Carrier 69NT40-511-1 Operating And Service Manual
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Carrier 69NT40-511-1 Operating And Service Manual

Carrier 69NT40-511-1 Operating And Service Manual

Container refrigeration unit
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Container
Refrigeration
Unit
Models
69NT40-511-1
to
69NT40-511-199
and
69NT40-521
DUE TO THE LARGE NUMBER OF SCHEMATIC
DIAGRAMS CONTAINED IN THIS BOOK, THE
BOOK IS PRESENTED AS TWO FILES.
REFER TO FILE T268- -DIAGRAMS FOR THE
CHAPTER 7 ELECTRICAL DIAGRAMS AND
SCHEMATICS
T-268 Rev G

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Summary of Contents for Carrier 69NT40-511-1

  • Page 1 Container Refrigeration Unit Models 69NT40-511-1 69NT40-511-199 69NT40-521 DUE TO THE LARGE NUMBER OF SCHEMATIC DIAGRAMS CONTAINED IN THIS BOOK, THE BOOK IS PRESENTED AS TWO FILES. REFER TO FILE T268- -DIAGRAMS FOR THE CHAPTER 7 ELECTRICAL DIAGRAMS AND SCHEMATICS T-268 Rev G...
  • Page 2 OPERATION AND SERVICE MANUAL CONTAINER REFRIGERATION UNIT MODELS 69NT40-511-1 69NT40-511-199 69NT40-521 Carrier Transicold Division, Carrier Corporation, P.O. Box 4805, Syracuse, N.Y. 13221 E Carrier Corporation 1999 S Printed in U. S. A. 0499...
  • Page 3 SAFETY SUMMARY GENERAL SAFETY NOTICES The following general safety notices supplement the specific warnings and cautions appearing elsewhere in this manual. They are recommended precautions that must be understood and applied during operation and maintenance of the equipment covered herein. The general safety notices are presented in the following three sections labeled: First Aid, Operating Precautions and Maintenance Precautions.
  • Page 4 SPECIFIC WARNING AND CAUTION STATEMENTS To help identify the label hazards on the Unit and explain the level of awareness each one carries, an explanation is given with the appropriate consequences: DANGER - - means an immediate hazard which WILL result in severe personal injury or death. WARNING - - means to warn against hazards or unsafe conditions which COULD result in severe personal injury or death.
  • Page 5 Section SAFETY SUMMARY ............GENERAL SAFETY NOTICES .

  • Page 6: Table Of Contents

    TABLE OF CONTENTS (CONTINUED) Section 3.3.1 Brief Description 3.3.2 DataCORDER Configuration 3.3.3 DataCORDER Function Codes 3.3.4 DataCORDER Alarms 3.3.5 Access to DataCORDER Functions 3.3.6 USDA/ Message Trip Comment 3.3.7 USDA Recording 3.3.8 Pre-Trip Data Recording 3.3.9 DataCORDER Communications 3.3.10 DataCORDER Scrollback USDA COLD TREATMENT PROCEDURE OPERATION .

  • Page 7: Section Page

    TABLE OF CONTENTS (CONTINUED) Section SERVICE ..............MANIFOLD GAUGE SET SUCTION AND DISCHARGE SERVICE VALVES PUMPING THE UNIT DOWN...
  • Page 8 TABLE OF CONTENTS (CONTINUED) Section 6.26 THERMOSTATIC EXPANSION VALVE 6.27 CONTROLLER/DATACORDER 6.27.1 Controller/DataCORDER Programming Procedure 6.27.2 Controller Trouble-Shooting 6.28 WATER-COOLED CONDENSER ELECTRICAL WIRING SCHEMATIC AND DIAGRAMS INTRODUCTION ........... INDEX .
  • Page 9 LIST OF ILLUSTRATIONS (CONTINUED) Figure Figure 6-1 Manifold Gauge Set Figure 6-2 R-134a Manifold Gauge Set Connection Figure 6-3 Suction or Discharge Service Valve Figure 6-4 Vacuum Pump Connections Figure 6-5 Compressor -- Model 06DR Figure 6-6 Exploded View of Valve Plate Figure 6-7 Bottom Plate Removed Figure 6-8 Oil Pump and Bearing Head Figure 6-9 Low Profile Gear Oil Pump...
  • Page 10 Table Table 1-1 Model Chart ........... Table 2-1 Safety and Protective Devices Table 3-1...
  • Page 11 NOTE Beginning with early 1995 production, in addition to a model number, Carrier Transicold began using a parts identification (PID) number in the format NT0000. In the parts manual, the PID number is shown in boldface to point out parts variations within models.

