Carrier 69NT40-561-399 Operation And Service Manual
  1. Manuals
  2. Brands
  3. Carrier Manuals
  4. Refrigerator
  5. 69NT40-561-399
  6. Operation and service manual

Carrier 69NT40-561-399 Operation And Service Manual

Container refrigeration units
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Container Refrigeration
OPERATIONS AND SERVICE
MANUAL
For
69NT40-561-300 to 399
Container Refrigeration Units
T-365 Rev C

Advertisement

Table of Contents
loading

Related Manuals for Carrier 69NT40-561-399

Summary of Contents for Carrier 69NT40-561-399

  • Page 1 Container Refrigeration OPERATIONS AND SERVICE MANUAL 69NT40-561-300 to 399 Container Refrigeration Units T-365 Rev C...
  • Page 3 OPERATIONS AND SERVICE MANUAL 69NT40-561-300 to 399 © Carrier Corporation, 2017 Printed in U. S. A. May 2017...
  • Page 5 TABLE OF CONTENTS PARAGRAPH NUMBER Page SAFETY SUMMARY ..............1–1 GENERAL SAFETY NOTICES .

  • Page 6: Table Of Contents

    3.1.2 Fresh Air Makeup Vent ........... . . 3–1 3.1.3 Evaporator Section .
  • Page 7 4.4.4 Compressor High Temperature Protection ........4–14 4.4.5 Compressor Low Pressure Protection...
  • Page 8 PRE−TRIP DIAGNOSIS ............5–7 PROBE DIAGNOSTICS .
  • Page 9 7.13.2 Evaporator Heater Replacement ..........7–17 7.14 EVAPORATOR FAN AND MOTOR ASSEMBLY .
  • Page 11 LIST OF ILLUSTRATIONS FIGURE NUMBER Page Figure 3.1 Refrigeration Unit - Front Section ..........3–1 Figure 3.2 Evaporator Section .
  • Page 12 Figure 7.22 Sensor Types ............. . . 7–37 Figure 7.23 Sensor and Cable Splice .
  • Page 13 LIST OF TABLES TABLE NUMBER Page Table 3–1 Refrigeration System Data ............3–6 Table 3–2 Safety and Protective Devices .

  • Page 15: Safety Summary

    SECTION 1 SAFETY SUMMARY GENERAL SAFETY NOTICES Installation and servicing of refrigeration equipment can be hazardous due to system pressures and electrical com- ponents. Only trained and qualified service personnel should install, repair, or service refrigeration equipment. When working on refrigeration equipment, observe all potential Danger, Warning and Caution hazards, including those shown below and on hazard labels attached to the unit.
  • Page 16 CAUTION Means to warn against potential hazard or unsafe practice that could result in personal injury, product or property damage. The statements listed below are applicable to the refrigeration unit and appear elsewhere in this manual. These recommended precautions must be understood and applied during operation and maintenance of the equipment covered herein.
  • Page 17 WARNING Oakite No. 32 is an acid. Be sure that the acid is slowly added to the water. DO NOT PUT WATER INTO THE ACID - this will cause spattering and excessive heat. WARNING Wear rubber gloves and wash the solution from the skin immediately if accidental contact occurs.
  • Page 18 CAUTION When a failure occurs during automatic testing, the unit will suspend operation awaiting oper- ator intervention. CAUTION When Pre-Trip test Auto 2 runs to completion without being interrupted, the unit will terminate pre-trip and display “Auto 2” “end.” The unit will suspend operation until the user depresses the ENTER key! CAUTION Allowing the scroll compressor to operate in reverse for more than two minutes will result in...

  • Page 19: Introduction

    INTRODUCTION INTRODUCTION The Carrier Transicold model 69NT40-561-300 through 399 series units are of lightweight aluminum frame con- struction, designed to fit in the front of a container and serve as the container’s front wall. They are one piece, self-contained, all electric units, which include cooling and heating systems to provide precise temperature control.

  • Page 20: Plate Set

    2.3.9 Plate Set Each unit is equipped with a tethered set of wiring schematics and wiring diagram plates. The plate sets are ordered using a seven-digit base part number and a two-digit dash number. OPTION DESCRIPTIONS Various options may be factory or field equipped to the base unit. These options are described in the following sub- paragraphs.

  • Page 21: Back Panels

    2.4.12 Back Panels Aluminum back panels may have access doors and/or hinge mounting. 2.4.13 460 Volt Cable Various power cable and plug designs are available for the main 460 volt supply. The plug options tailor the cables to each customer’s requirements. 2.4.14 230 Volt Cable Units equipped with an autotransformer require an additional power cable for connection to the 230 volt source.

  • Page 23: Fresh Air Makeup Vent

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

  • Page 24: Evaporator Section

    3.1.3 Evaporator Section The evaporator section is shown below. The evaporator fans circulate air through the container by pulling it in the top of the unit, directing it through the evaporator coil where it is heated or cooled, and discharging it at the bottom. If the unit is provisioned for XtendFRESH or equipped with eAutoFresh, system components are mounted in addi- tion to the standard refrigeration unit components.

  • Page 25: Compressor Section

    3.1.4 Compressor Section The compressor section includes the compressor, digital loader valve (DLV), digital unloader valve (DUV), high pressure switch (HPS), discharge pressure transducer (DPT), evaporator pressure transducer (EPT) and the suc- tion pressure transducer (SPT). The supply temperature sensor and supply recorder sensor are located to the left of the compressor. Figure 3.3 Compressor Section 1.

  • Page 26: Air-Cooled Condenser Section

    3.1.5 Air-Cooled Condenser Section The air-cooled condenser section consists of the condenser fan, condenser coil, receiver, liquid line service valve, filter drier, fusible plug, economizer, economizer expansion valve, economizer solenoid valve (ESV), and sight glass/moisture indicator. The condenser fan pulls air from around the coil and discharges it horizontally through the condenser fan grille. Figure 3.4 Air-Cooled Condenser Section locations 1.

  • Page 27: Control Box Section

    3.1.6 Control Box Section The control box (Figure 3.5) includes: the manual operation switches, circuit breaker (CB-1), compressor, fan and heater contactors, control power transformer, fuses, key pad, display module, current sensor module, controller module and the communications interface module. 3.1.7 Communications Interface Module The communications interface module is a slave module which allows communication between the refrigeration...

  • Page 28: Refrigeration System Data

    REFRIGERATION SYSTEM DATA Table 3–1 Refrigeration System Data Model Number ZMD26K2E-TFD-274 Weight (With Oil) 42.9 kg (95 lb) Compressor/Motor Assembly Approved Oil Uniqema Emkarate RL-32-3MAF Oil Charge 1774 ml (60 ounces) Verify at -18°C (0°F) Electronic Expansion Valve container box tempera- 4.4 to 6.7°C (8 to 12°F) Superheat (Evaporator) ture...

  • Page 29: Electrical System Data

    ELECTRICAL SYSTEM DATA CB-1 (25 amp) Trips at 29 amps Circuit Breaker CB-2 (50 amp) Trips at 62.5 amps CB-3 (70 amp) Trips at 87.5 amps Compressor Motor Full Load Amps (FLA) 13 amps @ 460 VAC 380 VAC/3 PH/50 Hz 460 VAC/3 PH/60 Hz Full Load...

