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Carrier TRANSICOLD 69NT40-531 Series Manual

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Carrier
Transicold
Container
Refrigeration
T-292 Rev C Change 03/05
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Models
69NT40-531-001 to 199
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Operation
& Service

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Summary of Contents for Carrier TRANSICOLD 69NT40-531 Series

  • Page 1 Carrier Transicold Container Refrigeration Models 69NT40-531-001 to 199 Operation & Service T-292 Rev C Change 03/05 Downloaded from ManualsNet.com search engine...
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  • Page 3 69NT40-531-001 to 199 Carrier Transicold. A member of the United Technologies Corporation family. Stock symbol UTX. Carrier Transicold Divsion, Carrier Corporation, P.O. Box 4805, Syracuse, N.Y. 13221 U. S. A. ã 2003 CarrierCorporation D Printed in U. S. A. 04/03 Downloaded from ManualsNet.com...
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  • Page 5 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.
  • Page 6 WARNING Make sure that the unit circuit breaker(s) (CB-1 & CB-2) and the START-STOP switch (ST) are in the “O” (OFF) position before connecting to any electrical power source. WARNING Never use air for leak testing. It has been determined that pressurized, mixtures of refrigerant and air can undergo combustion when exposed to an ignition source.
  • Page 7 CAUTION Use only Carrier Transicold approved Polyol Ester Oil (POE) - - Castrol-Icematic SW20 compressor 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.
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  • Page 9 TABLE OF CONTENTS PARAGRAPH NUMBER Page GENERAL SAFETY NOTICES ............Safety-1 FIRST AID .
  • Page 10 TABLE OF CONTENTS PARAGRAPH NUMBER Page 2.1.5 Air Cooled Condenser Section ............2.1.6 Water-Cooled Condenser Section .
  • Page 11 TABLE OF CONTENTS PARAGRAPH NUMBER Page 3.6.7 Alarm Configuration (dCF07 -- dCF10) ..........3-10 3.6.8 DataCORDER Power-Up .

  • Page 12: Table Of Contents

    TABLE OF CONTENTS PARAGRAPH NUMBER Page TROUBLESHOOTING ............... . . UNIT WILL NOT START OR STARTS THEN STOPS .

  • Page 13: Paragraph Number Page

    TABLE OF CONTENTS PARAGRAPH NUMBER Page CONDENSER COIL ..............6-10 CONDENSER FAN AND MOTOR ASSEMBLY .
  • Page 14 TABLE OF CONTENTS PARAGRAPH NUMBER Page 6.26 COMPOSITE CONTROL BOX REPAIRS ..........6-29 6.26.1 Introduction .
  • Page 15 LIST OF ILLUSTRATIONS - - Continued FIGURE NUMBER Page Figure 6-11 Water Cooled Condenser Cleaning - Gravity Circulation ....... . . 6-12 Figure 6-12 Thermostatic Expansion Valve Bulb .
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  • Page 17 18 and 24 volts, single phase. discharge pressure gauges. The unit is fitted with suction and discharge transducers. The readings may The controller is a Carrier Transicold Micro-Link 2i be viewed on the controller display. microprocessor. controller...
  • Page 18 1.3.11 Condenser Coil 1.3.19 460 Volt Cable Various power cable and plug designs are available for The unit may be fitted with a 5 row coil using nominal 3/8 the main 460 volt supply. The plug options tailor the inch tubing, or the unit may be fitted with a 4 row coil cables to each customers requirements.

  • Page 19: Figure 2-1 Refrigeration Unit -- Front Section

    SECTION 2 DESCRIPTION 2.1 GENERAL DESCRIPTION expansion valve, suction modulation valve and evaporator coil heaters. The unit model number, serial number and parts identification number can be found on 2.1.1 Refrigeration Unit - - Front Section the serial plate to the left of the economizer. The unit is designed so that the majority of the 2.1.2 Fresh Air Makeup Vent components are accessible from the front, see...

  • Page 20: Figure 2-2 Evaporator Section

    2.1.3 Evaporator Section thermostat and suction temperature sensor. The evaporator fans circulate air through the container The evaporator section (Figure 2-2) contains the by pulling it in the top of the unit, directing it through the temperature recorder bulb or return recorder sensor, evaporator coil, where it is heated or cooled, and return temperature sensor, evaporator expansion valve, discharging it at the bottom.

  • Page 21: Figure 2-3 Compressor Section

    2.1.4 Compressor Section compressor power plug, the discharge pressure transducer and the suction pressure transducers. The compressor section includes the compressor (with The supply temperature sensor, supply recorder sensor high pressure switch) and the oil separator. and ambient sensor are located at the left side of the This section also contains the oil return solenoid, compressor.