  • Page 12: Table 1-1 Model Chart

    MODEL NT0001 69NT40-511-1 69NT40 511 1 NT0062 NT0002 69NT40-511-2 69NT40 511 2 NT0017 69NT40-511-3 NT0007 69NT40-511-4 NT0037 NT0011 NT0038 69NT40-511-5 69NT40-511-5 NT0099 69NT40-511-6 NT0013 69NT40-511-7 NT0014 NT0005 NT0037 69NT40-511-8 69NT40-511-8 NT0094 NT0064 NT0089 69NT40-511-9 69NT40-511-9 NT0152 NT0024 NT0027 NT0040 NT0041...
  • Page 13 MODEL MODEL 69NT40-511-18 NT0035 69NT40-511-19 NT0037 69NT40-511-21 NT0055 NT0046 NT0121 69NT40-511-22 NT0139 NT0252 NT0050 69NT40 511 23 69NT40-511-23 NT0069 69NT40-511-24 NT0051 69NT40-511-25 NT0053 NT0047 69NT40 511 26 69NT40-511-26 NT0175 69NT40-511-27 NT0056 NT0057 69NT40-511-28 NT0132 NT0059 NT0219 69NT40-511-29 NT0343 69NT40-511-30 NT0060 69NT40-511-31 NT0061 NT0067...
  • Page 14 MODEL MODEL NT0074 NT0135 NT0208 NT0246 69NT40 511 38 69NT40-511-38 NT0253 NT0267 NT0307 NT0078 NT0084 69NT40-511-39 69NT40-511-39 NT0095 NT0079 NT0085 69NT40-511-40 69NT40-511-40 NT0096 NT0080 69NT40-511-41 69NT40 511 41 NT0090 69NT40-511-42 NT0088 69NT40-511-43 NT0081 NT0091 NT0102 NT0137 NT0185 69NT40-511-44 NT0213 NT0244 NT0266 69NT40-511-45 NT0092...
  • Page 15 MODEL MODEL NT0103 NT0134 NT0184 NT0216 NT0268 NT0282 69NT40 511 49 69NT40-511-49 NT0283 NT0303 NT0308 NT0341 NT0345 NT0106 69NT40-511-50 69NT40 511 50 NT0178 NT0107 NT0207 69NT40-511-51 NT0417 NT0109 NT0111 NT0133 69NT40-511-52 NT0162 NT0225 69NT40-511-53 NT0113 NT0118 NT0136 69NT40-511-54 69NT40-511-54 NT0215 NT0120 69NT40 511 55 69NT40-511-55...
  • Page 16 MODEL MODEL NT0105 NT0122 NT0138 NT0141 NT0160 NT0161 NT0189 69NT40-511-58 69NT40 511 58 NT0240 NT0269 NT0309 NT0340 NT0386 NT0418 NT0428 NT0167 NT0174 NT0211 69NT40-511-59 69NT40-511-59 NT0272 NT0312 NT0125 69NT40-511-60 69NT40 511 60 NT0153 NT0126 69NT40-511-61 69NT40 511 61 NT0154 69NT40-511-62 NT0127 NT0140 69NT40 511 63...
  • Page 17 MODEL MODEL NT0166 69NT40 511 71 69NT40-511-71 NT0235 NT0157 69NT40 511 72 69NT40-511-72 NT0200 69NT40-511-73 NT0158 NT0159 69NT40-511-74 69NT40 511 74 NT0223 69NT40-511-75 NT0163 69NT40-511-76 NT0169 69NT40-511-77 NT0176 69NT40-511-78 NT0182 69NT40-511-79 NT0190 69NT40-511-80 NT0165 NT0151 NT0168 69NT40-511-81 NT0180 NT0236 NT0258 NT0187 NT0198 69NT40-511-82...
  • Page 18 MODEL MODEL 69NT40-511-90 NT0222 NT0202 NT0238 69NT40 511 91 69NT40-511-91 NT0278 NT0318 69NT40-511-92 NT0218 69NT40-511-93 NT0197 NT0204 NT0262 69NT40 511 94 69NT40-511-94 NT0265 NT0220 NT0322 69NT40-511-95 69NT40-511-95 NT0344 NT0365 69NT40-511-96 NT0224 69NT40-511-97 NT0228 NT0285 NT0322 69NT40-511-98 NT0297 69NT40-511-99 NT0245 69NT40-511-100 NT0247 NT0250 NT0298...
  • Page 19 MODEL MODEL NT0275 NT0277 NT0315 69NT40 511 107 69NT40-511-107 NT0354 NT0381 NT0385 69NT40-511-108 NT0264 69NT40-511-109 NT0284 NT0288 NT0296 69NT40 511 110 69NT40-511-110 NT0347 NT0349 NT0286 NT0295 69NT40-511-111 69NT40-511-111 NT0429 NT0289 69NT40 511 112 69NT40-511-112 NT0325 69NT40-511-113 NT0294 NT0290 NTO326 NT0335 69NT40 511 114 69NT40-511-114 NT0336...
  • Page 20 2.1 GENERAL DESCRIPTION a. Refrigeration Unit - - Front Section The front section of the refrigeration unit shows access to most parts of the unit (i.e., compressor, condenser, receiver, etc.), which will be discussed in more detail of the following sections in 2.1. The upper access panels 1.
  • Page 21 b. Evaporator Section evaporator section contains mechanical temperature recording bulb, return recorder sensor (RRS), return temperature sensor (RTS), thermostatic expansion valve, dual-speed evaporator fan motors and fans (2), evaporator coil and heaters, drain pan and heater, defrost termination sensor, heat termination thermostat, and heat exchanger.

  • Page 22: Thermostatic Expansion Valve

    1. Evaporator Fan Motor #1 (EM1) 2. Humidity Sensor (HS) -- Optional 3. Return Recorder Sensor (RRS) 4. Return Temperature Sensor (RTS) 5. Mechanical Recording Thermometer Bulb 6. Mechanical Recording Thermometer Bulb -- Used on PID NT0073 7. Evaporator Fan Motor #2 (EM2) 8.

  • Page 23: Figure 2-3 Compressor Section

    c. Compressor Section The compressor section includes the compressor, power cable storage compartment, and an optional transformer (refer to Table 1-1 and Figure 2-9), which is located to 1. Power Autotransformer -- Optional 2. Power Cables and Plug 3. Compressor Sight Glass View Port 4.

  • Page 24: Figure 2-4 Condenser Section

    d. Condenser Section The condensing section consists of a condenser fan motor, a condenser fan and an air-cooled condenser coil. 1. Grille and Venturi Assembly 2. Retaining Screw 3. Condenser Fan 4. Key When the unit is operating, air is pulled in the bottom of the coil and discharged horizontally out through the front of the condenser fan grille.

  • Page 25: Figure 2-5 Units With Receiver

    e. Receiver Section The receiver section consists of quench expansion valve, manual liquid line valve, filter-drier, receiver with sight glass/moisture-liquid indicator, condenser pressure transducer (CPT), fusible plug, suction modulation valve, suction solenoid valve, and 1. Discharge Pressure Regulator Valve 2. Suction Modulation Valve (SMV) 3.

