Container Refrigeration OPERATION AND SERVICE For 69NT40-561-200 to 299 Container Refrigeration Units T−362
OPERATION AND SERVICE MANUAL CONTAINER REFRIGERATION UNIT Model 69NT40−561−200 to 299 ©Carrier Corporation, 2013 Printed in U. S. A.
TABLE OF CONTENTS PARAGRAPH NUMBER Page GENERAL SAFETY NOTICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FIRST AID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety−1 Safety−1 OPERATING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TABLE OF CONTENTS (Continued) PARAGRAPH NUMBER Page DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1 GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2−1 2−1 2.1.1 Refrigeration Unit − Front Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TABLE OF CONTENTS (Continued) PARAGRAPH NUMBER Page 3.3.18 Frozen Economy Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3−8 3.3.19 Frozen Mode Cooling - Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3−8 3.3.20 Defrost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TABLE OF CONTENTS (Continued) PARAGRAPH NUMBER 4.3 Page ADJUST FRESH AIR MAKEUP VENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4−1 4.3.1 Upper Fresh Air Makeup Vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4−2 4.3.2 Lower Fresh Air Makeup Vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4−2 4.3.
TABLE OF CONTENTS (Continued) PARAGRAPH NUMBER Page 6.6 EVACUATION AND DEHYDRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6−3 6.6.1 6.6.2 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TABLE OF CONTENTS (Continued) PARAGRAPH NUMBER Page 6.23 TEMPERATURE SENSOR SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.23.1 Sensor Checkout Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6−18 6−18 6.23.2 Sensor Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.23.
LIST OF ILLUSTRATIONS (Continued) FIGURE NUMBER Figure 6−5 Compressor Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 6−6 High Pressure Switch Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 6−7 Condenser Fan Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SAFETY SUMMARY GENERAL SAFETY NOTICES SPECIFIC HAZARD STATEMENTS Installation and servicing of refrigeration equipment can be hazardous due to system pressures and electrical components. Only trained and qualified service personnel should install, repair, or service refrigeration equipment. When working on refrigeration equipment, observe all potential Danger, Warning and Caution hazards, including those shown below and on hazard labels attached to the unit.
WARNING CAUTION Make sure power to the unit is OFF and power plug disconnected before replacing the compressor. Charge water−cooled condenser or receiver according to nameplate specifications to ensure optimal unit performance. WARNING CAUTION Before disassembly of the compressor, be sure to relieve the internal pressure very carefully by slightly loosening the couplings to break the seal.
CAUTION CAUTION The scroll compressor achieves low suction pressure very quickly. Do not use the compressor to evacuate the system below 0 psig. Never operate the compressor with the suction or discharge service valves closed (frontseated). Internal damage will result from operating the compressor in a deep vacuum. When a failure occurs during automatic testing, the unit will suspend operation awaiting operator intervention.
SECTION 1 INTRODUCTION 1.1 INTRODUCTION 1.3.4 Compressor The unit is fitted with a scroll compressor equipped with suction and discharge service connections. 1.3.5 Condenser Coil The Carrier Transicold model 69NT40−561−200 − 299 series units are of lightweight aluminum frame construction, designed to fit in the front of a container and serve as the container’s front wall. The unit is fitted with a two−row square formed condenser coil using 7mm tubing.
1.4.6 Quest − CCPC 1.4.14 460 Volt Cable Various power cable and plug designs are available for the main 460 volt supply. The plug options tailor the cables to each customer’s requirements. Compressor−Cycle Perishable Cooling (CCPC) is a method of temperature control used during steady−state perishable cooling that cycles the compressor on and off according to supply / return air temperature conditions. 1.4.
SECTION 2 DESCRIPTION 2.1 GENERAL DESCRIPTION 2.1.2 Fresh Air Makeup Vent The function of the upper or lower makeup air vent is to provide ventilation for commodities that require fresh air circulation. A manually operated venting system is located in the upper left access panel. The optional eAutoFresh vent system is used to moderate the atmospheric level in the container in response to cargo respiration. When transporting frozen cargo loads the vent will be closed.
If the unit is equipped with eAutoFresh, system components are mounted in addition to the standard refrigeration unit components. The stepper motor component is installed in the vent; the air filter, CO2 sensor, stepper motor drive and CO2 sensing lines are installed on the rib of the upper grill. Most evaporator components are accessible by removing the upper rear panel (as shown in the illustration) or by removing the evaporator fan access panels (see Figure 2−1). 2.1.
pressure transducer (EPT) and the suction pressure transducer (SPT). 2.1.4 Compressor Section The compressor section includes the compressor, digital unloader valve (DUV), high pressure switch, discharge pressure transducer (DPT), evaporator The supply temperature sensor and supply recorder sensor are located to the left of the compressor. 8 9 10 11 12 16 13 14 2 3 4 5 6 7 1 15 1. 2. 3. 4. 5. 6. 7. 8.
valve (ESV), and sight glass/moisture indicator. 2.1.5 Air−Cooled Condenser Section The condenser fan pulls air from around the coil and discharges it horizontally through the condenser fan grille. The air−cooled condenser section consists of the condenser fan, condenser coil, receiver, liquid line service valve, filter drier, fusible plug, economizer, economizer expansion valve, economizer solenoid 2 1 6 7 8 5 4 3 9 10 11 12 Two locations 14 13 1. 2. 3. 4. 5. 6. 7.
2.1.7 Communications Interface Module The communications interface module is a slave module which allows communication between the refrigeration unit and a ship system master central monitoring station. The module will respond to communication and return information over the ships main power line. Refer to the master system technical manual for further information. 2.1.
2.2 REFRIGERATION SYSTEM DATA a. b. c. d. e. Model Number Weight (With Oil) Compressor/Motor Assembly Approved Oil Oil Charge Verify at −18 C Electronic Expansion Valve (0F) container box Superheat (Evaporator) temperature Verify at −18 C Economizer Expansion (0F) container box Valve Superheat temperature Opens Heater Termination Thermostat Closes Cut−Out High Pressure Switch Cut−In ZMD26KVE−TFD−272 42.9 kg (95 lb) Uniqema Emkarate RL−32−3MAF 1774 ml (60 ounces) 4.4 to 6.7 C (8 to 12 F) 4.4 to 11.
