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Carrier 69NT40-561-201 Operation & Service Manual

Evergreen container refrigeration units
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Container Refrigeration
OPERATION & SERVICE MANUAL
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69NT40-561-201
Evergreen Container Refrigeration Units
T−364 Rev A

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Summary of Contents for Carrier 69NT40-561-201

  • Page 1 Container Refrigeration OPERATION & SERVICE MANUAL 69NT40-561-201 Evergreen Container Refrigeration Units T−364 Rev A...
  • Page 3 OPERATION AND SERVICE MANUAL CONTAINER REFRIGERATION UNIT Model 69NT40−561−201 Carrier Corporation, 2021 Printed in U. S. A. March 2021...
  • Page 4 TABLE OF CONTENTS PARAGRAPH NUMBER Page GENERAL SAFETY NOTICES ............Safety−1 FIRST AID .
  • Page 5 TABLE OF CONTENTS (Continued) PARAGRAPH NUMBER Page REFRIGERATION SYSTEM DATA ............2−6 ELECTRICAL DATA .
  • Page 6 TABLE OF CONTENTS (Continued) PARAGRAPH NUMBER Page CONTROLLER ALARMS ............. . 3−11 PRE−TRIP DIAGNOSTICS .
  • Page 7 TABLE OF CONTENTS (Continued) PARAGRAPH NUMBER Page TROUBLESHOOTING ............... . . 5−1 UNIT WILL NOT START OR STARTS THEN STOPS .
  • Page 8 TABLE OF CONTENTS (Continued) PARAGRAPH NUMBER Page 6.12 FILTER DRIER ............... 6−8 6.13 EVAPORATOR COIL &...

  • Page 9: Table Of Contents

    LIST OF ILLUSTRATIONS FIGURE NUMBER Page Figure 2−1 Refrigeration Unit − Front Section ........... . 2−1 Figure 2−2 Evaporator Section .
  • Page 10 LIST OF TABLES TABLE NUMBER Page Table 2−1 Safety and Protective Devices ............2−8 Table 3−1 Keypad Function .
  • Page 12 SAFETY SUMMARY GENERAL SAFETY NOTICES SPECIFIC WARNING AND CAUTION STATEMENTS To help identify the label hazards on the unit and explain The following general safety notices supplement the level of awareness each one carries, an explanation specific warnings and cautions appearing elsewhere in is given with the appropriate consequences: this manual.
  • Page 13 WARNING CAUTION Make sure power to the unit is OFF and Charge receiver according to nameplate power plug disconnected before replacing specifications to ensure optimal unit per- the compressor. formance. WARNING CAUTION Before disassembly of the compressor, be sure to relieve the internal pressure very Do not remove wire harnesses from con- carefully by slightly loosening the cou- troller modules unless you are grounded to...
  • Page 14 CAUTION CAUTION scroll compressor achieves When a failure occurs during automatic testing, the unit will suspend operation suction pressure very quickly. Do not use awaiting operator intervention. the compressor to evacuate the system below psig. Never operate CAUTION compressor with the suction or discharge service valves closed (frontseated).
  • Page 16 18 and 24 volts, single phase. 1.3.8 Plate Set The controller is a Carrier Transicold Micro−Link 3 microprocessor. The controller operates automatically Each unit is equipped with a tethered set of wiring to select cooling, holding or heating as required to schematics and wiring diagram plates.
  • Page 17 1.3.14 Communications Interface Module 1.3.20 Upper Air (Fresh Air Make Up) The unit is fitted with a communications interface The unit is fitted with an upper fresh air makeup module. The communications interface module is a assembly. The fresh air makeup assembly is equipped slave module, which allows communication with a with a vent positioning sensor (VPS).

  • Page 18: Figure 2−1 Refrigeration Unit − Front Section

    SECTION 2 DESCRIPTION 2.1 GENERAL DESCRIPTION 2.1.2 Fresh Air Makeup Vent 2.1.1 Refrigeration Unit − Front Section The function of the upper makeup air vent is to provide ventilation for commodities that require fresh air circula- The unit is designed so that the majority of the compon- tion.

  • Page 19: Figure 2−2 Evaporator Section

    2.1.3 Evaporator Section Most evaporator components are accessible by remov- ing the upper rear panel (as shown in the illustration) or The evaporator section is shown below. The evaporator by removing the evaporator fan access panels (see fans circulate air through the container by pulling it in the Figure 2−1).

  • Page 20: Figure 2−3 Compressor Section

    2.1.4 Compressor Section pressure transducer (EPT) and the suction pressure transducer (SPT). The compressor section includes the compressor, The supply temperature sensor, supply recorder sensor digital unloader valve (DUV), high pressure switch, and ambient sensor are located to the left of the com- discharge pressure transducer (DPT), evaporator pressor.

