Carrier X4 7300 Operation & Service Manual
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Carrier X4 7300 Operation & Service Manual

Trailer and rail refrigeration units
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Trailer & Rail Refrigeration
FUSIBLE
CONDENSER
PLUG
RECEIVER
SV1
N/O
BYPASS
CHECK
VALVE
FILTER -DRIER
SV4
N/C
OPERATION & SERVICE
MANUAL
For The
X4 7300 & X4 7500
Trailer and Rail Refrigeration Units
62--11637 Change 10/13

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  • Page 1 Trailer & Rail Refrigeration FUSIBLE CONDENSER PLUG RECEIVER BYPASS CHECK VALVE FILTER -DRIER OPERATION & SERVICE MANUAL For The X4 7300 & X4 7500 Trailer and Rail Refrigeration Units 62--11637 Change 10/13...
  • Page 2 OPERATION & SERVICE MANUAL For the X4 7300 & X4 7500 Trailer and Rail Refrigeration Units ©Carrier Corporation, 2013 D Printed in U. S. A. May 2013...
  • Page 3 TABLE OF CONTENTS PARAGRAPH NUMBER Page SAFETY PRECAUTIONS ..............1−1 SAFETY PRECAUTIONS .
  • Page 4 TABLE OF CONTENTS − Continued PARAGRAPH NUMBER Page SYSTEM OPERATING CONTROLS AND COMPONENTS ....... . . 2−10 2.5.1 Multiple Languages .
  • Page 5 TABLE OF CONTENTS − Continued PARAGRAPH NUMBER Page 3.13 UNIT DATA ................3−17 3.14 VIEW ACTIVE ALARMS .
  • Page 6 TABLE OF CONTENTS − Continued PARAGRAPH NUMBER Page 4.9.2 Normal Defrost Operation (Ambient Air Temperature less than 805 F (26.75C) ... . . 4−9 4.9.3 Normal Defrost Termination ............4−9 4.9.4 Normal Defrost Termination Sequence .
  • Page 7 TABLE OF CONTENTS − Continued PARAGRAPH NUMBER Page ALARM TROUBLESHOOTING ..............7−1 INTRODUCTION .

  • Page 8: Table Of Contents

    TABLE OF CONTENTS − Continued PARAGRAPH NUMBER Page ALARMS − Continued 00082 CHECK STARTER SOLENOID CIRCUIT ......... 7−36 00084 CHECK REMOTE ALARM LIGHT...
  • Page 9 TABLE OF CONTENTS − Continued PARAGRAPH NUMBER Page ALARMS − Continued P00181 CHECK SV4 VALVE ............7−58 P00182 CHECK SV1 VALVE .
  • Page 10 TABLE OF CONTENTS − Continued PARAGRAPH NUMBER Page ALARMS − Continued 20100 NO COMM FROM MICRO TO DISPLAY ......... 7−81 21100 NO COMM FROM ANY BOARD TO MAIN MICRO...
  • Page 11 TABLE OF CONTENTS - - Continued PARAGRAPH NUMBER Page 8.5.15 Water Pump/Alternator Belt ............8--14 8.5.16 Crankcase Breather .
  • Page 12 TABLE OF CONTENTS − Continued PARAGRAPH NUMBER Page 8.9.2 Condenser Coil ..............8−32 a.
  • Page 13 TABLE OF CONTENTS − Continued PARAGRAPH NUMBER Page ALTERNATOR ............... 9−3 REFRIGERATION / TEMPERATURE CONTROL .
  • Page 14 LIST OF ILLUSTRATIONS FIGURE NUMBER Page Figure 2−1 Front View - Refrigeration System Components ........2−2 Figure 2−2 Front View - Engine, Control System &...
  • Page 15 LIST OF ILLUSTRATIONS − Continued FIGURE NUMBER Page Figure 8−16 Suction Mod Valve Screen ............8−13 Figure 8−17 Engine Load Screen .
  • Page 16 LIST OF TABLES TABLE NUMBER Page Table 2-1 Model Chart ............... . . 2−1 Table 2-2 Additional Support Manuals .

  • Page 17: Section 1 − Safety Precautions

    SECTION 1 − SAFETY PRECAUTIONS PARAGRAPH NUMBER Page SAFETY PRECAUTIONS ............1−1 SPECIFIC WARNING AND CAUTION STATEMENTS .

  • Page 18: Specific Warning And Caution Statements

    The engine is equipped with a pressurized cooling system including a pressurized coolant bottle. Under Your Carrier Transicold refrigeration unit has been normal operating conditions, the coolant in the engine designed with the safety of the operator in mind. During and radiator is under high pressure and is very hot.
  • Page 19 DANGER - warns against an immediate hazard which WARNING WILL result in severe personal injury or death. WARNING - warns against hazards or unsafe condi- When performing service or maintenance tions which COULD result in severe personal injury or procedures: ensure any two way commu- death.
  • Page 20 WARNING ponents. Should a problem develop with these components, contact your nearest Carrier Transicold dealer for replacement. Do not unscrew service valve mounting capscrews all the way before breaking seal. Entrapped pressure could result in injury.
  • Page 21 R404A should be connected to this refriger- ert gas brazing procedures is mandatory for ation unit in order to pressurize the system. all Carrier Transicold refrigeration units; However, dry nitrogen may be used to in- otherwise compressor failure will occur.
  • Page 22 Procedure 98-50553-00 Inert Gas Brazing. pressor damage. CAUTION CAUTION Use only Carrier Transicold approved Poly- ol Ester Oil (POE). Buy quantities of one gal- Do not bend the copper tubing on the con- lon or less. When using this hygroscopic denser coil when installing the new con- oil, immediately reseal.
  • Page 23 1.3 SAFETY DECALS WARNING KEEP CLEAR EXPLOSION HAZARD OF ROTATING Failure to follow this WARNING can result in death, serious personal injury and/or property damage. BELTS AND Never use air or gas mixtures PULLEYS containing oxygen (O ) for leak testing or operating this product.
  • Page 24 WARNING BEWARE OF FAN BLADES WARNING UNIT MAY START AUTOMATICALLY 62-02509-00 REV A CONTAINS HOT SURFACES THAT WILL IGNITE COMBUSTIBLES AND FLAMMABLE MATERIALS SUCH AS BIRD NESTS, LEAVES, TREE LIMBS OR MAINTENANCE MATERIALS SUCH AS SHOP RAGS. DO NOT OPERATE WITHOUT INSPECTION. FIRES AND SERIOUS INJURIES MAY RESULT.
  • Page 25 CAUTION REPLACE COVERS AFTER SERVICING BATTERY TO INSURE PROTECTION OF BATTERY TERMINALS 62-02505-00 REV B THIS UNIT CHARGED WITH R‐404A CAUTION ! COMPRESSOR MUST BE CHARGED WITH P.O.E. OIL ONLY: CTD P/N: 07‐00317‐00 MOBIL ARCTIC P.N: EAL63 CTD P.N: 62‐03797‐11 62-11637 1−8...
  • Page 26 SECTION 2 − UNIT DESCRIPTION PARAGRAPH NUMBER Page INTRODUCTION ..............2−1 GENERAL DESCRIPTION .

  • Page 27: General Description

    RUN position. Also, the unit may be fitted ment. with two way communication equipment that will allow starting of the unit from a re- Temperature control is provided by the Carrier Transicold APX control system (Refer to Section mote location even though the switch is in the OFF position.

  • Page 28: Figure 2−1 Front View - Refrigeration System Components

    MOUNT ATT AS SHOWN É É É É É PARTITION 16,17 18,19 Condenser Coil & Subcooler Discharge Service Valve & Strainer Ambient Air Temperature Sensor (AAT) High Pressure Switch (HPS - Located Condenser Fan in the tee) Condenser Pressure Control Solenoid Compressor Discharge Pressure Valve (SV1) Transducer (CDP - Located in the elbow)

  • Page 29: Figure 2−2 Front View - Engine, Control System & Autofresh Components

    Coolant Bottle Rack Position Sensor (RPS) Clutch (CLH) Engine Oil Drain Fuel Filter/Heater (FH) or Fuel Head Assembly Starter (SS,SSC,SM) Exhaust Engine Preheater (EPH) Manual Plunger Engine Coolant Temperature Sensor (ENCT) Bleed Valve (Behind Engine Preheater) Alternator (ALT) Intake Air Temperature Sensor Fuel/Speed Actuator (FSA) ( IAT −...

  • Page 30: Figure 2−3 Evaporator Section - Grille Removed

    MOUNT DTT AS SHOWN É É É É É É TUBE SHEET Evaporator Air Nozzle Defrost Termination Temperature Evaporator Fan Sensor (DTT) Supply Air Temperature Sensor (SAT) Return Air Temperature Sensor (RAT) Low Pressure Defrost Air Switch Tubing (Clear) EVXV Inlet Strainer Location High Pressure Defrost Air Switch Tubing (Red) Evaporator Outlet Pressure Transducer (EVOP) Evaporator Coil...

  • Page 31: Condensing Section

    The condensing section (see Figure 2−1 & Figure 2−2) transducer (MAP). These sensors are installed when consists of an engine-compressor drive (unidrive Carrier Transicold factory monitoring of the air system is assembly), power train (which drives the fans), required. AutoFresh Air Exchange, condenser fan, condenser, radiator, heat exchanger, solenoid valves, defrost air 2.3.3 Engine Controls:...

  • Page 32: Figure 2−4 Power Train

    2.3.4 Alternator such that refrigerant heat can be absorbed by the sur- rounding air at ambient temperatures. Electrical power for the control system and for charging the battery is provided by the 12 VDC alternator. a. Alternator Operation CAUTION Observe proper polarity when installing battery.

  • Page 33: Figure 2−5 Compressor Cylinder Head Unloaded

    Solenoid Valve Strainer Valve Stem Suction Manifold Gas Bypass Port Cylinder Discharge Valve Spring Guide Valve Plate Spring Cylinder Suction Valve Piston Discharge Check Valve Assembly Bypass Valve Discharge Manifold Bleed Orifice Figure 2−5 Compressor Cylinder Head Unloaded b. Unloaded Operation Pressure from the discharge manifold (item 15, When the pressure behind the piston has been reduced Figure 2−5) passes through the strainer (9) and bleed...

  • Page 34: Figure 2−6 Compressor Cylinder Head Loaded

    Solenoid Valve Strainer Valve Stem Suction Manifold Gas Bypass Port Cylinder Discharge Valve Spring Guide Valve Plate Spring Cylinder Suction Valve Piston Discharge Check Valve Assembly Bypass Valve Discharge Manifold Bleed Orifice Figure 2−6 Compressor Cylinder Head Loaded c. Loaded Operation 2.3.8 Compressor Switches, Transducers and Sensors a.

  • Page 35: Evaporator Section

    d. Compressor Discharge Temperature Sensor liquid seal against the entrance of refrigerant gas into (CDT) the liquid line. The receiver is provided with two bull’s-eye sight The CDT is a thermistor type sensor that provides a glasses, for the observation of liquid level & moisture signal to the control system equivalent to the content, and a fusible plug.

  • Page 36: System Operating Controls And Components

    It provides the control system with incorporated into the Carrier Transicold APX control evaporator outlet pressure information to be displayed, system: recorded in the DataLink data recorder and used to S An easy to read LCD display MessageCenter which determine the required position of the evaporator ex- clearly displays all required information.

  • Page 37: Figure 2−7 Power Control Module

    F6 (10 amp) located at the AutoFresh Exchange solenoid harness connector. Fuse (F5 = 30 amp), Power Enable Relay Battery Negative Connection (T2) Fuse (F1 = 5 amp), Main Microprocessor/ Fuse (F6), AutoFresh Air Exchange Buzzer Power Alternator Output Connection (T3) Fuse (F3 = 5 amp), Stepper Valve/Engine Engine Preheater Power Connection (T4) Control Unit Power...

  • Page 38: Figure 2−8 Display Module

    ALARM START/STOP START/STOP DIESEL COOL CONTINUOUS DEFROST MENU BOX TEMPERATURE 5F SETPOINT 5F STATUS OK START/RUN LCD Display “=” (Select) Key MENU Key Arrow Keys DEFROST Key MessageCenter START/STOP - CONTINUOUS Key START/RUN-OFF Switch Status Bar Soft Keys Alarm LED USB Interface Port ALARM Key Figure 2−8 Display Module...