2.3 ELECTRICAL DATA CB−1 (25 amp) CB−2 (50 amp) a. Circuit Breaker CB−2 (70 amp) b. Compressor Full Load Amps (FLA) Motor Nominal Supply c. Condenser Motor d. Evaporator Heaters e. f. g. h.
Section 2.3 − ELECTRICAL DATA−CONTINUED Orange wire Power Red wire Output Brown wire Ground Input voltage 5 VDC Output voltage 0 to 3.3 VDC k. Humidity Sensor Output voltage readings verses relative humidity (RH) percentage: 30% 0.99 V 50% 1.65 V 70% 2.31 V 90% 2.97 V 2.4 SAFETY AND PROTECTIVE DEVICES Unit components are protected from damage by safety and protective devices listed in Table 2−1.
2.5 REFRIGERATION CIRCUIT 2.5.1 Standard Operation 2.5.2 Economized Operation In the economized mode, (see Figure 2−7) the frozen and pull down capacity of the unit is increased by subcooling the liquid refrigerant entering the electronic expansion valve. Overall efficiency is increased because the gas leaving the economizer enters the compressor at a higher pressure, therefore requiring less energy to compress it to the required condensing conditions.
STANDARD OPERATION COMBO ETS1 AND 2 EVAPORATOR ELECTRONIC EXPANSION VALVE SIGHT GLASS CONDENSER FILTER DRIER LIQUID LEVEL/ MOISTURE INDICATOR RECEIVER LIQUID LINE SERVICE VALVE ECON.
ECONOMIZED OPERATION COMBO ETS1 AND ETS2 EVAPORATOR ELECTRONIC EXPANSION VALVE CONDENSER SIGHT GLASS FILTER DRIER LIQUID LEVEL/ MOISTURE INDICATOR RECEIVER LIQUID LINE SERVICE VALVE DISCHARGE TEMPERATURE SENSOR ECON.
SECTION 3 MICROPROCESSOR The DataCORDER software functions to record unit operating parameters and cargo temperature parameters for future retrieval. Coverage of the temperature control software begins with paragraph 3.2. Coverage of the DataCORDER software is provided in paragraph 3.8. The keypad and display module serve to provide user access and readouts for both of the controller functions, temperature control and DataCORDER.
3.1.1 Keypad Table 3−1 Keypad Function KEY The keypad (Figure 3−2) is mounted on the control box door. The keypad consists of eleven push button switches that act as the user’s interface with the controller. Descriptions of the switch functions are provided in Table 3−1. CODE SELECT Accesses function codes. PRE TRIP Displays Pre-trip selection menu. Discontinues Pre-trip in progress. ALARM LIST Displays alarm list and clears the alarm queue.
3.2 CONTROLLER SOFTWARE COOL HEAT DEFROST IN RANGE ALARM SETPOINT/Code The controller software is a custom designed program that is subdivided into configuration software and operational software. The controller software performs the following functions: SUPPLY RETURN a. Control supply or return air temperature to required limits, provide modulated refrigeration operation, economized operation, unloaded operation, electric heat control, and defrost.
During Bump Start, the EEV will close. Relays TS, TQ, TN, TE, and TV will be de-energized (opened). The result of this action will close the ESV and shut all fans off. The compressor will start for 1 second, then pause for five seconds. This sequence will be repeated two more times. After the final bump start the unit will pre-position the EEV to the correct starting position, pause and start up. 3.2.
Pull Down Perishable Mode (Only Applicable to Perishable Mode) Controller Set Point ABOVE −10°C (+14°F), or−5°C (+23°F) optionally Controller Set Point ABOVE −10°C (+14°F), or−5°C (+23°F) optionally +2.5°C (+4.5°F) Cooling, Unloaded ÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍÍÍ −.20°C Air Circulation Cooling, Economized +.20°C −.20°C −.50°C −.20°C −.50°C Heating Falling Temperature Cooling, Unloaded ÍÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍÍ Air Circulation Set Point −.
Two timers are activated during dehumidification to prevent rapid cycling and consequent contactor wear: In order to initiate economy fan mode, a perishable set point must be selected prior to activation. When economy fan mode is active, the evaporator fans will be controlled as follows: At the start of each cooling or heating cycle, the evaporator fans will run in high speed for three minutes. They will then be switched to low speed any time the supply air temperature is within +/- 0.2 C (0.
e. When the supply air temperature has fallen to within 1.9 C (3.4 F) of set point temperature and the average capacity of the system has fallen below 70%, the unit will open contacts TS to close the ESV and take the unit out of economized operation. ENERGIZED DE-ENERGIZED ST F TC HPS f. The controller continuously monitors supply air temperature. Once the supply air temperature falls below set point, the controller periodically records supply air temperature, set point and time.
Frozen Mode Controller Set Point at or BELOW −10°C (+14°F), or −5°C (+23°F) optionally +2.5°C (+4.5°F) Cooling, Economized −.20°C ÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍÍÍ Falling Rising +.20°C Set Point Air Circulation Temperature Temperature Figure 3−8 Controller Operation - Frozen Mode 3.3.19 Frozen Mode Operation 3.3.
f. When the return air temperature increases to 0.2 C (0.4 F) above set point and three minutes have elapsed, the EEV opens and contacts TC, TS and TN close to restart the compressor, open the ESV and restart the condenser fan motor. The white COOL is illuminated. 3.3.
3. During Pretrip, defrost may occur during tests P-8, and P-10. Defrost is forced during Pretrip test P-9. When defrost is initiated, the controller closes the EEV, opens contacts TC, TN and TE (or TV) to de-energize the compressor, condenser fan and evaporator fans. The white COOL light is also de-energized. The controller then closes contacts TH to supply power to the heaters, and the orange DEFROST light is illuminated.