  • Page 21: Figure 2−4 Air−Cooled Condenser Section

    2.1.5 Air−Cooled Condenser Section economizer expansion valve, economizer solenoid valve (ESV), and sight glass/moisture indicator. The air−cooled condenser section consists of the condenser fan, condenser coil, receiver, liquid line The condenser fan pulls air from around the coil and dis- service valve, filter drier, fusible plug, economizer, charges it horizontally through the condenser fan grille.

  • Page 22: Figure 2−5 Control Box Section

    2.1.6 Control Box Section 2.1.7 Communications Interface Module The communications interface module is a slave The control box (Figure 2−5) includes: the manual module which allows communication between the operation switches, circuit breaker (CB−1), refrigeration unit and a ship system master central compressor, fan and heater contactors, control power monitoring station.
  • Page 23 2.2 REFRIGERATION SYSTEM DATA Model Number ZMD26KVE−TFD−272 Weight (With Oil) 42.9 kg (95 lb) a. Compressor/Motor Assembly Approved Oil Uniqema Emkarate RL−32−3MAF Oil Charge 1774 ml (60 ounces) Verify at −18_C b. Electronic Expansion Valve (0F) container box 4.4 to 6.7_C (8 to 12_F) Superheat (Evaporator) temperature Verify at −18_C...
  • Page 24 2.3 ELECTRICAL DATA a. Circuit Breaker CB−1 (25 amp) Trips at 29 amps b. Compressor Full Load Amps (FLA) 13 amps @ 460 VAC Motor 380 VAC, Three Phase, 460 VAC, Three Phase, Nominal Supply 50 Hz 60 Hz Full Load Amps .71 amps .72 amps c.

  • Page 25: Table 2−1 Safety And Protective Devices

    Section 2.3 − ELECTRICAL DATA−CONTINUED Orange wire Power Red wire Output Brown wire Ground Input voltage 5 VDC Output voltage 0 to 3.3 VDC k. 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 Unit components are protected from damage by safety...
  • Page 26 2.5 REFRIGERATION CIRCUIT 2.5.2 Economized Operation 2.5.1 Standard Operation In the economized mode, (see Figure 2−7) the frozen Starting at the compressor, (see Figure 2−6), upper and pull down capacity of the unit is increased by sub- schematic) the suction gas is compressed to a higher cooling the liquid refrigerant entering the electronic ex- pressure and temperature.

  • Page 27: Figure 2−6 Refrigeration Circuit Schematic − Standard Operation

    STANDARD OPERATION COMBO ETS1 AND 2 EVAPORATOR ELECTRONIC EXPANSION VALVE SIGHT CONDENSER GLASS FILTER DRIER LIQUID LEVEL/ MOISTURE LIQUID LINE INDICATOR SERVICE VALVE RECEIVER DIGITAL UNLOADER DISCHARGE ECON. TXV VALVE TEMPERATURE SENSING BULB SENSOR ECONOMIZER SOLENOID VALVE DISCHARGE DISCHARGE ECONOMIZER SERVICE PRESSURE VALVE...

  • Page 28: Figure 2−7 Refrigeration Circuit Schematic − Economized Operation

    ECONOMIZED OPERATION COMBO ETS1 AND ETS2 EVAPORATOR ELECTRONIC EXPANSION VALVE CONDENSER SIGHT GLASS FILTER DRIER LIQUID LEVEL/ MOISTURE INDICATOR LIQUID LINE SERVICE VALVE RECEIVER DIGITAL DISCHARGE UNLOADER ECON. TXV TEMPERATURE VALVE SENSING BULB SENSOR ECONOMIZER SOLENOID VALVE DISCHARGE DISCHARGE PRESSURE SERVICE TRANSDUCER VALVE...

  • Page 30: Figure 3−1 Temperature Control System

    SECTION 3 MICROPROCESSOR 3.1 TEMPERATURE CONTROL The DataCORDER software functions to record unit operating parameters cargo temperature MICROPROCESSOR SYSTEM parameters for future retrieval. Coverage of the temperature control software begins with paragraph 3.2. The temperature control Micro-Link 3 microprocessor Coverage of the DataCORDER software is provided in system (see Figure 3−1) consists of a keypad, display paragraph 3.7.

  • Page 31: Figure 3−2 Keypad

    3.1.1 Keypad Table 3−1 Keypad Function FUNCTION The keypad (Figure 3−2) is mounted on control box door. The keypad consists of eleven push button CODE SELECT Accesses function codes. switches that act as the user’s interface with the control- Displays Pre-trip selection menu. ler.