  • Page 39: Figure 2−9 Light Bar

    START-STOP/CONTINUOUS Key S Four Configurations are available: START‐STOP 1. Activate an alarm only while the switch is activated. Pressing this toggles between 2. Activate an alarm and shut the unit down while the CONTINUOUS Start-Stop and Continuous Operation. switch is activated. The unit will remain shut down for DEFROST Key a minimum of 3 minutes under this setting.

  • Page 40: Engine Data

    2.6.6 Electric Fuel Pump mechanical pump in transferring fuel from the tank to the engine. The pump is activated by the control system The optional electric fuel pump (Figure 8−8) is mounted whenever the engine is operating. at the fuel tank location and assist the engine mounted 2.7 ENGINE DATA Unit Specification...

  • Page 41: Refrigeration System Data

    Closes, on pressure fall, at: 350 10 psig (24 0.7 bar) Unit Dry Weight, Less Battery X4 7300 = 1610 (730 KG) X4 7500 = 1620 pounds (735 KG) Battery 50 pounds (23 KG.) Fan Clutch Air Gap 0.011 to 0.085 inch (0.28 to 2.2 mm)

  • Page 42: Refrigerant Circuit During Cooling

    2.12 REFRIGERANT CIRCUIT DURING COOLING The refrigerant then flows through the liquid line solen- oid valve (SV2) to the suction line heat exchanger. Here When cooling, (See Figure 2−10) the unit operates as a the liquid is further reduced in temperature by giving off vapor compression refrigeration system.

  • Page 43: Figure 2−10 Refrigerant Circuit - Cooling

    CONDENSER FUSIBLE PLUG RECEIVER BYPASS CHECK SUBCOOLER VALVE É É É Â Â Â Â EVXV EVOT EVOP CSMV LIQUID LINE SERVICE VALVE É É É É É É É É É É É É É É É É É É É É É É É É É É É É É É É É...

  • Page 44: Figure 2−11 Refrigerant Circuit - Heat & Defrost

    2.13 REFRIGERANT CIRCUIT - HEATING AND DE- The refrigerant is warmer than the air that is circulated FROSTING over the tubes by the evaporator fan. The evaporator tubes have aluminum fins to increase heat transfer; When vapor refrigerant is compressed to a high pressure therefore heat is transferred to the air circulated over the and temperature in a reciprocating compressor, the evaporator.
  • Page 45 SECTION 3 − OPERATION PARAGRAPH NUMBER Page DISPLAY ............... . 3−1 DISPLAY SCREENS .

  • Page 46: Section 3 Operation

    SECTION 3 OPERATION 3.1 DISPLAY WARNING APX control system equipped units may start automatically at any time the START/RUN - OFF switch (SROS) is in the START/RUN position. Also, the unit may be fitted with two way communication equipment that will allow starting of the unit from a remote location even though the switch is in the OFF position.

  • Page 47: Lcd Display Screens

    3.2 DISPLAY SCREENS LCD DISPLAY SCREENS START/STOP DIESEL COOL BOX TEMPERATURE 5F SETPOINT 5F STATUS OK Status Bar Box Temperature Setpoint MessageCenter DEFAULT SCREEN START/STOP DIESEL COOL Viewing Menu Soft Key Selections Press Menu Key to Scroll INTELLISET PRETRIP HOUR UNIT METERS DATA...
  • Page 48 1. Place the START/RUN-OFF switch in the START/RUN position. 2. The system will display the Carrier Transicold logo, display the default screen, present language selec- tion and the hour meter readings (if configured to do so) along with a test flash of the alarm light and light bar amber LED’s.
  • Page 49 The operator may then call up the settings by simply se- possible settings. Factory IntelliSets are lecting the assigned IntelliSet name. available from your authorized Carrier Transicold Truck/Trailer dealer. For example: A load of apples may require setting the control system for continuous operation at 35°F (1.7°C) 2.
  • Page 50 3.4 INTELLISET − Continued 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC Mode and the default screen displayed, press the “=” key. If the screen shown just above step 3 below is displayed, pro- ceed to step 3.
  • Page 51 3.5 PRETRIP NOTE Pretrip will run until completed, unless an alarm Pretrip is a set of tests run by the control system to occurs that causes Pretrip to be aborted. Only check unit operation. It is recommended that a Pretrip is alarms that will result in other erroneous alarms run prior to loading the refrigerated compartment.
  • Page 52 3.5 PRETRIP - Continued PRETRIP STATUS Pretrip Type: Cool - Ambient 755F Test 2 of 10 - Current Test Current Draw - 2 Amps UNIT TEST STOP DATA RESULTS PRETRIP NOTE: During Pretrip the ALARM light will illuminate to indicate there is no temperature control. 5.
  • Page 53 PRETRIP (Continued) Test 10 - Check Suction Modulation Valve (CSMV) This test is run to ensure that the CSMV is opening and Test 3 - Temperature Sensor Check closing properly. If suction pressure doesn’t change as Check the condition of all of the system temperature expected with CSMV closed, then the P00180 - sensors.

  • Page 54: Changing Setpoint

    3.6 CHANGING SETPOINT ALARM START/STOP START/STOP DIESEL COOL CONTINUOUS DEFROST MENU BOX TEMPERATURE 5F SETPOINT 5F STATUS OK 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC Mode and the default screen displayed (press the Back soft key if required): 2.

  • Page 55: Start-Stop Operation

    3.7 START-STOP OPERATION 1 & 3 ALARM START/STOP START/STOP DIESEL COOL CONTINUOUS DEFROST MENU BOX TEMPERATURE 5F SETPOINT 5F START/STOP MODE SELECTED 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC Mode press the START-STOP/CONTINUOUS key until “START/STOP”...

  • Page 56: Continuous Operation

    3.8 CONTINUOUS OPERATION 1 & 3 ALARM START/STOP CONTINUOUS DIESEL COOL CONTINUOUS DEFROST MENU BOX TEMPERATURE 5F SETPOINT 5F CONTINUOUS RUN MODE SELECTED 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC Mode press the START-STOP/CONTINUOUS key until “Continuous”...

  • Page 57: Data Recorder

    3.9 DATA RECORDER b. Sensor Data This information is recorded at pre-determined intervals The APX control system contains a built-in DataLink as a snapshot of the sensor at the time of the recording, data recorder with 3 megabytes of memory. The re- or an averaged reading of the sensor readings since the corded data can be downloaded from the DataLink data last recording based on 1 minute increments.
  • Page 58 3.9 DATA RECORDER - Continued ALARM START/STOP START/STOP DIESEL COOL CONTINUOUS Viewing Menu Soft Key DEFROST Selections Press Menu Key to Scroll MENU LANGUAGE DATA EXIT RECORDER 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC Mode press the MENU key until DATA RECORDER is displayed.

  • Page 59: Manual Defrost

    3.10 MANUAL DEFROST ALARM START/STOP START/STOP DIESEL DEFROST CONTINUOUS DEFROST DEFROST MENU SETPOINT 5F DEFROST CYCLE STARTED 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) press the MANUAL DEFROST key. NOTE: this procedure may be demonstrated in PC Mode but the unit will not actually enter defrost. 2.

  • Page 60: Language Selection

    3.11 LANGUAGE SELECTION ALARM START/STOP START/STOP DIESEL COOL CONTINUOUS Viewing Menu Soft Key DEFROST Selections Press Menu Key to Scroll MENU DATA LANGUAGE EXIT RECORDER NOTE: Language Selection may not be available on early software revisions. 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC Mode press the MENU key until LANGUAGE is displayed.

  • Page 61: Advanced User

    3.12 ADVANCED USER ALARM START/STOP START/STOP DIESEL COOL CONTINUOUS DEFROST MENU BOX TEMPERATURE 5F SETPOINT 5F STATUS OK NOTES: As shipped from the factory, the system will operate in the Driver Mode. In the Driver Mode, some data and menu items covered in this publication will not be available.
  • Page 62 3.13 UNIT DATA ALARM START/STOP START/STOP DIESEL COOL CONTINUOUS Viewing Menu Soft Key DEFROST Selections Press Menu Key to Scroll MENU INTELLISET PRETRIP HOUR UNIT METERS DATA 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC Mode, press the MENU key until UNIT DATA is displayed.

  • Page 63: Table 3-1 Unit Data

    3.13 UNIT DATA - Continued Table 3-1 Unit Data DATA DEFINITION ENGINE FUEL LEVEL This is only displayed when the optional sensor is installed and con- figured YES. Displays % of fuel in tank. BATTERY Battery voltage AMP DRAW Battery charging or discharging amps ENGINE COOLANT TEMP Engine coolant temperature ENGINE SPEED...

  • Page 64: View Active Alarms

    3.14 VIEW ACTIVE ALARMS ALARM START/STOP ACTIVE ALARMS (2 of 5) CONTINUOUS A13 High Discharge Pressure DEFROST A97 Check SV2 Circuit A86 Check UL2 Circuit MENU CLEAR BACK ALARMS 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC Mode press the ALARM key.
  • Page 65 3.15 VIEW HOUR METERS ALARM START/STOP START/STOP DIESEL COOL CONTINUOUS Viewing Menu Soft Key DEFROST Selections Press Menu Key to Scroll MENU INTELLISET PRETRIP HOUR UNIT METERS DATA 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC Mode, press the MENU key until HOUR METERS is displayed.

  • Page 66: Table 3-2 Functional Parameters

    3.16 FUNCTIONAL PARAMETERS ALARM START/STOP START/STOP DIESEL COOL CONTINUOUS Viewing Menu Soft Key DEFROST Selections Press Menu Key to Scroll MENU LANGUAGE DATA FUNCTIONS EXIT RECORDER 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC Mode, and in the Advanced User Mode, press the MENU key until FUNCTIONS is displayed.
  • Page 67 Table 3-2 Functional Parameters - Continued TEMPERATURE SETTINGS 1.5HRS The defrost timer will automatically put the unit into the defrost cycle DEFROST TIMER 3HRS at the interval selected if DTT is below 40°F (4.4°C) or the SAT is be- SET FOR 6HRS low 45°F (7.2°C).

  • Page 68: Start-Stop Settings

    Table 3-2 Functional Parameters - Continued START-STOP SETTINGS Time and Temperature values that control Start-Stop Operation are set in this section. The system may be configured so that: 1. the same settings apply to any setpoint = “Together” or 2. the settings are different, depending on whether the setpoint is in the perishable range or in the frozen range = “Separate”.

  • Page 69: Viewing Preferences

    Table 3-2 Functional Parameters - Continued OVERRIDES If the switches are all configured “Switch Not Installed”, this paramet- OVERRIDE er will not display. REMOTE SWITCH 1 SHUTDOWN NO = the system will respond to the switch as configured. (REMS1) YES = the configured action on activation of the switch will be over- ridden and the action will be alarm only.
  • Page 70 MessageCenter. The display backlight will turn off after NOTE 5 minutes. In the event that the Engine Coolant Tempera- ture sensor fails, Sleep Mode will operate as fol- lows: While in Sleep Mode, Unit Data and Alarm Lists may be viewed, and Functional Parameters may be viewed and In ambients above 32°F (0°C), the unit will run changed as necessary.

  • Page 71: Stopping Unit

    Carrier Transicold has worked with approved commu- WARNING nication providers with recommended installation loca- tions, and wiring connections to Carrier units. Instruc- tions for installing this equipment is supplied by each APX control system equipped units may individual provider, and not by Carrier Transicold. Com-...
  • Page 72 SECTION 4 − ENGINE AND TEMPERATURE CONTROL PARAGRAPH NUMBER Page INTRODUCTION ..............4−1 SEQUENCE OF OPERATION - ELECTRICAL .

  • Page 73: Engine Control

    SECTION 4 ENGINE AND TEMPERATURE CONTROL NOTES 1. If the unit is in an alarm condition, the control system alarm response may override the operation described herein. If an alarm is displayed in the MessageCenter, refer to the specific alarm description in Section 9 for “Unit Control”...

  • Page 74: Figure 4−1 Auto Start Sequence

    The engine start sequence consists of periods of time During the last five seconds of preheat OR for 5 seconds with the engine preheater (EPH − power from 3MM−14 before a start attempt, if no preheat is required, the through PCM −27 to EPHT) and starter (SM − power buzzer (B) is energized;...

