once. A repeated test failure will cause “FAIL” to be shown on the right display, with the corresponding test number to the left. The user may then press the DOWN ARROW to repeat the test, the UP ARROW to skip to the next test or the PRE-TRIP key to terminate testing.
  • Page 77 Probe Diagnostic Logic - Standard If the probe check option (controller configuration code CnF31) is configured for standard, the criteria used for comparison between the primary and secondary control probes is: 1C (1.8F) for perishable set points or 2C (3.6F) for frozen set points. If 25 or more of 30 readings taken within a 30-minute period are outside of the limit, then a defrost is initi- ated and a probe check is performed.

  • Page 78: Figure 5.3 Controller Operation - Perishable Mode

    Figure 5.3 Controller Operation - Perishable Mode Figure 5.4 Controller Operation - Frozen Mode T-354 5–8...

  • Page 79: Figure 5.5 Perishable Mode Cooling

    5.10 SEQUENCE OF OPERATION General operation sequences for cooling, heating, and defrost are provided in the following sub-paragraphs. Sche- matic representation of controller action are provided in Figure 5.3 Figure 5.4. Refer to Section 4 for detailed descriptions of special events and timers that are incorporated by the controller in specific modes of operation. 5.10.1 Sequence of Operation - Perishable Mode Cooling NOTE...

  • Page 80: Figure 5.6 Perishable Mode Heating

    5. When the calculation reaches -250, contacts TC and TN are opened to de-energize compressor and con denser fan motors. The cool light is also de-energized. 6. The evaporator fan motors continue to run to circulate air throughout the container. The in-range light remains illuminated as long as the supply air is within tolerance of set point.

  • Page 81: Figure 5.7 Frozen Mode

    5.10.3 Sequence of Operation - Frozen Mode Cooling NOTE In the Frozen Mode of operation the evaporator motors run in low speed. NOTE In low temperature ambients, the condenser fan will be cycled by the controller to maintain proper con- densing pressure.

  • Page 82: Figure 5.8 Defrost

    5.10.4 Sequence of Operation - Defrost The defrost cycle may consist of up to three distinct operations. The first is de-icing of the coil, the second is a probe check cycle, and the third is snap freeze. 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).
  • Page 83 The actual temperatures used to make the “open” or “closed” determinations are dependent on the type of defrost request made and the operator setting of configuration variable CnF41. Configuration variable CnF41may be fac- tory set at the default value of 25.6C (78F) or a lower value of 18C (64F). When a request for defrost is made by the use of the Manual Defrost Switch or Communications, the unit will enter defrost when the reading at the defrost temperature sensor is at or below the CnF41 setting.
  • Page 84 In the ON position the EBS will be enabled. With the MODE SWITCH in the FULL COOL MODE. The following will occur simultaneously: 1. The EBS switch will enable EBS input. 2. The phase detection circuit will detect the phase rotation and close to provide power to the compressor contactor. 3.

  • Page 85: Troubleshooting

    SECTION 6 TROUBLESHOOTING REMEDY/ CONDITION POSSIBLE CAUSE REFERENCE SECTION UNIT WILL NOT START OR STARTS THEN STOPS External power source OFF Turn on Start-Stop switch OFF or defective Check No power to unit Circuit breaker tripped or OFF Check Autotransformer not connected 5.2.2 Circuit breaker OFF or defective Check...

  • Page 86: Unit Runs But Has Insufficient Cooling

    REMEDY/ CONDITION POSSIBLE CAUSE REFERENCE SECTION UNIT RUNS BUT HAS INSUFFICIENT COOLING Compressor Compressor valves defective Abnormal pressures Controller malfunction Evaporator fan or motor defective 7.16 Refrigeration System Suction modulation valve malfunction 7.19 Condenser Pressure Transducer defective Check Shortage of refrigerant 7.7.1 UNIT WILL NOT HEAT OR HAS INSUFFICIENT HEATING Start-Stop switch OFF or defective...

  • Page 87: Abnormal Pressures (Cooling)

    REMEDY/ CONDITION POSSIBLE CAUSE REFERENCE SECTION Manual defrost switch defective Replace Will not initiate defrost manually Defrost temperature sensor open 5.10.4 Initiates but relay (DR) Low line voltage drops out Heater contactor or coil defective Replace Initiates but does not defrost Heater(s) burned out 7.15 Frequent defrost...