  • Page 30: Safety And Protective Devices

    DUV Coil 24VAC Nominal Resistance 15.5 ohms +/- 5% 68°F (20°C) Coil Feed to Ground (Gray 47 ohms Wire) EEV Nominal Resistance Coil Feed to Coil Feed 95 ohms Orange wire Power Red wire Output Brown wire Ground Input voltage 5 VDC Output voltage 0 to 3.3 VDC...

  • Page 31: Refrigeration Circuit

    Table 3–2 Safety and Protective Devices (Continued) UNSAFE CONDITION DEVICE DEVICE SETTING Fusible Plug - Used on the Receiver 99°C = (210°F) Abnormal pressures/temperatures in Rupture Disc - Used on the Water- the high refrigerant side 35 kg/cm = (500 psig) Cooled Condenser Abnormally high discharge pressure High Pressure Switch (HPS)

  • Page 32: Figure 3.6 Refrigeration Circuit Schematic - Standard Operation

    Figure 3.6 Refrigeration Circuit Schematic - Standard Operation STANDARD OPERATION COMBO ETS1 AND 2 EVAPORATOR ELECTRONIC EXPANSION VALVE SIGHT GLASS CONDENSER FILTER DRIER DISCHARGE SERVICE VALVE LIQUID LEVEL/ MOISTURE DISCHARGE LIQUID LINE INDICATOR TEMPERATURE SERVICE VALVE RECEIVER SENSOR DIGITAL UNLOADER DIGITAL VALVE LOADER...

  • Page 33: Figure 3.7 Refrigeration Circuit Schematic - Economized Operation

    Figure 3.7 Refrigeration Circuit Schematic - Economized Operation ECONOMIZED OPERATION COMBO ETS1 AND ETS2 EVAPORATOR ELECTRONIC EXPANSION VALVE SIGHT GLASS CONDENSER FILTER DRIER DISCHARGE SERVICE LIQUID LEVEL/ VALVE MOISTURE LIQUID LINE DISCHARGE INDICATOR SERVICE VALVE TEMPERATURE RECEIVER SENSOR DIGITAL UNLOADER DIGITAL VALVE LOADER...

  • Page 35: Microprocessor

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

  • Page 36: Key Pad

    4.1.1 Key Pad The key pad (Figure 4.2) is mounted on the control box door. The key pad consists of eleven push button switches that act as the user’s interface with the controller. Descriptions of the key pad switch functions are provided in Table 4–1.

  • Page 37: Display Module

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

  • Page 38: Controller Software

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

  • Page 39: Controller Sequence And Modes Of Operation

    To access the function codes, perform the following: 1. Press the CODE SELECT key, then press an arrow key until the left window displays the desired code number. 2. The right window will display the selected function code value for five seconds before returning to normal display mode.

  • Page 40: Perishable Heating

    4.3.6 Perishable Heating When it is necessary to raise the control temperature, the system will enter Perishable Heating Mode. If the tem- perature drops to 0.5°C (0.9°F) below set point, the unit will transition to Perishable Heating Mode, and the heaters will be energized.

  • Page 41: Perishable Dehumidification - Bulb Mode

    If the previously mentioned conditions are true for at least one hour, the evaporator fans will switch from high speed to low speed. Evaporator fan speed will then switch every hour, as long as the 4 conditions are met (see Bulb Mode, Section 4.3.9 for different evaporator fan speed options).

  • Page 42: Perishable Mode Cooling - Sequence Of Operation

    At the start of each cooling or heating cycle, the evaporator fans will run in high speed for three minutes. They will then be switched to low speed any time the supply air temperature is within +/- 0.2°C (0.36°F) of the set point and the return air temperature is less than or equal to the supply air temperature +3°C (5.4°F).

  • Page 43: Perishable Mode Heating - Sequence Of Operation

    f. If the supply air temperature increases to 0.2°C (0.36°F) above set point, contacts TC and TN close to restart the compressor and condenser fan motors in standard steady state operation. The white COOL light is also illuminated. g. If the supply air increases more than 2.5°C (4.5°F) above set point temperature, contacts TS will close to energize and open the ESV, placing the unit in pull down mode.

  • Page 44: Frozen Steady State

    When CnF26 (Heat Lockout Temperature) is set to -10°C, frozen mode is active with set points below -10°C (+14°F). When CnF26 is set to -5°C, frozen mode is active with set points below -5°C (+23°F). When the system is in Frozen Mode, the highest priority is given to bringing the container down to set point, the system will remain in economized operation.

  • Page 45: Frozen Economy Mode

    4.3.18 Frozen Economy Mode In order to activate Frozen Economy Mode, a frozen set point temperature must be selected, and Cd34 (Economy Mode) set to “ON.” When economy mode is active, the system will perform normal frozen mode operations except that the entire refrigeration system, excluding the controller, will be turned off when the control temperature is less than or equal to the set point -2°C (4°F).

  • Page 46: Defrost

    4.3.20 Defrost Defrost is initiated to remove ice buildup from the evaporator coil which can obstruct air flow and reduce the cooling capacity of the unit. The defrost cycle may consist of up to three distinct operations depending upon the reason for the defrost or model number configuration.

  • Page 47: Defrost Related Parameters

    6. Delta T Logic: If the difference between return and supply air temperature (Delta T) becomes too great indi- cating possible reduced airflow over the evaporator coil caused by ice buildup requiring a defrost. a. In Perishable Pull Down - Delta T increases to greater than 12°C, and 90 minutes of compressor run time have been recorded.

  • Page 48: Protection Modes Of Operation

    Defrost Timer If CnF23 is configured to “SAv” (save), then the value of the defrost interval timer will be saved at power down and restored at power up. This option prevents short power interruptions from resetting an almost expired defrost inter- val, and possibly delaying a needed defrost cycle.

  • Page 49: Perishable Mode - System Pressure Regulation

    4.4.6 Perishable Mode - System Pressure Regulation In perishable mode, system pressures may need to be regulated at ambient temperatures of 20°C (68°F) and below. Once below this ambient temperature, the condenser fan may cycle on and off based on limits imposed for discharge pressure.

  • Page 50: Pre-Trip Diagnostics

    4.8.1 Description Carrier Transicold “DataCORDER” software is integrated into the controller and serves to eliminate the tempera- ture recorder and paper chart. DataCORDER functions may be accessed by keypad selections and viewed on the display module. The unit is also fitted with interrogation connections (see Figure 4.1) which may be used with the...
  • Page 51 DataCORDER settings: • Configuration Software • Operational Software • Data Storage Memory • Real Time Clock (with internal battery backup) • Six Thermistor Inputs • Interrogation Connections • Power Supply (battery pack) DataCORDER functions: a. Logs data at 15, 30, 60 or 120 minute intervals and stores two years of data (based on one hour interval). b.

  • Page 52: Datacorder Software

    A list of data points available for recording follows. Changing the configu- ration to generic and selecting which data points to record may be done using the Carrier Transicold Data Retrieval Program.

