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Carrier 69NT40-551-001 Operation And Service

Container refrigeration units
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Container Refrigeration
r
OPERATION AND SERVICE
for
69NT40- -551- -001 TO 199
Container Refrigeration Units
T -- 320 R ev A

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Summary of Contents for Carrier 69NT40-551-001

  • Page 1 Container Refrigeration OPERATION AND SERVICE 69NT40- -551- -001 TO 199 Container Refrigeration Units T -- 320 R ev A...
  • Page 2 OPERATION AND SERVICE MANUAL CONTAINER REFRIGERATION UNIT Models 69NT40- -551- -001 to 199...
  • Page 3 TABLE OF CONTENTS PARAGRAPH NUMBER Page GENERAL SAFETY NOTICES ............Safety-1 FIRST AID .

  • Page 4: Table Of Contents

    TABLE OF CONTENTS - - Continued PARAGRAPH NUMBER Page DESCRIPTION ................GENERAL DESCRIPTION .
  • Page 5 TABLE OF CONTENTS - - Continued PARAGRAPH NUMBER Page DataCORDER ............... . 3.6.1 Description .
  • Page 6 TABLE OF CONTENTS - - Continued PARAGRAPH NUMBER Page 4.10 SEQUENCE OF OPERATION ............4.10.1 Sequence Of operation -- Compressor Phase Sequence .
  • Page 7 TABLE OF CONTENTS - - Continued PARAGRAPH NUMBER Page HIGH PRESSURE SWITCH ............6-10 6.7.1 Replacing High Pressure Switch -- Units with Standard Piping (with Service Valves) .
  • Page 8 TABLE OF CONTENTS - - Continued PARAGRAPH NUMBER Page 6.25 COMPOSITE CONTROL BOX REPAIRS ..........6-24 6.25.1 Introduction .
  • Page 9 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 .
  • Page 10 SAFETY SUMMARY GENERAL SAFETY NOTICES harness from the modules unless you are grounded to the unit frame with a static safe wrist strap. The following general safety notices supplement the In case of electrical fire, open circuit switch and specific warnings and cautions appearing elsewhere in extinguish with CO (never use water).
  • Page 11 SAFETY SUMMARY - - continued Make sure that the unit circuit breaker(s) WARNING (CB-1 & CB-2) and the START-STOP switch (ST) are in the “O” (OFF) position before With power OFF discharge the capacitor connecting to any electrical power source. before disconnecting the circuit wiring.
  • Page 12 (every 60 days) with corrosion inhibiting CRC 3-36a or 6-66 or LPS no. 2. CAUTION CAUTION Use only Carrier Transicold approved Polyol Ester Oil (POE) - - Castrol-Icematic SW20 compressor oil with R-134a. Buy in Recorder element capillary tubing may be quantities of one quart or smaller.
  • Page 13 The transducer readings may is provided by a transformer which steps the supply be viewed on the controller display. power down to 18 and 24 volts, single phase. 1.3.6 USDA The controller is a Carrier Transicold Micro-Link 3 microprocessor. controller will operate...
  • Page 14 1.3.11 Condenser Coil 1.3.20 230 Volt Cable Units equipped with an autotransformer require an The unit is fitted a 4 row coil using 7mm tubing. additional power cable for connection to the 230 volt source. Various power cable and plug designs are 1.3.12 Autotransformer available.

  • Page 15: Description

    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 16: Evaporator Section

    2.1.3 Evaporator Section 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 17: 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 18: Air Cooled 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 19: 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 20: 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 21: Refrigeration System Data

    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 22: Electrical Data

    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 23: 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 IP-CP or HPS will shut down the compressor.

  • Page 24: Refrigeration Circuit

    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 25: Figure 2-7 Refrigeration Circuit Schematic -- Standard Operation

    STANDARD OPERATION WITH RECEIVER EVAPORATOR TXV BULB QUENCH CONDENSER QUENCH BULB ECONOMIZER TXV BULB DISCHARGE ECONOMIZER SERVICE CONNECTION SIGHT GLASS ECONOMIZER ECONOMIZER SERVICE FILTER CONNECTION FUSIBLE PLUG DRIER SUCTION SERVICE CONNECTION MOISTURE INDICATOR LIQUID LINE SERVICE OIL SEPARATOR CONNECTION OIL RETURN SERVICE VALVE RECEIVER COMPRESSOR...