  • Page 88: Controller Malfunction

    REMEDY/ CONDITION POSSIBLE CAUSE REFERENCE SECTION CONTROLLER MALFUNCTION Defective Sensor 7.23 Defective wiring Check Will not control Fuse (F1, F2) blown Replace Stepper motor suction modulation valve circuit malfunction 7.19 6.10 NO EVAPORATOR AIR FLOW OR RESTRICTED AIR FLOW Frost on coil Evaporator coil blocked Dirty coil 7.15...

  • Page 89: Service

    SECTION 7 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.

  • Page 90: Manifold Gauge Set

    A R-134a manifold gauge/hose set with self-sealing hoses (see Figure 7.3) is required for service of the models covered within this manual. The manifold gauge/hose set is available from Carrier Transicold. (Carrier Transicold P/N 07-00294-00, which includes items 1 through 6, Figure 7.3).

  • Page 91: Figure 7.3 Manifold Gauge/Hose Set

    Figure 7.3 Manifold Gauge/Hose Set 3 - Blue To Low Side To High Side Service Port Service Port 3 - Red Red Knob Blue Knob 3 - Yellow 1. Manifold Gauge Set 4. Hose Fitting w/O-ring (M14 x 1.5) 2. Hose Fitting (0.5-16 Acme) 5.

  • Page 92: Pumping The Unit Down

    Figure 7.4 Refrigeration System Service Connections 7 - BLUE 8 - YELLOW 9 - RED 1. Discharge Service Valve 8. Center Hose 2. Compressor 9. High Side Hose 3. Suction Service Valve 10. Electronic Vacuum Gauge 4. Receiver or Water Cooled Condenser 11.

  • Page 93: Refrigerant Leak Checking

    7.5).  2. Essential tools to properly evacuate and dehydrate any system include a vacuum pump (8m /hr = 5cfm vol- ume displacement) and an electronic vacuum gauge. The pump is available from Carrier Transicold (P/N 07-00176-11). ° ° 3. If possible, keep the ambient temperature above 15.6 C (60 F) to speed evaporation of moisture.

  • Page 94: Procedure - Partial System

    5. Open the vacuum pump and electronic vacuum gauge valves, if they are not already open. Start the vacuum pump. Evacuate unit until the electronic vacuum gauge indicates 2000 microns. Close the electronic vacuum gauge and vacuum pump valves. Shut off the vacuum pump. Wait a few minutes to be sure the vacuum holds. ...

  • Page 95: Refrigerant Charge

    REFRIGERANT CHARGE 7.7.1 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. 1.

  • Page 96: Removal And Replacement Of Compressor

    3. Check oil level in service replacement compressor (refer to paragraph Section 7.8.6). 4. A compressor terminal wiring kit must be ordered as a separate item when ordering replacement compres- sor. Appropriate installation instructions are included with kit. 5. Refer to Table 7–6 Table 7–7 for applicable compressor wear limits and torque values.

  • Page 97: Compressor Disassembly

    13. Install new gaskets on service valves. 14. Install mounting bolts in service valves and torque to 2.77 to 4.15mkg (20-30ft/lb). 15. Attach two hoses (with hand valves near vacuum pump) to the suction and discharge service valves. Dehy- drate and evacuate compressor to 500 microns (75.9cm Hg vacuum = 29.90 inches Hg vacuum). Turn off valves on both hoses to pump.

  • Page 98: Figure 7.8 Bottom Plate Removed

    Figure 7.8 Bottom Plate Removed 1. Oil Pressure Relief Valve 4. Cap screw 2. Oil Return Check Valve 5. Connecting Rod and Cap Assembly 3. Oil Suction Tube - - - - - 2. Loosen cylinder head cap screws. If the cylinder head is stuck, tap the center of the cylinder head with a wooden or lead mallet.

  • Page 99: Figure 7.9 Oil Pump And Bearing Head

    Figure 7.9 Oil Pump and Bearing Head Set screw must be removed. 1. Oil Pump & Bearing Head 4. Oil Inlet Port 2. Thrust Washer 5. Oil Pump Inlet 3. Oil Pickup Tube - - - - - NOTE If the oil pump was not operating properly, the entire oil pump & bearing head assembly must be replaced.

  • Page 100: Figure 7.11 Motor End Cover

    1. Be very careful not to damage the motor windings when removing the motor end cover (see Figure 7.11), as the cover fits over the winding coils. Loosen the cap screws, break the seal, and then re move all cap screws except one in the top of the cover.