When the return air temperature falls to 7 C (45 F), the controller ensures that the defrost temperature sensor (DTS) reading has dropped to 10 C or below. If it has not it indicates a failed DTS, a DTS failure alarm is triggered and the defrost mode is operated by the return temperature sensor (RTS). 3.4.4 Compressor High Temperature Protection The controller continuously monitors compressor discharge pressure and temperature, and suction pressure.
c. The left display will show “AL##,” where ## is the alarm number sequentially in the queue. 3.5 QUEST − CCPC Compressor-Cycle Perishable Cooling (CCPC) is a method of temperature control used during steady-state perishable cooling that cycles the compressor on and off according to return air temperature. d. The right display will show the actual alarm code. “AA##” will display for an active alarm, where “##” is the alarm code. Or “IA##” will display for an inactive alarm, see Table 3−6.
3.8 DataCORDER 3.8.1 Description Supply Air Temperature Real Time Clock Battery (Internal) Replacement Carrier Transicold “DataCORDER” software is integrated into the controller and serves to eliminate the temperature recorder and paper chart. DataCORDER functions may be accessed by keypad selections and viewed on the display module. The unit is also fitted with interrogation connections (see Figure 3−1) which may be used with the Carrier Transicold DataReader to download data.
3.8.3 Sensor Configuration (dCF02) Two modes of operation may be configured, the Standard Mode and the Generic Mode. a. Standard Mode In the standard mode, the user may configure the DataCORDER to record data using one of seven standard configurations. The seven standard configuration variables, with their descriptions, are listed in Table 3−3. The inputs of the six thermistors (supply, return, USDA #1, #2, #3 and cargo probe) and the humidity sensor input will be generated by the DataCORDER.
Raw Data Report for ABC1234567 May 31, 2007 to Jun 04, 2007 System Configuration at the Time of Interrogation: Interrogated On May 05, 2007 Extracted by DataLINE Rev 1.0.0 Controller Software: 5327 Controller Serial #: 04163552 Bill of Lading #: 1 Origin: Origin Date: Destination: Discharge Date: Comment: DataLINE Tool Probe Calibration Readings: USDA1: 0.0 USDA2: 0.0 USDA3: 0.0 Cargo: 0.
2. Controller DC battery pack power: If a battery pack is installed, the DataCORDER will power up for communication when an interrogation cable is plugged into an interrogation receptacle. Table 3−3 DataCORDER Standard Configurations Standard Config.
a. DataLINE b. USDA/ Message Trip Comment The DataLINE software for a personal computer is supplied on both floppy disks and CD. This software allows interrogation, configuration variable assignment, screen view of the data, hard copy report generation, cold treatment probe calibration and file management. Refer to Data Retrieval manual 62-10629 for a more detailed explanation of the DataLINE interrogation software. The DataLINE manual may be found on the internet at www.container.carrier.com.
4. Press the ALARM LIST key. “AL” will show on the left display and “‐‐‐‐‐” on the right display when there are no alarms in the list. 3.8.13 DataCORDER Alarms The alarm display is an independent DataCORDER function. If an operating parameter is outside of the expected range or a component does not return the correct values to the DataCORDER, an alarm is generated. The DataCORDER contains a buffer of up to eight alarms. A listing of the DataCORDER alarms is provided in Table 3−10, page 3−45.
3.
3.10 CONTROLLER FUNCTION CODES Table 3−5 Controller Function Codes (Sheet 1 of 8) Code No. TITLE DESCRIPTION Note: If the function is not applicable, the display will read “‐‐‐‐‐” Display Only Functions − Cd01 through Cd26 are display only functions. Display Only Functions Digital Unloader Cd01 Valve Closed (%) Displays the DUV percent closed. The right display reads 100% when the valve is fully closed. The valve will usually be at 10% on start up of the unit except in very high ambient temperatures.
Table 3−5 Controller Function Codes (Sheet 2 of 8) Cd21 Capacity Mode The mode of operation is displayed (Unloaded - Standard - Economized). Cd22 Compressor State The status of the compressor is displayed (OFF, On). Cd23 Evaporator Fan Displays the current evaporator fan state (OFF, LOW, HIGH). Compressor Run Cd25 Time Remaining Until Defrost This code displays the time remaining until the unit goes into defrost (in tenths of an hour).
Table 3−5 Controller Function Codes (Sheet 3 of 8) The stagger start offset time is the amount of time that the unit will delay at start-up, thus allowing multiple units to stagger their control initiation when all units are powered up together. The eight possible offset values are 0 (Factory Default), 3, 6, 9, 12, 15, 18 or 21 seconds. The current limit is the maximum current draw allowed on any phase at any time. Limiting the unit’s current reduces the load on the main power supply.
Table 3−5 Controller Function Codes (Sheet 4 of 8) Container Cd40 Identification Number If a valid container id exists, the default display for Cd40 will be “cd40_XXXXX” where “XXXXX” is the 5th character through the 9th character of the container id. Pressing the Enter key on Cd40 will display “id_YYYYYYY” where “YYYYYYY” is the 5th character to the 11th character of the container id.
Table 3−5 Controller Function Codes (Sheet 5 of 8) Selects the airflow units to be displayed by Cd45 if configured for Vent Position Sensor or displayed by “USER/FLO” under Cd43 if configured for Autoslide. CF= Cubic Feet per Minute Cd46 Airflow Display Units CM=Cubic Meters per Hour bOth=Displays CF or CM depending on the setting of Cd28 (Metric/Imperial) or the pressing of the degree C/F key. Used when Economy Mode (CnF22) is set to 3−cust.
Table 3−5 Controller Function Codes (Sheet 6 of 8) Display Only Function − Cd49 is a display only function. Days Since Last Cd49 Successful Pre-trip Displays the number of days since last successful pretrip sequence. Press ENTER to view the number of days since the last successful pretrip for Auto1, Auto2, and Auto2 in sequence. Press CODE SELECT to step back through the list and ultimately to exit the Cd49 display. Configurable Functions − Cd50 through Cd53 are user-selectable functions.
Table 3−5 Controller Function Codes (Sheet 7 of 8) Automatic Set point Cd53 Change Mode Parameter Selection ASC-mode: Cd53 increments of (1 day)_(1hr), Display: default “0_0 “ “done” mm-dd this will be display is ASC has completed “ASC” value “On” “OFF” Display /Select: default “OFF“ “nSC” value “1 - 6“ (This is the value “n” for the subsequent entries). “SP (n-1)” value C / F on 0.1 degree increments Display/Select: default “10.