  • Page 75: Modes Of Operation

    Mode (full capacity required) and in low speed when 4.4.2 Cooling less than full capacity is required. In the Cool Mode, the control system will operate the unit controls as follows: 4.4 MODES OF OPERATION Engine Once the engine is started, the system will operate in Speed Start-Stop or Continuous Operation energizing and Open...
  • Page 76 system operates in the Heat Mode with SV2 open dis- c. Heat Pulsed Mode charge pressure tends to increase. Control of the valve is dependent on discharge pressure and ambi- Engine ent temperature. The valve is opened (on a discharge Speed pressure fall) at 200 PSIG (13.6 bar), the valve is Closed...

  • Page 77: Temperature Control

    4.5 TEMPERATURE CONTROL Perishable Range or in the Frozen Range (refer to Section 4.5.2). 4.5.1 Temperature Determination • When TOGETHER is chosen, the same settings ap- The control system monitors the temperature readings ply to any setpoint. from the supply and return temperature sensors to If TOGETHER is selected, then the following Functional determine the mode of operation required to maintain compartment...
  • Page 78 3. The battery is fully charged - Voltage START-STOP RESTART Configuration value the engine will be started . The value may be set from 12.0 to A good battery is defined as having 13.4 VDC at 77_F 12.8 volts. The factory default setting is 12.2 volts. (25_C).

  • Page 79: Figure 4−2 Start-Stop Default Operating Sequence

    FALLING REFRIGERATED COMPARTMENT TEMPERATURE Pull Down SWITCH POINT +3.6_F (+2.0_C ) +0.5_F (+0.3_C ) Start-Stop Setpoint Setpoint Off Cycle -0.5_F (+0.3_C ) -3.6_F (-2.0_C ) Pull-Up RISING REFRIGERATED COMPARTMENT TEMPERATURE SWITCH POINT Switch Point = Controlling Temperature - Setpoint + results are above setpoint, - results are below setpoint *Switch points are the same for Perishable Range and Frozen Range except in Frozen Range heating is not allowed.

  • Page 80: Figure 4−3 Continuous Default Operating Sequence

    Table 4−2 Continuous Operation Modes SETPOINT ALLOWED OPERATION 32_F (0.0_C) and above UltraFresh with FreshProtect (if Configured*) Below 32_F (0.0_C) & Above10.4_F (-12_C) UltraFresh (FreshProtect Not Applicable) Less than 10.4_F (-12_C) Cooling (only) with UltraFreeze *Refer to Section 4.10.1 For information on FreshProtect. FALLING REFRIGERATED COMPARTMENT...
  • Page 81 longer in Pulldown or Pull-up even if the control NOTE temperature has not reached 1.5_F (0.8_C) away from The unit will operate in high speed in the setpoint. Defrost Mode except during pump down in high ambient defrost. The first parameter is the AUTOFRESH AIR Functional Parameter.
  • Page 82 4.9.5 High Ambient Defrost Operation • The control system will open SV1, open SV2 and un- load UL1. High ambient defrost is used if the ambient air temperature is greater than 80 ° F (26.7 ° C). The High • When suction pressure has risen 10 PSIG (0.7 bar) Ambient Defrost Cycle has three separate actions: above start point or after 15 seconds, the control sys- tem will place the unit in low speed, close SV4 and...

  • Page 83: Figure 4−4 Range Lock Settings - Non Overlapping

    Range Lock 1 & 2 Range 1 is set for Range 2 is set for 285 to 555F 05 to -225F (-2.25 to +12.85C) (-17.85 to -305C) Range 2 Range 1 -23.3 -17.8 -12.2 -6.7 -1.1 10.0 15.6 21.1 26.7 Figure 4−4 Range Lock Settings - Non Overlapping Range 1 always has priority when Range 1 &...
  • Page 84 28°F and 55°F (-2.2°C and +12.8°C), Range 1 will be set The operator can also pre-program a maximum evaporator coil temperature differential (delta-t) for Continuous, with a Minimum Temperature of 28°F between the return air and supply air temperatures as (-2.2°C) and a Maximum Temperature of 55°F an additional criteria for switching to Start/Stop (-12.8°C).
  • Page 85 Example 3 If the Minimum is set to OFF and the conditions are met while providing for power savings Maximum is set to 40°F (4.4°C) and the ambient air when High Air is not required. temperature falls below 40°F (1.7°C), the unit operation Operation High controlled...
  • Page 86 Winter which will force the unit to operate in Continuous 4.11. PREPROGRAMMED SOFTWARE OVERRIDES. Operation. The unit will continue to operate in Continuous Operation for a minimum of 30 minutes. 4.11.1 Cargo Protect Mode. After 30 minutes, the unit will return to auto Start/Stop if The control system will activate Cargo Protect Mode the ambient temperature has risen above the when the A00122 - “CHECK RETURN AIR SENSOR”...
  • Page 87 9. Product Shield High Air. 4. Throttle Position Delay. If the unit is running in two or four cylinder operation The engine is forced to high speed if the PRODUCT due to engine power unloading, and the rack position SHIELD HIGH AIR Configuration is active, refer to sensor is greater than 90%, loading of cylinders will be Section 4.10.3 delayed until the rack position is less than 90% or for a...
  • Page 88 2. Engine RPM . bar), the CSMV will move toward the closed position as required to bring the pressure below 400.0 = 27.22 bar ). When the engine throttle position has been more 4. High Suction Pressure Control. than 90% for three seconds the control system will monitor actual engine RPM verses desired engine RPM The control system monitors the suction pressure.
  • Page 89 SECTION 5 − CONTROL SYSTEM INTERFACE PARAGRAPH NUMBER Page INTERFACE METHODS ............5−1 TECHNICIAN MODE .

  • Page 90: Interface Methods

    SECTION 5 CONTROL SYSTEM INTERFACE 5.1 INTERFACE METHODS 3. USB memory device - Activities using the USB memory device include, creation of the device, PC Mode, downloading data files, installing software, There are four methods for interfacing with the APX and transferring configuration files.

  • Page 91: Figure 5−2 Technician Hour Meters

    5.2.1 Technician Hour Meters available for viewing when the control system is in the Technician Mode. Instructions for viewing these hour Hour meters, other than the standard hour meters, are meters are provided in Figure 5−2. ALARM START/STOP START/STOP DIESEL COOL CONTINUOUS Viewing Menu Soft Key...

  • Page 92: Figure 5−3 Inactive Alarms

    5.2.2 Inactive Alarms list and back. Alarms are also recorded in the DataLink data recorder. There are two sections in the Alarm list: an active alarm They are recorded at the time they occur (become ac- section and an inactive alarm section. The control sys- tive), and the time they become inactive.

  • Page 93: Figure 5−4 Setting Configurations

    5.2.3 Configuration Settings unit and define control system action under various op- erational conditions. Instructions for working with Con- Configuration settings match the control system to the figurations are provided in Figure 5−4. 1. Enter the Technicians Menu, highlight CONFIGURATION SETTINGS and then press the “=” key as de- scribed in Figure 5−1.

  • Page 94: Figure 5−4 Setting Configurations - Continued

    5. To change a value selection screen, press the “=” key with the desired Configuration sub-menu highlighted as in Sample Screen A. The individual Configurations within the sub-menu will display as in Sample Screen B. Press the Y or B key to scroll through the individual Configurations. The individual Configurations will high- light as the list is scrolled.

  • Page 95: Figure 5−5 Component Test Mode

    5.2.4 Component Test Mode not allowed to start when the System is in Component Test Mode. Instructions for entering the Component Component Test Mode allows the technician to energize Test Mode are provided in Figure 5−5. individual circuits for 5 minutes at a time. The engine is 1.
  • Page 96 5.2.5 Service Mode g. During evacuation, the control system will monitor the pressure transducer readings. The System will remain in “RECOVER / LEAK CAUTION CHK / EVAC MODE” as evacuation is started. As the refrigeration system is evacuated, the Service Mode MUST be used whenever re- system pressure will go into a deep vacuum.

  • Page 97: Usb Memory Devices

    1. Using a standard computer file creation program, create a folder on the device labeled CARRIER. The file name must be in all uppercase letters. 2. Open the CARRIER folder and create three sub-folders labeled DATAEXT, CONFIG and PROGRAM. The file names must be in uppercase letters.

  • Page 98: Figure 5−7 Pc Mode

    Data Transfer USB. NOTE: A PC–USB service cable (Carrier Transicold part number 22-04253–20) may also be used. The USB activity LED will flash, the Carrier Transicold logo will display and then the MessageCenter will display one or more USB soft key descriptions.

  • Page 99: Figure 5−8 Downloading Data Files

    5.3.3 Downloading Data Files Instructions for downloading data from the DataLink data recorder to a Data Transfer USB memory device are provided in Figure 5−8. ALARM START/STOP START/STOP DIESEL COOL CONTINUOUS DEFROST MENU BOX TEMPERATURE 5F SETPOINT 5F READING USB 1.

  • Page 100: Figure 5−9 Installing Software

    Whenever installing new software, it is always a good idea to start the unit and give it a quick check over prior to performing the operation. All units should have the software upgraded to the latest version, provided for Carrier Transicold dealers on the TransCentral web site. ALARM...

  • Page 101: Figure 5−10 Transferring Configuration Files

    5.3.5 Transferring Configuration Files Instructions for installing configuration files into the control system from a Data Transfer USB memory device are provided in Figure 5−10. Configuration” (*.set) files consist of one of the following types of files. A “Configuration” file contains a complete set of Configuration, Functional Parameter and Data Recorder settings for the system.

  • Page 102: Figure 5−11 Tru-Tech/Tru-View Connection

    S Create various customized text reports that include setpoint, sensors, and events. S Create various customized graphical reports. PC–USB Service Cable. Carrier Transicold S Print numerical, graphical, and event reports. Part number 22–04253–20 = 20 foot/6.1 meter S View and print refrigeration system historical settings long).
  • Page 103 START/RUN position. When field diagnosis Carrier Transicold b. Insert a Data Transfer USB memory device and refrigeration unit determines that an APX main download all data from the DataLink data recorder. If...
  • Page 104 5.5.2 Main Microprocessor Module Replacement blinking on the ten-thousands place. Press the UP or DOWN ARROW key to select the correct value, then press the ”=” key. If the correct number in any of the a. Ensure the unit will not start automatically by dis- locations is 0 (zero), just press the ”=”...
  • Page 105 5.5.4 Configurations Via Display Mounted Keys d. Select the Sensors to be recorded and whether you wish averaged or snapshot recordings (averaged is a. Refer to Table 5−1 for a list of available Configura- recommended for RAT, SAT, AAT & the remote tions.

  • Page 106: Unit Identification

    Table 5−1 Configuration Settings (Refer to Section 5.2.3 for instructions on entering Configuration settings) CONFIGURATION SETTINGS (1 OF 11) PRESS UP/DOWN TO DISPLAY AVAILABLE CONFIGURATIONS CONFIGURATION SETTINGS (1 OF 11) AVAILABLE CONFIGURATIONS INCLUDE UNIT IDENTIFICATION SETPOINT(S) & RANGE LOCK UNIT IDENTIFICATION HOUR METERS START-STOP SETTINGS SETPOINT(S) &...