  • Page 22: Figure 2-4 Condenser Section

    2.1.5 Air Cooled Condenser Section The condenser fan pulls air in the bottom of the coil and it is discharged horizontally out through the condenser fan grille. The air cooled condenser section (Figure 2-4) consists of the condenser fan, condenser coil, receiver, sight This section also contains the economizer, economizer glass/moisture indicator, liquid line service valve, solenoid valve, economizer expansion valve and the...

  • Page 23: Figure 2-5 Water-Cooled Condenser Section

    2.1.6 Water-Cooled Condenser Section The water cooled condenser replaces the standard unit receiver. The water-cooled condenser section (Figure 2-5) This section also contains the economizer, economizer consists of a water-cooled condenser, sight glass, solenoid valve, economizer expansion valve, rupture disc, filter-drier, water couplings and water moisture/liquid indicator and the unloader solenoid pressure switch.

  • Page 24: Figure 2-6 Control Box Section

    2.1.7 Control Box Section 2.1.8 Communications Interface Module The control box (Figure 2-6) includes the manual The communications interface module is a slave operation switches; circuit breaker (CB-1); compressor, module which allow communication with a master fan and heater contactors; control power transformer; central monitoring station.
  • Page 25 2.2 REFRIGERATION SYSTEM DATA Model RSH105 Weight (Dry) 46.5 kg (103 lb) Approved Oil Mobil -- ST32 a Compressor/Motor a. Compressor/Motor Oil Charge 2957 ml (100 ounces) Assembly Assembly The oil level range, with the compressor off, should be between the bottom and one-eighth Oil Sight Glass level of the sight glass.
  • Page 26 2.3 ELECTRICAL DATA CB-1 Trips at 29 amps CB-2 (50 amp) Trips at 62.5 amps a. Circuit Breaker a. Circuit Breaker CB-2 (70 amp) Trips at 87.5 amps b. Compressor Full Load Amps (FLA) 13 amps @ 460 vac Motor 380 vac, Single Phase, 460 vac, Single Phase, 50 hz...

  • Page 27: Table 2-1 Safety And Protective Devices

    Table 2.3 - - Continued Orange wire Power Red wire Output Brown wire Ground Input voltage 5 vdc Output voltage 0 to 3.3 vdc i. Humidity Sensor Humidity Sensor Output voltage readings verses relative humidity (RH) percentage: 0.99 V 1.65 V 2.31 V 2.97 V 2.4 SAFETY AND PROTECTIVE DEVICES...
  • Page 28 2.5 REFRIGERATION CIRCUIT 2.5.2 Economized Operation 2.5.1 Standard Operation In the economized mode the frozen and pull down capacity of the unit is increased by subcooling the liquid Starting at the compressor, (see Figure 2-7, upper refrigerant entering the evaporator expansion valve. schematic) the suction gas is compressed to a higher Overall efficiency is increased because the gas leaving pressure and temperature.

  • Page 29: Figure 2-7 Refrigeration Circuit Schematic -- Standard Operation

    STANDARD OPERATION WITH RECEIVER EVAPORATOR LOW SIDE ACCESS VALVE TXV BULB CONDENSER QUENCH TXV QUENCH ECONOMIZER BULB TXV BULB FILTER DRIER DISCHARGE ECONOMIZER SERVICE CONNECTION CPDS OIL SEPARATOR ECONOMIZER SERVICE CONNECTION RECEIVER ECONOMIZER FUSIBLE PLUG SUCTION SERVICE CONNECTION SIGHT GLASS MOISTURE INDICATOR OIL RETURN SERVICE VALVE...

  • Page 30: Figure 2-8 Refrigeration Circuit Schematic -- Economized Operation

    ECONOMIZER OIL SEPARATOR ECONOMIZER SERVICE ECONOMIZER CONNECTION RECEIVER LIQUID LINE SERVICE CON- NECTION LIQUID ECONOMIZER PRESSURE Figure 2-8 Refrigeration Circuit Schematic - - Economized Operation TXV BULB QUENCH TXV OIL SEPARATOR SUCTION SERVICE VALVE RECEIVER LIQUID ECONOMIZER PRESSURE SUCTION Figure 2-9 Refrigeration Circuit Schematic - - Unloaded Operation T-292 2-12 Downloaded from...

  • Page 31: Figure 3- 1 Temperature Control System

    SECTION 3 MICROPROCESSOR 3.1 TEMPERATURE CONTROL MICROPRO- record unit operating parameters cargo CESSOR SYSTEM temperature parameters for future retrieval. Coverage of the temperature control software begins with The temperature control Micro-Link 2i microprocessor paragraph 3.2. Coverage of the DataCORDER software system (see Figure 3- 1) consists of a key pad, display is provided in paragraph 3.6.

  • Page 32: Figure 3- 2 Key Pad

    3.1.1 Key Pad Table 3-1 Key Pad Function The key pad (Figure 3- 2) is mounted on the right-hand FUNCTION side of the control box. The key pad consists of eleven push button switches that act as the user’s interface Code Select Accesses function codes.