Table 3−5 Controller Function Codes (Sheet 8 of 8) Configurable Functions − Cd59 through Cd61 are user-selectable functions. The operator can change the value of these functions to meet the operational needs of the container. Cd59 allows operation of the pump down logic control. The display will flash between “STArT PdN” and “PrESS EnTEr”. Upon entering Cd59 the operator will be required to acknowledge that they want to initiate the pump down control.
Start Troubleshooting Unit does self test? No Check Power Supply Refer to CONNECT POWER Section 4.2 No Check Power Supply Refer to CONNECT POWER Section 4.2 No Install Latest Software Revision Refer to CONTROLLER SOFTWARE Section 3.2 No Load correct unit configuration Refer to Configuration Software (Variables) Section 3.2.
3.11 CONTROLLER ALARM INDICATIONS Alarm Code AL03 Loss of Superheat Control Table 3−6 Controller Alarm Indications (Sheet 1 of 8) Cause Components Troubleshooting Superheat has Electronic Check the operation of the remained below Expansion Valve EEV using Cd41. 1.66 C (3 F) degrees (EEV) for five minutes Evaporator Verify accuracy of continuously while Temperature temperature sensors, refer compressor running. Sensor(s) ETS & to Sensor Checkout Compressor drawing ETS1. Procedure Section 6.23. more than 2.
Table 3−6 Controller Alarm Indications (Sheet 2 of 8) Alarm Code AL16 Compressor Current High Cause Components Compressor current Current Sensor draw is over the calculated maximum for 10 minutes. Amperage is indeed too high. Operating Conditions Make sure system Check air flow of pressures are relevant to condenser. operating conditions. Check Refrigerant charge, refer to REFRIGERATION SYSTEM SERVICE Section 6.
Table 3−6 Controller Alarm Indications (Sheet 3 of 8) Alarm Code Cause AL18 Discharge pressure is over the maximum for Discharge Pressure High 10 minutes within the last hour. AL19 Discharge Temperature High AL20 Control Contactor Fuse (F3) Components Restrictions in the refrigeration system. Filter Drier Troubleshooting Corrective Actions Ensure Liquid Line Service Open Liquid Line SerValve is fully open. vice Valve as needed.
Table 3−6 Controller Alarm Indications (Sheet 4 of 8) Alarm Code Cause Components AL21 One of the 18 VAC System Sensors Control Circuit controller fuses Fuse (F1/F2) (F1/F2) is open. Refer Wiring to Cd08. Controller Corrective Actions Replace defective sensor(s) Repair as needed. Replace controller, refer to Controller Service Section 6.22. Shut down unit, disconnect Replace defective power, & check Evaporator evaporator fan motor, Motor IP at plug connection refer to EVAPORATOR pins 4 & 6.
Table 3−6 Controller Alarm Indications (Sheet 5 of 8) Alarm Code AL28 Low Suction Pressure Cause Suction pressure too low for normal operation. Components N/A Suction Pressure Transducer (SPT) Discharge Pressure Transducer (DPT) Alarm LED will be activated and user intervention is required. Troubleshooting Power cycle the unit. Corrective Actions Resetting the unit may correct problem, monitor the unit. Confirm accurate SPT Replace SPT if pressure readings, refer to defective.
Table 3−6 Controller Alarm Indications (Sheet 6 of 8) Alarm Code Cause AL56 Invalid Return Temperature Sensor Primary Return Sensor (RTS) reading. (RTS) Components Return Temperature Sensor (RTS) Troubleshooting Perform Pre-trip P5: Invalid Ambient Temperature Sensor (AMBS) reading. Ambient Temperature Sensor (AMBS) Test the AMBS, refer to Sensor Checkout Procedure Section 6.23.1.
Table 3−6 Controller Alarm Indications (Sheet 7 of 8) Alarm Code AL65 Discharge Pressure Transducer (DPT) Cause Components Compressor Compressor Discharge Transducer Discharge is out of range. Transducer (DPT) AL66 Suction Pressure Suction Pressure (SPT) Suction Transducer (SPT) out Transducer (SPT) of range. Pressure Transducer, (EPT) Evaporator Pressure Transducer AL67 Humidity Sensor Humidity Sensor (HS) reading out of range.
Table 3−6 Controller Alarm Indications (Sheet 8 of 8) NOTE If the controller is configured for four probes without a DataCORDER, the DataCORDER alarms AL70 and AL71 will be processed as Controller alarms AL70 and AL71. Refer to Table 3−10, page 3−45. The controller performs self-check routines. If an internal failure occurs, an “ERR” alarm will appear on the display. This is an indication the controller needs to be replaced.
3.12 CONTROLLER PRE−TRIP TEST CODES Table 3−7 Controller Pre-trip Test Codes (Sheet 1 of 6) NOTE “Auto” or “Auto1” menu includes the: P0, P1, P2, P3, P4, P5, P6 and rSLts. “Auto2” menu includes P0, P1, P2, P3, P4, P5, P6, P7, P8, P9, P10 and rSLts. “Auto3” menu includes P0, P1, P2, P3, P4, P5, P6, P7 and P8.
Table 3−7 Controller Pre-trip Test Codes (Sheet 2 of 6) P4 Tests - High Speed Evaporator Fans Current Draw: High speed evaporator fans are turned on, then off. Current draw must fall within specified range and measured current changes must exceed specified ratios. No other system components will change state during this test. NOTE If unit configured for single evaporator fan operation and either AL11 or AL12 is active at the start of either test, the test will fail immediately.
Table 3−7 Controller Pre-trip Test Codes (Sheet 3 of 6) P5-7 P5-8 P5-9 Primary .vs Secondary Evaporator Temperature Sensor Test Primary Evaporator Pressure Transducer Test Suction (Evaporator) Pressure Transducer Test This is a Pass/Fail test of the primary evaporator temperature sensor (ETS1) and secondary evaporator temperature sensor (ETS2). Test passes if secondary evaporator temperature sensor (ETS2) is within +/- 0.5 C of the primary evaporator temperature sensor (ETS1).