  • Page 32: Figure 3−3 Display Module

    3.2 CONTROLLER SOFTWARE The controller software is a custom designed program that is subdivided into configuration software and opera- COOL HEAT DEFROST IN RANGE ALARM SUPPLY RETURN tional software. The controller software performs the fol- lowing functions: a. Control supply or return air temperature to required limits, provide modulated refrigeration operation, SETPOINT/Code AIR TEMPERATURE/Data...
  • Page 33 3.2.2 Operational Software (Cd Function Codes) During Bump Start, the EEV will close. Relays TS, TQ, TN, TE, and TV will be de-energized (opened). The res- ult of this action will close the ESV and shut all fans off. The operational software is the actual operation The compressor will start for 1 second, then pause for programming of the controller which activates or five seconds.

  • Page 34: Figure 3−5 Controller Operation - Perishable Mode

    Pull Down Perishable Mode (Only Applicable to Perishable Mode) Controller Set Point ABOVE −10°C (+14°F) Controller Set Point ABOVE −10°C (+14°F) +2.5°C (+4.5°F) Cooling, Cooling, Unloaded Economized Í Í Í Í Í Í Í Í Í Í Í +.20°C Í Í Í Í Í Í Í Í Í Í Í Point Cooling, Í...

  • Page 35: Figure 3−6 Perishable Mode Cooling

    Two timers are activated during dehumidification to pre- b. When supply air temperature decreases to a prede- vent rapid cycling and consequent contactor wear: termined tolerance above set point (Cd30), the green IN RANGE light is illuminated. 1. Heater debounce timer (three minutes) - The heater debounce timer is started whenever the heater c.

  • Page 36: Figure 3−7 Perishable Mode Heating

    3.3.10 Perishable Mode Heating - Sequence of 3.3.11 Perishable Mode - Trim Heat Operation If the system capacity has been decreased to the lowest a. If the supply air temperature decreases 0.5_C allowable capacity and conditions exist that warrant max- (0.9_F) below set point, the system enters the heating imum temperature stability the controller will pulse the HR mode.

  • Page 37: Figure 3−8 Controller Operation - Frozen Mode

    Frozen Mode Controller Set Point at or BELOW −10°C (+14°F), +2.5°C (+4.5°F) Cooling, Economized +.20°C Í Í Í Í Í Í Í Í Í Í Í Set Point Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í −.20°C Í...

  • Page 38: Figure 3−9 Frozen Mode

    3.3.18 Automatic Defrost ENERGIZED DE-ENERGIZED In perishable mode, perishable-pull down mode, or frozen mode, automatic defrost starts with an initial de- 24 VOLT POWER frost set to three hours and then adjusts the interval to the next defrost based on the accumulation of ice on the evaporator coil.
  • Page 39 2. The Defrost Interval Timer reaches or exceeds the When defrost is initiated, the controller closes the EEV, Defrost Interval. opens contacts TC, TN and TE (or TV) to de-energize the compressor, condenser fan and evaporator fans. 3. During Pretrip, defrost may occur during tests P-8, The blue COOL light is also de-energized.
  • Page 40 3.3.21 Defrost Related Settings 3.4.5 Compressor Low Pressure Protection The probe check is a test that compares temperature If the suction pressure low limit is triggered, the DUV will sensor readings to determine if any sensors have failed. energize to raise the suction pressure. If probe check fails, the system will run for eight minutes 3.4.6 Perishable Mode...
  • Page 41 Operational Software, Configuration Software, and the interrogation connections (see Figure 3−1) which may Data Memory. be used with the Carrier Transicold DataReader to a. Operational Software download data. A personal computer with Carrier Trans- The Operational Software reads and interprets inputs icold DataLINE software installed may also be used to for use by the Configuration Software.

  • Page 42: Table 3−2 Datacorder Configuration Variables

    2 byte format. configuration to generic and selecting which data points The short requires less memory and records tempera- to record may be done using the Carrier Transicold Data ture with variable resolutions depending on temperature Retrieval Program.

  • Page 43: Figure 3−11 Standard Configuration Download Report

    Raw Data Report for ABC1234567 May 31, 2007 to Jun 04, 2007 System Configuration at the Time of Interrogation: Interrogated On May 05, 2007 Extracted by DataLINE Rev 1.0.0 Controller Software: 5327 Controller Serial #: 04163552 Bill of Lading #: 1 Origin: Origin Date: Destination:...

  • Page 44: Table 3−3 Datacorder Standard Configurations

    Table 3−3 DataCORDER Standard Configurations 2. Controller DC battery pack power: If a battery pack is installed, the DataCORDER will power up for communication when an interrogation cable is Standard plugged into an interrogation receptacle. Description Config. 3. External DC battery pack power: A 12 volt battery 2 sensors pack may also be plugged into the back of the 2 thermistor inputs (supply &...
  • Page 45 In response to the demand to replace fumigation with Place in pulp of product five feet from this environmentally sound process, Carrier has inte- the end of the load for 40 foot containers grated Cold Treatment capability into its microprocessor...
  • Page 46 3.7.13 DataCORDER Alarms 4. Press the ALARM LIST key. “AL” will show on the left display and “‐‐‐‐‐” on the right display when there are The alarm display is an independent DataCORDER no alarms in the list. function. If an operating parameter is outside of the ex- pected range or a component does not return the cor- 5.