  • Page 101: Compressor Re-Assembly

    Figure 7.12 Equalizing Tube and Lock Screw Assembly 1. Equalizer Tube and Lock Screw Assembly 2. Lockwasher 3. Counterweight - Motor End - - - - - Figure 7.13 Crankshaft Assembly 1. Cap screw 6. Connecting Rod 2. Cap 7. Compression Ring 3.

  • Page 102: Preparation

    7.8.4 Preparation Suction and Discharge Valves If the valve seats look damaged or worn, replace valve plate assembly. Always use new valves because it is diffi- cult to reinstall used valves so that they will seat as before removal. Any valve wear will cause leakage. Suction valves are positioned by dowel pins (see Figure 7.14).

  • Page 103: Installing The Components

    Compressor Oil Level CAUTION Use only Carrier Transicold approved Polyol Ester Oil (POE) - Castrol-Icematic SW20 compres- sor oil with R-134a. Buy in quantities of one quart or smaller. When using this hygroscopic oil, immediately reseal. Do not leave container of oil open or contamination will occur.

  • Page 104: High Pressure Switch

    3. Connect the suction connection of the gauge manifold to the compressor suction service valve port, and immerse the common connection of the gauge manifold in an open container of refrigeration oil. Extreme care must be taken to ensure the manifold common connection remains immersed in oil at all times. Other- wise air and moisture will be drawn into the compressor.

  • Page 105: 7.10 Condenser Coil

    6. Open cylinder valve. Slowly close bleed-off valve to increase pressure on switch. The switch should open at  a static pressure up to 25kg/cm (350psig). If a light is used, light will go out. If an ohmmeter is used, the meter will indicate open circuit.

  • Page 106: 7.12 Water-Cooled Condenser Cleaning

    CAUTION Take necessary steps (place plywood over coil or use sling on motor) to prevent motor from falling into condenser coil. 3. Remove motor mounting hardware and replace the motor. It is recommended that new locknuts be used when replacing motor. Connect wiring per wiring diagram. 4.
  • Page 107 4. De-scale water tubes with Oakite No. 32 to remove scale. 5. Flush. 6. Neutralize. 7. Flush. 8. Put unit back in service under normal load and check head (discharge) pressure. Detailed Procedure: 1. Drain and flush the water circuit of the condenser coil. If scale on the tube inner surfaces is accompanied by slime, a thorough cleaning is necessary before de-scaling process can be accomplished.

  • Page 108: Figure 7.17 Water-Cooled Condenser Cleaning - Forced Circulation

    Figure 7.17 Water-Cooled Condenser Cleaning - Forced Circulation 1. Pump support 7. Vent 2. Tank 8. Close vent pipe valve when pump is running 3. Suction 9. Condenser 4. Pump 10. Remove water regulating valve 5. Priming Connection (Centrifugal pump 50 11.

  • Page 109: 7.13 Filter-Drier

    7.13 FILTER-DRIER On units equipped with a water-cooled condenser, if the sight glass appears to be flashing or bubbles are con- stantly moving through the sight glass when the suction modulation valve is fully open, the unit may have a low refrigerant charge or the filter-drier could be partially plugged.

  • Page 110: Expansion Valve Replacement

    5. The readings may cycle from a high to a low reading. Take readings of temperature and pressure every three to five minutes for a total of 5 or 6 readings 6. From the temperature/pressure chart (Table 7–8), determine the saturation temperature corresponding to the evaporator outlet test pressures at the suction modulation valve.

  • Page 111: 7.15 Evaporator Coil And Heater Assembly

    1. Pump down the unit per Section 7.4. 2. If TXV replacement is to be performed from the front of the unit, open the upper right (EFM#1) access panel (see Figure 3.1) and remove the evaporator fan motor. 3. Remove cushion clamp that secures the valve body to the bracket. 4.

  • Page 112: Evaporator Heater Replacement

    7. Unsolder the two coil connections, one at the distributor and the other at the coil header. 8. After defective coil is removed from unit, remove defrost heaters and install on replacement coil. 9. Install coil assembly by reversing above steps. 10.

  • Page 113: Figure 7.24 Evaporator Fan Assembly

    5. Connect wiring per applicable wiring diagram and install motor and fan assembly in unit. Apply power, momentarily, to check fan rotation. If fan spins back wards, refer to Section 3.3 for two-speed motors. 6. Replace access panel, making sure panel does not leak. Make sure that the T.I.R. locking device is lock wired.
  • Page 114 7.17 EVAPORATOR FAN MOTOR CAPACITORS The evaporator fan motors are of the permanent-split capacitor type. The motor is equipped with one capacitor used in the high speed circuit, and another capacitor is used for the low speed circuit. 7.17.1 When To Check For a Defective Capacitor •...
  • Page 115 HD) for the unit. This will assist in helping to remove the corrosive fumigation chemicals and dislodging of the cor- rosive elements. This cleaner is available from the Carrier Transicold Performance Parts Group (PPG) and can be ordered through any of the PPG locations; Part Number NU4371-88.