  • Page 26: Figure 2-8 Refrigeration Circuit Schematic -- Economized Operation

    ECONOMIZER ECONOMIZER ECONOMIZER SERVICE CONNECTION OIL SEPARATOR LIQUID LINE RECEIVER SERVICE CON- NECTION LIQUID ECONOMIZER PRESSURE Figure 2-8 Refrigeration Circuit Schematic - - Economized Operation TXV BULB QUENCH TXV SUCTION SERVICE VALVE OIL SEPARATOR RECEIVER LIQUID SUCTION ECONOMIZER PRESSURE Figure 2-9 Refrigeration Circuit Schematic - - Unloaded Operation T-320 2-12...

  • Page 27: Microprocessor

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

  • Page 28: 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 Code Select Accesses function codes. push button switches that act as the user’s interface with the controller.

  • Page 29: Controller

    Mounting Screw Fuses Micro-Link 3 Control/DataCORDER Module Control Circuit Power Connection Connectors Software Programming Port Test Points Battery Pack Figure 3- 4 Control Module 3.1.3 Controller b. Provide default independent readouts of set point and supply or return air temperatures. c.

  • Page 30: Modes Of Operation

    a. Press the CODE SELECT key, then press an arrow Defrost interval time is not accumulated in any mode key until the left window displays the desired code until the defrost termination sensor reads less than number. 10_C (50_F). 3.3.3 Failure Action b.

  • Page 31: Perishable Mode -- Dehumidification

    display indicator that economy mode has been Two timers are activated in the dehumidification mode activated. To check for economy mode, perform a to prevent rapid cycling and consequent contactor wear. manual display of code Cd34. They are: 1. Heater debounce timer (three minutes). In order to achieve economy mode, a perishable set point must be selected prior to activation.

  • Page 32: Frozen Mode -- Conventional

    and the default reading on the display window will be the The alarm philosophy balances the protection of the return air probe reading. refrigeration unit and that of the refrigerated cargo. The action taken when an error is detected always considers When the return air temperature enters the in-range the survival of the cargo.

  • Page 33: Datacorder

    (see 3.6.2 DataCORDER Software Figure 3- 1) which may be used with the Carrier The DataCORDER Software is subdivided into the Transicold Data Reader to down load data. A personal Configuration Software, Operational Software and the computer with Carrier Transicold DataView/DataLine Data Memory.

  • Page 34: Sensor Configuration (Dcf02)

    Changing the listed in Table 3-3. configuration to generic and selecting which data points Table 3-3 DataCORDER Standard Configurations to record may be done using the Carrier Transicold Data Retrieval Program. Standard Description Config.

  • Page 35: 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 36: Logging Interval (Dcf03)

    If the probes are configured to AUTO, they act as a DataReader group. This function is designed to assist users who The Carrier Transicold Data Reader (see Figure 3- 6) is keep their DataCORDER configured for USDA a simple to operate hand held device designed to extract recording, but do not install the probes for every trip.

  • Page 37: Usda Cold Treatment

    In response to the demand to replace fumigation with this environmentally sound process, Carrier has e. To initiate USDA Recording, connect the personal integrated...

  • Page 38: Iso Trip Header

    c. The left display will show “AL#” where # is the alarms 3.6.14 ISO Trip Header number in the queue. The right display will show DataLine provides the user with an interface to “AA##,” if the alarm is active, where ## is the alarm view/modify current settings of the ISO trip header number.

  • Page 39: 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 40 Table 3-5 Controller Function Codes (Sheet 2 of 3) Compressor Run This code displays the time remaining until the unit goes into defrost (in tenths of Cd25 Time Remaining Un- an hour). This value is based on the actual accumulated compressor running til Defrost time.
  • Page 41 Table 3-5 Controller Function Codes (Sheet 3 of 3) The current limit is the maximum current draw allowed on any phase at any time. Limiting the unit’s current reduces the load on the main power supply. This is ac- Cd32 Current Limit complished by reducing the SMV position until current draw is reduced to the set (Amperes) point.