  • Page 26: Figure 2-6 Units With Water-Cooled Condenser

    f. Water-Cooled Condenser Section (Optional) The water-cooled condenser section consists of water-cooled condenser, sight glass, moisture-liquid indicator, quench expansion valve, rupture disc, condenser pressure transducer (CPT), filter-drier, suction modulation valve, suction solenoid valve, 1. Discharge Pressure Regulator Valve 2. Suction Modulation Valve (SMV) 3.

  • Page 27: Figure 2-7 Control Box On Units With A Single-Speed Compressor

    g. Control Box with a Single-Speed Compressor The control box includes the manual switches, circuit breaker(s), contactors, transformer, fuses, key pad, display module, current 1. Compressor Contactor (CH) 2. Hour Meter (HM) -- Optional 3. Heat Contactor (HR) 4. Display Module 5.

  • Page 28: Controller/Datacorder

    h. Control Box with a Two-Speed Compressor (Optional) The control box includes the manual switches, circuit breaker(s), contactors, transformer, fuses, key pad, CAUTION: DO NOT MANUALLY ENGAGE CONTACTORS 1. Compressor Contactor (CH) High Speed 2. Compressor Contactor (CL) Low Speed 3.

  • Page 29: System Data

    2.2 REFRIGERATION SYSTEM DATA i. Compressor/Motor Assembly i. Compressor/Motor Assembly j. Expansion Valve Superheat k Heater Termination Thermostat k. Heater Termination Thermostat l. High Pressure Switch High Pressure Switch m. Refrigerant Charge When replacing the components (n.), (o.) and (p.) in section 2.2, refer to the installation instructions included with the ordered new part for additional information.
  • Page 30 2.3 ELECTRICAL DATA CB-1 Trips at CB-2 (50 amp) Trips at a. Circuit Breaker a. Circuit Breaker CB-2 (70 amp) Trips at b. Compressor Full Load Amps (FLA) Motor Full Load Amps Horsepower c. Condenser Fan Rotations Per Minute Motor Motor Voltage and Frequency Bearing Lubrication...

  • Page 31: Figure 2-9 Power Autotransformer (Optional)

    Orange wire Red wire Brown wire Input voltage Output voltage i. Humidity Sensor i. Humidity Sensor (HS) - - Optional Output voltage readings verses relative humidity (RH) percentage: 2.4 POWER AUTOTRANSFORMER (Optional) WARNING Do not attempt to remove power plug(s) before turning OFF start-stop switch (ST), unit circuit breaker(s) and external power source.
  • Page 32 2.5 UPPER FRESH AIR MAKEUP VENT The purpose of the fresh air makeup vent is to provide ventilation for commodities that require fresh air circulation. The vent must be closed when transporting frozen foods or controlled atmosphere loads. Air exchange depends on static pressure differential, which will vary depending on the container and how the container is loaded.
  • Page 33 2.7 REFRIGERATION CIRCUIT WITH RECEIVER Starting at the compressor, the suction gas is compressed to a higher temperature and pressure. When operating with the air-cooled condenser, the gas flows through the discharge service valve into the pressure regulator valve that is normally open. The pressure regulator valve restricts the flow of refrigerant to maintain a minimum discharge pressure of 5 kg/cm@ (70 psig).

  • Page 34: Figure 2-10 Refrigeration Circuit With Receiver

    1. Suction Service Valve 2. Discharge Service Valve 3. Discharge Pressure Regulator Valve 4. Air-Cooled Condenser 5. Evaporator 6. Thermostatic Expansion Valve 7. External Equalizer Line 8. Thermostatic Expansion Valve Bulb 9. Heat Exchanger 10. Fusible Plug (Located on back of receiver) Figure 2-10.
  • Page 35 2.8 REFRIGERATION CIRCUIT WITH THE WATER-COOLED CONDENSER (Optional) Starting at the compressor, the suction gas is compressed to a higher temperature and pressure. When operating with the water-cooled condenser, the gas flows through the discharge service valve into the pressure regulator valve that is normally open. The pressure regulator valve may restrict the flow of refrigerant to maintain a minimum discharge pressure of 5 kg/cm@ (70 psig).

  • Page 36: Figure 2-11 Refrigeration Circuit With Water-Cooled Condenser (Optional)

    1. Suction Service Valve 2. Discharge Service Valve 3. Discharge Pressure Regulator Valve 4. Air-Cooled Condenser 5. Evaporator 6. Thermostatic Expansion Valve 7. External Equalizer Line 8. Thermostatic Expansion Valve Bulb 9. Heat Exchanger 10. Rupture Disc Figure 2-11. Refrigeration Circuit with Water-Cooled Condenser (Optional) 11.
  • Page 37 2.10 SUCTION SOLENOID VALVE The suction solenoid valve, shown in Figure 2-5, is controlled by the Controller relay (TS). a. Operation If set point is below - -10_C (+14_F), or - -5_C (+23_F) optionally, and the suction solenoid valve override is not activated, Controller relay (TS) closes to energize the suction solenoid valve (SSV).

  • Page 38: Table 2-1 Safety And Protective Devices

    2.12 SAFETY AND PROTECTIVE DEVICES Unit components are protected from damage by safety and protective devices listed in Table 2-1. These devices monitor the unit operating conditions and open a set of electrical contacts when an unsafe condition occurs. Open safety switch contacts on either or both of devices Table 2-1.

  • Page 39: Brief Description

    5. Control Circuit Power Connection (Location: In back of connector) 6. Battery Pack (Optional) 7. Software Programming Port 8. Mounting Screw Carrier Controller/DataCORDER microprocessor-based module which incorporates embedded software to: a. Control supply or return air temperature to extremely tight limits by providing modulated...
  • Page 40 Provide reprogrammability and configuration through a memory card. The memory card automatically downloads new software to the Controller when inserted, and controls output to the display for status information. g. Provide electronic data storage. NOTE For the benefit of the reader the remaining parts of section 3.1 will devote themselves to the temperature controller portion of the module.