  • Page 33: Figure 3- 4 Control And Expansion Modules

    Mounting Screw Control Circuit Power Connection Micro-Link 2i Control/DataCORDER Module (Location: In back of controller) Connectors Software Programming Port Test Points Battery Pack Fuses Expansion Module Figure 3- 4 Control and Expansion Modules 3.1.3 Controller build up of frost and ice and ensure proper air flow across the coil.
  • Page 34 3.2.1 Configuration Software (Configuration Vari- 3.3.2 Defrost Interval ables) Function code Cd27 may be operator set to initiate The Configuration Software is a variable listing of the defrost at intervals of 3, 6, 9, 12 or 24 hours. It may also components available for use by the Operational be set to OFF (no defrost).
  • Page 35 3.3.7 Perishable Mode - - Economy If the mode is terminated by a condition other than the humidity sensor, e.g., an out-of-range or compressor The economy mode is an extension of the conventional shutdown condition, the heat relay is de-energized mode.
  • Page 36 3.3.10 Temperature Control - - Frozen Mode 3.4 CONTROLLER ALARMS With configuration variable CnF26 (Heat Lockout Alarm display is an independent controller software Temperature) set to --10_C the frozen mode of operation function. If an operating parameter is outside of is active with set points at or below - -10_C (+14_F).
  • Page 37 4.8. Bulb Mode changes Bulb Mode End 3.6 DataCORDER 3.6.1 Description USDA Trip Comment The Carrier Transicold “DataCORDER,” software is Humidification Start and End integrated into the controller and serves to eliminate the USDA Probe Calibration temperature recorder paper chart.

  • Page 38: Table 3-2 Datacorder Configuration Variables

    10 sensors 1 humidity input configuration to generic and selecting which data points (dCF02=94) 1 cargo probe (thermistor input) to record may be done using the Carrier Transicold Data 3 C.A. inputs (NOT APPLICABLE) Retrieval Program. T-292 Downloaded from ManualsNet.com...

  • Page 39: Figure 3- 5 Standard Configuration Download Report

    Raw Data Report for ABC1234567 May 31, 2001 to Jun 04, 2001 System Configuration at the Time of Interrogation: Interrogated On Sept 05, 2001 Extracted by DataLine Rev 1.0.0 Controller Software: 5120 Controller Serial #: 04163552 Bill of Lading #: 1 Origin: Origin Date: Destination:...

  • Page 40: Figure 3- 6 Data Reader

    If a probe alarm is configured to ON, then the associated a. DataReader alarm is always enabled. The Carrier Transicold Data Reader (see Figure 3- 6) is If the probes are configured to AUTO, they act as a a simple to operate hand held device designed to extract group.
  • Page 41 b. DataView displays USDA #1, #2, #3 and the supply and return air temperatures. Cold treatment recording is backed up by The DataView software for a personal computer is a battery so recording can continue if AC power is lost. supplied on a floppy disk.

  • Page 42: Table 3-4 Controller Configuration Variables

    To display alarm codes: 3.6.14 ISO Trip Header a. While in the Default Display mode, press the ALT. DataLine provides the user with an interface to MODE & ALARM LIST keys. This accesses the Data- view/modify current settings of the ISO trip header CORDER Alarm List Display Mode, which displays through the ISO Trip Header screen.

  • Page 43: Table 3-5 Controller Function Codes

    Table 3-5 Controller Function Codes (Sheet 1 of 3) Code TITLE DESCRIPTION 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 is Cd01 Suction Modulation fully open.
  • Page 44 Table 3-5 Controller Function Codes (Sheet 2 of 3) Cd22 Compressor State The status of the compressor is displayed (Off, On). Cd23 Evaporator Fan Displays the current evaporator fan state (high, low or off). Cd24 Controlled Not used in this application Atmosphere State Compressor Run This code displays the time remaining until the unit goes into defrost (in tenths of...
  • Page 45 Table 3-5 Controller Function Codes (Sheet 3 of 3) The stagger start offset time is the amount of time that the unit will delay at start- Cd31 Stagger Start Offset up, thus allowing multiple units to stagger their control initiation when all units are Time (Seconds) powered up together.