  • Page 42: Table 3-6 Controller Alarm Indications

    Table 3-6 Controller Alarm Indications (Sheet 1 of 4) Code TITLE DESCRIPTION Alarm 14 is triggered if the electronic phase detection system is unable to deter- mine the correct phase relationship. DIRCHECK will be displayed while the rela- tionship is determined. If the system is unable to determine the proper relation- AL14 Phase Sequence ship alarm 14 will remain active.
  • Page 43 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 44 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 45 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 46: 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 47 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 48 Table 3-7 Temperature Controller Pre-Trip Test Codes (Sheet 3 of 4) NOTE P7--0 & P8 are included with “Auto2 & Auto 3” only. P9--0 through P10 are included with “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...
  • Page 49 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 50: 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 51: 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 52: 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.

  • Page 53: Operation

    SECTION 4 OPERATION 4.1 INSPECTION (Before Starting) 2. Plug the 460 vac (yellow) cable into a de-energized 380/460 vac, 3-phase power source. Energize the power source. Place circuit breaker (CB-1) in position WARNING “I” (ON). Close and secure control box door 4.2.2 Connection to190/230 vac Power Beware of unannounced starting of the An autotransformer (Figure 4-1) is required to allow...

  • Page 54: Upper Fresh Air Makeup Vent

    4.3.1 Upper Fresh Air Makeup Vent position (100% position). The closed position is 0% air flow position.The operator may also adjust the opening Two slots and a stop are designed into the disc for air to increase or decrease the air flow volume to meet the flow adjustments.

  • Page 55: Connect Water-Cooled Condenser

    NOTE 4.5 CONNECT REMOTE MONITORING RECEPTACLE The user has 4 minutes to make necessary ad- justments to the vent setting. This time begins If remote monitoring is required, connect remote monitor plug at unit receptacle. When the remote on the initial movement of the sensor. The vent monitor plug is connected to the remote monitoring can be moved to any position within the 4 min- receptacle, the following remote circuits are energized:...

  • Page 56: Complete Inspection

    c. Install new chart making sure chart is under the four To start a pre--trip test, do the following: corner tabs. Lower the stylus until it has made contact with the chart. Close and secure door. NOTE DataCORDER 1. Prior to starting tests, verify that unit voltage (Function Code Cd 07) is within a.

  • Page 57: Observe Unit Operation

    c. TO RUN AN INDIVIDUAL TEST: Scroll through the If 25 or more of 30 readings taken within a 30 minute selections by pressing the UP ARROW or DOWN period are outside of the limit, then a defrost is initi- ARROW keys to display an individual test code.

  • Page 58: Figure 4-3 Controller Operation -- Perishable Mode

    RISING FALLING PULL DOWN TEMPERATURE TEMPERATURE +2.5_C +2.5_C (4.5_F) (4.5_F) START UNLOADED, MODULATED MODULATED TRANSITION TO COOLING COOLING ECONOMIZED UNLOADED UNLOADED OPERATION +.20_C +.20_C SET POINT SET POINT AIR CIRCULATION UNLOADED OPERATION - -0.20_C - -0.20_C AIR CIRCULATION AIR CIRCULATION - -0.5_C - -0.5_C (0.9_F)

  • Page 59: Sequence Of Operation -- Perishable Mode Cooling

    mains illuminated as long as the supply air is within ENERGIZED DE- -ENERGIZED tolerance of set point. CONTROL TRANSFORMER FOR FULL DIAGRAM AND LEGEND, SEE SECTION 7 g. If the supply air temperature increases to 0.2_C POWER TO (0.4_F) above set point and the three minute off time CONTROLLER has elapsed, relays TD, TU and TN are energized to restart the compressor and condenser fan motors in...

  • Page 60: Sequence Of Operation -- Frozen Mode Cooling

    4.10.4 Sequence Of operation - - Frozen Mode 4.10.5 Sequence Of Operation - - Defrost Cooling The defrost cycle may consist of up to three distinct operations. The first is de-icing of the coil, the second is a. With supply air temperature above set point and de- a probe check cycle and the third is snap freeze.