  • Page 41: Table 3-1 Controller Configuration Variables

    Table 3-1. Controller Configuration Variables CONFIGURATION NUMBER Bypass Valve Enable Evaporator Fan Speed Number of Sensor Probes Dehumidification Mode Probe Calibration Condenser Fan Speed Select Unit Selection, 20FT/ 40FT/45FT Single Phase/Three Phase Motor Refrigerant Selection Compressor Speed Defrost “Off” Selection TXV/Solenoid Quench Valve Unloader Condenser Pressure Control (CPC)

  • Page 42: Table 3-2 Key Pad Function

    3.1.3 General Layout of the Controller Section The Micro-Link 2i Controller/DataCORDER consists of a key pad, display module and Controller module. Connectors are used to attach the wiring of the unit to the Controller module. The Controller module is designed to permit ease of installation and removal. All control functions are accessed by key pad selections and viewed on the display module which are designed for optimum user friendliness and convenience.
  • Page 43 The display module (see Figure 3-2) is mounted at a 20 degree downward tilt to aid in visibility. The display module consists of: a. Two 25mm (1 inch) high, five digit LCD displays which are easily viewed in direct sunlight and backlighted for superior low-light visibility.

  • Page 44: Table 3-3 Controller Function Code Assignments

    3.1.4 Controller Function Codes There are thirty-nine functions which the operator may access to examine the operating status of the unit. To access these functions, perform the following steps: Press the CODE SELECT key, then press an arrow key until the left window displays the desired code number Table 3-3.
  • Page 45 CODE TITLE Inapplicable Functions Display - -- -- -- -- - Condenser pressure is displayed using a pressure transducer. Pressure is displayed in units of psig when code 28 is set to _F and units of bars when Condenser Pressure Cd13 function code Cd28 is set to _C.

  • Page 46: Display Only Functions

    CODE TITLE Function codes Cd27 through Cd37 are user-selectable functions. The operator can change the value of these functions to meet the operational needs of the container. The defrost interval is the time interval between defrost cycles. Five selectable values are available: 3, 6, 9, 12 or 24 hours. The factory default value is 12 hours. The time interval of the first defrost will not begin counting down until defrost termination sensor (DTS) is below 10_C (50_F).
  • Page 47 CODE TITLE Inapplicable Functions Display - -- -- -- -- - The current limit is the maximum current demand allowed on any phase at any time. Limiting the unit’s current (amperage) reduces the load on the main power Current Limit and lowers the compressor discharge pressure.

  • Page 48: Controller Alarms

    CODE TITLE This code is only applicable to units without a DataCORDER, that are configured Secondary Return to have four probes. If this is true, it will then display the current secondary return Cd39 Air Temperature air temperature.If the unit is configured with a DataCORDER, the Controller (Optional) function code Cd39 will display “----------,”...

  • Page 49: Table 3-4 Controller Alarm Indications

    Table 3-4. Controller Alarm Indications CODE TITLE Alarm 11 is triggered by the opening of the internal protector for evaporator fan Evaporator Fan motor #1. This alarm will disable the probe check portion of defrost and the probe AL11 Motor 1 Safety diagnostic logic.
  • Page 50 CODE TITLE Alarm 53 is caused by the nicad battery pack being too low of a charge for battery-backed recording. NiCad Battery Pack AL53 Failure Alarm 54 is activated by an invalid primary supply sensor reading that is sensed outside the range of --50 to +70_C (--58_F to +158_F) or if the probe check logic has determined there is a fault with this sensor.
  • Page 51 CODE TITLE Alarm 63 is triggered by the current limiting system. If the compressor is ON and current limiting procedures cannot maintain a current level below the user selected limit, the current limit alarm is activated.This alarm is a display alarm and AL63 Current Over Limit is inactivated by power cycling the unit, changing the current limit via the code select Cd32, or if the suction modulation valve (SMV) is allowed to open to 100%...
  • Page 52 3.1.6 Condenser Pressure Control (CPC) A pressure control system has been incorporated by means of a condenser pressure transducer (CPT) and condenser pressure control (CPC) logic to maintain discharge pressures above temperatures. In order for the CPC logic to be enabled, the following conditions must be met: CPC configuration variable set to “In”...
  • Page 53 modulation valve (SMV) and suction solenoid valve (SSV) with the compressor energized. When pulling down from a control temperature that is more than 5_C (9_F) above set point, both valves will be open to reduce the pulldown time unless suction solenoid override or current limiting is activated.
  • Page 54 out-of-range or compressor shutdown condition, the heat relay is de-energized immediately. The out-of-range timer is provided to allow the heaters to remain energized during a temporary out-of-range condition. If the control probe temperature remains outside of the user selected in-range setting for more than five minutes, the heaters will be de-energized to allow the system to recover.
  • Page 55 3.1.7.2 Frozen Range Below - -10_C (+14_F), or - -5_C (+23_F) Optionally For set points below - -10_C (+14_F), or - -5_C (+23_F) optionally, the Controller maintains RETURN air at the set point temperature using the following modes of operation: a.

  • Page 56: Pre-Trip

    the VENT mode is selected on the CA Controller. The user must scroll through the selection by pressing the UP ARROW or DOWN ARROW keys, then pressing the ENTER key when the selection is made. While the tests are being executed, the user can terminate the pre-trip mode by holding the PRE-TRIP key.