  • Page 116: Figure 7.25 Suction Modulation Valve (Smv)

    7.19 SUCTION MODULATION VALVE (SMV) On start up of the unit, the valve 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.
  • Page 117 Checking with SMA-12 portable stepper drive tester The SMA-12 portable stepper drive tester (Carrier Transicold P/N 07-00375-00) is a battery-operated stepper drive that will open and close the SMV, allowing a more thorough check of the motor. To check operation: 1.

  • Page 118: Figure 7.26 Dprv Replacement Value Chart

    NOTE If valve cap is found to be leaking it may be replaced using cap & O-ring (Carrier Part Number 40- 50024-00). T-354...
  • Page 119 1. Obtain a grounding wrist strap (Carrier Transicold PN 07-00304-00) and a static dissipation mat (Carrier Transicold PN 07-00304-00). The wrist strap, when properly grounded, will dissipate any potential build up on the body.

  • Page 120: Figure 7.27 Controller Section Of The Control Box

    7.22.2 Controller Troubleshooting A group of test points (TP) (see Figure 7.27) are provided on the controller for troubleshooting electrical circuits (see schematic diagram, Section 8). A description of the test points follows: Figure 7.27 Controller Section of the Control Box Controller Software Controller Mounting Screw...
  • Page 121 7.22.3 Controller Programming Procedure To load new software into the module, the programming card (PCMIA) is inserted into the programming/software port. CAUTION The unit must be OFF whenever a program ming card is inserted or removed from the control- ler programming port. Procedure for loading operational software: 1.
  • Page 122 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.

  • Page 123: Figure 7.28 Sensor And Cable Splice

    Table 7–1 Sensor Temperature/Resistance Chart Temperature (C) Temperature (F) Resistance (Ohms) RRS, RTS, SRS and STS: 32,650 +/-91 10,000 +/-50 AMBS and DTS 32,650 + 1720 - 1620 10,000 + 450 - 430 Due to the variations and inaccuracies in ohmmeters, thermometers, or other test equipment, a reading within 2% of the chart value would indicate a good sensor.

  • Page 124: Figure 7.29 Sensor Types

    Figure 7.29 Sensor Types Sensor 40mm (1- - 1/2 inch) 6.3mm (1/4- - inch) Mounting Stud Type 40 mm (1-1/2 inches) 6.3- - mm (1/4- - inch) Sensor Bulb Type 5. Strip back insulation on all wiring 6.3mm (1/4-inch). 6. Slide a large piece of heat shrink tubing over the cable, and place small pieces of heat shrink tubing, one over each wire, before adding crimp fittings as shown in Figure 7.28.

  • Page 125: Figure 7.30 Return Sensor Positioning

    Figure 7.30 Return Sensor Positioning Sensor Wires Cap and Grommet Assembly Evaporator Back Panel Probe Holder Return Stream Return Sensor (1/4--inch) Sensor STS/SRS Reinstall the supply sensor as shown inFigure 7.31. For proper placement of the supply sensor, be sure to position the seal section of the sensor against the side of the mounting clamp.
  • Page 126 Upper VPS: In order to replace the VPS, the panel must be removed and replaced with another upper fresh air panel equipped with VPS. Upon installation, a new VPS assembly requires calibration as follows: 1. Rotate the vent to the 0 CMH/ CFM position. 2.
  • Page 127 7.25.1 Replacing the Recorder 1. Turn power to the unit OFF. 2. Open the recorder door (see Figure 7.32, item 1). 3. Locate the connector below the recorder, and squeeze the ears together to disconnect the plug (item 6). 4. Remove the four mounting screws (item 8) and re move the recorder. 5.

  • Page 128: Figure 7.32 Electronic Partlow Temperature Recorder

    Introduction This procedure provides instructions for repair of the Carrier Transicold composite control box. Damage to the control box may be in the form of a chip or hole, a crack, a damaged thread insert or damage to the door hinge inserts. Gen- erally, the object of the repair must be to ensure sufficient strength is restored to the damaged area and the repair must keep the box water tight.
  • Page 129 The threaded brass inserts that are molded into the control box will need to be replaced if the threads become stripped or if the insert becomes loose. The inserts and epoxy are contained in repair kit, Carrier Transicold part number 76-50084-00 (see Table 7–3).