  • Page 46: Table 3-6 Controller Alarm Indications

    Table 3-6 Controller Alarm Indications (Sheet 1 of 4) Code TITLE DESCRIPTION Alarm 13 is triggered if the control module has lost communication with the ex- pansion module for more than five minutes or communication fails within the first 15 seconds on power up. This alarm triggers failure action C (evaporator fan AL13 Expansion Module only) or D (all machinery off) of Function Code Cd29 if the unit has a perishable set point.
  • Page 47 Table 3-6 Controller Alarm Indications (Sheet 2 of 4) Alarm 25 is triggered by the opening of the condenser motor internal protector and will disable all control units except for the evaporator fans. This alarm will AL25 Condenser Fan Mo- remain active until the motor protector resets.
  • Page 48 Table 3-6 Controller Alarm Indications (Sheet 3 of 4) Alarm 56 is activated by an invalid primary return temperature sensor reading that is outside the range of --50 to +70_C (--58_F to +158_F). If Alarm 56 is acti- vated and the primary return is the control sensor, the secondary return sensor will be used for control if the unit is so equipped.
  • Page 49 Table 3-6 Controller Alarm Indications (Sheet 4 of 4) NOTE If the Controller is configured for four probes without a DataCORDER, the DataCORDER alarms AL70 and AL71 will be processed as Controller alarms AL70 and AL71. Refer to Table 3-10, page 3-26. The Controller performs self-check routines.

  • Page 50: Table 3-7 Controller Pre-Trip Test Codes

    Table 3-7 Controller Pre-Trip Test Codes (Sheet 1 of 4) Code TITLE DESCRIPTION NOTE “Auto” or “Auto1” menu includes the: P0, P1, P2, P3, P4, P5, P6 and rSLts. “Auto2” menu in- cludes P0, P1, P2, P3, P4, P5, P6, P7, P8, P9, P10 and rSLts. All lights and display segments will be energized for five seconds at the start of the pre-trip.
  • Page 51 Table 3-7 Controller Pre-Trip Test Codes (Sheet 2 of 4) 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’...
  • Page 52 Table 3-7 Temperature Controller Pre-Trip Test Codes (Sheet 3 of 4) NOTE P7-0 through P10 are included with the “Auto2” only. NOTE 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), the water P7-0 High Pressure pressure switch is open or the condenser fan switch is open.
  • Page 53 Table 3-7 Controller Pre-Trip Test Codes (Sheet 4 of 4) Setup: If the container temperature is below 7.2_C (45_F), the set point is changed to 7.2_C and a 180 minute timer is started. The control will then be placed in the equivalent of normal heating. If the container temperature is above 7.2_C at the start of the test, then the test proceeds immediately to test 10--1.

  • Page 54: Table 3-8 Datacorder Function Code Assignments

    Table 3-8 DataCORDER Function Code Assignments 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 Temper- dC3-5...

  • Page 55: Table 3-9 Datacorder Pre-Trip Result Records

    Table 3-9 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 56: Table 3-10 Datacorder Alarm Indications

    Table 3-10 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 is a fault with this sensor.
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  • Page 58: Figure 4-1 Autotransformer

    SECTION 4 OPERATION 4.1 INSPECTION (Before Starting) 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 WARNING 230 vac cable and a receptacle to accept the standard Beware of unannounced starting of the 460 vac power plug.

  • Page 59: Figure 4-2 Make Up Air Flow Chart

    Units may be equipped with a Vent Position Sensor Loosen the hex nut and adjust each disk to the required (VPS). The VPS determines the position of the fresh air air flow and tighten hex nut. vent and sends data to the controller display. NOTE The main air slide is in the fully closed position 50HZ...
  • Page 60 fan motor will stop and remain stopped until the CFS 4.7.2 Check Controller Function Codes switch is set to position ”I.” Check and, if required, reset controller Function Codes (Cd27 through Cd39) in accordance with desired CAUTION operating parameters. Refer to paragraph 3.2.2. When condenser water flow is below 11 lpm 4.7.3 Start Temperature Recorder (3 gpm) or when water-cooled operation is...
  • Page 61 The testing begins with access to a pre-trip selection CAUTION menu. The user may have the option of selecting one of When a failure occurs during automatic two automatic tests. These tests will automatically testing the unit will suspend operation perform a series of individual pre--trip tests.

  • Page 62: Figure 4-3 Controller Operation -- Perishable Mode

    secondary controller probes. controller c.The 30 minute timer will be reset at each of the follow- continuously performs probe diagnosis testing which ing conditions: compares the four probes. If the probe diagnosis result 1. At every power up. indicates a probe problem exists, the controller will perform a probe check to identify the probe(s) in error.

  • Page 63: Figure 4-5 Perishable Mode

    FALLING RISING TEMPERATURE TEMPERATURE START UNLOADED, TRANSITION TO COOLING ECONOMIZED ECONOMIZED OPERATION +.20_C SET POINT - -0.20_C AIR CIRCULATION AIR CIRCULATION NOTE: TEMPERATURES INDICATIONS ARE ABOVE OR BELOW SET POINT Figure 4-4 Controller Operation - - Frozen Mode will switch operation from compressor contactor PB to ENERGIZED DE- -ENERGIZED compressor contactor PA.

  • Page 64: Figure 4-6 Perishable Mode Heating

    records the supply air temperature, set point and 4.10.4 Sequence Of operation - - Frozen Mode time. A calculation is then performed to determine Cooling temperature drift from set point over time. a. With supply air temperature above set point and de- creasing, the unit will transition to economized cool- e.