Table 3−7 Controller Pre-trip Test Codes (Sheet 4 of 6) NOTE P6-6 through P6-10 are conducted by changing status of each valve and comparing suction pressure change and/or compressor current change with predetermined values. Tests will cause compressor and condenser fans to cycle on and off as needed to generate the pressure required for individual Pre-trip sub tests. The compressor will start in order to build discharge pressure, followed by compressor pump down sequence.
Table 3−7 Controller Pre-trip Test Codes (Sheet 5 of 6) P8 Tests - Perishable Mode Tests: Pretrip tests P7-0 and P7-1 must have passed or have been skipped for these tests to execute. P8-0 Perishable Mode Test P8-1 Perishable Mode Pull Down Test / eAutofresh CO2 Sensor Calibration P8-2 Perishable Mode Maintain Temperature Test If the control temperature is below 15.6 C., the setpoint is changed to 15.6 C., and a 180 Minute timer is started.
Table 3−7 Controller Pre-trip Test Codes (Sheet 6 of 6) P9 Test - DTT Close and Open Test: The DTT in this control is not a physical device, with actual metallic contacts, it is a software function that acts similar to a thermostat. Using various temperature inputs, the DTT function determines whether a thermostat mounted on the Evaporator Coil would have OPEN or CLOSED contacts. Primarily, the DTT function operates based on the temperature reading from the Defrost Termination Sensor.
Table 3−8 DataCORDER Function Code Assignments NOTE Inapplicable Functions Display “‐‐‐‐‐” To Access: Press ALT. MODE key then CODE SELECT key Code No. TITLE DESCRIPTION dC1 Recorder Supply Temperature Current reading of the supply recorder sensor. dC2 Recorder Return Temperature Current reading of the return recorder sensor. dC3-5 USDA 1,2,3 TemperCurrent readings of the three USDA probes. atures dC6-13 Network Data Points 1-8 Current values of the network data points (as configured).
Table 3−9 DataCORDER Pre-trip Result Records Test No.
Table 3−10 DataCORDER Alarm Indications To Access: Press ALT. MODE key then ALARM LIST key Code No. TITLE DESCRIPTION The supply recorder sensor reading is outside of the range of -50 C to 70 C (-58 F to +158 F), or the probe check logic has determined there is Recorder Supply a fault with this sensor. Temperature Out of dAL70 Range NOTE The P5 Pre-trip test must be run to inactivate the alarm.
SECTION 4 OPERATION 4.2.1 Connection To 380/460 VAC Power 1. Make sure start−stop switch (ST on control panel) and circuit breaker (CB−1 in the control box) are in position “0” (OFF). 2. Plug the 460 VAC (yellow) cable into a de−energized 380/460 VAC, 3−phase power source. Energize the power source. Place circuit breaker (CB−1) in position “I” (ON). Close and secure control box door. 4.2.
4.3.1 Upper Fresh Air Makeup Vent Two slots and a stop are designed into the Upper Fresh Air disc for air flow adjustments. The first slot allows for a 0 to 30% air flow; the second slot allows for a 30 to 100% air flow. To adjust the percentage of air flow, loosen the wing nut and rotate the disc until the desired percentage of air flow matches with the arrow. Tighten the wing nut. 4.3.2 Lower Fresh Air Makeup Vent a.
4.3.3 Vent Position Sensor 4.4.1 eAutoFresh Pre−Trip Inspection Pre−trip testing of the eAutoFresh system is performed during Pre−Trip test P0. Operation of the system may be observed during this test. Upon initiation of Pre−Trip P0, the current state will be saved and the vent will fully close. This will be followed by two sequences of opening to 100% and returning to the closed position. No other eAutoFresh mode of operation will be available until the two cycles of opening and closing have completed.
CAL will attempt to calibrate the CO2 sensor. When “CAL“ is selected the display will flash “CAL“. The operator is to hold the “ENTER“ key for 5 seconds. The display will stop flashing and read “CAL“ for 5 seconds. The microprocessor will read the CO2 value, and then compare that value to a known zero value. If the sensor is within the calibration parameter range, the microprocessor will determine the appropriate offset for the sensor.
4.6 STARTING AND STOPPING INSTRUCTIONS 4.8 PRE−TRIP DIAGNOSIS CAUTION WARNING Pre−trip inspection should not be performed with critical temperature cargoes in the container. Make sure that the unit circuit breaker(s) (CB−1 & CB−2) and the START−STOP switch (ST) are in the “O” (OFF) position before connecting to any electrical power source. CAUTION NOTE The electronic phase detection system will check for proper compressor rotation within the first 30 seconds.
b. TO RUN AN AUTOMATIC TEST: Scroll through the selections by pressing the UP ARROW or DOWN ARROW keys to display AUTO, AUTO 1, AUTO 2 or AUTO 3 as desired, then press ENTER. menu, the user may press the UP ARROW key. When this is done, all test outputs will be de−energized and the test selection menu will be displayed. 1. The unit will execute the series of tests without any need for direct user interface. These tests vary in length, depending on the component under test. 2.
In the Case of Probe Disagreement: CAUTION If the supply probes disagree and the return probes agree, the controller will invalidate the worst supply probe. If the probe check is run as part of Pre−trip P−5, an alarm will be triggered for the invalidated probe. If it is a run time defrost probe check, the invalidated probe will be passed over and no alarm will be triggered. However, if the best supply probe is greater than 1.2 C (2.
SECTION 5 TROUBLESHOOTING CONDITION POSSIBLE CAUSE REMEDY/ REFERENCE SECTION 5.
CONDITION POSSIBLE CAUSE REMEDY/ REFERENCE SECTION 5.3 UNIT RUNS BUT HAS INSUFFICIENT COOLING Refrigeration system Abnormal pressures Abnormal temperatures Abnormal currents Controller malfunction Evaporator fan or motor defective Compressor service valves or liquid line shutoff valve partially closed 5.7 5.15 5.16 5.9 6.14 Open valves completely Frost on coil Digital unloader valve stuck open Electronic expansion valve 5.10 Replace Replace 5.
CONDITION POSSIBLE CAUSE REMEDY/ REFERENCE SECTION 5.6 UNIT WILL NOT DEFROST PROPERLY (Continued) Initiates but does not defrost Frequent defrost Heater contactor or coil defective Heater(s) burned out Wet load Replace 6.