  • Page 47: Table 3−4 Controller Configuration Variables

    3.8 CONTROLLER CONFIGURATION VARIABLES Table 3−4 Controller Configuration Variables CONFIGURATION TITLE SETTING NUMBER CnF02 Evaporator Fan Speed dS (Dual) CnF03 Control Temperature Sensors FOUr CnF04 Enable Dehumidification CnF08 Evaporator Motor Type CnF09 Refrigerant Type r134a CnF11 Defrost “Off” Selection noOFF CnF15 Enable Discharge Temperature Sensor CnF16...

  • Page 48: Table 3−5 Controller Function Codes

    This code indicates the dash number of the model for which the Controller is con- figured (i.e., if the unit is a 69NT40-561-201, the display will show “61201”). To display controller configuration database information, press ENTER. Values in Cd20 Config/Model # “CFYYMMDD”...
  • Page 49 Table 3−5 Controller Function Codes (Sheet 2 of 6) Cd21 Capacity Mode The mode of operation is displayed (Unloaded - Standard - Economized). Cd22 Compressor State The status of the compressor is displayed (OFF, On). Cd23 Evaporator Fan Displays the current evaporator fan state (OFF, LOW, HIGH). Compressor Run This code displays the time remaining until the unit goes into defrost (in tenths of Cd25...
  • Page 50 Table 3−5 Controller Function Codes (Sheet 3 of 6) The stagger start offset time is the amount of time that the unit will delay at start-up, thus allowing multiple units to stagger their control initiation when all Stagger Start Offset Cd31 Time (Seconds) units are powered up together.
  • Page 51 Table 3−5 Controller Function Codes (Sheet 4 of 6) Display Only Function − Cd44 is a display only function. Cd44 (NOT USED) ---- Configurable Functions − Cd45 through Cd48 are user-selectable functions. The operator can change the value of these functions to meet the operational needs of the container. Cd45 (NOT USED) Selects the airflow units to be displayed by Cd45 if configured for Vent Position Sensor or displayed by “USER/FLO”...
  • Page 52 Table 3−5 Controller Function Codes (Sheet 5 of 6) ASC-mode: Cd53 increments of (1 day)_(1hr), Display: default “0_0 “ “done” mm-dd this will be display is ASC has completed “ASC” value “On” “OFF” Display /Select: default “OFF“ “nSC” value “1 - 6“ (This is the value “n” for the subsequent entries). “SP (n-1)”...
  • Page 53 Table 3−5 Controller Function Codes (Sheet 6 of 6) Configurable Functions − Cd59 through Cd61 are user-selectable functions. The operator can change the value of these functions to meet the operational needs of the container. Cd59 allows operation of the pump down logic control. The display will flash between “STArT PdN”...

  • Page 54: Figure 3−12 Alarm Troubleshooting Sequence

    Start Troubleshooting Check Power Refer to CONNECT POWER Unit does Supply self test? Section 4.2 Refer to CONNECT POWER Check Power Evaporator Supply fans start? Section 4.2 Correct Install Latest Refer to CONTROLLER SOFTWARE software Software Section 3.2 version? Revision Unit Load correct Refer to Configuration Software (Variables)