  • Page 107: Table 5−1 Configuration Settings

    Table 5−1 Configuration Settings - Continued SETPOINT(S) & RANGE LOCK Configuration Selections Description DECIMAL DISPLAYED DISPLAYED = setpoint will be shown with a deci- mal and temperatures may be selected to a tenth of a degree. NOT DISPLAYED NOT DISPLAYED = setpoint will not be shown with a decimal.
  • Page 108 Table 5−1 Configuration Settings - Continued START-STOP SETTINGS Configuration Selections Description CURRENT FOR S/S SHUTOFF 7.0A In Start-Stop Operation the charging current must drop below this value before the unit is allowed to 1A TO 10A shut down. (in 0.5A incre- ments) VOLTAGE FOR S/S RESTART 12.2V...
  • Page 109 Table 5−1 Configuration Settings - Continued INTELLISET & PRODUCTSHIELD Configuration Selections Description ENABLE INTELLISET AT = KEY YES = Allows access to the IntelliSet menu using the = key. NO = Allows access to the IntelliSet menu using the SELECT key. PRODUCTSHIELD: ECONO OFF = ProductShield Econo is OFF GO TO START/STOP = Allows unit to be set for...
  • Page 110 Table 5−1 Configuration Settings - Continued Configuration Selections Description S HIGH AIR MIN. TEMP OFF = There is no lower limit for this parameter. -19°F to +119°F Select the lower limit of the ambient range desired (-28.3°C to for this parameter. Refer to Section 4.10.3 for more +48.3°C ) information on High Air Min.
  • Page 111 Table 5−1 Configuration Settings - Continued ENGINE SETTINGS Configuration Selections Description GLOW TIME SHORT Indicates to the main microprocessor which engine LONG is in the system. INTAKE HEATER LONG = Glow Plug equipped and longer glow times are used (TV engines). SHORT= Glow Plug equipped and shorter glow times are used (DI engines).
  • Page 112 Table 5−1 Configuration Settings - Continued ALARM SETTINGS Configuration Selections Description OUT OF RANGE SHUTDOWN YES / NO YES = When the refrigerated compartment temper- ature has been out-of-range for 45 minutes, the alarm light will come on, and the unit will shut down. NO = When the refrigerated compartment tempera- ture has been out-of-range for 30 minutes, the alarm light will come on and the unit will continue to...
  • Page 113 Table 5−1 Configuration Settings - Continued CONFIGURE HOUR METERS Configuration Selections Description VIEWABLE STANDARD METERS DISPLAY TOTAL ENGINE HR YES / NO YES = This hour meter will be displayed during the startup messaging sequence and will be in hour meter menu.
  • Page 114 S PM 1 − 5 RESET INTERVAL ENGINE HOURS The value to be entered here is the desired number 0 or 50 TO 30,000 of hours or cycles between PM Maintenance Note: hours in 50 hour in- Alarms for this meter. crements This Configuration will not display When the meter is reset, the value selected here...

  • Page 115: Remote Sensors

    Table 5−1 Configuration Settings - Continued REMOTE SENSORS Configuration Selections Description REMOTE TEMP SENSOR 1 (or 2) ON / OFF ON = A remote sensor has been added to the unit, and connected into the wire harness. OFF = There is no Remote Sensor (1or 2) in this unit.
  • Page 116 Table 5−1 Configuration Settings - Continued Configuration Selections Description REMOTE SWITCH 1 NOT INSTALLED NOT INSTALLED = There is no remote switch. ON CONTACTS ON CONTACTS CLOSED = The remote switch will CLOSED be used as a remote control switch. The switch contacts will be CLOSED whenever the switch is in ON CONTACTS the ON position.
  • Page 117 Table 5−1 Configuration Settings - Continued OTHER SETTINGS Configuration Selections Description ENABLE ADVANCED USER YES / NO YES = Advanced User Mode is automatically en- MODE: abled when the unit is powered on. NO = Driver Mode is automatically enabled when the unit is powered on and Advanced User Mode may be enabled manually.
  • Page 118 Table 5−1 Configuration Settings - Continued RAIL SETTINGS Configuration Selections Description UNIT OPERATION RAIL = The system is set to control Rail refrigera- STANDARD tion operation. When this Configuration is set to RAIL “RAIL” the following “VEHICLE ID”, “RAIL SHUT- DOWN OVERRIDE”...
  • Page 119 Table 5−1 Configuration Settings - Continued AUTO FRESH AIR SETTINGS Configuration Selections Description AUTOFRESH AIR NOT INSTALLED NOT INSTALLED = AutoFresh Air Exchange is not in- STANDARD stalled STANDARD = AutoFresh Air Exchange is installed SAUTOFRESH AIR DELAY SETPOINT SETPOINT - Once the compartment temperature has reached setpoint "1.5°F (0.8°C), the Auto- 0-48 HOURS IN Fresh Air Exchange will start to operate based on...

  • Page 120: Section 6 − Messagecenter

    SECTION 6 − MESSAGECENTER PARAGRAPH NUMBER Page MESSAGECENTER MESSAGES ..........6−1 62−11637...
  • Page 121 SECTION 6 MESSAGECENTER 6.1 MESSAGECENTER MESSAGES The following table lists all of the messages which do not appear in other lists in this manual and a description of their meaning. Refer to Section 9 for a list of Alarm messages. Refer to Section 3.13 for a list of Unit Data messages. Refer to Section 3.16 for a list of Functional Parameter messages.
  • Page 122 MessageCenter MESSAGES − Continued Message Description ENTERING SERVICE MODE The initial message for Service Mode. ERROR: ENG HRS > SWITCH ON HRS When setting up a replacement microprocessor, incorrect hours have been entered ERROR: HI SP HRS > TOTAL ENG HRS EVAC / CHARGE MODE The unit is in Service Mode, and the refrigeration system is ready to be evacuated then charged with refrigerant.
  • Page 123 MessageCenter MESSAGES − Continued Message Description RECORDING DATA … PLEASE WAIT, This message will be displayed when the unit is starting and the MICRO WILL RESTART WHEN COM­ main microprocessor is completing communicating with another PLETE module. RECOVER / LEAK CHK / EVAC MODE This message will be displayed when the unit is in Service Mode and the system is ready for recovery and leak testing.
  • Page 124 MessageCenter MESSAGES − Continued Message Description UNIT BATTERY TOO LOW The unit battery has dropped below 7 volts for more than 10 sec- onds. UNIT SHUTDOWN − DOOR OPEN The unit has shutdown because the refrigerated compartment door is open. UNIT SHUTDOWN −...

  • Page 125: Section 7 − Alarm Troubleshooting

    SECTION 7 − ALARM TROUBLESHOOTING PARAGRAPH NUMBER Page INTRODUCTION ..............7−1 NOTES .
  • Page 126 SECTION 7 ALARM TROUBLESHOOTING performed. For those cases where the cause of the WARNING problem is not obvious, this troubleshooting guide will be of assistance. APX control system equipped units may Troubleshooting should begin with the first alarm that start automatically at any time the START/ appears in the active alarm list.
  • Page 127 7.2 NOTES Note 3: Sensors may be tested by taking a resistance measurement, at the sensor side of the harness connector, at the sensor Note 1: The active alarm list may be cleared location. To do this, being careful not to when in the Driver Mode or Advanced User damage the connector pins, disconnect the Mode by pressing the CLEAR ALARMS soft...
  • Page 128 7.3 ALARMS Alarm Steps Alarm/Cause Corrective Action 00001 LOW FUEL LEVEL WARNING Note: This is an optional alarm which will not occur unless a fuel level sensor is present & configured “YES”. • ACTIVATION: The ENCU circuit is energized (3MM−9) and the fuel level is 15% or less for more than 30 seconds.
  • Page 129 Alarm Steps Alarm/Cause Corrective Action 00011 LOW ENGINE OIL PRESSURE • ACTIVATION: The ENCU circuit is energized (3MM−9) and engine oil pressure is below 12 psig (0.82 bar) for longer than 5 seconds while the engine is running. NOTE This alarm may be activated if too high a viscosity oil is used in cold ambient. •...
  • Page 130 Alarm Steps Alarm/Cause Corrective Action 00012 HIGH COOLANT TEMPERATURE • ACTIVATION: Condition 1: Ambient temperature is below 120°F (48.9°C) and engine coolant temperature is above 230°F (110°C) Condition 2:, Ambient temperature is above 120°F (48.9°C) and, engine coolant temp is above 241°F (116°C) Condition 3;...
  • Page 131 Alarm Steps Alarm/Cause Corrective Action 00013 HIGH DISCHARGE PRESSURE • ACTIVATION: Compressor discharge pressure switch (HPS) contacts are open. HPS contacts open when the discharge pressure rises to 465 psig (32 bar). • UNIT CONTROL: Shutdown and alarm. • RESET CONDITION: Auto reset after 15 minutes if the compressor discharge pressure falls below 350 psig (24 bar), or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 132 Alarm Steps Alarm/Cause Corrective Action 00015 BATTERY VOLTAGE TOO HIGH • ACTIVATION: Voltage at the main microprocessor is greater than 17 VDC. • UNIT CONTROL: Shutdown and alarm. • RESET CONDITION: Auto reset after 15 minutes when the voltage at the main microprocessor is between 11 and 14 VDC, or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 133 Alarm Steps Alarm/Cause Corrective Action 00017 HIGH COMP DISCHARGE TEMP • ACTIVATION: Discharge sensor alarm not active AND: The ambient temperature is below 120°F (48.9°C) and discharge temperature is greater than 309°F (154.4°C) for 3 minutes, or the ambient temperature is above 120°F (48.9°C) and discharge temperature is greater than 340°F (171.1°C) for 3 minutes, or the discharge temperature exceeded 350°F (176.7°C).
  • Page 134 Alarm Steps Alarm/Cause Corrective Action 00017 HIGH COMP DISCHARGE TEMP - Continued Perform Pretrip Check Clear Active Alarm list, then run Pre- Any active alarms must be corrected and cleared trip & check for any new alarms. before proceeding. Check Compressor Cylinder Valves & Gaskets Remove compressor heads &...
  • Page 135 Alarm Steps Alarm/Cause Corrective Action 00018 LOW REFRIGERANT PRESSURE • ACTIVATION: The compressor is operating with the suction pressure less than -3 psig (-0.20 bar) for more than the LP SHUTDOWN DELAY Configuration (up to 5 minutes) with RAT above -10°F (-23.3°C) or less than -8 psig (-0.53 bar) with RAT at any temperature.
  • Page 136 Alarm Steps Alarm/Cause Corrective Action 00018 LOW REFRIGERANT PRESSURE - Continued Visually Inspect Unit Visually inspect unit for damage to All tubing from the receiver to the evaporator section the liquid line causing a restriction or is in good condition. any signs of temperature drop at the There is no temperature drop at the drier or any- drier.
  • Page 137 Alarm Steps Alarm/Cause Corrective Action 00021 TECHNICIAN RESET REQUIRED • ACTIVATION: The High Engine Temp Shutdown Configuration and/or Engine Oil Pressure Shutdown Configuration is/are set to YES, and either Alarm 00011 - Low Engine Oil Pressure, or Alarm 00012 - High Coolant Temperature has become active and shut the unit down three times within the past 2 hours •...
  • Page 138 Alarm Steps Alarm/Cause Corrective Action 00027 HIGH SUCTION PRESSURE • ACTIVATION: The refrigeration system is running and the suction pressure has been greater than 98 psig (6.7 bar) for more than 10 minutes. • UNIT CONTROL: Alarm only or (if configured for shutdown) shutdown and alarm. •...
  • Page 139 Alarm Steps Alarm/Cause Corrective Action 00028 CHECK REFRIGERATION SYSTEM • ACTIVATION: Condition 1 = When system has been operating in Pulldown for more than five minutes and the delta-t (SAT - RAT) is between -3.0°F (-1.7°C) and +5°F (+2.8°C). Condition 2 = Discharge pressure is not at least 5 psig (0.34 bar) higher than suction pressure for more than 10 minutes.
  • Page 140 Alarm Steps Alarm/Cause Corrective Action 00029 CHECK HEAT CYCLE ACTIVATION: The unit has been operating in the heat cycle for more than 5 minutes, and the SAT is more than 5.5°F (3°C) colder than the RAT constantly for more than 60 seconds. (Unit is actually cooling the air going through the evaporator).
  • Page 141 Alarm Steps Alarm/Cause Corrective Action 00031 FAILED TO START - AUTO MODE • ACTIVATION: The engine has tried to start three times unsuccessfully. • UNIT CONTROL: Shutdown and alarm. • RESET CONDITION: Alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 142 Alarm Steps Alarm/Cause Corrective Action 00034 ENGINE FAILED TO STOP • ACTIVATION: Engine is turning more than 500 rpm for 20 seconds after unit shutdown or cycled off. • UNIT CONTROL: Shutdown and alarm. • RESET CONDITION: Alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 143 Alarm Steps Alarm/Cause Corrective Action 00035 CHECK STARTER CIRCUIT • ACTIVATION: Engine speed fails to reach 50 rpm during 2 start attempts. • UNIT CONTROL: Shutdown and alarm. • RESET CONDITION: Alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 144 Alarm Steps Alarm/Cause Corrective Action 00036 CHECK COOLANT TEMPERATURE • ACTIVATION: Coolant temperature is below 32°F (0°C) after the engine has been running for 5 minutes. • UNIT CONTROL: Shutdown and alarm. • RESET CONDITION: Auto reset when coolant temperature is higher than 36°F (2.2°C) or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 145 Alarm Steps Alarm/Cause Corrective Action 00038 CHECK HIGH SPEED RPM • ACTIVATION: The control system is calling for high speed operation, and engine speed is less than 1650 rpm, or greater than 1950 rpm for more than 60 seconds (120 seconds when the control system calls for a change from low to high speed, or when unit first starts).
  • Page 146 Alarm Steps Alarm/Cause Corrective Action 00039 CHECK ENGINE RPM • ACTIVATION: Alarm 00130(Check Engine Speed Sensor) is not active and engine speed is less than 1200 rpm or greater than 1950 for 5 minutes. • UNIT CONTROL: Alarm only or (if configured for shutdown) shutdown and alarm. •...
  • Page 147 Alarm Steps Alarm/Cause Corrective Action 00040 CHECK ENGINE PREHEAT CIRCUIT • ACTIVATION: (NOTE: This alarm can only occur when the preheat time is greater than 14 seconds. Refer to Table 4−1 for preheat heat times.) Engine preheater amperage is less than 70 Amps with heater activated.
  • Page 148 Alarm Steps Alarm/Cause Corrective Action 00041 ENGINE STALLED • ACTIVATION: The control system is calling for the engine to run, Engine speed sensor is good, and engine speed is less than 10 rpm; or the A00130 (Check Engine Speed Sensor) alarm is ON, and the Oil Pressure switch contacts are open.
  • Page 149 Alarm Steps Alarm/Cause Corrective Action 00041 ENGINE STALLED - Continued Check Engine Speed Sensor (ENSSN) Inspect harness, connector pins & No physical damage to harness. terminals. (See wiring schematic No damage, moisture, or corrosion in connectors. Section 10.) Check Engine Air-Intake System a.
  • Page 150 Alarm Steps Alarm/Cause Corrective Action 00051 ALTERNATOR NOT CHARGING • ACTIVATION: Unit is running and the current flow is more than -1.0 amps (discharge) between the alternator and the battery for 3 continuous minutes. • UNIT CONTROL: Alarm only or if Alternator Check Shutdown Configuration is set to “YES” shut- down and alarm.
  • Page 151 Alarm Steps Alarm/Cause Corrective Action 00053 BOX TEMP OUT−OF−RANGE • ACTIVATION: Condition One: If the unit is running in Pulldown and the SAT is not greater than 1°F (0.56°C) below the RAT or if the unit is running in Pull-Up and the SAT is not above the RAT, the configured action (Alarm only after 30 minutes or Alarm and Shutdown after 45 minutes) will be activated.
  • Page 152 Alarm Steps Alarm/Cause Corrective Action 00053 BOX TEMP OUT-OF-RANGE - Continued NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, clear the alarm(s). (See Note 1 page 7−2.) Operate the unit through the appropriate modes to see if any active alarm occurs.
  • Page 153 Alarm Steps Alarm/Cause Corrective Action 00054 DEFROST NOT COMPLETE • ACTIVATION: Defrost cycle did not terminate automatically. (DTT and SAT did not reach termination temperature of 55°F/12.8°C within 45 minutes or the SAT rose to 120°F/48.9°C during the cycle.) • UNIT CONTROL: Alarm Only.
  • Page 154 Alarm Steps Alarm/Cause Corrective Action 00055 CHECK DEFROST AIR SWITCH • ACTIVATION: The defrost air switch has called for a defrost cycle within 8 minutes of a defrost ter- mination for 2 consecutive defrost cycles. (The air switch contacts were closed continuously for 15 seconds before the defrost cycle was started.) •...
  • Page 155 Alarm Steps Alarm/Cause Corrective Action 00056 CHECK EVAPORATOR AIRFLOW • ACTIVATION: In the Heat Mode, the Suction pressure has been higher than 100 PSIG (6.8 bar) for more than 60 seconds OR In the Cool Mode, the SAT is 5°f (2.8°c) or more warmer than RAT for 3.5 minutes. After the first occurrence of this alarm, the MessageCenter will display “NO TEMP CONTROL - SEE ALARM LIST”.
  • Page 156 Alarm Steps ALARM / CAUSE CORRECTIVE ACTION 00057 CHECK REMOTE SWITCH 1 (REMS1) • ACTIVATION: REMS1 is set to trigger an alarm if the switch is activated (opened or closed, de- pending on switch type) for more than five seconds. •...
  • Page 157 Replace and setup main micropro- Refer to Section 5.5. cessor. NOTE: Specific Configurations may be found on the TransCentral Website (Authorized Carrier Transicold Dealers only). 00060 DATALOGGER (DataLink data recorder) TIME WRONG • ACTIVATION: The real time clock in the DataLink data recorder does not contain a valid date.
  • Page 158 Alarm Steps Alarm/Cause Corrective Action 00061 DOOR OPEN (DS1) • ACTIVATION: DS1 is set to trigger an alarm if the switch is activated (opened or closed, depending on switch type) for more than five seconds. • UNIT CONTROL: May be configured as alarm only, alarm and force low engine speed or alarm and shutdown.
  • Page 159 Alarm Steps Alarm/Cause Corrective Action 00067 SENSOR 1 INPUT VOLTAGE LOW • This alarm may be activated with earlier software revisions, follow procedure for alarm 22101 00072 CHECK ENCU POWER CIRCUIT • This alarm may be activated with earlier software revisions, follow procedure for alarm 05012 00078 CHECK SV1 CIRCUIT •...
  • Page 160 Alarm Steps Alarm/Cause Corrective Action 00079 CHECK SV4 CIRCUIT • ACTIVATION: A problem has been detected in the SV4 coil circuit. If this alarm is activated while the unit is operating in heat or defrost, the circuit is detected shorted. If this alarm is activated while the unit is operating in cool, the circuit is detected open.