  • Page 57: Table 3-5 Pre-Trip Test Codes

    c. Auto Test Operation From Serial Communications Pre-trip may also be initiated via communications. The operation is the same as for the Auto Test mode described above except that should a test fail, the pre-trip mode will automatically terminate. When initiated via communications, a test may not be interrupted with an arrow key, but the pre-trip mode can be terminated with the PRE-TRIP key.
  • Page 58 CODE TITLE Setup: The high speed Evaporator Fan is turned off, a current draw test is done High Speed after 10 seconds. Evaporator Fan P4-1 Pass/Fail Criteria: Passes if change in current draw is within the range Motors Off specified. Fails if AL11 or AL12 activates during test. Setup: The High Speed Evaporator Fan is turned on and run for eight minutes, with all other outputs de-energized.
  • Page 59 CODE TITLE Setup: The compressor is started. If it is the first compressor start, the compressor reliability enhancement logic (CREL) is executed, running a current draw test with the additional outputs (if installed) in the following states: High Speed Component Compressor Tests P6-H P6-H...
  • Page 60 CODE TITLE Starting with test P7-0 through test P10, these tests are only included with the “Auto2” (Optional) selection menu. (Refer to section 3.2.1.) Setup: When the unit is running, the condenser fan is de-energized, and a 15 minute timer is started. The right display shows discharge pressure if equipped with the discharge pressure transducer (DPT), or condenser pressure if equipped with a condenser pressure transducer (CPT), or discharge pressure if equipped with either a discharge pressure transducer (DPT) or a condenser...
  • Page 61 CODE TITLE Requirements: Control temperature must be at least 60_F. Setup: The set point is changed to 32_F, and a 180 minute timer is started. The left display will read “P8-1,” the right display will show the supply air temperature. Perishable Mode P8-1 The unit will then start to pull down the container temperature to the 32_F set...
  • Page 62 3.3 INTEGRATED DATACORDER (OPTIONAL) 3.3.1 Brief Description Carrier Transicold has developed a recorder, which we have termed the “DataCORDER,” and is integrated into a module with the Controller. For reader simplicity and understanding this section has been separated to explain the DataCORDER side of the module.

  • Page 63: Datacorder Configuration

    Real Time Clock (RTC) Modification Pre-Trip result & data Trip Start ISO Trip Header (Must be entered first via Interrogation program) Economy Mode Start Economy Mode End “Auto 2” Pre-Trip Start “Auto 2” Pre-Trip End Bulb Mode Start Bulb Mode changes Bulb Mode End USDA Trip Comment CTD Controlled Atmosphere Information...

  • Page 64: Datacorder Function Codes

    3.3.3 DataCORDER Function Codes There are 35 functions which the operator may access to examine the operating status of the unit. To access these functions, perform the following: Press the ALT. MODE & CODE SELECT keys, press an arrow key Table 3-6.

  • Page 65: Datacorder Alarms

    3.3.4 DataCORDER Alarms To Display Alarm Codes: While in Set Point Selection or Default Display mode, press the ALT. MODE & ALARM LIST keys. This accesses the Alarm List Display Mode, which displays any alarms stored in the Alarm Queue. The user may scroll to the end of the alarm list by pressing the UP ARROW key after the ALARM LIST key is depressed.

  • Page 66: Table 3-7 Datacorder Alarm Indications

    To Access: Press ALT. MODE key CODE # TITLE Recorder Supply AL70 Temperature Out of Range Recorder Return AL71 Temperature Out of Range USDA Temperatures 1, AL72-74 2, 3 Out of Range Cargo Probe 4 Out of AL75 Range AL76, 77 Future Expansion Network Sensors 1 -- 8 AL78-85...

  • Page 67: Access To Datacorder Functions

    The DataCORDER alarms for the USDA and cargo probes are configurable using the interrogation program or via a configuration card. There are four configuration variables for the DataCORDER, which are listed in Table 3-8 with their descriptions and selection values. Table 3-8.

  • Page 68: Table 3-9 Datacorder Standard Configuration

    e. Display vs. Configuration Codes The DataCORDER contains two types of display codes; Display and Configuration. Display codes will display parameter values, but will not let them be modified. Configuration codes can be modified via the interrogator or with the insertion of the common configuration software card.

  • Page 69: Usda/ Message Trip Comment

    “dALnn” where nn = the alarm Left Display: history entry 01-08 Right “xA nn” where x = “I” (inactive) or “A” Display: (active) “----------” if no alarms are currently in the alarm history list h. Alarm Processing The DataCORDER contains an eight alarm history queue which will contain the first eight alarms detected by the DataCORDER.

  • Page 70: Datacorder Scrollback

    In response to the demand to replace fumigation with this environmentally sound process, Carrier has integrated this Cold Treatment capability into its DataCORDER. These units have the ability to maintain...

  • Page 71: Table 3-10 Datacorder Pre-Trip Data

    Table 3-10. DataCORDER Pre-Trip Data TEST # TITLE “Auto” or “Auto1” menu includes the following: P, P1, P2, P3, P4, P5, P6 and rSLts. “Auto2’ (Optional) menu includes the following: P, P1, P2, P3, P4, P5, P6,P7, P8, P9, P10 and rSLts. (Refer to section 3.2.1.) Heater On Heater Off Condenser Fan On...

  • Page 72: Figure 3-3 Standard Configuration Report Sample

    CONTAINER ABCDXXXXXXX ON 08Jul 94 FROM 15Apr94 TO 17Apr94 (DEGREES C) DataCorder SN: XXXXXXXX ALARM NUM FIRST ACTIVE CONTROLLER ALARMS: 17Apr94 03:28 DATACORDER ALARMS No Alarms Reported DATE: 15Apr94 23:49 Trip Start Setpoint Change PS, PE Pretrip Start/End NEW SN Controller Rep.

  • Page 73: Figure 3-4 Controller Set Point Below --10_C (+14_F), Or --5_C (+23_F) Optionally

    FALLING TEMPERATURE COOLING - -0.20_C CIRCULATION ONLY For In-range Tolerance, Refer to section 3.1.4 Code 30. Figure 3-4. Controller Set Point BELOW - -10_C (+14_F), or - -5_C (+23_F) optionally FALLING TEMPERATURE MODULATING COOLING * AIR CIRCULATION ONLY HEATING For In-range Tolerance, Refer to section 3.1.4 Code 30. * For Two-Speed compressor operation refer to Figure 3-6.