CONDITION POSSIBLE CAUSE REMEDY/ REFERENCE SECTION 5.10 NO EVAPORATOR AIR FLOW OR RESTRICTED AIR FLOW Frost on coil Dirty coil Evaporator fan motor internal protector open Evaporator fan motor(s) defective No or partial evaporator air flow Evaporator fan(s) loose or defective Evaporator fan contactor defective 5.
CONDITION POSSIBLE CAUSE REMEDY/ REFERENCE SECTION 5.13 AUTOTRANSFORMER MALFUNCTION Unit will not start Circuit breaker (CB−1 or CB−2) tripped Autotransformer defective Power source not turned ON 460 VAC power plug is not inserted into the receptacle Check 6.21 Check 4.2.2 5.14 COMPRESSOR OPERATING IN REVERSE NOTE The compressor may start in reverse for up to 10 seconds to determine correct phase rotation if required for phase detection.
SECTION 6 SERVICE When the Discharge Pressure Valve (4) is frontseated, the discharge (high) pressure can be checked at the Discharge Pressure Gauge (3). When both valves are backseated (all the way out), high pressure vapor will flow into the low side. NOTE Use a refrigerant recovery system whenever removing refrigerant. When working with refrigerants you must comply with all local government environmental laws. In the U.S.A., refer to EPA section 608.
a. While the compressor is still ON, backseat the high side service valve. 6.3 SERVICE CONNECTIONS The compressor suction, compressor discharge, and the liquid line service valves (see Figure 6−3) are provided with a double seat and an access valve which enables servicing of the compressor and refrigerant lines. Turning the valve stem clockwise (all the way forward) will frontseat the valve to close off the line connection and open a path to the access valve.
h. After repairs have been made, be sure to perform a refrigerant leak check (refer to Section 6.5), and evacuate and dehydrate the low side (refer to paragraph 6.6.1). c. If possible, keep the ambient temperature above 15.6 C (60 F) to speed evaporation of moisture. If the ambient temperature is lower than 15.6 C (60 F), ice might form before moisture removal is complete. Heat lamps or alternate sources of heat may be used to raise the system temperature. d.
c. Remove the ESV coil from the valve body. Place the magnet tool over the valve stem, an audible click will be heard when the ESV opens. 6.7.1 Checking the Refrigerant Charge NOTE Use a refrigerant recovery system whenever removing refrigerant. When working with refrigerants you must comply with all local government environmental laws. In the U.S.A., refer to EPA Section 608. NOTE Make sure to replace the valve coil before restating the unit.
g. Remove the Rotalock fittings from the suction and discharge service connections, and uncouple the unloader and economizer lines from the compressor. 6.8 COMPRESSOR WARNING h. Cut the dome temperature sensor (CPDS) wires. The replacement compressor comes with a CPDS already assembled. Make sure power to the unit is OFF and power plug disconnected before replacing the compressor. i. Remove and save the compressor base mounting bolts. Discard the 4 top resilient mounts and washers. j.
o. Place the new Teflon seals at the compressor suction and discharge ports as well as the O−rings at the unloader and economizer line connection ports. Hand tighten all four connections. 6.9 HIGH PRESSURE SWITCH 6.9.1 Checking High Pressure Switch WARNING p. Torque the four base−mounting screws to 6.2 mkg (45 ft−lbs). Do not use a nitrogen cylinder without a pressure regulator. q. Torque the compressor ports / connections to: NOTE The high pressure switch is non-adjustable.
h. Cut the top and bottom drain lines midway between the side support bracket and the first cable tie, approx 150mm (6”) from the side support bracket. i. Remove and retain sufficient putty from around the drain lines to allow the tubes to be slid back through the side support bracket. j. Remove filter drier. k. Unbraze the inlet connection to coil. l. Remove the cushion clamps securing the liquid line to the top and bottom receiver brackets, retain all clamps and securing hardware. m.
j. Evacuate the entire unit, refer to Section 6.6. 6.11 CONDENSER FAN AND FAN MOTOR k. Slide the top and bottom drain lines back into place through the side support bracket. The condenser fan rotates counter-clockwise (viewed from front of unit). The fan pulls air through the condenser coil, and discharges the air horizontally through the front of the unit. l. Using the two supplied straight connectors and contact adhesive reconnect the drain lines. 6.11.1 Condenser Fan Motor Remove/Replace m.
e. Unsolder the two coil connections, one at the distributor and the other at the coil header. 6.12 FILTER DRIER a. To check filter drier: f. Disconnect the defrost temperature sensor (refer to 6.23) from the coil. 1. Test for a restricted or plugged filter drier by feeling the liquid line inlet and outlet connections. If the outlet side feels cooler than the inlet side, then the filter drier should be changed. g. Remove middle coil support. h.
d. Install the fan onto the motor shaft. Place one 5/8 flat washer with a 5/8-18 locknut onto the motor shaft and torque to 40 foot-pounds. 6.14 EVAPORATOR FAN AND MOTOR ASSEMBLY The evaporator fans circulate air throughout the container by pulling air in the top of the unit. The air is forced through the evaporator coil where it is either heated or cooled and then discharged out the bottom of the refrigeration unit into the container.
Typically any aluminum oxide that becomes detached from evaporator fan stators will be blown into the wet evaporator coil where it will be caught and then flushed out of the unit during routine defrost cycles. 6.16.1 Replacing Electronic Expansion Valve and Strainer a. Removing an EEV: However, it is still highly recommended that after carrying cargo subject to fumigation procedures, that the inside of the unit be thoroughly cleansed prior to reuse.
5. Place the top coil o−ring on the coil mounting screw and secure the coil to the valve using a torque− wrench. Torque the screw to 25 in−lbs. 6.17 ECONOMIZER SOLENOID VALVE 1 6. Connect coil wires using butt−splices and heat− shrink tubing. 2 6.18 ECONOMIZER EXPANSION VALVE 3 The economizer expansion valve is an automatic device that maintains constant superheat of the refrigerant gas leaving at the point of bulb attachment, regardless of suction pressure. 4 5 1. 2. 3. 4. 5.