  • Page 161: Check Starter Solenoid Circuit

    Alarm Steps Alarm/Cause Corrective Action 00081 CHECK FHR CIRCUIT • ACTIVATION: A problem has been detected in the fuel heater relay coil circuit. If this alarm occurs while the fuel heater circuit is operating, the circuit is detected shorted. If this alarm occurs while the fuel heater circuit is not operating, the circuit is detected open.

  • Page 162: 00085 Check Ul1 Circuit 7−37

    Alarm Steps Alarm/Cause Corrective Action 00085 CHECK UL1 CIRCUIT • ACTIVATION: A problem has been detected in the front unloader (UL1) coil circuit. If this alarm is activated while the control system is calling for UL1 to be energized, the circuit is detected shorted. If this alarm occurs at any other time, the circuit is detected open.

  • Page 163: Check Ul2 Circuit

    Alarm Steps Alarm/Cause Corrective Action 00086 CHECK UL2 CIRCUIT • ACTIVATION: A problem has been detected in the rear unloader (UL2) coil circuit. If this alarm is activated while the control system is calling for UL2 to be energized, the circuit is detected shorted. If this alarm occurs at any other time, the circuit is detected open.

  • Page 164: Chk Afa Solenoid Circuit

    Alarm Steps Alarm/Cause Corrective Action 00090 CHK AFA SOLENOID CIRCUIT • ACTIVATION: A problem has been detected in the AutoFresh Air Exchange relay coil circuit . If this alarm is activated while the control system is calling for AFAR to be energized, the circuit is detected shorted.

  • Page 165: Check Startup Buzzer

    Alarm Steps Alarm/Cause Corrective Action 00093 CHECK STARTUP BUZZER • ACTIVATION: The Buzzer (B) circuit is shorted. (The Buzzer output from the microprocessor [PCM-23 to 3MM15] is negative, so the circuit will not be shorted to ground, but is shorted either within the Buzzer itself, or to a positive wire.) •...

  • Page 166: 00121 Check Ambient Air Sensor 7−41

    Alarm Steps Alarm/Cause Corrective Action 00121 CHECK AMBIENT AIR SENSOR • ACTIVATION: Ambient Air Temperature Sensor (ATA) is not within the range of -53 to +158°F (-47° to +70° C). • UNIT CONTROL: Alarm and a value of 122°F (50°C) will be used for any calculations. •...

  • Page 167: Check Supply Air Sensor

    Alarm Steps Alarm/Cause Corrective Action 00123 CHECK SUPPLY AIR SENSOR • ACTIVATION: Supply Air Temperature Sensor (SAT) is not within the range of -53 to +158°F (-47 to +70° C). • UNIT CONTROL: If Alarm 00122 is not active, the Functional Parameter Temperature Control is set for Supply Air and the setpoint is in the perishable range: alarm and switch to return air control.

  • Page 168: 00125 Check Comp Discharge Sensor

    Alarm Steps Alarm/Cause Corrective Action 00125 CHECK COMP DISCHARGE SENSOR • ACTIVATION: Compressor Discharge Temperature Sensor (CDT) is not within the range of -40° to +392°F (-40° to +200°C). • UNIT CONTROL: Alarm Only. • RESET CONDITION: Auto reset when sensor is in range or, alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.

  • Page 169: Check Suction Temp Sensor

    Alarm Steps Alarm/Cause Corrective Action 00127 CHECK SUCTION TEMP SENSOR • TRIGGER–ON: Compressor Suction Temperature Sensor (CST) is not within the range of −53 to +158°F (−47 to +70° C.) • UNIT CONTROL: Alarm only. • RESET CONDITION: Auto reset or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.

  • Page 170: Check Engine Rpm Sensor

    Alarm Steps Alarm/Cause Corrective Action 00130 CHECK ENGINE RPM SENSOR • ACTIVATION: If ambient temperature is above 32°F (0°C), and this is the second or third start attempt, and the engine oil pressure switch is closed (oil pressure good), and engine speed is sensed at less than 1000;...

  • Page 171: Check Evap Temp Sensor

    Alarm Steps Alarm/Cause Corrective Action 00131 CHECK EVAP TEMP SENSOR • TRIGGER–ON: Evaporator Outlet Temperature Sensor (EVOT) is not within the range of −53 to +158°F (−47 to +70°C.) • UNIT CONTROL: Alarm only and superheat for EVXV will be calculated using SAT or DTT if alarm 00123 (Check Supply Air Sensor) is active.

  • Page 172: Check Defrost Term 2 Sensor

    Alarm Steps Alarm/Cause Corrective Action 00132 CHECK DEFROST TERM 2 SENSOR NOTE: The APX control system uses one Defrost Termination Sensor (DTT) and that sensor will activ- ate this “CHECK DEFROST TERM 2 SENSOR” alarm. • ACTIVATION: Defrost Termination Temperature Sensor (DTT) is not within the range of -58 to +266°F (-50 to +130°C).

  • Page 173: Check Remote Temp Sensor 1

    Alarm Steps Alarm/Cause Corrective Action 00133 CHECK REMOTE TEMP SENSOR 1 00134 CHECK REMOTE TEMP SENSOR 2 • ACTIVATION: Remote Temperature Sensor (REMSN1or REMSN2) is not within the range of -53 to +158°F (-47 to +70°C). • UNIT CONTROL: Alarm only. •...

  • Page 174: P00141 Pretrip Stopped By User 7−49

    Alarm Steps Alarm/Cause Corrective Action P00141 PRETRIP STOPPED BY USER • ACTIVATION: Pretrip cycle was stopped by user before the Pretrip cycle ended automatically. • UNIT CONTROL: Alarm Only. • RESET CONDITION: Alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.

  • Page 175: P00148 Check Sv1 Circuit 7−50

    Alarm Steps Alarm/Cause Corrective Action P00148 CHECK SV1 CIRCUIT • ACTIVATION: The circuit current draw is outside the normal range. • UNIT CONTROL: Pretrip will fail in test 2 and display “PRETRIP FAIL AND COMPLETED”. • RESET CONDITION: Auto reset if Pretrip is started again, or Alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.

  • Page 176: P00154 Check Supply Air Sensor 7−51

    Alarm Steps Alarm/Cause Corrective Action P00154 CHECK SUPPLY AIR SENSOR • ACTIVATION: Supply Air Temperature Sensor (SAT) is not within the range of -53 to +158°F (-47 to +70°C). • UNIT CONTROL: Pretrip will fail and display “PRETRIP FAIL AND COMPLETED”. •...

  • Page 177: P00158 Check Ambient Air Sensor 7−52

    Alarm Steps Alarm/Cause Corrective Action P00158 CHECK AMBIENT AIR SENSOR • ACTIVATION: Ambient Air Temperature Sensor (AAT) is not within the range of -53 to +158°F (-47 to +70°C). • UNIT CONTROL: Pretrip will fail and display “PRETRIP FAIL AND COMPLETED”. •...