  • Page 61: Emergency Bypass Operation

    Defrost may be initiated any time the defrost 4.10.6 Emergency Bypass Operation temperature sensor reading falls below the controller To place the unit in the emergency bypass mode, cut the defrost termination thermostat set point. Defrost will wire tie installed at the switch mounting and place the terminate when the defrost temperature sensor reading EMERGENCY BYPASS switch in the ON position rises above the defrost termination thermostat set point.

  • Page 62: Troubleshooting

    SECTION 5 TROUBLESHOOTING REMEDY/ REFERENCE CONDITION POSSIBLE CAUSE 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 63: Unit Runs But Has Insufficient Cooling

    REMEDY/ REFERENCE CONDITION POSSIBLE CAUSE 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 64: Abnormal Pressures (Cooling)

    REMEDY/ REFERENCE CONDITION POSSIBLE CAUSE 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 65: Controller Malfunction

    REMEDY/ REFERENCE CONDITION POSSIBLE CAUSE SECTION 5.9 CONTROLLER MALFUNCTION Defective Sensor 6.22 Defective wiring Check 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 66: Compressor Operating In Reverse

    REMEDY/ REFERENCE CONDITION POSSIBLE CAUSE 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 67: Service

    (see Figure 6-2) is required for service of the 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 68: Figure 6-3 Service Valve

    6.3 REFRIGERATION SYSTEM SERVICE- - UNITS b. Removing the Manifold Gauge Set WITH STANDARD PIPING (with Service 1. While the compressor is still ON, backseat the high Valves) side service valve. 6.3.1 Service Connections 2. Midseat both hand valves on the manifold gauge set The compressor suction, compressor discharge, and allow the pressure in the manifold gauge set to compressor economizer, oil return and the liquid line...

  • Page 69: Refrigerant Leak Checking

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

  • Page 70: Figure 6-5. Standard Piping Compressor Service Connections

    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 71: Adding Refrigerant To System (Partial Charge)

    Adding Refrigerant to System (Full Charge) CAUTION a. Evacuate unit and leave in deep vacuum. (Refer to paragraph 6.3.4 .) To prevent trapping liquid refrigerant in the b. Place cylinder of R-134a on scale and connect charg- manifold gauge set be sure set is brought to ing line from cylinder to liquid line valve.
  • Page 72 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 73: Compressor

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

  • Page 74: Figure 6-7 Compressor Upper Mounting

    c. If the unit is fitted with standard piping and the com- pressor is not operational, turn the unit start--stop switch (ST) and unit circuit breaker (CB--1) OFF. SST Washer Evacuate the unit, refer to section 6.3.4 and skip to (Kit Item 10) step e.

  • Page 75: Compressor Oil Level

    Removing Oil from the Compressor - - Units with Standard Piping (with Service Valves) 1 If the oil level is above the sight glass, oil must be Use only Carrier Transicold approved removed from the compressor. Polyol Ester Oil (POE) - - Mobil 32ST com- pressor oil with R-134a.

  • Page 76: High Pressure Switch

    6.7 HIGH PRESSURE SWITCH 1. Cylinder Valve 6.7.1 Replacing High Pressure Switch - - Units with and Gauge Standard Piping (with Service Valves) 2. Pressure Regulator a. Turn unit start-stop switch OFF. Frontseat the suc- 3. Nitrogen Cylinder tion, discharge, economizer and oil return service 4.

  • Page 77: Water Cooled Condenser Cleaning

    coil, and discharges horizontally through the front of the cap on water-cooled condenser inlet tube (replaces unit. To replace motor assembly: tubing flare nut). De-scale tubing if necessary. a. Open condenser fan screen guard. What You Will Need: b. Loosen two square head set screws on fan. (Thread 1.

  • Page 78: Filter-Drier

    WARNING Fill condenser with clean- ing solution. Do not add Oakite No. 32 is an acid. Be sure that the solution more rapidly than acid is slowly added to the water. DO NOT vent can exhaust gases PUT WATER INTO THE ACID - - this will caused by chemical cause spattering and excessive heat.