  • Page 55: Table 3−6 Controller Alarm Indications

    3.10 CONTROLLER ALARM INDICATIONS Table 3−6 Controller Alarm Indications (Sheet 1 of 8) Alarm Code Cause Components Troubleshooting Corrective Actions AL03 Superheat has Electronic Check the operation of the Replace EEV if remained below Expansion Valve defective. EEV using Cd41. Loss of 1.66_C (3_F) degrees (EEV)
  • Page 56 Table 3−6 Controller Alarm Indications (Sheet 2 of 8) Alarm Code Cause Components Troubleshooting Corrective Actions AL16 Compressor current Current Sensor Compare Cd3 to actual Replace current sensor draw over measured current at wire if defective. Compressor calculated maximum T1-T2 or T3 going to the Current High for 10 minutes.
  • Page 57 Table 3−6 Controller Alarm Indications (Sheet 3 of 8) Alarm Code Cause Components Troubleshooting Corrective Actions AL18 Discharge pressure is Restrictions in the Ensure Liquid Line Service Open Liquid Line Ser- over the maximum for refrigeration Valve is fully open. vice Valve as needed.
  • Page 58 Table 3−6 Controller Alarm Indications (Sheet 4 of 8) Alarm Code Cause Components Troubleshooting Corrective Actions AL21 One of the 18 VAC System Sensors Check system sensors for Replace defective controller fuses short to ground. sensor(s) Control Circuit (F1/F2) is open. Refer Fuse (F1/F2) Wiring Check wiring for short to...
  • Page 59 Table 3−6 Controller Alarm Indications (Sheet 5 of 8) Alarm Code Cause Components Troubleshooting Corrective Actions AL28 Suction pressure too Power cycle the unit. Resetting the unit may low for normal correct problem, monitor Low Suction operation. the unit. Pressure Suction Pressure Confirm accurate...
  • Page 60 Table 3−6 Controller Alarm Indications (Sheet 6 of 8) Alarm Code Cause Components Troubleshooting Corrective Actions AL56 Invalid Return Return Perform Pre-trip P5: If P5 passes, no further Temperature Sensor Temperature action is required. Primary (RTS) reading. Sensor (RTS) Return Sensor If P5 fails, replace the (RTS) defective sensor as...
  • Page 61 Table 3−6 Controller Alarm Indications (Sheet 7 of 8) Alarm Code Cause Components Troubleshooting Corrective Actions AL65 Compressor Compressor Confirm accurate Replace DPT if Discharge Transducer Discharge pressure readings, refer to defective. Discharge is out of range. Transducer (DPT) MANIFOLD GAUGE SET Pressure Section 6.2.
  • Page 62 Table 3−6 Controller Alarm Indications (Sheet 8 of 8) 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 3−42. The controller performs self-check routines.

  • Page 63: Table 3−7 Controller Pre-Trip Test Codes

    3.11 CONTROLLER PRE−TRIP TEST CODES Table 3−7 Controller Pre-trip Test Codes (Sheet 1 of 6) 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. “Auto3” menu includes P0, P1, P2, P3, P4, P5, P6, P7 and P8.
  • Page 64 Table 3−7 Controller Pre-trip Test Codes (Sheet 2 of 6) P4 Tests - High Speed Evaporator Fans Current Draw: High speed evaporator fans are turned on, then off. Current draw must fall within specified range and measured current changes must exceed specified ratios. No other system components will change state during this test.
  • Page 65 Table 3−7 Controller Pre-trip Test Codes (Sheet 3 of 6) This is a Pass/Fail test of the primary evaporator temperature sensor (ETS1) and Primary .vs Sec- secondary evaporator temperature sensor (ETS2). ondary Evaporator P5-7 Temperature Test passes if secondary evaporator temperature sensor (ETS2) is within +/- 0.5_C Sensor Test of the primary evaporator temperature sensor (ETS1).
  • Page 66 Table 3−7 Controller Pre-trip Test Codes (Sheet 4 of 6) NOTE P6-6 through P6-10 are conducted by changing status of each valve and comparing suction pressure change and/or compressor current change with predetermined values. Tests will cause compressor and condenser fans to cycle on and off as needed to generate the pressure required for individual Pre-trip sub tests.
  • Page 67 Table 3−7 Controller Pre-trip Test Codes (Sheet 5 of 6) P8 Tests - Perishable Mode Tests: Pretrip tests P7-0 and P7-1 must have passed or have been skipped for these tests to execute. If the control temperature is below 15.6_C (60_F), the setpoint is changed to 15.6_C (60_F), and a 180 Minute timer is started.
  • Page 68 Table 3−7 Controller Pre-trip Test Codes (Sheet 6 of 6) P9 Test - DTT Close and Open Test: The DTT in this control is not a physical device, with actual metallic con- tacts, it is a software function that acts similar to a thermostat. Using various temperature inputs, the DTT func- tion determines whether a thermostat mounted on the Evaporator Coil would have OPEN or CLOSED contacts.

  • Page 69: Table 3−8 Datacorder Function Code Assignments

    Table 3−8 DataCORDER Function Code Assignments NOTE Inapplicable Functions Display “‐‐‐‐‐” To Access: Press ALT. MODE key then CODE SELECT 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 70: 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 71: Table 3−10 Datacorder Alarm Indications

    Table 3−10 DataCORDER Alarm Indications To Access: Press ALT. MODE key then ALARM LIST 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 Recorder Supply a fault with this sensor.
  • Page 72 SECTION 4 OPERATION 4.1 INSPECTION (Before Loading) 4.2 CONNECT POWER WARNING WARNING Do not attempt to remove power plug(s) be- fore turning OFF start−stop switch (ST), unit circuit breaker(s) and external power source. Beware of unannounced starting of the evaporator and condenser fans. The unit may cycle the fans and compressor unex- WARNING pectedly as control requirements dictate.