  • Page 130: Figure 7.33 Door Hinge Repair

    Materials needed: 1. Cut two square pieces of 3mm thick (1/8-inch) aluminum or stainless steel approximately 40mm (1- 5/8”) square. These squares will serve as backing plates. 2. Two nuts, bolts (10-24 x 1") and washers for each insert that needs repair. a.

  • Page 131: Table 7-3 Insert Repair Kit

    Durabond Epoxy E20-HP (Loctite 29314) 02-00082-00 Static Mixing Tube (Loctite 983440) 07-00390-00 Instruction Sheet 98-02338-00 NOTE Insert repair procedures require use of an Application Gun, Carrier part number 07-00391-00 (Loctite 983435) Table 7–4 Drill Information ITEM INSERT PART NUMBER DRILL SIZE AND DEPTH 34-06231-01 10.3mm x 17.8mm deep (.404in.

  • Page 132: Figure 7.34 Insert Location

    Figure 7.34 Insert Location INSERT PART NUMBERS 34-06231-## WHERE THE ## IS AS INDICATED T-354 7–44...

  • Page 133: Figure 7.35 Communications Interface Installation

    7.28 COMMUNICATIONS INTERFACE MODULE INSTALLATION Figure 7.35 Communications Interface Installation Communications Interface Module Units with communication interface module provision have the required wiring installed. The provision wiring kit (part number 76-00685-00), includes three pre-addressed wires installed between the circuit breaker and commu- nication interface module locations.
  • Page 134 Removing the capacitor WARNING Make sure power to the unit is OFF and power plug disconnected before removing capacitor(s). WARNING Before removing the capacitors the terminals must be checked for voltage with a multimeter. The discharge resistors installed on the unit (capacitors) should bring the voltage to a safe level in a minute.

  • Page 135: Table 7-5 Recommended Bolt Torque Values (Dry, Non-Lubricated For 18-8 Stainless Steel)

    Table 7–5 Recommended Bolt Torque Values (Dry, Non-Lubricated for 18-8 Stainless Steel) BOLT DIA. THREADS in-lb ft-lb Free Spinning 5/16 14.9 27.1 7/16 58.3 9/16 77.3 1104 124.7 1488 168.1 Non Free Spinning (Locknuts etc.) 82.5 5/16 145.2 12.1 16.4 22.0 29.8 7/16...

  • Page 136: Table 7-6 Wear Limits For Compressors

    Table 7–6 Wear Limits For Compressors MAXIMUM WEAR FACTORY MAXIMUM FACTORY MINIMUM BEFORE REPAIR PART NAME inches inches inches MAIN BEARING Main Bearing Diameter 1.6268 41.3207 .0020 0.0508 Main Bearing Journal Diameter 1.6233 41.2318 .0020 0.0508 PUMP END Main Bearing Diameter 1.3760 34.9504 .0020...

  • Page 137: Table 7-7 Compressor Torque Values

    Table 7–7 Compressor Torque Values SIZE TORQUE RANGE THREADS DIAMETER USAGE PER INCH ft-lb (inches) 1/16 27 (pipe) 8 - 12 11 - 16 Pipe Plug - Crankshaft 20 (pipe) 6 - 10 8 - 13 Oil Return Check Valve - Crankcase 20 (pipe) 20 - 25 27 - 34...

  • Page 138: Table 7-8 R-134A Temperature - Pressure Chart

    Table 7–8 R-134a Temperature - Pressure Chart Temperature Vacuum Temperature Pressure "/hg cm/hg kg/cm psig kg/cm 14.6 49.4 37.08 0.49 24.5 168.9 1.72 1.69 12.3 41.6 31.25 0.42 26.1 180.0 1.84 1.80 32.8 24.64 0.33 27.8 191.7 1.95 1.92 22.7 17.00 0.23 29.6...