  • Page 53: Logging Interval (Dcf03)

    9. Evaporator expansion valve percentage 10.Discrete outputs (Bit mapped - require special handling if used) 11. Discrete inputs (Bit mapped - require special handling if used) 12.Ambient temperature sensor (AMBS) 13.Evaporator temperature sensor (ETS) 14.Compressor discharge sensor (CPDS) 15.Return temperature sensor (RTS) 16.Supply temperature sensor (STS) 17.Defrost temperature sensor (DTS) 18.Discharge pressure transducer (DPT)

  • Page 54: Figure 4.11 Standard Configuration Download Report

    Figure 4.11 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:...

  • Page 55: Sampling Type (Dcf05 & Dcf06)

    Standard Configuration Description 2 sensors 2 thermistor inputs (supply & return) (dCF02=2) 5 sensors 2 thermistor inputs (supply & return) (dCF02=5) 3 USDA thermistor inputs 6 sensors 2 thermistor inputs (supply & return) (dCF02=6) 3 USDA thermistor inputs 1 humidity input 9 sensors Not Applicable (dCF02=9)

  • Page 56: Pre-Trip Data Recording

    In response to the demand to replace fumigation with this environmentally sound process, Carrier has inte- grated Cold Treatment capability into its microprocessor system. These units have the ability to maintain supply air temperature within one quarter degree Celsius of set point and record minute changes in product tempera- ture within the DataCORDER memory, thus meeting USDA criteria.

  • Page 57: Usda Cold Treatment Procedure

    a. USDA Recording A special type of recording is used for USDA cold treatment purposes. Cold treatment recording requires three remote temperature probes be placed at prescribed locations in the cargo. Provision is made to con- nect these probes to the DataCORDER via receptacles located at the rear left-hand side of the unit. Four or five receptacles are provided.

  • Page 58: Iso Trip Header

    To display alarm codes: 1. While in the Default Display mode, press the ALT. MODE & ALARM LIST keys. This accesses the Data- CORDER Alarm List Display Mode, which displays any alarms stored in the alarm queue. 2. To scroll to the end of the alarm list, press the UP ARROW. Depressing the DOWN ARROW key will scroll the list backward.

  • Page 59: Table 4-2 Controller Configuration Variables

    Table 4–2 Controller Configuration Variables CONFIG. # TITLE DEFAULT OPTION CnF02 Evaporator Fan Speed dS (Dual) SS (Single) CnF03 Control Temperature Sensors FOUr duAL CnF04 Enable Dehumidification CnF06 Variable Speed Condenser Fan CnF08 Evaporator Motor Type CnF09 Refrigerant Selection r134a r744 CnF11 Defrost “Off”...

  • Page 60: 4.10 Controller Function Codes

    Table 4–2 Controller Configuration Variables (Continued) CONFIG. # TITLE DEFAULT OPTION CnF64 Enable Fan Pulsing Logic 0-in 1-out CnF66 High Speed Evaporator Fan Option 0-off 1-on CnF67 Air Heaters 0-out 1-in CnF68 Enable Default Pulsing Temperature 0-out 1-in CnF70 Enable XtendFRESH Logic 0-out 1-in CnF71...
  • Page 61 Table 4–3 Controller Function Codes (Continued) CODE # TITLE DESCRIPTION Cd12 Compressor Suction Pres- Reading for evaporator pressure transducer (EPT) is shown on the left sure display; Press ENTER at Cd12 to show reading for compressor suc- tion port pressure on right display. Cd14 Compressor Discharge Pres- Compressor discharges pressure transducer reading is displayed.
  • Page 62 Table 4–3 Controller Function Codes (Continued) CODE # TITLE DESCRIPTION Configurable Functions Function codes Cd27 through Cd37 are user-selectable functions. The operator can change the value of these functions to meet the operational needs of the container. Cd27 Defrost Interval (Hours or Au- This is the desired period of time between defrost cycles.
  • Page 63 Table 4–3 Controller Function Codes (Continued) CODE # TITLE DESCRIPTION Cd30 IIn-Range Tolerance The in-range tolerance will determine the temperature band around the set point which will be designated as in-range. For normal tem- perature control, control temperature is considered in range if it is with- in setpoint in-range Tolerance.
  • Page 64 Table 4–3 Controller Function Codes (Continued) CODE # TITLE DESCRIPTION Cd35 Bulb Mode The current state of the bulb mode option, “-----”, nOr, or bULb. (Re- placed by Cd48 if CnF50, Enhanced Bulb Mode, is active.) Bulb mode is an extension of dehumidification control (Cd33). If dehumidification (CnF04) is set to “Off,”...
  • Page 65 Table 4–3 Controller Function Codes (Continued) CODE # TITLE DESCRIPTION Cd41 Valve Override SERVICE FUNCTION: This code is used for troubleshooting, and al- lows manual positioning of the economizer solenoid valve, electronic expansion valve, and digital unloader valve. Provides readings such as: Percent Capacity, EEV, Capacity Mode, LIV and DUV.
  • Page 66 Table 4–3 Controller Function Codes (Continued) CODE # TITLE DESCRIPTION Cd43 XtendFresh Mode Cd43 is a user selectable mode of operation that allows the opening and closing of an air vent door and CO scrubber unit. These selection modes are as follows: OFF - Vent will remain closed and scrubber will remain off.
  • Page 67 Table 4–3 Controller Function Codes (Continued) CODE # TITLE DESCRIPTION Cd48 Dehumidification / Bulb Car- Initially Cd48 will display current dehumidification-mode; bUlb - bulb go Mode Parameter Selec- cargo mode, dEhUM - normal dehumidification, or OFF - off. This dis- tion play is steady.
  • Page 68 Table 4–3 Controller Function Codes (Continued) CODE # TITLE DESCRIPTION Configurable Functions - Cd50 through Cd53 are user-selectable functions. The operator can change the value of these functions to meet the operational needs of the container. Cd50 CCPC Disabled ”OFF” = disabled. ”On”...
  • Page 69 Table 4–3 Controller Function Codes (Continued) CODE # TITLE DESCRIPTION Cd53 Automatic Set point Change ASC-mode: Mode Parameter Selection 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”...
  • Page 70 Table 4–3 Controller Function Codes (Continued) CODE # TITLE DESCRIPTION Cd58 Water Pressure Switch / Con- Cd58 will display “CLOSE” if the WPS or CFS switch contacts are denser Fan Switch State or closed or if these options are not installed. “OPEn” is displayed when Override Logic State the WPS or CFS switch contacts are open.
  • Page 71 Table 4–3 Controller Function Codes (Continued) CODE # TITLE DESCRIPTION Cd62 High Speed Evaporator Fan Cd62 is used to force evaporator fan speed to high while temperature Setting control is being performed in the perishable setpoint range. When set to “On”, evaporator fans operate in high speed regardless of any other active option that can control evaporator fan speed.

  • Page 72: Figure 4.12 Alarm Troubleshooting Sequence

    Figure 4.12 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?