  • Page 74: Figure 3-6 Two-Speed Compressor Speed Change Logic -- Perishable Range Only

    STEP Compressor Starting Sequence Is Ambient Temperature Less Than 60 ˚F ? High Speed Start Does High Pressure Switch (HPS) Trip ? Has Compressor Run For 20 Minutes ? Has Set Point Been Reached ? Is The Operating Capacity * Below Low Speed Capacity ? Is Supply Voltage Greater Than...

  • Page 75: Figure 3-7 Two-Speed Compressor Speed Change Logic -- Frozen Range Only

    STEP Compressor Starting Sequence Is Ambient Temperature Less Than 60 ˚F ? High Speed Start Has Set Point Been Reached ? Continue In High Speed Figure 3-7. Two-Speed Compressor Speed Change Logic - - Frozen Range Only Low Speed Soft Start (See Note A &...

  • Page 76: Operation

    4.1 PRE-TRIP INSPECTION (Before Starting) WARNING Beware of unannounced starting of the evaporator and condenser fans. a. If container is empty, check inside for the following: 1. Check channels or “T” bars on floor for cleanliness. Channels must be free of debris for proper air circulation.

  • Page 77: Starting And Stopping Instructions

    4.2 STARTING AND STOPPING INSTRUCTIONS CAUTION Make sure that the unit circuit breaker(s) (CB-1 & CB-2) and the start-stop switch (ST) are in the OFF position before connecting to any electrical power source. a. Starting the Unit NOTE The evaporator fans will always start in high speed regardless of set point and will switch to low speed after approximately 20 to 30 seconds if the set point is below - -10_C (+14_F), or...

  • Page 78: Cooling -- Controller Set Below --10_C (+14_F), Or --5_C (+23_F) Optionally

    If AL55 is active, meaning that the DataCORDER (DC) functionality is no longer active (DC configuration variable off), the Controller will act as a four probe configured system during probe checks. The only differences will be that the Controller Function Codes Cd38 and Cd39 will become enabled thus allowing access to the secondary probe readings since the DC functions, codes and alarms have become deactivated.
  • Page 79 When the air temperature decreases to a predetermined tolerance above set point, relay TI energizes and the in-range light is illuminated. (Refer to section 3.1.4, Code 30.) If the air temperature continues to fall, modulating cooling starts at approximately 2.5_C (4.5_F) above set point.

  • Page 80: Figure 4-1 Cooling In High Speed With Two-Speed Compressor

    CONTROL TRANSFORMER = 18 Volt Energized Circuit = 24 Volt Energized Circuit = De-energized Circuit Figure 4-1. Cooling in High Speed with Two-Speed Compressor T-268-07...
  • Page 81 b. Cooling in Low Speed with Two-Speed Compressor (See Figure 4-2.) NOTE Evaporator fan motors will run in high speed. (Contactor EF energized) NOTE pressure control system incorporated by means of a condenser pressure transducer (CPT) and condenser pressure control (CPC) logic to maintain discharge pressures above 130 psig in low ambients.

  • Page 82: Figure 4-2 Cooling In Low Speed With Two-Speed Compressor

    CONTROL TRANSFORMER = 18 Volt Energized Circuit = 24 Volt Energized Circuit = De-energized Circuit Figure 4-2. Cooling in Low Speed with Two-Speed Compressor T-268-07...
  • Page 83 c. Cooling with Single-Speed Compressor (See Figure 4-3.) NOTE Evaporator fan motors will run in high speed. (Contactor EF energized) NOTE pressure control system incorporated by means of a condenser pressure transducer (CPT) and condenser pressure control (CPC) logic to maintain discharge pressures above 130 psig in low ambients.

  • Page 84: Figure 4-3 Cooling With Single-Speed Compressor

    CONTROL TRANSFORMER = 18 Volt Energized Circuit = 24 Volt Energized Circuit = De-energized Circuit Figure 4-3. Cooling with Single-Speed Compressor T-268-07...

  • Page 85: Heating (See Figure 4-4.)

    4.4.5 Heating (See Figure 4-4.) The unit will heat only when the controller set point is above - -10_C (+14_F), or - -5_C (+23_F) optionally, as relay TH is electronically locked out to prevent heating when the controller set point is below - -10_C (+14_F), or - -5_C (+23_F) optionally.

  • Page 86: Figure 4-4 Heating Mode

    CONTROL TRANSFORMER = 18 Volt Energized Circuit = 24 Volt Energized Circuit = De-energized Circuit Figure 4-4. Heating Mode 4-11 T-268-07...

  • Page 87: Defrost

    4.4.6 Defrost Refer to section 3.1.4 (Code 27) for description of the defrost interval selector and automatic defrost initiation. The defrost cycle (see Figure 4-5) consists of two distinct sub-cycles. The first sub-cycle is the de-ice cycle, the second is a probe check cycle. Defrost may take place any time the DTS allows, and no shutdown alarms are active.
  • Page 88 If Pre-Trip is initiated during the 30 minute time period, Pre-Trip will be allowed to run normally. Once Pre-Trip is over, the controller will revert to its normal control mode logic. If ambient is warmer than - -10.0_C, the system will run = 18 Volt Energized Circuit its normal startup logic.

  • Page 89: Table 4-1. Electrical Control Positions - - Below - -10_C (+14_F), Or - -5_C (+23_F) Optionally

    Table 4-1. Electrical Control Positions - - BELOW - -10_C (+14_F), or - -5_C (+23_F) optionally CONTROL CIRCUIT COOLING Single-Speed Compressor: Compressor Contactor Energized Two-Speed Compressor: Compressor Contactor Energized (CH) Compressor Contactor Energized (CS) Compressor Contactor De-energized (CL) Condenser Fan Energized Contactor (CF) High Speed Evaporator...