  • Page 65: Figure 4-8 Defrost

    4. The controller probe diagnostic logic determines that When the defrost mode is initiated the controller opens a probe check is necessary based on the tempera- contacts TD, TN and TE (or TV) to de-energize the ture values currently reported by the supply and re- compressor, condenser fan and evaporator fans.
  • Page 66 4.11.1 Emergency Bypass Operation 4.11.2 Emergency Defrost Operation To place the unit in the emergency bypass mode, cut the To place the unit in the emergency defrost (ED) mode of wire tie installed at the switch mounting and place the operation, cut the wire tie installed at the switch EMERGENCY BYPASS switch in the ON position mounting and place the switch in the EMERGENCY...

  • Page 67: Troubleshooting

    SECTION 5 TROUBLESHOOTING REMEDY/ CONDITION POSSIBLE CAUSE REFERENCE SECTION 5.1 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 No power to unit Circuit breaker tripped or OFF Check Autotransformer not connected 4.2.2...

  • Page 68: Unit Runs But Has Insufficient Cooling

    REMEDY/ CONDITION POSSIBLE CAUSE REFERENCE SECTION 5.3 UNIT RUNS BUT HAS INSUFFICIENT COOLING Abnormal pressures Abnormal temperatures 5.15 Abnormal currents 5.16 Controller malfunction Evaporator fan or motor defective 6.15 Shortage of refrigerant Refrigeration System Suction modulation valve lost track of step count Power cycle Suction modulation valve malfunction 6.18...

  • Page 69: Abnormal Pressures (Cooling)

    REMEDY/ CONDITION POSSIBLE CAUSE REFERENCE SECTION 5.6 UNIT WILL NOT DEFROST PROPERLY - - Continued Manual defrost switch defective Replace Will not initiate defrost Will not initiate defrost manually Defrost temperature sensor open 4.10.5 Initiates but relay (DR) drops Low line voltage Heater contactor or coil defective Replace Initiates but does not defrost...

  • Page 70: Controller Malfunction

    REMEDY/ CONDITION POSSIBLE CAUSE REFERENCE SECTION 5.9 CONTROLLER MALFUNCTION Defective Sensor 6.21 Defective wiring Check Fuse (F1, F2, F3) blown Replace Will not control Will not control Stepper motor suction modulation valve circuit malfunction 6.18 Low refrigerant charge 5.10 NO EVAPORATOR AIR FLOW OR RESTRICTED AIR FLOW Frost on coil Evaporator coil blocked Evaporator coil blocked...

  • Page 71: Compressor Operating In Reverse

    REMEDY/ CONDITION POSSIBLE CAUSE REFERENCE SECTION 5.14 COMPRESSOR OPERATING IN REVERSE CAUTION Allowing the scroll compressor to operate in reverse for more than two minutes will result in internal compressor damage. Turn the start- -stop switch OFF immediately. Incorrect wiring of compressor Incorrect wiring of compressor contactor(s) Electrical Electrical...

  • Page 72: Service

    Never use air for leak testing. It has been de- models covered within this manual. The manifold termined that pressurized, mixtures of re- gauge/hose set is available from Carrier Transicold. frigerant and air can undergo combustion (Carrier Transicold P/N 07-00294-00, which includes when exposed to an ignition source.

  • Page 73: Refrigeration System Service

    6.3 REFRIGERATION SYSTEM SERVICE- - UNITS 1. While the compressor is still ON, backseat the high WITH STANDARD PIPING (with Service side service valve. Valves) 2. Midseat both hand valves on the manifold gauge set 6.3.1 Service Connections and allow the pressure in the manifold gauge set to be drawn down to low side pressure.

  • Page 74: Refrigerant Leak Checking

    6.3.3 Refrigerant Leak Checking gauge. (The pump is available from Carrier Trans- icold, P/N 07-00176-11.) WARNING c. If possible, keep the ambient temperature above 15.6_C (60_F) to speed evaporation of moisture. If Never use air for leak testing. It has been the ambient temperature is lower than 15.6_C determined that pressurized, air-rich mix- (60_F), ice might form before moisture removal is...

  • Page 75: Refrigerant Charge

    c. The area between the suction modulating valve and evaporator expansion valve may not be open to the access valves. To ensure evacuation of this area, check that the suction modulating valve is more than 10% open at controller function code Cd01. If re- quired, the suction modulating valve may be opened by use of the controller function code Cd41 valve override control.

  • Page 76: Refrigeration System Service

    Adding Refrigerant to System (Full Charge) CAUTION To prevent trapping liquid refrigerant in the a. Evacuate unit and leave in deep vacuum. (Refer to manifold gauge set be sure set is brought to paragraph 6.3.4 .) suction pressure before disconnecting. b.