  • Page 73: 4.11 Controller Alarm Indications

    4.11 CONTROLLER ALARM INDICATIONS AL03 LOSS OF SUPERHEAT CONTROL Cause: Superheat has remained below 1.66°C (3°F) degrees for five minutes continuously while compres- sor running. Compressor drawing more than 2.0 amps, compressor pressure ratio is greater than 1.8, and Electronic Expansion Valve (EEV) is at 0% open. Component Electronic Expansion Valve (EEV) Troubleshooting Check the operation of the EEV using Cd41.
  • Page 74 AL08 HIGH COMPRESSOR PRESSURE RATIO Cause: Controller detects discharge pressure to suction pressure ratio is too high. The controller will attempt to correct the situation by restarting the compressor. Component Discharge Pressure Transducer (DPT) Troubleshooting Confirm accurate DPT pressure readings, refer to MANIFOLD GAUGE SET Section 7.2.
  • Page 75 AL16 COMPRESSOR CURRENT HIGH Cause: Compressor current draw is over the calculated maximum for 10 minutes. Component Current Sensor Troubleshooting Compare Cd3 to actual measured current at wire T1-T2 or T3 going to the compressor contactor. If there is a difference, determine whether this is caused by current sensor or amp clamp tool.
  • Page 76 AL17 COMPRESSOR PRESSURE DELTA FAULT Cause: Compressor has attempted to start in both directions and fails to generate sufficient pressure dif- ferential between SPT and DPT. Component Troubleshooting Controller will attempt restart every 20 minutes and deactivate the alarm if successful. Corrective Action Resume normal operation.
  • Page 77 AL18 DISCHARGE PRESSURE HIGH Cause: Discharge pressure is over the maximum for 10 minutes within the last hour. Component Restrictions in the refrigeration system. Troubleshooting Ensure Liquid Line Service Valve is fully open. Corrective Action Open Liquid Line Service Valve as needed. Component Filter Drier Troubleshooting Check the filter drier, if it is iced up or very cold it indicates that the...
  • Page 78 AL19 DISCHARGE TEMPERATURE HIGH Cause: Discharge temperature exceeds 135°C (275°F) for 10 minutes within the last hour. Component Restrictions in the refrigeration system. Troubleshooting Ensure the Discharge Service Valve is fully open. Corrective Action Open the Discharge Service Valve as needed. Troubleshooting Check the unit for air flow restrictions.
  • Page 79 AL21 CONTROL CIRCUIT FUSE (F1/F2) Cause: One of the 18 VAC controller fuses (F1/F2) is open. Refer to Cd08. Component System Sensors Troubleshooting Check system sensors for short to ground. Corrective Action Replace defective sensor(s) Component Wiring Troubleshooting Check wiring for short to ground. Corrective Action Repair as needed.
  • Page 80 AL25 CONDENSER IP Cause: Condenser fan motor internal protector (IP) is open. Component Insufficient Air Flow Troubleshooting Shut down unit and check condenser fan for obstructions. Corrective Action Remove obstructions. Component Condenser Fan Motor Troubleshooting Shut down unit, disconnect power, & check Condenser Fan Motor IP at plug connection pins KB5 &...
  • Page 81 AL28 LOW SUCTION PRESSURE Cause: Suction pressure too low for normal operation Component Troubleshooting Power cycle the unit. Corrective Action Resetting the unit may correct problem, monitor the unit. Component Suction Pressure Transducer (SPT) Troubleshooting Confirm accurate SPT pressure readings, refer to MANIFOLD GAUGE SET Section 7.2 Corrective Action Replace SPT if defective...
  • Page 82 AL51 EEPROM FAILURE Cause: Controller Memory Failure Component Controller Troubleshooting Pressing the ENTER key when “CLEAr” is displayed will result in an attempt to clear the alarm. Corrective Action If action is successful (all alarms are inactive), alarm 51 will be reset. Troubleshooting Power cycle the unit.
  • Page 83 AL57 AMBIENT SENSOR (AMBS) Cause: Invalid Ambient Temperature Sensor (AMBS) reading. Component Ambient Temperature Sensor (AMBS) Troubleshooting Test the AMBS, refer to Sensor Checkout Procedure Section 7.25.1. Corrective Action Replace AMBS if defective, refer to TEMPERATURE SENSOR Ser- vice Section 7.25.
  • Page 84 AL61 HEATER CURRENT DRAW FAULT Cause: Improper current draw during heat or defrost mode. Component Heater(s) Troubleshooting While in heat or defrost mode, check for proper current draw at heat- er contactors, refer to ELECTRICAL DATA Section 3.3. Corrective Action Replace heater(s) if defective, refer to Section 7.13.2 Evaporator Heater Removal and Replacement.
  • Page 85 AL65 DISCHARGE PRESSURE TRANSDUCER (DPT) Cause: Compressor Discharge Transducer is out of range. Component Compressor Discharge Transducer (DPT) Troubleshooting Confirm accurate DPT pressure readings, refer to MANIFOLD GAUGE SET Section 7.2. Corrective Action Replace DPT if defective. AL66 (SPT) SUCTION PRESSURE TRANSDUCER, (EPT) EVAPORATOR PRESSURE TRANSDUCER Cause: Suction Pressure Transducer (SPT) out of range.
  • Page 86 AL71 SECONDARY RETURN SENSOR (RRS) Cause: Secondary Return Sensor (RRS) is out of range. Component Secondary Return Sensor (RRS) Troubleshooting Perform Pre-trip P5: Corrective Action If P5 passes, no further action is required. If P5 fails, replace the defective sensor as determined by P5, refer to TEMPERATURE SENSOR Service Section 7.25.

  • Page 87: 4.12 Controller Pre-Trip Test Codes

    ERR# INTERNAL MICROPROCESSOR FAILURE In the event that a failure occurs and the display cannot be updated, the status LED will indicate the appropriate ERR code using Morse code as shown below. E R R 0 to 9 ERR0 = . .-. .-. ----- ERR1 = .
  • Page 88 Table 4–4 Controller Pre-Trip Test Codes CODE NO. TITLE DESCRIPTION P0-0 Pre-Trip Initiated: Container identifier code, Cd18 Software Revision Number, Cd20 Container Configuration Dis- Unit Model Number, & configuration database identifier CFMMYYDD are dis- play, Indicator played in sequence. Lamps, LEDs, and Next the unit will indicate the presence or non-presence of an RMU according Displays to whether any RMU inquiry messages have been received since the unit...
  • Page 89 If unit configured for single evaporator fan operation and either AL11 or AL12 is active at the start of either test, then the test will fail immediately. If AL11 or AL12 become active during the test, then the test will fail upon conclusion of the test. CODE TITLE DESCRIPTION...
  • Page 90 CODE TITLE DESCRIPTION P5-1 Supply Probe Test This test if for units equipped with secondary supply probe only. The temperature difference between primary supply probe and secondary supply probe is compared. Test passes if temperature comparison falls within the specified range. If this test fails, “P5-1”...
  • Page 91 CODE TITLE DESCRIPTION P5-10 Humidity Sensor This is a Pass/Fail/Skip test of the humidity sensor configuration. Controller Configu- Test passes if the controller configuration has humidity sensor in. ration Verification Test fails if the controller configuration has humidity sensor out and Vout is Test greater than 0.20 Volts for the humidity sensor.
  • Page 92 CODE TITLE DESCRIPTION P6-7 Digital Loader/Un- Passes if pressure and current changes are within predetermined values 3 loader Valve Test seconds after DLV/DUV switch signal. If it does not pass then refer to Sec- tion 7.19 P6-10 Electronic Expan- The test records the suction pressure during the open valve position and sion Valve Test passes if the suction pressure increase is above 3 psi when the valve opens for 10 seconds.
  • Page 93 P8 Tests - Perishable Mode Tests: Pretrip tests P7-0 and P7-1 must have passed or have been skipped for these tests to execute. CODE TITLE DESCRIPTION P8-0 Perishable Mode If the control temperature is below 15.6°C., the setpoint is changed to Test 15.6°C., and a 180 Minute timer is started.
  • Page 94 CODE TITLE DESCRIPTION P9-0 DTT Closed and P9-0 DTT Closed and Open Test Open Test During P9-0 the defrost temperature sensor (DTS) reading will be displayed on the left display. The right display will show the supply air temperature. The unit will run FULL COOL for 30 minutes maximum until the DTT is con- sidered closed.