  • Page 90: Table 4-2. Electrical Control Positions - - Above - -10_C (+14_F), Or - -5_C (+23_F) Optionally

    Table 4-2. Electrical Control Positions - - ABOVE - -10_C (+14_F), or - -5_C (+23_F) optionally CONTROL CIRCUIT COOLING Single-Speed Compressor: Compressor Contactor Energized Two-Speed Compressor in high speed mode: Compressor Contactor Energized (CH) Compressor Contactor Energized (CS) Compressor Contactor De-energized (CL) Two-Speed Compressor in low speed mode:...

  • Page 91: Troubleshooting

    CONDITION 5.1 UNIT WILL NOT START OR STARTS THEN STOPS No power to unit Loss of control power Loss of control power in respective branch of control circuit only Loss of control power in respective branch of control circuit only Compressor hums, but does not start Compressor will occasionally...

  • Page 92: Unit Will Not Heat Or Has Insufficient Heating

    CONDITION 5.4 UNIT WILL NOT HEAT OR HAS INSUFFICIENT HEATING No power to unit No control power Unit will not heat or has insufficient heat 5.5 UNIT WILL NOT TERMINATE HEATING Unit fails to stop heating 5.6 UNIT WILL NOT DEFROST PROPERLY Will not initiate defrost automatically Will not initiate defrost manually Initiates but relay (DR) drops out...

  • Page 93: Abnormal Pressures (Cooling)

    CONDITION 5.7 ABNORMAL PRESSURES (COOLING) High discharge pressure Low suction pressure Suction and discharge pressures tend to equalize when unit is operating 5.8 ABNORMAL NOISE OR VIBRATIONS Compressor Condenser or Evaporator Fan 5.9 TEMPERATURE CONTROLLER MALFUNCTION Will not control 5.10 NO EVAPORATOR AIR FLOW OR RESTRICTED AIR FLOW Evaporator coil blocked No or partial evaporator air flow POSSIBLE CAUSE...

  • Page 94: Thermostatic Expansion Valve Malfunction

    CONDITION 5.11 THERMOSTATIC EXPANSION VALVE MALFUNCTION Low suction pressure with high superheat High suction pressure with low superheat Liquid slugging in compressor Fluctuating suction pressure 5.12 POWER AUTOTRANSFORMER MALFUNCTION Unit will not start 5.13 WATER-COOLED CONDENSER OR WATER PRESSURE SWITCH High discharge pressure Condenser fan starts and stops T-268-07...

  • Page 95: Service

    To avoid damage to the earth’s ozone layer, 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. 6.1 MANIFOLD GAUGE SET The manifold gauge set can be used to determine system operating pressure, add a refrigerant charge, and to equalize or evacuate the system.
  • Page 96 CAUTION To prevent trapping liquid refrigerant in the service valve after charging, perform the following steps while the compressor is ON and before disconnecting the manifold gauge set: Backseat applicable discharge or manual liquid line valve. Midseat manifold gauge set hand valves. Allow the gauge set to pull down to suction pressure.

  • Page 97: Figure 6-2 R-134A Manifold Gauge Set Connection

    To Suction Service Port Blue Hose Blue Knob Manifold Gauge Set Hose Fitting (0.500-16 Acme) Refrigeration or Evacuation Hoses (SAE J2196/R-134a) Hose Fitting w/O-ring (M14 x 1.5) High Side Field Service Figure 6-2. R-134a Manifold Gauge Set Connection Red Hose Yellow Hose Coupling Low Side Field Service...

  • Page 98: Suction And Discharge Service Valves

    6.2 SUCTION AND DISCHARGE SERVICE VALVES The suction and discharge service valves used on the compressor are equipped with mating flanges for connection to flanges on the compressor. These valves are provided with a double seat and a gauge connection which enable servicing of the compressor and refrigerant lines.

  • Page 99: Refrigerant Charge

    d. Evacuate and dehydrate the unit. (Refer to section 6.5.) e. Charge unit per section 6.6. 6.5 EVACUATION AND DEHYDRATION 6.5.1 General Moisture is the deadly enemy of refrigeration systems. The presence of moisture in a refrigeration system can have many undesirable effects. The most common are copper plating, acid sludge formation, “freezing-up”...
  • Page 100 b. For Units equipped with receiver: partially block the condenser coil inlet air, starting from the front of the condenser coil. Increase the area blocked until the compressor discharge pressure is raised to approximately 12 kg/cm@ (175 psig). Refrigerant level on the receiver will normally be between the sight glasses.

  • Page 101: Figure 6-4 Vacuum Pump Connections

    Refrigerant Recovery Unit Refrigerant Cylinder Evacuation Manifold (R-134a) Hand Valve Vacuum Pump Electronic Vacuum Gauge Figure 6-4. Vacuum Pump Connections Manual Liquid Line Valve Condenser Coil Suction Service Valve Compressor Discharge Service Valve Evaporator Coil T-268-07...

  • Page 102: Model 06Dr Compressor

    6.6.2 Adding Refrigerant to System (Full Charge) a. Evacuate unit and leave in deep vacuum. (Refer to section 6.5.) b. Place cylinder of R-134a on scale and connect charging line from cylinder to liquid line valve. Purge charging line at liquid line valve and then note weight of cylinder and refrigerant.

  • Page 103: Removal And Replacement Of Compressor

    1. Discharge Valve Flange 2. High Side Pressure Connection 3. Low Side Pressure Connection 4. Suction Valve Flange (Refer to note #7) 5. Motor End Cover 6. Serial/Model No. Plate 7. Crankcase Heater (Optional) 8. Bottom Plate 9. Sight Glass 10.

  • Page 104: Figure 6-6 Exploded View Of Valve Plate

    Table 6-4 and Table 6-5 for compressor wear limits and bolt torque values. a. Place the compressor in a position where it will be convenient to drain the oil. Remove the oil plug on the oil pump inlet passage (see Figure 6-8 for location) to vent the crankcase.