  • Page 77: Refrigerant Leak Checking

    Perform repairs as required and then leak test, evac- displacement) and an electronic vacuum gauge. (The uate, charge and reseal unit in accordance with the pump is available from Carrier Transicold, P/N following paragraphs. 07-00176-11.) 6.4.3 Refrigerant Leak Checking...

  • Page 78: Refrigerant Charge

    6.4.5 Refrigerant Charge 6.5 COMPRESSOR Checking the Refrigerant Charge WARNING Make sure power to the unit is OFF and NOTE power plug disconnected before replacing To avoid damage to the earth’s ozone layer, use the compressor. a refrigerant recovery system whenever remov- ing refrigerant.

  • Page 79: Figure 6-7 Compressor Upper Mounting

    Evacuate the unit, refer to section 6.3.4 and skip to step e. SST Washer d. If the unit is fitted with semi--hermetic piping, turn the (Kit Item 10) unit start--stop switch (ST) and unit circuit breaker Resilient Mount (CB--1) OFF. Evacuate the unit, refer to section 6.4.2 (Kit Item 6) and skip to step f.

  • Page 80: Compressor Oil Level

    2 Perform a compressor pump down. CAUTION 3 Remove the oil plug, and drain oil until a level can be Use only Carrier Transicold approved seen in the sight glass. Polyol Ester Oil (POE) - - Mobil 32ST com- 4 Run unit for 20 minutes in cooling mode. Check oil pressor oil with R-134a.

  • Page 81: Replacing High Pressure Switch--Units With Semi--Hermetic Piping(Without Service Valves)

    b. Disconnect wiring from defective switch. The high at a static pressure up to 25 kg/cm@ (350 psig). If a pressure switch is located on the discharge service light is used, light will go out. If an ohmmeter is used, valve and is removed by turning counterclockwise.
  • Page 82 e. Close and secure condenser fan screen guard. NOTE When Oakite compound No. 32 is being used f. Apply power to unit and check fan rotation. If fan for the first time, the local Oakite Technical Ser- motor rotates backward, reverse wire numbers 5 and vice representative should be called in for their suggestions in planning the procedure.

  • Page 83: Figure 6-11 Water Cooled Condenser Cleaning - Gravity Circulation

    WARNING Wear rubber gloves and wash the solution from the skin immediately if accidental con- Fill condenser with clean- tact occurs. Do not allow the solution to ing solution. Do not add splash onto concrete. solution more rapidly than vent can exhaust gases caused by chemical 5.

  • Page 84: Figure 6-12 Thermostatic Expansion Valve Bulb

    6.11 FILTER-DRIER On units equipped with a water-cooled condenser, if the sight glass appears to be flashing or bubbles are constantly 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 85: Figure 6-13 Hermetic Thermostatic Expansion Valve Brazing Procedure

    Braze Rod (’Sil-Phos” = 5.5% Silver, 6% Phosphorus) Copper Tube (Apply heat for 10-15 seconds) Bi-metallic Tube Connection Use of a wet cloth is not neces- (Apply heat for 2-5 seconds) sary due to rapid heat dissipation of the bi--metallic connections Figure 6-13 Hermetic Thermostatic Expansion Valve Brazing Procedure 6.12.2 Valve Replacement a.
  • Page 86 7. If applicable, braze the equalizer connection to the 6.14 ECONOMIZER, UNLOADER AND OIl equalizer line. RETURN SOLENOID VALVE a. Replacing the Coil 8. Check superheat (refer to step 6.12.1). NOTE 6.13 EVAPORATOR COIL AND HEATER The coil may be replaced without removing the ASSEMBLY refrigerant.

  • Page 87: Figure 6-16. Unloader Solenoid Valve

    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. 6.15.1 Replacing The Evaporator Fan Assembly WARNING Always turn OFF the unit circuit breakers (CB-1 &...

  • Page 88: Figure 6-18. Evaporator Fan Assembly

    1 If container is empty, open upper rear panel of the unit. The capacitor may be serviced after discon- necting power plug. 2 If container is full, turn the unit power OFF and dis- connect power plug. Remove the evaporator fan motor access panel.

  • Page 89: Figure 6-19 Suction Modulation Valve (Smv)

    c. Use an ARROW key to scroll to the desired setting, 6.18.1 Precheck Procedure and then press the ENTER key. Selections available a. Check unit for abnormal operation. for each of the tests are provided in the following b. Check charge. If refrigerant is low repair as required table.

  • Page 90: Figure 6-20 Controller Section Of The Control Box

    (item 3, Figure 4-1) and Figure 6-20 Controller Section of the Control Box locked in place. a. Obtain a grounding wrist strap (Carrier Transicold b. Make sure that circuit breakers CB-1 and CB-2 are in part number 07--00--304--00)and a static dissipation the “ON”...
  • Page 91 while loading the software: the Display will blink the message “Pro FAIL” or “bad 12V”. Turn start-stop This test point enables the user to check if the water switch OFF and remove the card.) pressure switch (WP) contact is open or closed. 8.