  • Page 95: Table 4-5 Datacorder Function Code Assignments

    Table 4–5 DataCORDER Function Code Assignments NOTE: Inapplicable Functions display “-----” To Access: Press ALT.MODE key then CODE SELECT key CODE NO. TITLE DESCRIPTION Recorder Supply Current reading of the supply recorder sensor. Temperature Recorder Return Current reading of the return recorder sensor. Temperature dC3-5 USDA 1,2,3 Tem-...

  • Page 96: Table 4-6 Datacorder Pre-Trip Result Records

    Table 4–6 DataCORDER Pre-Trip Result Records TEST NO. 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 Condenser Fan On Pass/Fail/Skip Result, Water pressure switch (WPS) - Open/ Closed, Change in currents for Phase A, B and C Condenser Fan Off Pass/Fail/Skip Result, Change in currents for Phase A, B and C...

  • Page 97: Table 4-7 Datacorder Alarms

    Table 4–7 DataCORDER Alarms To Access: Press ALT. MODE key then ALARM LIST key CODE NO. TITLE DESCRIPTION dAL70 Recorder Supply Temperature The supply recorder sensor reading is outside of the range Out of 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 98 Table 4–7 DataCORDER Alarms To Access: Press ALT. MODE key then ALARM LIST key CODE NO. TITLE DESCRIPTION dAL88 DataCORDER EEPROM Failure A write of critical DataCORDER information to the EE- PROM has failed. dAL89 Flash Memory Error Error An error has been detected in the process of writing daily data to the non-volatile FLASH memory.

  • Page 99: Operation

    SECTION 5 OPERATION INSPECTION (B EFORE OADING WARNING Beware of unannounced starting of the evaporator and condenser fans. The unit may cycle the fans and compressor unexpectedly as control requirements dictate. 1. Check inside for the following: a. Check channels or “T” bar floor for cleanliness. Channels must be free of debris for proper air circulation. b.

  • Page 100: Adjust Fresh Air Makeup Vent

    1. Make sure that the start−stop switch (ST, on control panel) and circuit breakers CB−1 (in the control box and CB−2 (on the transformer) are in position “0” (OFF). Plug in and lock the 460 VAC power plug at the recep- tacle on the transformer.

  • Page 101: Lower Fresh Air Makeup Vent

    Figure 5.2 Upper Fresh Air Make Up Flow Chart FLOW FLOW (CMH) 60HZ (CMH) 50HZ TBAR TBAR 1 1/2” 1 1/2” TBAR TBAR 2 5/8” 2 5/8” TBAR 3” TBAR 3” 90 100 90 100 PERCENT OPEN PERCENT OPEN 5.3.2 Lower Fresh Air Makeup Vent a.

  • Page 102: Vent Position Sensor

    c. Air Sampling for Carbon Dioxide (CO ) Level Loosen hex nuts and move the cover until the arrow on the cover is aligned with the “atmosphere sampling port” label. Tighten the hex nuts and attach a 3/8 in. hose to the sampling port. If the internal atmosphere content has reached an unacceptable level, the operator may adjust the disc opening to meet the required air flow volume to ventilate the container.

  • Page 103: Eautofresh Modes Of Operation

    5.4.3 eAutoFresh Modes of Operation When setting any mode of operation, complete the entire process to ensure all parameters are set. a. OFF A setting of OFF will disable all automatic venting operations. The eAutoFresh vent will be driven fully closed and the eAutoFresh opening set to 0 CMH in Cd44.

  • Page 104: Connect Remote Monitoring Receptacle

    e. GAS LIMIT (gASLM) In GAS LIMIT mode, access to the submenu is available provided a perishable set point has been selected, and a valid reading is detected from the CO sensor. In “Gas limit” mode the microprocessor will monitor and limit the level of CO in the container by opening and closing the eAutoFresh vent.

  • Page 105: Starting The Unit

    The electronic phase detection system will check for proper compressor rotation within the first 30 seconds. If rotation is not correct, the compressor will be stopped and restarted in the opposite direction. If the compressor is producing unusually loud and continuous noise after the first 30 seconds of operation, stop the unit and investigate.
  • Page 106 The testing begins with access to a Pre−trip selection menu. The user may have the option of selecting one of two automatic tests. These tests will automatically perform a series of individual Pre−trip tests. The user may also scroll down to select any of the individual tests.

  • Page 107: Probe Diagnostics

    3. TO RUN AN INDIVIDUAL TEST: Scroll through the selections by pressing the UP ARROW or DOWN ARROW keys to display an individual test code. Pressing ENTER when the desired test code is displayed. a. Individually selected tests, other than the LED/Display test, will perform the operations necessary to ver- ify the operation of the component.

  • Page 109: Unit Operates Long Or Continuously In Cooling

    SECTION 6 TROUBLESHOOTING UNIT WILL NOT START OR STARTS THEN STOPS Condition Possible Cause Remedy/Refer- ence Section External power source OFF Turn On Start−Stop switch OFF or defective Check No power to unit Circuit breaker tripped or OFF Check Autotransformer not connected Section 5.2.2 Circuit breaker OFF or defective Check...

  • Page 110: Unit Will Not Heat Or Has Insufficient Heating

    UNIT RUNS BUT HAS INSUFFICIENT COOLING Condition Possible Cause Remedy/Refer- ence Section Abnormal pressures Section 6.7 Abnormal temperatures Section 6.15 Abnormal currents Section 6.16 Controller malfunction Section 6.9 Evaporator fan or motor defective Section 7.14 Refrigeration system Compressor service valves or liquid line shutoff valve par- Open valves tially closed completely...

  • Page 111: Unit Will Not Terminate Heating

    UNIT WILL NOT TERMINATE HEATING Condition Possible Cause Remedy/Refer- ence Section Controller improperly set Reset Controller malfunction Section 6.9 Unit fails to stop heating Heater termination thermostat remains closed along with Section 7.13 the heat relay UNIT WILL NOT DEFROST PROPERLY Condition Possible Cause Remedy/Refer-...