  • Page 73: Figure 4−1 Upper Fresh Air Make Up Flow Chart

    Manual changes greater than 5 CMH (3 CFM) FLOW remaining in the new position for at least four minutes (CMH) 50HZ NOTE The user has four minutes to make necessary TBAR adjustments to the vent setting. This time calcu- 1 1/2” lation begins on the initial movement of the TBAR sensor.
  • Page 74 4.5.2 Stopping the Unit Pre−trip diagnosis provides automatic testing of the unit components using internal measurements comparison logic. The program will provide a “PASS” or To stop the unit, place the START−STOP switch in posi- “FAIL” display to indicate test results. tion “0”...
  • Page 75 Once all Pre-test activity is completed, dehumidification CAUTION and bulb mode must be reactivated manually if required. When a failure occurs during automatic 4.8 PROBE DIAGNOSTICS testing, the unit will suspend operation awaiting operator intervention. A complete temperature probe check is performed dur- ing the P5 Pre−trip test.
  • Page 76 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 Circuit breaker tripped or OFF Check Circuit breaker OFF or defective Check Control transformer defective...
  • Page 77 REMEDY/ REFERENCE CONDITION POSSIBLE CAUSE SECTION 5.3 UNIT RUNS BUT HAS INSUFFICIENT COOLING Abnormal pressures Abnormal temperatures 5.13 Abnormal currents 5.14 Controller malfunction Evaporator fan or motor defective 6.14 Refrigeration system Compressor service valves or liquid line shutoff valve Open valves partially closed completely Frost on coil...
  • Page 78 REMEDY/ REFERENCE CONDITION POSSIBLE CAUSE SECTION 5.6 UNIT WILL NOT DEFROST PROPERLY (Continued) Heater contactor or coil defective Replace Initiates but does not defrost Heater(s) burned out 6.13 Frequent defrost Wet load Normal 5.7 ABNORMAL PRESSURES Condenser coil dirty 6.10 Condenser fan rotating backwards 6.11 Condenser fan inoperative...
  • Page 79 REMEDY/ REFERENCE CONDITION POSSIBLE CAUSE SECTION 5.10 NO EVAPORATOR AIR FLOW OR RESTRICTED AIR FLOW Frost on coil Evaporator coil blocked Dirty coil 6.13 Evaporator fan motor internal protector open 6.14 Evaporator fan motor(s) defective 6.14 No or partial evaporator air flow Evaporator fan(s) loose or defective 6.14 Evaporator fan contactor defective...
  • Page 80 REMEDY/ REFERENCE CONDITION POSSIBLE CAUSE SECTION 5.12 COMPRESSOR OPERATING IN REVERSE NOTE The compressor may start in reverse for up to 10 seconds to determine correct phase rotation if required for phase detection. CAUTION Allowing the scroll compressor to operate in reverse for more than two minutes will result in internal compressor damage.

  • Page 82: Figure 6−1 Manifold Gauge Set

    EXPLOSION HAZARD Failure to follow this els covered within this manual. The manifold gauge/ WARNING can result in death, serious hose set is available from Carrier Transicold. (Carrier personal injury and / or property damage. Transicold part number 07-00294-00, which includes Never use air or gas mixtures containing items 1 through 6, Figure 6−2.)

  • Page 83: Figure 6−3 Service Valve

    6.3 SERVICE CONNECTIONS CAUTION The compressor suction, compressor discharge, and the liquid line service valves (see Figure 6−3) are pro- To prevent trapping liquid refrigerant in the vided with a double seat and an access valve which en- manifold gauge set be sure set is brought to ables servicing of the compressor and refrigerant lines.

  • Page 84: Figure 6−4 Refrigeration System Service Connections

    The recommended method to evacuate and dehy- volume displacement) and an electronic vacuum drate the system is to connect evacuation hoses at gauge. The pump is available from Carrier the compressor suction and liquid line service valve Transicold, P/N 07-00176-11. The micron gauge is (see Figure 6−4).
  • Page 85 c. Test the evacuation setup for leaks by backseating 6.7.1 Checking the Refrigerant Charge the unit service valves and drawing a deep vacuum with the vacuum pump and gauge valves open. Shut NOTE off the pump and check to see if the vacuum holds. Use a refrigerant recovery system whenever Repair leaks if necessary.

  • Page 86: Figure 6−5 Compressor Kit

    To repair the unit, remove the faulty compressor and replace with an approved Carrier compressor. If the return of the compressor is not required, follow local waste collection and recycling regulations in discarding the compressor.

  • Page 87: Figure 6−6 High Pressure Switch Testing

    o. Place the new Teflon seals at the compressor suc- 6.9 HIGH PRESSURE SWITCH tion and discharge ports as well as the O−rings at the 6.9.1 Checking High Pressure Switch unloader and economizer line connection ports. Hand tighten all four connections. WARNING p.
  • Page 88 6.10 CONDENSER COIL h. Cut the top and bottom drain lines midway between the side support bracket and the first cable tie, approx The condenser coil consists of a series of parallel cop- 150mm (6”) from the side support bracket. per tubes expanded into copper fins and formed into a i.
  • Page 89 g. Slide the top and bottom drain lines back into place CAUTION through the side support bracket. h. Using the two supplied straight connectors and con- Take necessary steps (place plywood over tact adhesive reconnect the drain lines. coil or use sling on motor) to prevent motor from falling into condenser coil.