  • Page 92: Figure 6-21 Sensor Types

    6.21 TEMPERATURE SENSOR SERVICE wires (RRS, RTS, SRS, STS, AMBS, DTS, CPDS OR CPSS as required). Follow those wires to the con- Procedures for service of the Return Recorder, Return nector and using the pins of the plug, measure the Temperature, Supply Recorder, Supply Temperature, resistance.

  • Page 93: Figure 6-23 Supply Sensor Positioning

    i. Solder spliced wires with a 60% tin and 40% lead b. Sensors RRS and RTS Rosincore solder. Reinstall the return sensor as shown in Figure 6-24. For proper placement of the return sensor, be sure to j. Slide heat shrink tubing over splice so that ends of position the enlarged positioning section of the sensor tubing cover both ends of crimp as shown in against the the side of the mounting clamp.

  • Page 94: Figure 6-25. Electronic Partlow Temperature Recorder

    If the optional DataCORDER battery pack is being used, b. Remove the chart retaining nut (item 10), remove and the charge is too low to enable recording during the the used chart, and record today’s date on the old power off period of less than thirty days, the pen tip will chart.
  • Page 95 6.22.3Adjusting the Recorder Stylus a. Press the “Calibration” button (item 7, Figure 6-25) on the bottom of the recorder. The pen tip will drive Proper stylus force upon the chart paper is important. fully down scale, then move upscale to the chart ring Factory adjustment is 113 to 127 grams (4 to 4.5 at 0°C (32°F), and stop.

  • Page 96: Table 6-3 Temperature-Resistance Chart

    Table 6-3 Temperature-Resistance Chart indicated by the recorder differs from 0°C (32°F) by more than 0.6°C (1°F) when compressor cycles off, RESISTANCE TEMPERATURE rezeroing must be performed. (Ohms) ° ° ° ° F ° ° ° ° C Unit Off: 12561.00 --10 --23.3...

  • Page 97: Figure 6-26. Partlow Mechanical Temperature Recorder

    Mechanical Temperature Set Screw Recorder Bulb Pinion Shaft Element Recorder Door Recorder Box Stylus 31 Day Clock Clock Winding Key Mechanism and Platen Assembly Push Rod Figure 6-26. Partlow Mechanical Temperature Recorder CAUTION 6.24.1Battery Check a. Open door and remove chart nut and platen. Recorder element capillary tubing may be bent, but never sharper than 1/2”...

  • Page 98: Figure 6-27. Saginomiya Temperature Recorder

    water, and agitating until mixture reaches 0°C stylus 1 to 2°C (1.8 to 3.6°F) higher than desired (32°F) as shown by a laboratory thermometer. temperature. e. Rotate the adjustment screw counterclockwise to c. When the ice bath temperature reaches 0°C (32°F), as shown by the laboratory thermometer reading, set the stylus about 0.5°C (0.9°F) higher than set compare the temperature indicated by stylus with...

  • Page 99: Composite Control Box Repairs

    This procedure provides instructions for repair of the Refer to Figure 6-29 for the locations of the various Carrier Transicold composite control box. Damage to inserts. the control box may be in the form of a chip or hole, a...

  • Page 100: Table 6-4 Crack, Chip & Hole Repair Kit

    Materials needed: a. Drill a 1/4” hole in the center of each square backing plate. 1. Cut two square pieces of 3 mm thick (1/8 inch) alumi- b. Pass the bolts through the bolts holes in the door num or stainless steel approximately 40 mm (1 5/8”) hinge, then through the control box at the location square.

  • Page 101: Figure 6-29. Insert Location

    Figure 6-29. Insert Location T-292 6-30 Downloaded from ManualsNet.com search engine...

  • Page 102: Figure 6-30. Communications Interface Installation

    6.27 COMMUNICATIONS INTERFACE MODULE c. Remove the circuit breaker panel, with circuit INSTALLATION breaker, from the control box. d. Locate, wires CB21/CIA3, CB22/CIA5 CB23/CIA7 that have been tied back in the wire harness. Remove the protective heat shrink from the ends of the wires. e.

  • Page 103: Table 6-8 R-134A Temperature - Pressure Chart

    Table 6-8 R-134a Temperature - Pressure Chart Temperature Vacuum Temperature Pressure _ _ _ _ F _ _ _ _ C “/hg cm/hg kg/cm@ @ @ @ _ _ _ _ F _ _ _ _ C psig kg/cm@ @ @ @ --40 --40 14.6...
  • Page 104 Downloaded from ManualsNet.com search engine...

  • Page 105: Electrical Wiring Schematic

    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 basic schematic diagram. Figure 7-3 Supplements the basic schematic diagram and provides schematics for the chart recorders. Figure 7-4 Provides the basic wiring diagram for units equipped with single capacitor evaporator fan motors.