  • Page 112: Abnormal Noise Or Vibrations

    ABNORMAL PRESSURES Condition Possible Cause Remedy/Refer- ence Section Incorrect software and/or controller configuration Check Failed suction pressure transducer (SPT) or evaporator Replace pressure transducer (EPT) Suction service valve partially closed Open Filter drier partially plugged Section 7.12 Low refrigerant charge Section 7.3 Low suction pressure No evaporator air flow or restricted air flow...

  • Page 113: 6.10 No Evaporator Air Flow Or Restricted Air Flow

    6.10 NO EVAPORATOR AIR FLOW OR RESTRICTED AIR FLOW Condition Possible Cause Remedy/Refer- ence Section Frost on coil Section 6.6 Evaporator coil blocked Dirty coil Section 7.13 Evaporator fan motor internal protector open Section 7.14 Evaporator fan motor(s) defective Section 7.14 No or partial evaporator air flow Evaporator fan(s) loose or defective Section 7.14...

  • Page 114: 6.12 Electronic Expansion Valve Malfunction

    6.12 ELECTRONIC EXPANSION VALVE MALFUNCTION Condition Possible Cause Remedy/Refer- ence Section Incorrect software and/or controller configuration Check Failed suction pressure transducer (SPT) or evaporator Replace pressure transducer (EPT) Suction service valve partially closed Open Filter drier partially plugged Section 7.12 Low refrigerant charge Section 7.3 Low suction pressure...

  • Page 115: 6.14 Compressor Operating In Reverse

    6.14 COMPRESSOR OPERATING IN REVERSE Condition Possible Cause Remedy/Refer- ence Section 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 117: Service

    SECTION 7 SERVICE Use a refrigerant recovery system whenever removing refrigerant. When working with refriger- ants you must comply with all local government environmental laws. In the U.S.A., refer to EPA section 608. WARNING EXPLOSION HAZARD Failure to follow this WARNING can result in death, serious personal injury and / or property damage.

  • Page 118: Service Connections

    A R-134a manifold gauge/hose set with self-sealing hoses (see Figure 7.2) is required for service of the models covered within this manual. The manifold gauge/hose set is available from Carrier Transicold. (Carrier Transicold part number 07-00294-00, which includes items 1 through 6, Figure 7.2.)

  • Page 119: Pump Down The Unit

    Figure 7.3 Service Valve Access Valve Line Connection Stem Cap Valve Stem Valve (Frontseated) Valve (Backseated) Compressor of Filter Drier Inlet Connection Connection of the manifold gauge/hose set (see Figure 7.4) is dependent on the component being serviced. If only the compressor is being serviced, the high side coupling is connected to the discharge service valve.

  • Page 120: Refrigerant Leak Checking

    Automatic Pump Down: To perform an Automatic Pump Down using Cd59 Pump Down Logic, refer to Table 4–3 Controller Function Codes. Manual Pump Down: 1. Attach manifold gauge set to the compressor suction and discharge service valves. Refer to paragraph 6.2. 2.

  • Page 121: Evacuation And Dehydration

    2. Essential tools to properly evacuate and dehydrate any system include a vacuum pump (8 m3/hr = 5 cfm volume displacement) and an electronic vacuum gauge. The pump is available from Carrier Transicold, P/N 07-00176-11. The magnet is P/N 07-00512-00. The micron gauge is P/N 07-00414-00.

  • Page 122: Complete System

    Transicold part number 07-00512-00. To prevent the area between the DUV and the Compressor from being isolated during evacua- tion, it is necessary to open the DUV using a magnet tool, Carrier Transicold part number 07- 00512-00. 3. Remove the ESV and DUV coils from the valve bodies. Place the magnet tool over the valve stem, an audi- ble click will be heard when the ESV opens.

  • Page 123: Refrigerant Charge

    REFRIGERANT CHARGE WARNING EXPLOSION HAZARD Failure to follow this WARNING can result in death, serious personal injury and / or property damage. Never use air or gases containing oxygen (O2) for leak testing or operating the product. Charge only with R-134a: Refrigerant must conform to AHRI Standard 700 specification. 7.7.1 Checking the Refrigerant Charge Use a refrigerant recovery system whenever removing refrigerant.

  • Page 124: Compressor

    COMPRESSOR WARNING Make sure power to the unit is OFF and power plug disconnected before replacing the com- pressor. WARNING Before disassembly of the compressor, be sure to relieve the internal pressure very carefully by slightly loosening the couplings to break the seal. CAUTION The scroll compressor achieves low suction pressure very quickly.

  • Page 125: Figure 7.5 Compressor Kit

    10.Remove (slide out) the old compressor from the unit tagging it with unit information and reason for replace- ment. 11. Wire tie the compressor base plate with the wire ties (Figure 7.5, item # 10) to the compressor, and slide the new compressor in the unit.

  • Page 126: Figure 7.6 Compressor Ports/Connections

    Service Valve / Connection Torque Value Suction and Discharge Rotalocks 108.5 to 135.5 Nm (80 to 100 ft-lbs.) Unloader connection 24.5 to 27 Nm (18 to 20 ft-lbs.) Economized connection 32.5 to 35 Nm (24 to 26 ft-lbs.) Figure 7.6 Compressor Ports/Connections 17.Connect the new compressor dome temperature sensor with the old sensor wires removed in step i using butt-splices and heat shrinks.

  • Page 127: Figure 7.8 Installing Orange Gasket

    Figure 7.8 Installing Orange Gasket c. Coat the inside of the power plug (female) connector pins with the Krytox lubricant (Figure 7.5, item #13), and Insert the plug onto the compressor terminal connections. Make sure, the orange gasket has bot- tomed out onto the fusite and it fits securely onto the terminal pins while fully inserted into the orange plug as shown in Figure 7.9...

  • Page 128: High Pressure Switch

    26.Backseat all service valves, and run in full cool. 27.Verify refrigerant charge level per the unit s operation/service manual. 28.Perform a leak check of the system. 29.Replace any removed wire tie wraps and reinstall compressor guard. 30.If failure occurs under the unit’s warranty, tag the replacement part for cause of failure and collect an all data download for failure analysis.

  • Page 129: 7.10 Condenser Coil

    7.10 CONDENSER COIL The condenser coil consists of a series of parallel copper tubes expanded into copper fins and formed into a “C” shape with the fourth side of the square formed by the side support bracket. 7.10.1 Condenser Coil Cleaning To ensure optimal efficiency of the unit the condenser coil must be clean.

  • Page 130: Condenser Coil Preparation

    14.Remove the lower mounting bracket bolts from the inside of the coil. 15.Remove the top mounting bracket bolts and grille extension mount from inside the coil. 16.Remove the side support bracket mounting bolts. 17.Slide the condenser assembly with receiver out of the unit. 7.10.3 Condenser Coil Preparation Before installing the new condenser coil, the receiver assembly and mounting hardware must be removed from the...

  • Page 131: 7.11 Condenser Fan And Fan Motor

    Figure 7.12 Condenser Fan Position 37mm (1.5”) Shroud 19.Use Loctite “H” on the fan set screws, and tighten. 20.Refit left and right infill panels. 21.Refit the condenser fan grille, ensuring the grille is properly centered around the condenser fan. 22.Evacuate the entire unit, refer to Section 7.6.