  • Page 178: P00164 Check Ul2 Circuit 7−53

    Alarm Steps Alarm/Cause Corrective Action P00164 CHECK UL2 CIRCUIT • ACTIVATION: The circuit current draw is outside the normal range. • UNIT CONTROL: Pretrip will fail in test 2 and display “PRETRIP FAIL AND COMPLETED”. • RESET CONDITION: Auto reset if Pretrip is started again, or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.

  • Page 179: P00174 Check Low Speed Rpm 7−54

    Alarm Steps Alarm/Cause Corrective Action P00174 CHECK LOW SPEED RPM • ACTIVATION; in Test #7: With the CAN calling for low speed, engine speed is NOT between: 1200 and 1500 rpm. in Test #9: 15 seconds after the high speed test, engine rpm has not dropped from the high speed test to 1200 to 1500 rpm.

  • Page 180: P00177 Check Exv (Evxv) Superheat 7−55

    Alarm Steps Alarm/Cause Corrective Action P00177 CHECK EXV (EVXV) SUPERHEAT • TRIGGER–ON: With the unit running in Test 11, after the control system closes the EVXV to 0%, evaporator pressure fails to drop by 20 psig (1.36 bar) or fails to go below 0 psig / bar OR the EVXV appears not to be opening to the full capacity position.

  • Page 181: P00178 Check Ul1

    Alarm Steps Alarm/Cause Corrective Action P00178 CHECK UL1 • ACTIVATION: The pressure differential between suction and discharge pressures did not change as expected when the Front Unloader (UL1) was de-energized / loaded (discharge pressure should rise and suction pressure should drop) or when it was energized / unloaded (discharge pressure should drop and suction pressure should rise.

  • Page 182: P00180 Check Suction Mod Valve 7−57

    Alarm Steps Alarm/Cause Corrective Action P00180 CHECK SUCTION MOD VALVE • ACTIVATION: With the unit running in Pretrip Test #10, after the microprocessor attempts to close CSMV, the suction pressure fails to drop below 4in. Hg (-0.14 bar). • UNIT CONTROL: Pretrip will fail and display “PRETRIP FAIL IN TEST 10”. •...
  • Page 183 Alarm Steps Alarm/Cause Corrective Action P00181 CHECK SV4 VALVE • ACTIVATION: Suction pressure did not rise within range & discharge pressure did not drop within range when SV4 was energized (opened) • UNIT CONTROL: Alarm Only • RESET CONDITION: Auto reset if Pretrip is started again, or Alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 184 Alarm Steps Alarm/Cause Corrective Action P00191 CHECK UL2 • ACTIVATION: The pressure differential between suction and discharge pressures did not change as expected when the Rear Unloader (UL2) was de-energized / loaded (discharge pressure should rise and suction pressure should drop) or when it was energized / unloaded (discharge pressure should drop and suction pressure should rise.
  • Page 185 Alarm Steps Alarm/Cause Corrective Action P00194 HIGH SUCTION PRESSURE • ACTIVATION: This alarm is generated during Test 4 of Cool Pretrip. Suction pressure is higher than normal. • UNIT CONTROL: Alarm Only • RESET CONDITION: Auto reset if Pretrip is started again, or Alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 186 Alarm Steps ALARM / CAUSE CORRECTIVE ACTION P00196 HIGH DISCHARGE PRESSURE • ACTIVATION: This alarm is generated during Test 4 of Cool Pretrip. Discharge pressure is higher than normal. (“Normal” discharge pressure for systems operating in the Cool Mode can be estimated by taking the temperature of the air entering the condenser coil (Ambient Air Temperature AAT) and adding 305F (16.65 C) to it, then looking at a pressure temperature chart-see Table 8−6- for the corresponding pressure.)
  • Page 187 Alarm Steps Alarm/Cause Corrective Action P00198 LOW DISCHARGE PRESSURE • ACTIVATION: In Pretrip heat, the compressor discharge pressure did not rise to normal. (“Normal” discharge pressure for systems operating in Pretrip heat can be estimated by adding 80 psig (5.5bars) toe the saturation temperature of the air entering the condenser (ATS reading). •...

  • Page 188: Check Refrigerant Charge

    Alarm Steps Alarm/Cause Corrective Action P00200 CHECK UL1 CYLINDERS • ACTIVATION: A problem has been detected inside the front cylinder head of the compressor with a cylinder suction valve, cylinder discharge valve, head gasket or valve plate gasket. • UNIT CONTROL: Alarm Only •...
  • Page 189 Alarm Steps Alarm/Cause Corrective Action P00202 HIGH SIDE LEAK • ACTIVATION: Refrigerant pressure is leaking past one of the components in the high pressure side of the refrigeration system into the low pressure side. • UNIT CONTROL: Alarm Only • RESET CONDITION: Auto reset if Pretrip is started again, or Alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 190 Alarm Steps Alarm/Cause Corrective Action P00204 LOW SUCTION PRESSURE • ACTIVATION: Suction Pressure is less than -10inHg (-0.34 bar) for more than 30 continuous sec- onds, or less than -16inHg (-0.54 bar) for more than 5 seconds at any time during Pretrip. •...
  • Page 191 Alarm Steps Alarm/Cause Corrective Action P00205 CHK DEFROST TERM 2 SENSOR NOTE: The APX control system uses one Defrost Termination Sensor (DTT) and that sensor will trigger this “CHK DEFROST TERM 2 SENSOR” alarm. • ACTIVATION: Defrost Termination Temperature Sensor is not within the maximum range of -53°F to +158°F (-47°C to +70°C) •...
  • Page 192 Alarm Steps Alarm/Cause Corrective Action 00225 GENERAL MAINTENANCE DUE • ACTIVATION: The General Maintenance Hour Meter time has expired. • UNIT CONTROL: Alarm Only. Alarm Light will NOT be turned on. • RESET CONDITION: Alarm may be manually reset using the display mounted keys. Check Unit Maintenance Records Schedule unit into service facility for Must be done soon!
  • Page 193 Alarm Steps Alarm/Cause Corrective Action 00227 SERVICE SOON-PM #2 DUE • ACTIVATION: The Maintenance Hour Meter #2 time has expired. • UNIT CONTROL: Alarm Only. Alarm Light will NOT be turned on. • RESET CONDITION: Alarm may be manually reset using the display mounted keys. Check Unit Maintenance Records Schedule unit into service facility for Must be done soon!
  • Page 194 Alarm Steps Alarm/Cause Corrective Action 00229 SERVICE SOON-PM #4 DUE • ACTIVATION: The Maintenance Hour Meter #4 time has expired. • UNIT CONTROL: Alarm Only. Alarm Light will NOT be turned on. • RESET CONDITION: Alarm may be manually reset using the display mounted keys. Check Unit Maintenance Records Schedule unit into service facility for Must be done soon!
  • Page 195 Select the correct model number in the “MODEL NUMBER” Configuration. If correct model number is b. Enter correct Model Number. not found, Install (or have Carrier Transicold dealer install) latest software revision. Reset Microprocessor a. Place the START/RUN-OFF switch The microprocessor powers up OK and the latest setpoint appears in the display.
  • Page 196 Alarm Steps Alarm/Cause Corrective Action 00237 FUNCTION PARAMETERS ERROR • ACTIVATION: There is an error in one or more of the Functional Parameters that are stored in the main microprocessor memory. • UNIT CONTROL: Incorrect Functional Parameter(s) will be automatically set for default value. •...
  • Page 197 Alarm Steps Alarm/Cause Corrective Action 00238 CONFIGURATIONS ERROR • ACTIVATION: There is an error in the Configuration settings that are stored in the main microprocessor memory. • UNIT CONTROL: Incorrect Configuration(s) will be automatically set for default value. • RESET CONDITION: Auto reset when valid Configuration(s) are entered, or alarm may be manually reset by turning the unit off, then back on again NOTE: Follow the steps below until a problem is found.
  • Page 198 Continue with the steps below as necessary. Check Microprocessor Software Revision Check microprocessor software Unit should have the software upgraded to the latest version, provided for Carrier Transicold dealers on the TransCentral site. Reset Microprocessor a. Place the START/RUN-OFF switch The microprocessor powers up OK and the latest setpoint appears in the display.
  • Page 199 Alarm Steps Alarm/Cause Corrective Action 00248 CONFIGURATION ERROR • ACTIVATION: EEPROM Configuration is out of range. • UNIT CONTROL: Shutdown and alarm. • RESET CONDITION: Auto reset only when valid info is entered. NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, clear the alarm(s).
  • Page 200 Continue with the steps below as necessary. Check Software Revision Check microprocessor software Unit should have the software upgraded to the latest version, provided for Carrier Transicold dealers on the TransCentral site. Reset Microprocessor a. Place the START/RUN-OFF switch The microprocessor powers up OK and the latest setpoint appears in the display.
  • Page 201 Alarm Steps Alarm/Cause Corrective Action 03001 ENGINE LOAD CALIBRATION • ACTIVATION: Activate alarm if: Condition 1 = At engine start if the engine throttle sensor value is less than 90 %. Condition 2 = After start if the sensor value does not drop below 90% within 5 seconds. Condition 3 = At engine shutoff if the sensor value does not drop below 10% within 5 seconds.
  • Page 202 Alarm Steps Alarm/Cause Corrective Action 05012 CHECK ENCU POWER CIRCUIT NOTE When operation of the engine is required the main microprocessor will provide a signal from terminal 3MM−9. This signal has been referred to as the “run relay”, based on pre−APX control systems that had an actual relay in place.
  • Page 203 Alarm Steps Alarm/Cause Corrective Action 05013 CHECK CLUTCH CIRCUIT • ACTIVATION: A problem has been detected in the clutch coil (CLH) circuit. If this alarm is activated while the control system is calling for CLH to be energized, the circuit is detected shorted. If this alarm occurs at any other time, the circuit is detected open.
  • Page 204 Alarm Steps Alarm/Cause Corrective Action 05014 CHECK STARTER SOLENOID CIRCUIT • ACTIVATION: A problem has been detected in the starter solenoid coil (SS) circuit. If this alarm is activated while the control system is calling for SS to be energized, the circuit is detected shorted. If this alarm occurs at any other time, the circuit is detected open.
  • Page 205 Alarm Steps Alarm/Cause Corrective Action 05017 CHECK GLOW PLUG RELAY • ACTIVATION: A problem has been detected in the engine preheat enable circuit (EPHT). If this alarm is activated when the circuit is energized, the circuit is detected shorted. If this alarm is activated at any other time, the circuit is detected open.
  • Page 206 Alarm Steps Alarm/Cause Corrective Action 20100 NO COMM FROM MICRO TO DISPLAY NOTE This alarm will be available in the inactive alarm list and download only. It is an in- dication that an intermittent failure is occurring, causing a break in the circuit suffi- cient to activate the alarm.
  • Page 207 Alarm Steps Alarm/Cause Corrective Action 21100 NO COMM FROM ANY BOARD TO MAIN MICRO NOTE This alarm will be available in the inactive alarm list and download only. It is an in- dication that an intermittent problem has occurred and a careful diagnosis is re- quired.
  • Page 208 Alarm Steps Alarm/Cause Corrective Action 22101 SENSOR INPUT VOLTAGE LOW INP1 NOTE This alarm is an indication that there is a short in the transducer or current trans- former wiring and the voltage supply in the main microprocessor is overloaded. •...
  • Page 209 Alarm Steps Alarm/Cause Corrective Action 22102 SENSOR INPUT VOLTAGE HIGH INP1 NOTE This alarm is an indication that there is a short in the transducer or current trans- former wiring from another (nominal 12 VDC) circuit into the transducer or CT sensor circuit.
  • Page 210 Alarm Steps Alarm/Cause Corrective Action 25100 NO COMM FROM MICRO TO STP1 • ACTIVATION: Main microprocessor cannot communicate with the stepper valve module over the CAN bus. • UNIT CONTROL: Shut down and alarm. The stepper valve module status LED may be on steady green (not pulsing) or red.
  • Page 211 Alarm Steps Alarm/Cause Corrective Action 26100 NO COMM FROM MICRO TO ENCU • ACTIVATION: Main microprocessor cannot communicate with the engine control unit over the CAN bus. • UNIT CONTROL: Shut down and alarm. • RESET CONDITION: Auto reset when CAN communication is restored or alarm reset or alarm may be manually reset by turning the unit off, then back on again..