  • Page 79: Expansion Valves

    b. To Replace Filter-Drier 6.12.1 Checking Superheat. 1. Pump down the unit (refer to paragraph 6.3.2). Eva- cuate if unit is not equipped with service valves (Re- fer to paragraph 6.4.4). Then replace filter-drier. NOTE 2. Evacuate the low side in accordance with paragraph Proper superheat measurement for the evapo- 6.3.4.

  • Page 80: Valve Replacement

    6.12.2 Valve Replacement 1. Clean the suction line with sandpaper before instal- ling bulb to ensure proper heat transfer. Apply ther- a. Removing the Expansion Valve mal grease to the indentation in the suction line. 2. Strap the thermal bulb to the suction line, making NOTES sure bulb is placed firmly into the suction line.

  • Page 81: Economizer, Unloader And Oil Return Solenoid Valve

    e. Lift the bent end of the heater (with the opposite end down and away from coil). Move heater to the side enough to clear the heater end support and remove. 6.14 ECONOMIZER, UNLOADER AND OIl RETURN SOLENOID VALVE a. Replacing the Coil NOTE The coil may be replaced without removing the refrigerant.

  • Page 82: Replacing The Evaporator Fan Assembly

    mkg (70 inch-pounds) Apply power momentarily to 6.15.1 Replacing The Evaporator Fan Assembly check for proper fan rotation (refer to paragraph 2.3). If fan spins backward, then motor wiring or motor is WARNING defective. f. Replace access panel making sure that panel does not leak.

  • Page 83: Removing The Capacitor

    6.16.2 Removing The Capacitor A fourth selection is also provided to enter a time period of up to three minutes, during which the override(s) are active. If the timer is active, valve override selections will WARNING take place immediately. If the timer is not active, changes will not take place for a few seconds after the timer is started.

  • Page 84: Suction Modulation Valve

    NEW valve powerhead assembly, torque nut b. Checking with SMA-12 portable stepper drive tester to 35 ft-lb. The SMA-12 portable stepper drive tester (Carrier For units with standard piping: Evacuate low side, Transicold P/N 07-00375-00) is a battery operated open all service valves and leak test unit.

  • Page 85: Autotransformer

    (HPS) is open or closed. requires handling and removal of a module. a. Obtain a grounding wrist strap (Carrier Transicold This test point enables the user to check if the water part number 07--00--304--00)and a static dissipation pressure switch (WP) contact is open or closed.

  • Page 86: Controller Programming Procedure

    TP 8 When complete the controller will reset and power up normally. This test point enables the user to check power to the 12 Wait for default display, setpoint on the left, and con- suction modulator valve. trol temperature on the right. TP 9 13.Confirm software is correct using keypad code se- This test point is the chassis (unit frame) ground...

  • Page 87: Vent Position Sensor Service

    aging has been designed to protect the module from d. Refer to paragraph 6.20 and remove controller to gain both physical and electrostatic discharge damage access to the sensor plugs. during storage and transit. Table 6-2 Sensor Temperature/Resistance Chart b.Installation: (+/- -.002%) Install the module by reversing the removal steps.

  • Page 88: Sensor Re--Installation

    NOTE Sensor 40 mm (1 1/2 inch) The P5 Pre-Trip test must be run to inactivate probe alarms (refer to paragraph 4.8). 6.22.3 Sensor Re- -Installation a. Sensors STS and SRS 6.3 mm (1/4 inch) To properly position a supply sensor, the sensor must be fully inserted into the probe holder.
  • Page 89 6.23 ELECTRONIC PARTLOW TEMPERATURE a. Lift the stylus (item 5, Figure 6-25) by grasping the RECORDER arm near the base, and pull the arm away from the chart until it snaps into its retracted position. The microprocessor based temperature recorder is b.

  • Page 90: Maintenance Of Painted Surfaces

    Press the calibration button and the pen will position 6.25.1 Introduction itself to the correct temperature reading. This procedure provides instructions for repair of the Carrier Transicold composite control box. Damage to Electronic Partlow Recorder the control box may be in the form of a chip or hole, a...