  • Page 132: 7.12 Filter Drier

    4. Note the number of shims on each side of the motor as the same configuration will be required to refit the new motor. 5. Remove the fan motor mounting hardware and remove motor. 6. Loosely mount the new motor using new lock nuts. 7.

  • Page 133: Evaporator Heater Replacement

    2. With power OFF and power plug removed, remove the screws securing the panel covering the evaporator section (upper panel). 3. Disconnect the defrost heater wiring. 4. Remove the mounting hardware from the coil. 5. Unsolder the two coil connections, one at the distributor and the other at the coil header. 6.

  • Page 134: Replacing The Evaporator Fan Assembly

    7.14.1 Replacing the Evaporator Fan Assembly WARNING Always turn OFF the unit circuit breakers (CB-1 & CB-2) and disconnect main power supply before working on moving parts. 1. Remove access panel by removing mounting bolts and TIR locking device. Reach inside of unit and remove the Ty-Rap securing the wire harness loop.

  • Page 135: 7.15 Evaporator Section Cleaning

    Pow’r® HD) for the unit. This will assist in helping to remove the corrosive fumigation chemicals and dislodging of the corrosive elements. This cleaner is available from the Carrier Transicold Performance Parts Group (PPG) and can be ordered through any of the PPG locations; Part Number NU4371-88.

  • Page 136: 7.16 Electronic Expansion Valve

    7.16 ELECTRONIC EXPANSION VALVE The electronic expansion valve (EEV) is an automatic device which maintains required superheat of the refrigerant gas leaving the evaporator. The valve functions are: (a) automatic response of refrigerant flow to match the evapo- rator load and (b) prevention of liquid refrigerant entering the compressor. Unless the valve is defective, it seldom requires any maintenance.

  • Page 137: 7.17 Economizer Solenoid Valve

    5. Open liquid line service valve and check refrigerant level. 6. Check superheat. (Refer to Section 3.2). 7. Check unit operation by running Pre-trip (Refer to Section 5.8). 7.17 ECONOMIZER SOLENOID VALVE Figure 7.16 Coil View of Economizer Solenoid Valve (ESV) Slotted Screw Top Coil (Small) O-Ring Solenoid Coil, Enclosing Tube...

  • Page 138: 7.18 Economizer Expansion Valve

    7.18 ECONOMIZER EXPANSION VALVE The economizer expansion valve is an automatic device that maintains constant superheat of the refrigerant gas leaving at the point of bulb attachment, regardless of suction pressure. Unless the valve is defective, it seldom requires maintenance other than periodic inspection to ensure that the ther- mal bulb is tightly secured to the suction line and wrapped with insulating compound.

  • Page 139: Troubleshooting P6-7 (Dlv/Duv)

    7.19 TROUBLESHOOTING P6-7 (DLV/DUV) 7.19.1 Digital Unloader Valve (DUV) A failed digital unloader valve (DUV), which is normally closed,) or an internal seal failure of the compressor can result in the unit running continually in the fully loaded mode causing it to undershoot its set point temperature. Both of these can be checked out by running pre-trip test P6-7.

  • Page 140: 7.20 Digital Loader Valve

    Set the PCnt (20%setting – DUV Modulation TEST). If the compressor is able to unload, the compressor amperage and discharge pressure drops and the suction pressure will climb – DUV is okay. If the discharge pressure does not decrease after the valve energizes, replace the DUV.

  • Page 141: Digital Loader Installation

    7.20.2 Digital Loader Installation 1. Power unit off and lock/tag out to prevent inadvertent power up. 2. Remove 8 bolts from guard under control box and remove guard. 3. Remove the digital unloader valve coil (DUV) and place a magnet tool on the valve to open it. If a magnet is not available perform the Jumper procedure: a.

  • Page 142: 7.21 Digital Unloader Valve

    19.Weigh the proper refrigerant charge into the unit as per the units operation and service manual and perform a leak check of the system. 20.Replace the guard under the control box. 21.If changed under the units warranty, tag part with unit information and cause of failure. 22.If possible collect unit data download for future failure analysis.

  • Page 143: 7.22 Valve Override Controls

    10.Remove the unloader connection to the compressor. Discard the O-ring as it will be replaced. Ensure that the O-ring is not left attached to the compressor connection. 11. Remove the DUV coil to bracket mounting screws. 12.Slide the bracket assembly out (right and forwards between suction and discharge lines). 13.Wet wrap the suction service valve and Un-braze the remaining section of line to the bell connection at the suction service valve.

  • Page 144: 7.23 Autotransformer

    3. Use an ARROW key to scroll to the desired setting, and then press the ENTER key. Selections available for each of the tests are provided in Table 7-1. 4. If the timer is not operating, follow the above procedure to display the timer. Use an ARROW key to scroll to the desired time interval and press ENTER to start the timer.

  • Page 145: 7.24 Controller

    1. Obtain a grounding wrist strap (Carrier Transicold P/N 07-00304-00) and a static dissipation mat (Carrier Transicold P/N 07-00277-00). The wrist strap, when properly grounded, will dissipate any potential static buildup on the body.

  • Page 146: Controller Programming Procedure

    TP 1 - Not used in this application. TP 2 - Enables the user to check if the high pressure switch (HPS) is open or closed. TP 3 - Enables the user to check if the water pressure switch (WP) contact is open or closed. TP 4 - Enables the user to check for power availability to the DUV contact TD.

  • Page 147: Programming Procedure For Software Versions 5354 & Greater With Updated Menu Option (Menu0115.Ml)

    7.24.4 Programming Procedure for Software Versions 5354 & Greater With Updated Menu Option (menu0115.ml) Units must be loaded with software version 5354 or higher. See the label in the control box door for factory installed software version. The updated menu option allows the operational software to be loaded, and time and container identification to beset.

  • Page 148: Removing And Installing A Controller

    11. When software loading has successfully completed, the display will show the message “EEPrM donE.” (If a problem occurs while loading the software, the display will blink the message “Pro FAIL” or “bad 12V.” Turn start-stop switch OFF and remove the card.) 12.Turn unit OFF using start-stop switch (ST). 12.Remove the PCMCIA card from the programming/software port and return the unit to normal operation by placing the start-stop switch in the ON position.

  • Page 149: Battery Replacement

    3. Disconnect the battery wires from the “KA” plug positions 14, 13, 11. 4. Using Driver Bit, Carrier Transicold part number 07-00418-00, remove the 4 screws securing the display module to the control box. Disconnect the ribbon cable and set the display module aside.

  • Page 150: Sensor Checkout Procedure

    7.25.1 Sensor Checkout Procedure To verify the accuracy of a temperature sensor: 1. Remove the sensor and place in a 0°C (32°F) ice-water bath. The ice-water bath is prepared by filling an insulated container (of sufficient size to completely immerse bulb) with ice cubes or chipped ice, then filling voids between ice with water and agitating until mixture reaches 0°C (32°F) measured on a laboratory ther- mometer.