  • Page 106: Figure 7-2 Schematic Diagram

    Figure 7-2 SCHEMATIC DIAGRAM T-292 Downloaded from ManualsNet.com search engine...

  • Page 107: Figure 7-3 Schematic Diagram -- Temperature Recorders

    TO DL, TERMINAL C TransFRESH CONTROLLER TO CI, (SEE Figure 7-2) SEE Figure 7-2 SEE Figure 7-2 NOTE: STANDARD CONTROLLER JUMPERS MA3 TO MA7 AND MA9 TO MA11 (SEE Figure 7-2) ARE REMOVED IN THIS APPLICATION ELECTRONIC PARTLOW TEMPERATURE RECORDER (Chart Recorder) See Figure 7-2 See Figure 7-2...

  • Page 108: Figure 7-4 Wiring Diagram, Units W/Single Capacitor Evaporator Fan Motors

    COMBINATION SINGLE SENSOR SENSOR CONFIGURATION (SEE Figure 7-6) ICF MAY BE IN CONTROL BOX NOTE: WHEN CFS IS INSTALLED, WIRE DESTINATIONS CHANGE FROM THE STANDARD. ADDRESSES FOR THE CHANGED DESTINATIONS ARE SHOWN IN BRACKETS “[XXX]”. Figure 7-4 WIRING DIAGRAM, UNITS W/SINGLE CAPACITOR EVAPORATOR FAN MOTOR (Sheet 1 of 2) T-292 Downloaded from ManualsNet.com...
  • Page 109 (ED12) (ED6) (ED9) [CFS2] CFA1 (ED 11) NOTE: WHEN CFS IS INSTALLED, WIRE DESTINATIONS CHANGE FROM THE STANDARD. ADDRESSES FOR THE CHANGED DESTINATIONS ARE SHOWN IN BRACKETS “[XXX]”. Figure 7-4 WIRING DIAGRAM , UNITS W/SINGLE CAPACITOR EVAPORATOR FAN MOTOR (Sheet 2 of 2) T-292 Downloaded from ManualsNet.com...

  • Page 110: Figure 7-5 Wiring Diagram , Units W/Dual Capacitor Evaporator Fan Motors

    (SEE Figure 7-6) ICF MAY BE IN CONTROL BOX NOTE: WHEN CFS IS INSTALLED, WIRE DESTINATIONS CHANGE FROM THE STANDARD. ADDRESSES FOR THE CHANGED DESTINATIONS ARE SHOWN IN BRACKETS “[XXX]”. Figure 7-5 WIRING DIAGRAM , UNITS W/DUAL CAPACITOR EVAPORATOR FAN MOTORS(Sheet 1 of 2) T-292 Downloaded from ManualsNet.com...
  • Page 111 [CFS2] CFA1 NOTE: WHEN CFS IS INSTALLED, WIRE DESTINATIONS CHANGE FROM THE STANDARD. ADDRESSES FOR THE CHANGED DESTINATIONS ARE SHOWN IN BRACKETS “[XXX]”. FIGURE 7- -5 WIRING DIAGRAM , UNITS W/DUAL CAPACITOR EVAPORATOR FAN MOTORS (Sheet 2 of 2) T-292 Downloaded from ManualsNet.com search engine...

  • Page 112: Figure 7-6 Wiring Diagram -- Electronic Partlow Temperature Recorder

    Figure 7-4 Sheet 1 Figure 7-4 Sheet 2 NOTE: STANDARD CONTROLLER JUMPERS MA3 TO MA7 AND MA9 TO MA11 (SEE Figure 7-4, Sheet 1) ARE REMOVED IN THIS APPLICATION Figure 7-6 WIRING DIAGRAM - - Electronic Partlow Temperature Recorder T-292 Downloaded from ManualsNet.com search engine...
  • Page 113 INDEX Emergency Bypass, 4-9 Air Cooled Condenser Section, 2-4 Emergency Defrost, 4-9 Alarm, 3-6, 3-10, 3-11, 3-12, 3-16, 3-26 Evacuation, 6-3, 6-6 Autotransformer, 1-2, 6-19 Evaporator, 6-15 Evaporator Fan, 1-2, 6-16 Evaporator Section, 2-2 Expansion Module, 3-1, 6-19 Battery, 1-1 Expansion Valves, 6-13 Failure Action, 3-4 Capacitors, 6-17...
  • Page 114 Logging Interval, 3-10 Safety and Protective Devices, 2-9 Lower Air, 1-2 Sampling Type, 3-10 Sensor Configuration, 3-8 Sequence Of Operation, 4-5 Service Valves, iv, 6-5 Manifold Gauge Set, 6-1 Solenoid Valves, 6-15 Microporcessor System, 3-1 Starting, 4-3 Modes Of Operation, 3-4 Stopping, 4-3 Suction Modulating Valve, 6-18 Oil, 6-9...

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