  • Page 139: Figure 7.36 R-134A Compressor Pressure & Motor Current Curves Versus Ambient Temperature (1 Of 2)

    Figure 7.36 R-134a Compressor Pressure & Motor Current Curves Versus Ambient Temperature (1 of 2) Note: Curves to be used as troubleshooting guide only for model series 69NT40 with fresh air makeup vent closed, unit powered on 460VAC/60Hz and SMV 100% open. (Bar) psig (22.0)

  • Page 140: Figure 7.37 R-134A Compressor Pressure & Motor Current Curves Versus Ambient Temperature (2 Of 2)

    Figure 7.37 R-134a Compressor Pressure & Motor Current Curves Versus Ambient Temperature (2 of 2) (Bar) psig (.97) (.83) (.69) (.55) 35 F (1.7 C) Box (.41) (.28) (.14) 0 F (-17.8 C) Box - -2 (-.14) (-.28) - -4 (-.41) - -6 ( F)

  • Page 141: Figure 8.1 Legend

    SECTION 8 ELECTRICAL WIRING SCHEMATIC AND DIAGRAMS INTRODUCTION This section contains Electrical Schematic and Wiring Diagrams, the diagrams are presented as follows: Figure 8.1provides the legend for use with all figures. Figure 8.2 provides the basic schematic diagram for units with single evaporator fan capability and VPS. Figure 8.3 &...

  • Page 142: Figure 8.2 Schematic Diagram - Standard Unit Configuration

    Figure 8.2 Schematic Diagram - Standard Unit Configuration BASED ON 62--66686--00 T-354 8–2...

  • Page 143: Figure 8.3 Unit Wiring Diagram - Standard Unit Configuration (1 Of 2)

    Figure 8.3 Unit Wiring Diagram - Standard Unit Configuration (1 of 2) BASED ON 62- -66686- -00 8–3 T-354...

  • Page 144: Figure 8.4 Unit Wiring Diagram Standard Unit Configuration (2 Of 2)

    Figure 8.4 Unit Wiring Diagram Standard Unit Configuration (2 of 2) BASED ON 62- -66686- -00 T-354 8–4...

  • Page 145: Figure 8.5 Schematic Diagram - Units With Normal Evap Fan Capability, Transfresh & Crankcase Heater

    Figure 8.5 Schematic Diagram - Units with Normal Evap Fan Capability, TransFresh & Crankcase Heater BASED ON 62--66680--00 8–5 T-354...

  • Page 146: Figure 8.6 Wiring Diagram - Units With Normal Evap Fan Capability, Transfresh & Crankcase Heater (1)

    Figure 8.6 Wiring Diagram - Units with Normal Evap Fan Capability, TransFresh & Crankcase Heater (1) BASED ON 62--66680--00 T-354 8–6...

  • Page 147: Figure 8.7 Wiring Diagram - Units With Normal Evap Fan Capability, Transfresh & Crankcase Heater (2)

    Figure 8.7 Wiring Diagram - Units with Normal Evap Fan Capability, TransFresh & Crankcase Heater (2) BASED ON 62- -66680- -00 8–7 T-354...
  • Page 148 T-354 8–8...
  • Page 149 Bulb Mode - Perishable, Dehumidification 4–7 Controller Software 4–4 Controller Troubleshooting 7–32 Cracks 7–41 Cable Restraint 2–3 Crankcase Heater 5–6 Carrier Transicold Upflow introduction 2–1 Changing the Chart 7–39 Check Controller Function Codes 5–4 DataBANKTM Card 4–15 Checking High Pressure Switch 7–16 DataCORDER 4–10 5–4...
  • Page 150 Emergency Operation (Option) 5–13 Evacuation and dehydration 7–5 Key Pad 4–2 Evacuation and Dehydration - Complete System 7–5 Evacuation and Dehydration - Partial System 7–6 Evacuation and dehydration preparation 7–5 Labels 2–3 Evaporator 2–3 Logging Interval (dCF03) 4–12 Evaporator Coil and Heater Assembly 7–23 Lower Air (Fresh Air Make Up) 2–3 Evaporator Coil Heaters 3–8 Evaporator Coil Replacement 7–23...
  • Page 151 Removing the Capacitor 7–26 Temperature Control - Frozen Mode 4–8 Removing the capacitor 7–46 Temperature Control Microprocessor System 4–1 Replacing the Recorder 7–39 Temperature Readout 2–1 Rezeroing the Recording Thermometer 7–39 Temperature Recorder 2–2 Rupture Disc 3–7 Temperature Sensor Service 7–34 Thermistor Format (dCF04) 4–12 Thermometer Port 2–2 Thermostatic Expansion Valve (TXV) 7–21...
  • Page 154 Carrier Transicold Division, Carrier Corporation A part of UTC Building & Industrial Systems, a business unit of United P.O. Box 4805 Technologies Corporation. Stock symbol UTX. Syracuse, NY 13221 USA Original Instructions www.carrier.transicold.com...

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