  • Page 151: Table 7-2 Sensor Resistance

    Table 7–2 Sensor Resistance Sensors AMBS, DTS, ETS, RRS, RTS, SRS, STS Ohms Ohms Ohms Ohms −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 26.7 9,299 58.9 2,590 −36.7...

  • Page 152: Table 7-3 Sensor Resistance (Cpds)

    Table 7–3 Sensor Resistance (CPDS) Sensors CPDS Ohms Ohms 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 -25.6 1,724,386 114.8 36,145 255.2 3,004 -22.0 1,522,200 118.4 33,445...

  • Page 153: Sensor Replacement

    7.25.2 Sensor Replacement WARNING Always turn OFF the unit circuit breaker (CB-1) and disconnect main power supply before removing electrical parts. 1. Turn unit power OFF and disconnect power supply Include white date code label when cutting out and removing defective sensors. The label could be required for warranty returns.

  • Page 154: Sensors Sts And Srs Re-Installation

    CAUTION Do not allow moisture to enter wire splice area as this may affect sensor resistance. 12.Slide large heat shrink tubing over both splices and shrink. 13.Position sensor in unit as shown in Figure 7.23 and re-check sensor resistance: Figure 7.25 - Return Sensor Positioning Figure 7.24 - Supply Sensor Positioning...

  • Page 155: Sensors Rrs And Rts Re-Installation

    7.25.4 Sensors RRS and RTS Re-Installation Reinstall the return sensor (Return Temperature Sensor RTS or Return Recorder Sensor RRS), as shown in Fig- 7.25. For proper placement of the return sensor, be sure to position the enlarged positioning section of the sen- sor against the side of the mounting clamp.

  • Page 156: Vent Position Sensor (Vps)

    Figure 7.27 Compressor Discharge Temperature Sensor SENSOR SILICONE BEAD SENSOR WELL 3. Using the syringe supplied with the replacement sensor, squeeze all of the dielectric compound into the sen- sor well. 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 the suction fitting.

  • Page 157: 7.27 Eautofresh Service

    To check with a SMA-12 portable stepper drive tester. The SMA-12 portable stepper drive tester (Carrier Transicold P/N 07-00375-00) is a battery operated stepper drive which will open and close the auto slide, which allows a more thorough check of the motor.

  • Page 158: Checking The Controller

    E will verify that the controller is supplying power to the drive module. To be thorough, and if it is desired, the signals on pins C and D can be checked as follows: 8. Install a jumper assembly (Carrier part number 07-00408-00) to connect the drive module and controller connectors as shown in Figure 7.29.

  • Page 159: Servicing The Eautofresh Drive System

    7.27.4 Servicing the eAutoFresh Drive System To replace the Drive Motor Assembly: 1. Remove the bolts that secure the eAutoFresh Panel (3, Figure 7.30) to the front of the unit. Reach in, cut tie wrap, and disconnect the motor connector. Bring panel to work area. 2.

  • Page 160: 7.28 Maintenance Of Painted Surfaces

    Units that have been factory provisioned for installation of a Communication Interface Module (CIM) have the required wiring installed. If the unit is not factory provisioned, a provision wiring kit (Carrier Transicold part number 76-00685-00) must be installed. Installation instructions are packaged with the kit.

  • Page 161: Table 7-4 R-134A Temperature - Pressure Chart

    Table 7–4 R-134a Temperature - Pressure Chart Temp Vacuum Temp Pressure “/hg cm/hg kg/cm “/hg cm/hg kg/cm 14.6 49.4 37.08 0.49 24.5 168.9 1.72 1.69 12.3 41.6 31.25 0.42 26.1 180.0 1.84 1.80 32.8 24.64 0.33 27.8 191.7 1.95 1.92 22.7 17.00 0.23...

  • Page 162: Table 7-5 Recommended Bolt Torque Values (Dry, Non-Lubricated For 18-8 Stainless Steel)

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

  • Page 163: Electrical Wiring Schematic And Diagrams

    SECTION 8 ELECTRICAL WIRING SCHEMATIC AND DIAGRAMS INTRODUCTION This section contains the Electrical Schematics and Wiring Diagrams. Figure 8.1 Legend SYMBOL DESCRIPTION SYMBOL DESCRIPTION AUTOFRESH INTERFACE MODULE (D 24) INTERROGATOR CONNECTOR FRONT (T 23) AMBS AMBIENT SENSOR (C 23) INTERROGATOR CONNECTOR REAR (T 24) CONTROLLER (L 21) INTERNAL PROTECTOR (E 14, F 11, G 14) CIRCUIT BREAKER...

  • Page 164: Figure 8.2 Unit Wiring Diagram

    Figure 8.2 Unit Wiring Diagram Based on Drawing 62 11755 T-365 8–2...

  • Page 165: Figure 8.3 Wiring Diagram

    Figure 8.3 Wiring Diagram Based on Drawing 62 11755 8–3 T-365...

  • Page 166: Figure 8.4 Wiring Diagram

    Figure 8.4 Wiring Diagram Based on Drawing 62 11755 T-365 8–4...
  • Page 167 China RoHS per SJ/T 11364-2014 (Pb) (Hg) (Cd) (Cr (VI)) (PBB) (PBDE) SJ/T 11364 GB/T 26572 GB/T 26572 62-66122-00, Rev A...

  • Page 169: Index

    INDEX Numerics Control Box 2–1 Control Box Section 3–5 230 Volt Cable 2–3 Controller 2–3 4–3 7–29 460 Volt Cable 2–3 Controller Alarm Indications 4–39 Controller Alarms 4–15 Controller Configuration Variables 4–24 Adding Refrigerant to System (Full Charge) 7–7 Controller Function Codes 4–26 Adding Refrigerant to System (Partial Charge) 7–7 Controller Pre-Trip Test Codes 4–53 Adjust Fresh Air Makeup Vent 5–2...
  • Page 170 Evaporator Fan and Motor Assembly 7–17 Evaporator Fan Operation 2–1 4–14 Maintenance of Painted Surfaces 7–44 Evaporator Heater Replacement 7–17 Maintenance Precautions 1–1 Evaporator Section 3–2 Manifold Gauge Set 7–1 Evaporator Section Cleaning 7–19 Operating Precautions 1–1 Failure Action 4–14 Operational Software (Cd Function Codes) 4–4 Feature Descriptions 2–1 Option Descriptions 2–2...
  • Page 171 Replacing a Sensor 7–37 Starting and Stopping Instructions 5–6 Replacing Electronic Expansion Valve and Strainer 7– Starting the Unit 5–7 Start-Up Inspection 5–7 Replacing High Pressure Switch 7–12 Stopping the Unit 5–7 Replacing the Digital Loader Valve 7–24 Replacing the Digital Unloader Valve 7–26 Replacing the Evaporator Fan Assembly 7–18 Temperature Control Microprocessor System 4–1 Temperature Readout 2–1...
  • Page 174 Carrier Transicold Division, Carrier Corporation A part of UTC Building & Industrial Systems, a business unit of United P.O. Box 4805 Technologies Corporation. Stock symbol UTX. Syracuse, NY 13221 USA Original Instructions www.carrier.transicold.com...

This manual is also suitable for:

69nt40-561-300

Table of Contents