  • Page 90: Figure 6−7 Heater Arrangement

    6.13 EVAPORATOR COIL & HEATER ASSEMBLY j. Leak check connections. Evacuate and add refriger- ant charge. The evaporator section, including the evaporator coil, 6.13.2 Evaporator Heater Replacement should be cleaned regularly. The preferred cleaning fluid is fresh water or steam. Another recommended cleaner The heaters are wired back to a terminal block.

  • Page 91: Figure 6−8 Evaporator Fan Assembly

    In the past, it was a common prac- Analyses Carrier Transicold environmental tice to insert a screwdriver between the fan blades specialists have identified the white powder as consisting predominantly of aluminum oxide.

  • Page 92: Figure 6−9 Electronic Expansion Valve

    2. Turn unit power off and remove power from the unit. This cleaner is available from the Carrier Transicold Performance Parts Group (PPG) and can be ordered 3. Remove EEV coil.

  • Page 93: Figure 6−10 Coil View Of Economizer Solenoid Valve (Esv)

    6.17 ECONOMIZER SOLENOID VALVE 5. Place the top coil o−ring on the coil mounting screw and secure the coil to the valve using a torque− wrench. Torque the screw to 25 in−lbs. 6. Connect coil wires using butt−splices and heat− shrink tubing.

  • Page 94: Figure 6−12 View Of Digital Unloader Valve (Duv) Assembly

    6. VALVE REMOVAL: The preferred method of remov- 5. Loosen the nuts attaching the DUV to the top of the ing the valve is to cut the connection between the compressor. brazed section and the valve, using a small tube cut- 6.

  • Page 95: Table 6−1 Valve Override Control Displays

    6.20 VALVE OVERRIDE CONTROLS a. Press the CODE SELECT key then press an AR- ROW key until Cd41 is displayed in the left window. Controller function code Cd41 is a configurable code The right window will display a controller communica- that allows timed operation of the automatic valves for tions code.

  • Page 96: Figure 6−13 Controller Section Of The Control Box

    TP 9 − The chassis (unit frame) ground connection. a. Obtain a grounding wrist strap (Carrier Transicold P/N 07-00304-00) and a static dissipation mat (Carri- er Transicold P/N 07-00277-00). The wrist strap, TP 10 −...
  • Page 97 6.21.3 Programming Procedure for Software Ver- CArd.” Turn start-stop switch OFF and remove the sions 5354 and Greater & With Updated card.) Menu Option (menu0115.ml) 7. Press the ENTER key on the keypad. 8. The display module will go blank briefly and then dis- NOTE play “551 00”, based on the operational software Units must be loaded with software version...
  • Page 98 3. Values will be entered from right to left. Press the UP c. Slide out and remove old battery and bracket. (See or DOWN ARROW key to increase or decrease the Figure 3−4, Item 8.) values. ENTER will enter the information for the cur- d.

  • Page 99: Table 6−2 Sensor Resistance

    Table 6−2 Sensor Resistance Sensors AMBS, DTS, ETS, RRS, RTS, SRS, STS °F Ohms °F Ohms °F Ohms °F Ohms −40 −40 336,500 −7.8 49,060 24.4 10,250 56.7 2,809 −38.9 −38 312,600 −6.7 46,230 25.6 9,760 57.8 2,697 −37.8 −36 290,600 −5.6 43,580...

  • Page 100: Table 6−3 Sensor Resistance (Cpds)

    Table 6−3 Sensor Resistance (CPDS) °F Ohms °F Ohms °F Ohms 2,889,600 100.4 49,656 240.8 3,759 *36.4 2,532,872 104.0 45,812 244.4 3,550 *32.8 2,225,078 107.6 42,294 248.0 3,354 *29.2 1,957,446 111.2 39,078 251.6 3,173 1,724,386 114.8 36,145 255.2 3,004 *25.6 *22.0 1,522,200 118.4...

  • Page 101: Figure 6−14 Sensor Types

    6.22.2 Sensor Replacement WARNING É É É É É É É É É Always turn OFF the unit circuit breaker (CB-1) and disconnect main power supply É É É É É É É É É before removing electrical parts. a. Turn unit power OFF and disconnect power supply. 1.

  • Page 102: Figure 6−16 Supply Sensor Positioning

    6.22.3 Sensors STS and SRS Re-Installation To properly position a unit supply sensor (Supply Tem- perature Sensor STS or Supply Recorder Sensor SRS), the sensor must be fully inserted into the probe holder. This positioning will give the sensor the optimum amount of exposure to the supply air stream, and will al- low the Controller to operate correctly.