6. VALVE REMOVAL: The preferred method of removing the valve is to cut the connection between the brazed section and the valve, using a small tube cutter. Remove valve. 5. Loosen the nuts attaching the DUV to the top of the compressor. 6. VALVE REMOVAL: The preferred method of removing the solenoid valve is to cut the connection between the brazed section and the valve, using a small tube cutter. Remove valve. (See Figure 6−13). Alternately, use a wet rag to keep valve cool.
a. Press the CODE SELECT key then press an ARROW key until Cd41 is displayed in the left window. The right window will display a controller communications code. 6.20 VALVE OVERRIDE CONTROLS Controller function code Cd41 is a configurable code that allows timed operation of the automatic valves for troubleshooting. Test sequences are provided in Table 6−1. Capacity mode (CAP) allows alignment of the economizer solenoid valve in the standard and economized operating configurations.
The guidelines and cautions provided herein should be followed when handling the modules. These precautions and procedures should be implemented when replacing a module, when doing any arc welding on the unit, or when service to the refrigeration unit requires handling and removal of a module. 6.21 AUTOTRANSFORMER If the unit does not start, check the following: a. Make sure the 460 VAC (yellow) power cable is plugged into the receptacle (see Figure 6−14) and locked in place. a.
1 2 4. The display will alternate to between PrESS EntR and rEV XXXX. 5. Press the ENTER key on the keypad. 6. The display will show the message “Pro SoFt”. This message will last for up to one minute. 7. The display module will go blank briefly, then read “Pro donE” when the software loading has loaded. (If a problem occurs while loading the software: the display will blink the message “Pro FAIL” or “bad 12V.” Turn start-stop switch OFF and remove the card.) 8. Turn unit OFF, via start-stop switch (ST).
b. Installation: 14.Confirm correct model configuration using the keypad to choose code 20 (CD20). The model displayed should match the unit serial number plate. c. Procedure for setting the date and time: 1. Press the UP or DOWN arrow key until display reads Set TIM. 2. Press the ENTER key on the keypad. 3. The first value to be modified is the date in YYYY MM−DD format. The values will be entered from right to left. Press the UP or DOWN ARROW key to increase or decrease the values.
b. Start unit and check sensor reading on the control panel. The reading should be 0 C (32 F). If the reading is correct, reinstall sensor; if it is not, continue with the following. 6.23 TEMPERATURE SENSOR SERVICE Service procedures for the return recorder, return temperature, supply recorder, supply temperature, ambient, defrost temperature, evaporator temperature, and compressor discharge temperature sensors are provided in the following sub paragraphs. c. Turn unit OFF and disconnect power supply. d.
Table 6−3 Sensor Resistance (CPDS) 5C *40 *38 *36 *34 *32 *30 *28 *26 *24 *22 *20 *18 *16 *14 *12 *10 *8 *6 *4 *2 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 °F *40 *36.4 *32.8 *29.2 *25.6 *22.0 *18.4 *14.8 *11.2 *7.6 *4.0 *0.4 3.2 6.8 10.4 14.0 17.6 21.2 24.8 28.4 32.0 35.6 39.2 42.8 46.4 50.0 53.6 57.2 60.8 64.4 68.0 71.6 75.2 78.8 82.4 83.0 89.6 93.2 96.
6.23.2 Sensor Replacement 2 WARNING Always turn OFF the unit circuit breaker (CB-1) and disconnect main power supply before removing electrical parts. 1 a. Turn unit power OFF and disconnect power supply. 4 4. Heat Shrink Tubing, 2 or 3 as required Figure 6−17 Sensor and Cable Splice g. If required, slide the cap and grommet assembly onto the replacement sensor. h. Slip crimp fittings over dressed wires (keeping wire colors together).
6.23.3 Sensors STS and SRS Re-Installation To properly position a unit supply sensor (Supply Temperature Sensor STS or Supply Recorder Sensor SRS), the sensor must be fully inserted into the probe holder. This positioning will give the sensor the optimum amount of exposure to the supply air stream, and will allow the Controller to operate correctly. Insufficient probe insertion into the probe holder will result in poor temperature control due to the lack of air flow over the sensor.
4. Place a bead of the silicone sealer supplied with the replacement sensor around the sensor sealing ring. Insert sensor into the well with the leads parallel to the suction fitting. 6.23.7 Sensor, CPDS Re-Installation To replace the Compressor Discharge Temperature Sensor, see Figure 6−21: 5. Reconnect the sensor (see Figure 6−17) and run Pre−trip P5. 1. Ensure the unit is disconnected from the power source and that ST is in OFF position. 6.
6.25 eAutoFresh SERVICE Stepper Drive (SD) Stepper Motor (AF) 6.25.1 Servicing the eAutoFresh Air Filter Removing the Air Sample Filter Element The air sample filter element can be accessed in two ways: 1. Through the eAutoFresh side evaporator access panel. Figure 6−22 Stepper Components d. Set the SMA−12 pulse per second (PPS) to one PPS and press button to open or close the valve. Each LED should light sequentially until all four are lit.
There should be approximately five volts DC on sockets “C” and “D” (S1 and S2) when measured as above. If not the connections or controller is faulty. If any of these pins are not consistent, the connections or the controller is suspect. Check and replace as required. 6.25.3 Checking the Controller a. Turn the unit OFF. b. Disconnect the six pin connector to the stepper drive from the controller. c.
1 2 5 3 6 7 8 4 12 1 1. 2. 3. 4. 5. 6. Connector Tie Wrap eAutoFresh Panel Cup, Motor Rail, Top Plate, Gasket 11 10 9 7. Grille 8. Grill Screws 9. Rail Screws 10. Plate, Slide 11. Rail, Bottom 12.
sioned, a provision wiring kit (Carrier Transicold part number 76-00685-00) must be installed. Installation instructions are packaged with the kit. 6.26 MAINTENANCE OF PAINTED SURFACES The refrigeration unit is protected by a special paint system against the corrosive atmosphere in which it normally operates. However, should the paint system be damaged, the base metal can corrode.