  • Page 212: Section 8 − Service

    SECTION 8 − SERVICE PARAGRAPH NUMBER Page SECTION LAYOUT ............. . . 8−1 SCHEDULED MAINTENANCE .

  • Page 213: Figure 8−24 Compressor

    START/ ert gas brazing procedures is mandatory for RUN-OFF switch is in the START/RUN posi- all Carrier Transicold refrigeration units; tion. Also, the unit may be fitted with two otherwise compressor failure will occur.

  • Page 214: Table 8−1 Maintenance Schedule

    Cooling 1 Check coolant change interval (refer to Section e. of this table). 8.5.14 System If replacement is not required, check antifreeze concentration using a refractometer (Carrier Transicold part number 07-00435-00) 2 Clean condenser/radiator surfaces 8.5.14 3 Check water pump...

  • Page 215: Table 8−2 Pre-Trip Inspection

    Table 8−1 Maintenance Schedule - Continued Reference System Operation Section b. Every Service Interval or Yearly - Continued Refrigeration 1 Check compressor drive coupling System 2 Check air switch and calibrate as necessary 8.9.13 3 Check & clean the evaporator coil and all defrost drain hoses 8.9.1 4 Install manifold gauge set and check refrigerant pressure Check...
  • Page 216 Table 8−2 Pre-Trip Inspection - Continued IMMEDIATELY AFTER STARTING ENGINE ADJUST Check fuel lines and filter for leaks Check oil lines and filter for leaks Check coolant hoses for leaks Check exhaust system for leaks Check condenser fan for proper airflow. Check evaporator fan for proper airflow.

  • Page 217: Figure 8−1 Automatic Fresh Air Exchange

    8.4 EXTERNAL SURFACE SERVICE 2. Remove cover in accordance with preceding step. Loosen innermost cover mounting nut to unlock and remove remaining cover hardware. Procedures for servicing or maintaining the automatic fresh air exchange, grille, surround, doors, door latches 3. Disconnect the solenoid connector, remove hard- and display module are provided in the following ware (7) attaching old solenoid and bring new solen- sub-paragraphs.

  • Page 218: Mounting Bolts

    8.4.3 Surround Removal 2. Slide cable from paddle and rotate other end out of latch assembly. NOTE NOTE It is not necessary to remove the grille before The side door lower cable is inserted through removing the surround. the upper cable eyelet. The lower cable is to be removed to gain access to the upper cable.

  • Page 219: Figure 8−5 Fuel System Diagram

    SPIN–ON FILTER SYSTEM SUCTION SIDE FILTER SYSTEM 1. Fuel Tank 9. Injection Pump 2. Supply Line 10. Injector Nozzles 3. Electric Pump 11. Bleed Screw 4. Mechanical Pump 12. Return Line 5. Water Drain Valve 13. Level Sensor 6 Heater 14.

  • Page 220: Figure 8−7 Mechanical Fuel Pump

    sistance) is felt. This may take up to 200 strokes. This c. Remove banjo fitting (Item 4) and let it hang loose. will indicate fuel flow. Discard copper rings (Item 3) and replace with new ones. c. Continue to pump S-L-O-W-L-Y (up/down once per d.
  • Page 221 STOP/RUN-OFF switch in the OFF position. than 5VDC) at 2MM-13. NOTE If required, use a lock collar wrench (Carrier e. if checks in the preceding step are OK, remove the Transicold part Number 07–00423–00) to fuel level sensor, focus tube and gaskets. With the loosen the collar or vent cap.

  • Page 222: Figure 8−10 Fuel Level Sensor

    1. Fuel Level Sensor 10. Fuse (FLS = 3A) 2. Gasket 11. White Wire (Connection C) 3. Focus Tube 12. Black Wire (Connection B) 4. Sensor Flange 13. Red Wire (Connection A) 5. Fuel Level Sensor Flange 14. Ground (Shield) 6.

  • Page 223: Figure 8−11 Engine Oil Level

    4 After checking or adding oil as necessary, ensure CAUTION cap is threaded back onto oil fill tube. When changing oil filter, the new filter Dipstick should be primed (partially filled) with clean oil if possible. If the filter is not primed, the engine may operate for a period with no oil supplied to the bearings.

  • Page 224: Figure 8−13 Engine Preheater

    Torque flange 1. Procure a Rack Position Sensor Calibration Kit (see bolts to 15 to 20 ft/lbs (20.3 to 27.1 nm). Figure 8−15) from Carrier Transicold Service Engin- eering. 6. Start unit and run Pretrip to check operation.

  • Page 225: Figure 8−16 Suction Mod Valve Screen

    2. Place the START/RUN−OFF switch in the OFF posi- 4. Place the J1 jumper switch in the open position and tion. Disconnect the ENCU connector and plug the shut down the unit by placing the RUN/START− OFF adaptor harness between the ENSCU and harness switch in the OFF position.

  • Page 226: Figure 8−18 Radiator Assembly

    NOTE Only clean water should be used to flush the cooling system. Do not use any radiator flush or detergents to clean the radiator. 5. Start the engine and drain system while warm. Rinse system three times after it has cooled down. Refill system with water.

  • Page 227: Figure 8−19 Water Pump/Alternator Belt

    Do not use pry bar or excessive force as it may cause bearing failure. Check belt tension, using belt tension tool Carrier Transicold part number The power train (see Figure 2−4) is a belt drive system 07-00203-00 or 07-00253-00, in accordance with the that transfers power from the engine to the condenser following chart.

  • Page 228: Figure 8−21 Lower Belt

    Pivot idler to place tension on belt and set belt ten- b. Match mark drive adapter (1) to flywheel (6) at posi- sion, using belt tension tool Carrier Transicold part tion shown (5) for ease of reassembly. number 07-00203-00 or 07-00253-00, in accordance with the following chart.

  • Page 229: Figure 8−22 Upper Power Train

    1. Condenser Fan 15. Armature Retaining Bolts & Washers 2. Clutch 16. Key (Round End) 3. Fanshaft 17. Armature 4. Upper Belt 18. Rotor Retaining Nut 5. Upper Idler 19. Rotor 6. Gear Box 20. Rotor Spacer 7. Evaporator Fan 21.
  • Page 230 Reinstall by sliding belt into clutch groove, reposition fan and secure with the three bolts. Torque bolts 18 to c. Place the three pins of a spanner wrench (Carrier 22 ft/lbs (24.4 to 29.8 Nm). Transicold part number 07-00396-01) into the holes f.
  • Page 231 8.6.5 Evaporator Fan f. Check oil level in fanshaft. With the vent connection at the top, oil is to be at the level of the oil level plug loc- To remove and reinstall the evaporator fan (Item 7, ated in the housing. Add oil as required , apply thread Figure 8−22) do the following: sealer and re-install level plug.

  • Page 232: Figure 8−23 Refrigerant System Service Equipment

    8.7 REFRIGERANT SYSTEM SERVICE NOTE To avoid damage to the earth’s ozone layer, use a Service of the refrigerant system includes: connection refrigerant recovery system whenever removing of refrigerant system equipment, servicing the refrigerant from a refrigeration system. When refrigerant charge, leak checking and evacuation. working with refrigerants you must comply with all Procedures for refrigerant system service are provided local government environmental laws, U.S.A.
  • Page 233 c. Removing Charge 3. Frontseat the liquid line service valve. To remove the refrigerant charge, proceed as follows: 4. Shutdown the unit when the suction pressure drops to 2 psig (0.2 bar). There should be very little refrigerant 1. If the system is in operating condition, it will be quicker remaining in the low side of the system at this point.
  • Page 234 5. After making necessary repairs, leak check and NOTE evacuate the compressor. (Refer to Sections 8.7.3 It is possible that all the required liquid may not and 8.7.4.) be pulled into the receiver, as outlined in step 4. In this case, add the additional refrigerant in ac- f.
  • Page 235 2. Connect refrigerant system equipment if not already c. Leak Checking With Low Side Pumped Down connected. Refer to Figure 8−23 The low side of the system must be leak checked once it is closed and all repairs complete. CAUTION 1.
  • Page 236 Only a refrigerant cylinder containing system include a good vacuum pump R404A should be connected to this refriger- (5 cfm/8m#H volume displacement, Carrier ation unit in order to pressurize the system. Transicold part number 07-00176-11) and a However, dry nitrogen may be used to in-...
  • Page 237 Charge Mode during the process, switch it back to the Section 5.2.5.) If the control system switches to “RECOVER/LEAK CHK/EVAC MODE”. Charge Mode during the process, switch it back to the “RECOVER/LEAK CHK/EVAC MODE”. 5. Backseat (turn counter-clockwise) the liquid line ser- vice valve, suction service and discharge service 5.
  • Page 238 7. Start unit and check the refrigerant charge. Refer to e. Loosen the suction and discharge service valve Section 8.7.2. mounting bolts. Tap the valve bodies to break the seal and then remove bolts. 8.8 COMPRESSOR AND UNLOADER SERVICE f. Disconnect all low voltage connectors (UL1, UL2, 8.8.1 Repair or Replacement Determination CDT, CDP &...
  • Page 239 4 − Refer to Section 8.8.6 for reassembly. 7 − Torque 26 to 30 ft/lbs (35.3 to 40.7 Nm) Torque 30 ft/lbs (40.7 Nm) then, bend locking tabs against flat of bolt head Torque 26 to 30 ft/lbs (35.3 to 40.7 Nm) 13 −...

  • Page 240: Figure 8−25 Cylinder Head & Valve Plate

    Typical Arrangement - Center Head Shown 1. Capscrew 7. Discharge Valve 2. Cylinder Head 8. Valve Plate 3. Cylinder Head Gasket 9. Valve Plate Gasket 4. Capscrew 10. Suction Valve 5. Lockwasher 11. Suction Valve Spring 6. Discharge Valve Backer 12.
  • Page 241 Figure 8- -27 Oil Pump & Bearing Head Assembly pacity and possibly cause internal com- pressor damage. For this reason, Carrier Transicold re--manufactured compressors now contain a reduced oil charge to compensate for oil remaining in the system. A level...
  • Page 242 1. Check compressor oil level, refer to preceding step a. If the oil level is above the maximum mark on the Use only Carrier Transicold approved Poly- crankcase, oil must be removed from the compres- ol Ester Oil (POE). Buy quantities of one gal- sor.

  • Page 243: Figure 8−29 Unloader Coil

    11. Plunger body (with flat side toward the head) and, using un- 5. Bolts, Valve Body (3) 12. Plunger Spring loader ring pliers (Carrier Transicold part number 6. Washers (3) 13 Installation/Removal 07-00223-00) compress the unloader ring while in- 7. Piston Tool serting the unloader into the compressor head.
  • Page 244 Carrier Transicold refrigeration units; otherwise compressor failure will occur. Clean the evaporator coil on a regular basis, not only to...

  • Page 245: Figure 8−30 Condenser/Radiator Assembly

    15. Refill engine coolant. Refer to Section 8.5.14. Condenser/Radiator Assembly Condenser Coil Mounting Brackets Ambient Air Temperature Sensor (ATT) Radiator Front Condenser Frame Rear Condenser Frame Gasket (Typical) 10. Rear Condenser Frame Mounting Bolts Radiator Mounting Brackets 11. Condenser/Radiator Assembly Mounting Bolts Condenser Coil Figure 8- -30 Condenser/Radiator Assembly 8.9.3 Filter-Drier...

  • Page 246: Figure 8−31 Condenser Pressure Control Solenoid Valve (Sv1)

    S If suction and discharge pressures remain low 8.9.5 Condenser Pressure Control Solenoid Valve (SV1). and the receiver level does not drop, the valve may be inoperative and can be checked by the following method. 1. Verify the solenoid coil has proper voltage and is en- ergized in heating and defrosting.

  • Page 247: Figure 8−32 Sv-2 And

    7. Piston 8.9.7 Stepper Test Harness 4. Plunger Spring 8. Body A stepper test harness (Carrier Transicold part number (07−00515) is available for testing the compressor suction modulation valve (CSMV) and evaporator Figure 8−32 SV-2 and SV-4 expansion valve (EVXV).

  • Page 248: Figure 8−33 Stepper Test Harness

    The valve stepper motor may be tested using a stepper motor drive tester or ohmmeter. 1. To test with a stepper motor drive tester (Carrier Transicold part number 07-00375-00), connect the 4 pin test cable supplied with the tester to the valve con- Figure 8−33 Stepper Test Harness...