  • Page 103: Figure 6−19 Compressor Discharge Temperature Sensor

    6.22.7 Sensor, CPDS Re-Installation 4. Place a bead of the silicone sealer supplied with the replacement sensor around the sensor sealing ring. Insert sensor into the well with the leads parallel to To replace the Compressor Discharge Temperature the suction fitting. Sensor, see Figure 6−19: 5.

  • Page 104: Figure 6−20 Communications Interface Installation

    If the unit is not factory provi- The refrigeration unit is protected by a special paint sioned, a provision wiring kit (Carrier Transicold part system against the corrosive atmosphere in which it number 76-00685-00) must be installed. Installation in- normally operates.

  • Page 105: Table 6−4 R-134A Temperature - Pressure Chart

    Table 6−4 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 26.1 180.0 1.84 1.80 12.3 41.6 31.25 0.42 27.8 191.7 1.95 1.92 32.8 24.64 0.33 29.6 204.1 2.08 2.04...

  • Page 106: Table 6−5 Recommended Bolt Torque Values

    Table 6−5 Recommended Bolt Torque Values BOLT DIA. THREADS TORQUE FREE SPINNING 5.2 in-lbs 9.6 in-lbs 20 in-lbs 23 in-lbs 75 in-lbs 5/16 11 ft-lbs 20 ft-lbs 7/16 31 ft-lbs 43 ft-lbs 9/16 57 ft-lbs 92 ft-lbs 124 ft-lbs NONFREE SPINNING (LOCKNUTS ETC.) 82.5 in-lbs 5/16 145.2 in-lbs...

  • Page 107: Figure 7−1 Legend − Standard Unit Configuration

    SECTION 7 ELECTRICAL WIRING SCHEMATICS 7.1 INTRODUCTION This section contains the Electrical Schematics and Wiring Diagrams. LEGEND SYMBOL DESCRIPTION SYMBOL DESCRIPTION AMBS AMBIENT SENSOR (C−22) HUMIDITY SENSOR (OPTIONAL) (F−23) CONTROLLER (L−21) HEAT TERMINATION THERMOSTAT (E−15) CIRCUIT BREAKER − 460 VOLT (J−1) INTERROGATOR CONNECTOR FRONT (T−23) OPTIONAL CIRCUIT BREAKER −...

  • Page 108: Figure 7−2 Schematic Diagram

    Based on Drawing 62−11753 Figure 7−2 SCHEMATIC DIAGRAM T-364 7−2...

  • Page 109: Figure 7−3 Unit Wiring Diagram

    Based on Drawing 62−11753 Figure 7−3 UNIT WIRING DIAGRAM (Sheet 1 of 2) T-364 7−3...
  • Page 110 Based on Drawing 62−11753 Figure 7−3 UNIT WIRING DIAGRAM (Sheet 2 of 2) T-364 7−4...
  • Page 112 INDEX Control Box, 1−1 Control Box Description, 2−5 Adjusting Fresh Air Makeup, 4−1 Controller, 1−2, 3−3 Air−Cooled Condenser Description, 2−4 CONTROLLER ALARM INDICATIONS, 3−26 Alarm Code, 3−26 Controller Alarms, 3−11 Alarm Indications, 3−26 Controller Alarm Codes, 3−26 Alarm Troubleshooting Sequence, 3−25 Controller Configuration Codes, 3−18 Aluminum oxide, 6−10 Controller Function Codes, 3−19...
  • Page 113 INDEX (Continued) High Pressure Switch Service, 6−6 High Temperature, Low Pressure Protection, 3−11 Economized Operation, Refrigeration Circuit, 2−9 Economizer Expansion Valve Service, 6−12 Economizer Solenoid Valve Service, 6−12 EEV Replacement, 6−12 Inspection, 4−1 Electrical Data, 2−7 Interrogator, 1−1 Electronic Expansion Valve Description, 2−9 Introduction, 1−1 Electronic Expansion Valve Service, 6−11 ISO Trip Header, 3−17...
  • Page 114 INDEX (Continued) Plate Set, 1−1 System Pressure Regulation, 3−11 Pre−Trip Diagnosis, 4−3 PRE−TRIP DIAGNOSTICS, 3−12 Pre−Trip Test Codes , 3−34 Temperature Readout, 1−1 Pressure Readout, 1−1 Temperature Recorder−Starting Instructions, 4−3 PROBE DIAGNOSTICS, 4−4 Temperature Sensor Service, 6−17 Programming Procedure for Software, 6−16 Torque Values, 6−25 Protective Modes of Operation, 3−11 Troubleshooting, 5−1...
  • Page 117 Carrier Transicold Division, Carrier Corporation P.O. Box 4805 Syracuse, NY 13221 USA https://www.carrier.com/container-refrigeration...

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