Table 6−4 R-134a Temperature - Pressure Chart Temperature Vacuum Temperature Pressure F C “/hg cm/hg kg/cm2 -40 -40 14.6 49.4 37.08 0.49 28 -2 24.5 168.9 1.72 1.69 -35 -37 12.3 41.6 31.25 0.42 30 -1 26.1 180.0 1.84 1.80 -30 -34 9.7 32.8 24.64 0.33 32 0 27.8 191.7 1.95 1.92 -25 -32 6.7 22.7 17.00 0.23 34 1 29.6 204.1 2.08 2.04 -20 -29 3.5 11.9 8.89 0.12 36 2 31.3 215.8 2.20 2.16 -18 -28 2.1 7.1 5.33 0.07 38 3 33.2 228.9 2.33 2.
Table 6−5 Recommended Bolt Torque Values BOLT DIA. THREADS TORQUE FREE SPINNING #4 40 5.2 in-lbs #6 32 9.6 in-lbs #8 32 20 in-lbs #10 24 23 in-lbs 1/4 20 75 in-lbs 5/16 18 11 ft-lbs 3/8 16 20 ft-lbs 7/16 14 31 ft-lbs 1/2 13 43 ft-lbs 9/16 12 57 ft-lbs 5/8 11 92 ft-lbs 3/4 10 124 ft-lbs NONFREE 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 T-362 Nm 0.6 1.1 2.0 2.5 8.4 15 28 42 59 78 127 171 SPINNING (LOCKNUTS ETC.) 20 82.5 in-lbs 9.3 18 145.2 in-lbs 16.4 16 22.0 ft-lbs 23 14 34.1 ft-lbs 47 13 47.3 ft-lbs 65 12 62.
SECTION 7 ELECTRICAL WIRING SCHEMATICS 7.1 INTRODUCTION This section contains the Electrical Schematics and Wiring Diagrams.
Based on Drawing 62−11737 Figure 7−2 SCHEMATIC DIAGRAM T-362 7−2
Based on Drawing 62−11737 Figure 7−3 UNIT WIRING DIAGRAM (Sheet 1 of 2) 7−3 T-362
Based on Drawing 62−11737 Figure 7−6 UNIT WIRING DIAGRAM (Sheet 2 of 2) T-362 7−4
LEGEND SYMBOL DESCRIPTION SYMBOL DESCRIPTION AMBS AMBIENT SENSOR (C−23) HS C CONTROLLER (L−21) HTT HEAT TERMINATION THERMOSTAT (E−15) CB1 CIRCUIT BREAKER − 460 VOLT (J−1) ICF INTERROGATOR CONNECTOR FRONT (T−23) CB2 OPTIONAL CIRCUIT BREAKER − DVM (OPTION) (D−1) TERMINAL BLOCK WHEN CB2 NOT PRESENT ICR INTERROGATOR CONNECTOR REAR (T−24) CF CONDENSER FAN CONTACTOR (N−8, L−11) CH COMPRESSOR CONTACTOR (L−10, P−1) CI COMMUNICATIONS INTERFACE MODULE (OPTION) (A−4) CL COOL LIGHT (OPTION) (L−1
Based on Drawing 62−66088 Figure 7−5 SCHEMATIC DIAGRAM, Unit With Autotransformer T-362 7−6
Based on Drawing 62−11737 Figure 7−6 UNIT WIRING DIAGRAM, Unit With Autotransformer (Sheet 1 of 2) 7−7 T-362
Based on Drawing 62−11737 Figure 7−6 UNIT WIRING DIAGRAM, Unit With Autotransformer (Sheet 2 of 2) T-362 7−8
INDEX A Adjusting Fresh Air Makeup, 4−1 Air−Cooled Condenser Description, 2−4 Alarm Code, 3−29 Alarm Indications, 3−29 Alarm Troubleshooting Sequence, 3−28 Aluminum oxide, 6−10 Automatic Defrost, 3−9 Autotransformer, 1−2 Autotransformer Service, 6−15 Control Box, 1−1 Control Box Description, 2−5 Controller, 1−2, 3−3 CONTROLLER ALARM INDICATIONS, 3−29 Controller Alarms, 3−12 Controller Alarm Codes, 3−29 Controller Configuration Codes, 3−19 Controller Function Codes, 3−20 CONTROLLER PRE−TRIP TEST CODES, 3−3
INDEX (Continued) E Fumigation, 6−10 eAutoFresh, 1−2 G eAutoFresh Modes of Operation, 4−3 eAutoFresh Operation, 4−3 GENERAL SAFETY NOTICES, Safety−1 eAutoFresh Pre−Trip Inspection, 4−3 General Unit Description, 2−1 eAutoFresh Service, 6−23 Generator Protection, 3−11 eAutoFresh Start−Up Procedure, 4−3 Gutters, 1−2 Economized Operation, Refrigeration Circuit, 2−9 H Economizer Expansion Valve Service, 6−12 Economizer Solenoid Valve Service, 6−12 EEV Replacement, 6−12 Electrical Data, 2−7 Electro
INDEX (Continued) O S OPERATING PRECAUTIONS, Safety−1 Safety and Protective Devices, 2−8 Operational Software (Cd Function Codes), 3−4 Sensor and Cable Splice, 6−20 Option Descriptions, 1−1 Sensor DTS Re-Installation, 6−21 Sensor Replacement, 6−20 P Painted Surfaces Maintenance, 6−26 Perishable Dehumidification, 3−5 Perishable Economy, 3−6 Perishable Heating, 3−4 Perishable Idle, Air Circulation, 3−4 Perishable Mode − Trim Heat, 3−7 Perishable Mode Cooling − Sequence of Operation , 3−6 Perishable M
INDEX (Continued) V 0 Valve Override Controls, 6−14 07−00176−11, 6−3 Vent Position Sensor, 4−3 07−00277−00, 6−15 VENT POSITION SENSOR (VPS), 6−22 07−00294−00, 6−1 07−00304−00, 6−15 W 7 Water Cooling, 1−2 Wiring Schematic, 7−1 T-362 76−00685−00, 6−26 Index−4
A member of the United Technologies Corporation family. Stock symbol UTX Carrier Transicold Division, Carrier Corporation P.O. Box 4805 Syracuse, N.Y. 13221 U.S A www.carrier.transicold.