  • Page 91: Door Hinge Inserts

    The material can be cut to suit and riveted in place. An adhesive sealant must be used to make the repair watertight. The adhesive sealant (Sikaflex 221) is included in Crack Repair Kit Carrier Transicold part number...

  • Page 92: Table 6-3 Crack, Chip & Hole Repair Kit

    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 6-5 Drill Information Item Insert part number Drill size and depth 34- 06231- 01 10.3 mm x 17.8 mm deep (.404 in.

  • Page 93: Figure 6-27. Insert Location

    Figure 6-27. Insert Location T-320 6-27...

  • Page 94: Communications Interface Module Installation

    6.26 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 95: Table 6-7 R-134A Temperature - Pressure Chart

    Table 6-7 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 96: Electrical Wiring Schematic

    SECTION 7 ELECTRICAL WIRING SCHEMATICS 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 TransFRESH ,and Emergency Bypass.

  • Page 97: Figure 7-2 Schematic Diagram

    Figure 7-2 SCHEMATIC DIAGRAM T-320...

  • Page 98: Figure 7-3 Schematic Diagram -- Transfresh And Emergency Bypass

    SEE FIGURE SEE FIGURE 7--2 7--2 TO KB7 TransFRESH CONTROLLER To QC1 To F3A To F3B To F3B CONTROLLER Emergency Bypass Figure 7-3 SCHEMATIC DIAGRAM - - TransFRESH and Emergency Bypass T-320...

  • Page 99: Figure 7-4 Wiring Diagram

    KE2 [BM1A] KE3 [BM1B] KE4 [BM2A] KE5 [BM2B] [BMA2] NOTE: WHEN CFS OR BM ARE INSTALLED, WIRE DESTINATIONS CHANGE . ADDRESSES FOR THE CHANGED DESTINATIONS ARE SHOWN IN BRACKETS “[XXX]”. Figure 7-4 WIRING DIAGRAM (Sheet 1 of 2) T-320...
  • Page 100 SMVD CFA1 [BM2B] SMVC [BM1B] SMVB [BM2A] SMVA [BM1A] 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 (Sheet 2 of 2) T-320...

  • Page 101: Figure 7-5 Schematic Diagram, Wiring Diagram-- Electronic Partlow Recorder

    NOTE: STANDARD CONTROLLER JUMPERS: MA3 TO MA7 AND MA9 TO MA11 (SEE Figure 7-2 ) ARE REMOVED IN THIS APPLICATION NOTE: STANDARD CONTROLLER JUMPERS: MA3 TO MA7 AND MA9 TO MA11 (SEE Figure 7-2) ARE REMOVED IN THIS APPLICATION Figure 7-5 SCHEMATIC DIAGRAM, WIRING DIAGRAM- - Electronic Partlow Recorder T-320...
  • Page 102 INDEX Air Cooled Condenser Section, 2-4 Failure Action, 3-4 Alarm, 3-6, 3-10, 3-11, 3-17, 3-26 Filter--Drier, 6-12 Arctic Mode, 3-4 Fresh Air Makeup, 2-1, 4-1 Autotransformer, 6-18 Frozen Mode, 4-7 Frozen Mode -- Conventional, 3-6 Frozen Mode -- Economy, 3-6 Function Code, 3-13, 3-14, 3-24 Bulb Mode, 3-5 General Description, 2-1...
  • Page 103 Safety and Protective Devices, 2-9 Oil Level , 6-9 Sampling Type, 3-10 Sensor Configuration, 3-8 Operational Software, 3-3, 3-7 Sequence Of operation, 4-6 Service Valves, 6-1 Starting, 4-3 Stopping, 4-3 Suction Modulating Valve, 6-16 Painted Surfaces, 6-25 Perishable Mode, 4-6 Temperature Control, 3-4, 3-6 Perishable Mode -- Conventional, 3-4 Temperature Recorder, 4-3, 6-23...
  • Page 104 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 2004 Carrier Corporation D Printed in U. S. A. 12/04...

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