  • Page 249: Figure 8−36 Evaporator Expansion Valve

    d. Replacing The Internal Motor/Piston Assembly 1. Pump down the low side. Refer to section 8.7.2. 2. Remove internal motor/piston assembly and replace with a new assembly and gasket. The motor/piston assembly should be set to 100% open when received from the warehouse.

  • Page 250: Figure 8−37 Evaporator Expansion Valve

    1. To test with a stepper motor drive tester (Carrier d. Replacing Expansion Valve & Screen Transicold part number 07−00375−00), connect the 5 pin test cable to the valve connector (see 1.

  • Page 251: Figure 8−39 Typical Setup For Testing High Pressure Switch

    CAUTION Unit uses R404A and POE oil. The use of in- ert gas brazing procedures is mandatory for all Carrier Transicold refrigeration units; otherwise compressor failure will occur. For more information Refer to Technical Procedure 98-50553-00 Inert Gas Brazing. b. Using a pipe cutter, cut the valve stub-outs and un- braze the remaining stub-out from the connecting copper.

  • Page 252: Figure 8−40 Defrost Air Switch Test Setup

    If required, power the transducer circuit by placing the unit in PC Mode, refer to Section 5.3.2. Check Volt- DAS settings using a Magnehelic gauge (Carrier age to transducer connector. Voltage reading be- Transicold part number 07-00177) or similar instru- tween connector position 2 (positive) and position 1 ment as follows.

  • Page 253: Figure 8−41 Power Control Module

    k. After switch is adjusted, place a small amount of d. Lift the 4 cable terminals up & off stud-posts. Remove paint or fingernail polish on the adjusting screw so loose nuts, slide plastic bushings & cables/terminals that vibration will not change switch setting. out of mounting hole in box .

  • Page 254: Figure 8−43 Light Bar Connections

    8.10.5 Alternator (ALT) b. Brush Replacement 1 Ensure the unit will not start automatically by dis- abling any two way communication, placing the CAUTION STOP/RUN-OFF switch in the OFF position and re- moving the negative battery cable. 2 Remove the screws holding the regulator/brush as- Observe proper polarity when installing sembly.

  • Page 255: Table 8−4 Sensor Resistance

    Table 8−4 Sensor Resistance Sensors AAT, RAT, SAT, ENCT, DTT, CST, EVTO, REMSN 1 & 2, °F Ohms °F Ohms °F Ohms °F Ohms 336,500 -7.8 49,060 24.4 10,250 56.7 2,809 -38.9 312,600 -6.7 46,230 25.6 9,760 57.8 2,697 -37.8 290,600 -5.6 43,580...

  • Page 256: Table 8−5 Sensor Resistance (Cdt)

    Table 8−5 Sensor Resistance (CDT) °C °F Ohms °C °F Ohms °C °F Ohms °C °F Ohms 3,360,000 325,860 40.0 53,330 101.7 215 6,510 -38.9 3,121,020 307,970 41.1 51,010 104.4 220 6,000 -37.8 2,900,710 291,180 42.2 48,800 107.2 225 5,540 -36.7 2,697,500 275,410...

  • Page 257: Table 8−6 Temperature Pressure Chart

    Table 8−6 Temperature Pressure Chart Temperature Pressure Temperature Pressure PSIG PSIG 72.5 75.6 78.8 12.9 82.1 16.3 85.5 17.7 89.0 92.5 19.2 96.2 20.7 99.9 22.3 23.9 103.7 25.6 115.4 1.88 27.3 126.1 29.1 137.4 30.9 10.3 149.4 32.8 11.2 162.1 34.8 12.1...
  • Page 258 SECTION 9 − UNIT TROUBLESHOOTING PARAGRAPH NUMBER Page ENGINE ............... . . 9−1 9.1.1 Engine Will Not Start .

  • Page 259: Unit Troubleshooting

    UNIT TROUBLESHOOTING CAUTION Under no circumstances should anyone attempt to repair sealed module internal components. Should a problem develop with these components, contact your nearest Carrier Transicold dealer for replacement. NOTE Run a Pretrip and check all active alarms before continuing with troubleshooting.
  • Page 260 Indication/Trouble Possible Causes Action/Refer- ence Section 9.1.2 Engine Starts Then Stops Fuel supply restricted Check No fuel in tank Check Leak in fuel system Check Faulty fuel control operation Engine Manual Plugged fuel filter 8.5.5 Plugged inlet screen to mechanical pump. 8.5.3 Plugged inlet screen to electric pump.

  • Page 261: Figure 8−42 Alternator

    Indication/Trouble Possible Causes Action/Refer- ence Section 9.1.6 Miscellaneous Engine Troubleshooting Air cleaner or hose restricted 8.5.10 Air in fuel system 8.5.2 Air vent restricted in fuel tank cap Clean Restricted fuel lines Engine Manual Defective fuel injection pump Engine Manuall Loss of power Defective injector(s) or incorrect type Engine Manual...

  • Page 262: Refrigeration / Temperature Control

    9.3 REFRIGERATION / TEMPERATURE CONTROL Indication/Trouble Possible Causes Action/Refer- ence Section 9.3.1 Unit Will Not Cool Compressor drive defective 8.6.1 Compressor malfunction Compressor defective 8.8.1 A defrost cycle did not terminate. Check DTT 8.10.7 Abnormal pressure 9.3.9 Refrigeration system Solenoid valve malfunction 8.9.5/8.9.6 Clutch failure 8.6.4...
  • Page 263 Indication/Trouble Possible Causes Action/Refer- ence Section 9.3.7 Unit Will Not Terminate Heating Temperature sensor malfunction 8.10.7 Unit fails to stop heating Incorrect temperature scale, check whether micropro- Check cessor is set for °C or °F 9.3.8 Defrost Cycle Malfunction Defrost timer has not expired Check/Reset Defrost air switch (DAS) malfunction 8.9.13...
  • Page 264 INDICATION/ Action/Refer- Possible Causes TROUBLE ence Section 9.3.9 Abnormal Pressure - Cooling - Continued Suction and discharge Compressor valves defective 8.8.1 pressures tend to equalize when unit is operating Compressor gasket(s) defective 8.8.1 9.3.10 Abnormal Pressure - Heating Solenoid valve malfunction 8.9.5/8.9.6 Condenser fan/upper belt defective 8.6.3...
  • Page 265 Indication/Trouble Possible Causes Action/Refer- ence Section 9.3.14 Compressor Suction Modulation Valve (CSMV) Malfunction Coil not seated properly Check Coil defective 8.9.8 CSP defective 8.9.12 CSMV not controlling correctly CST defective 8.10.7 Damaged or corroded electrical connections at valve or Check/Repair 9.3.15 Solenoid Valve Malfunction No power to valve Check alarms...
  • Page 266 SECTION 10 − WIRING PARAGRAPH NUMBER Page 10.1 HARNESS CONNECTOR WIRING ..........10−1 10.2 SPLICE POINTS .
  • Page 267 SECTION 10 WIRING 10.1 HARNESS CONNECTOR WIRING NOTE All illustrations provided in this Section are looking at the connector connection end (with the wires in the back). 1MM − BLACK PCM − WHITE Component Terminal PCM−19 Component Terminal SP−1 SP−8 3 (14) 1SVM−1 SATPWR−B...
  • Page 268 10.1 HARNESS CONNECTOR WIRING − Continued 2MM − BLACK 3MM − GRAY Component Terminal Component Terminal AAT−A SV1−A (+) AAT−B SV2−A (+) RAT−A SV4−A (+) RAT−B UL1−A (+) SAT−A LB−H SAT−B UL2−A (+) EVOT−A ENCU−44 CDT−A FP−+ CSP−3 CLH−A (+) CDP−3 SS−A DTT−B...
  • Page 269 10.1 HARNESS CONNECTOR WIRING − Continued 2SVM − BLUE 1SVM − BLACK Component Terminal Component Terminal CSMV−A 1MM−3 CSMV−B DM−2 CSMV−C DM−1 CSMV−D DM−6 EVXV−E SP−1 EVXV−A 1MM−8 EVXV−B SP−4 EVXV−C DM−10 EVXV−D Unused terminals: None PCM−18 Units With DS Connector = DS−A Units Without DS Connector = REM−A Units With DS Connector = REM−A Units Without DS Connector = REM−C...
  • Page 270 10.1 HARNESS CONNECTOR WIRING − Continued ENCU DM − BLACK Component Terminal 1SVM−3 1SVM−2 SATCOM−B 1SVM−4 J1−A SATCOM−C 1SVM−8 SATCOM−A Component Terminal Unused terminals: 4,5,9,11,13,14 ENCT−B ENSSN−2 ENCT−A RPS−3 ENOPS−A ENOPS−B ENCU GND A ENSSN−1 SP−6 SP−1 SP−4 SP−27 (If equipped with MAP) RPS−2 (If not) MAP−3 (If equipped with MAP)
  • Page 271 10.1 HARNESS CONNECTOR 10.2 SPLICE POINTS − Continued WIRING − Continued Splice Point No. Component AFAS−B (negative) CLH− B (negative) GND1−RING1* SV1−B (negative) SP−3 (Ground) SV2−B (negative) SV4−B (negative) FH1−B (FH to FHTS to FH1−A) FH2−B (FH to FHTS to FH2−A) 1MM−4 SP−4 1SVM−7...
  • Page 272 UNITS WITH MAP UNITS WITH DS CONNECTOR UNITS WITHOUT UNITS WITH IAT UNITS WITHOUT IAT NOTE: CONNECTOR FH−1 IS USED WITH SPIN−ON FILTERS CONNECTOR FH−2 IS USED WITH SUCTION SIDE FILTERS X4 7300/7500 BASED ON 62−11617 ART1−S1 & ART 2−S2, REV C...
  • Page 273 INDEX Compressor, Valve Plate, 8−27 Configuration Settings, 5−4, 5−17 Advanced User, 3−16 Configurations, Start−Stop, 4−5 Air Cleaner, 2−5, 8−11 Control System, 3−12 Air Cleaner Service Indicator, 2−5, 8−11 Controls, Engine , 2−5 Air Flow, 4−14 Coolant, Capacity, 2−14 Air Gap, Clutch, 2−15 Coolant, Engine, 1−1 Air System, Engine, 2−5 Cooling, 4−3...
  • Page 274 INDEX − Continued Language, Selection, 3−15 Fan, Condenser, 8−18 Languages, 2−10 Fan, Evaporator, 8−19 Leak Checking, Charged System, 8−22 Fanshaft, 8−19 Leak Checking, Compressor, 8−24 Filter Drier, 2−9 Leak Checking, System Without Charge, 8−22 Filter Drier, Checking, 8−33 Leak Checking, With Low Side Pumped Down, 8−23 Filter Drier, Replacement, 8−33 Light Bar, 2−13, 8−42 Filter, Engine Oil, 8−10...
  • Page 275 INDEX − Continued Sensor, Ambient Air Temperature, 2−9 Sensor, Compressor Discharge Temperature, 2−9 Parameters, Re−Start, 4−6 Sensor, Defrost Termination Temperature, 2−10 Parameters, Stop, 4−5 Sensor, Engine Coolant Temperature, 2−5 PC Mode, 5−9 Sensor, Engine Speed, 2−5 Perishable Range, 4−5 Sensor, Fuel Level, 2−13, 8−9 Power Train, 2−6 Sensor, Intake Air Temperature, 2−5 Pre−Trip Inspection, 8−1...
  • Page 276 INDEX − Continued Unloader, Valve Replacement, 8−31 Unloaders, 2−6 Technician Mode, 5−1 USB MEMORY DEVICES, 5−8 Temperature Control, 4−5, 9−4 USB Memory Device, Data Transfer, 5−8 Temperature Determination, 4−5 Temperature Range Lock, 4−10 Transducer, Compressor Suction Pressure, 2−8 Valve, Check, 8−38 Transducer, Discharge Pressure, 2−8 Transducer, Manifold Absolute Pressure, 2−5 Valve, Compressor Suction Modulation, 2−10, 8−36...
  • Page 277 Colonia Anahuac Tel: 1−706−357−7223 11320 Mexico, D.F. Fax: 1−706−355−5435 Tel: 55315010 Fax: 55315010 ext. 1005 Carrier Transicold Division, A member of the United Technologies Corporation family. Carrier Corporation Stock symbol UTX P.O. Box 4805 Syracuse, N.Y. 13221 U.S A www.carrier.transicold.com...

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