  • Page 105: Figure 6-8 Oil Pump And Bearing Head

    Set screw must be removed. 1. Oil Pump & Bearing Head 2. Thrust Washer 3. Oil Pickup Tube 4. Oil Inlet Port 5. Oil Pump Inlet Figure 6-8. Oil Pump and Bearing Head If it was determined that the oil pump is not operating properly, the entire oil pump and bearing head assembly must be replaced.

  • Page 106: Figure 6-11 Crankshaft Assembly

    opening after the piston rings are compressed. A piston ring compresser will facilitate removal. Each piston pin is locked in place by lock rings which are snapped into grooves in the piston wall. 1. Capscrew 2. Cap 3. Crankshaft 4. Thrust Washer 5.

  • Page 107: Compressor Reassembly

    6.9 COMPRESSOR REASSEMBLY To clean compressor parts, use a suitable solvent with proper precautions. Coat all moving parts with the proper compressor oil before assembly. Refer to Table 6-5 for applicable compressor torque values. 1. Suction Valve 2. Suction Valve Positioning Spring 3.

  • Page 108: Compressor Oil Level

    7. Install the oil suction screen, the oil suction screen hold down plate and the bottom plate. 6.10 COMPRESSOR OIL LEVEL CAUTION Use only Carrier Transicold approved Polyol Ester Oil (POE) - - Castrol-Icematic SW20 compressor oil with R-134a. Buy in quantities of one quart or smaller. When using this hygroscopic oil, immediately reseal.

  • Page 109: Filter-Drier

    suction service valve flange cavity or by removing the oil fill plug. (See Figure 6-5.) Some compressors have the oil plug located on the crankcase, at the right or left side of the oil pump. d. To Remove Oil From an 06DR Compressor: 1.

  • Page 110: Evaporator Coil And Heater Assembly

    Open cylinder valve. Slowly close bleed-off valve to increase pressure on switch. The switch should open at a static pressure up to 25 kg/cm@ (350 psig). If a light is used, light will go out. If an ohmmeter is used, the meter will indicate open circuits. g.

  • Page 111: Evaporator Fan Motor Capacitors

    by holding the spanner wrench stationary and turning the 5/8-18 nut counter-clockwise (see Figure 6-18). 1. Stator 2. Flat washer, 1/4 3. Bolt, 1/4-20 x 3/4 4. Locknut, 5/8-18 5. Flat washer, 5/8 6. Impeller Fan 7. Key 8. Mylar Protector 9.

  • Page 112: Condenser Coil

    WARNING With power OFF discharge the capacitor and disconnect the circuit wiring. c. Checking the capacitor If the capacitor is suspected of malfunction, you may choose to simply replace it. Direct replacement requires a capacitor of the same value. Two methods for checking capacitor function are: 1.
  • Page 113 (mounted to instrument case). A single probe is attached to the element (bulb) capillary which senses the container return air temperature. If using two probes, one probe will be attached to the supply air temperature sensor. In the event of a failure with the #344 test lead, other instruments for checking bulb temperatures are: Simpson Meter, CTC P/N 07-00013 or Robinair Thermistor Temperature Tester, Model 12860:...

  • Page 114: Saginomiya Recording Thermometer

    raises stylus indicated temperature reading; shortening shaft (clockwise) lowers stylus reading. Then retighten set screw. (b) Reset control at 0_C (32_F), start the refrigeration unit and repeat accuracy check. After temperature stabilization, recording thermometer should be within 0.3_C (1/2_F) limits. 1.

  • Page 115: Maintenance Of Painted Surfaces

    4. If adjustment is required, loosen setscrew (cross-recessed head). Using a 7 mm wrench, rotate the adjustment screw clockwise to set the stylus 1 to 2_C (1.8 to 3.6_F) higher than desired temperature. 5. Rotate the adjustment screw counterclockwise to set the stylus about 0.5_C (0.9_F) higher than set temperature.

  • Page 116: Replacing Sensor (Sts And Srs)

    completely immerse bulb) with ice cubes or chipped ice, then filling voids between ice with water and agitating until mixture reaches 0_C (32_F) measured on a laboratory thermometer. b. Start unit and check air temperature/data readout on the control panel. The reading should be 0_C (32_F);...

  • Page 117: Replacing Sensor (Rrs And Rts)

    41 mm (1-5/8 inches) Sensor 6.35 mm (1/4 inch) Figure 6-22. Sensor (RRS, RTS, SRS or STS) Strip back insulation on all wiring 6.35 mm (1/4 inch). g. Slide a large piece of heat shrink tubing over the cable, and place the two small pieces of heat shrink tubing, one over each wire, before adding crimp fittings as shown in Figure 6-23.

  • Page 118: Checking Sensor (Ambs Or Dts)

    position the enlarged positioning section of the sensor against the the side of the mounting clamp. NOTE The P5 Pre-Trip test must be run to inactivate the alarm (refer to section 3.2.1). Evaporator Grille Enlarged Positioning (Plastic) Section Figure 6-24. Return Sensor Positioning 6.23.4 Checking Sensor (AMBS or DTS) a.

  • Page 119: Suction Solenoid Valve (Ssv)

    6.24 SUCTION SOLENOID VALVE (SSV) a. Replacing the Coil NOTE The coil may be replaced without removing the refrigerant. 1. Disconnect leads by unplugging the connector. Remove snap cap or locknut. Lift off coil. (See Figure 6-27) 2. Verify coil type, voltage and frequency of old and new coil.

  • Page 120: Figure 6-28 Suction Modulation Valve (Smv)

    Ambient Temperature 10_ F 40_ F 70_ F 100_ F 4. Plug in the connector for the modulation valve. NOTE A cold coil is a coil which has not been operating and is assumed to be at ambient temperature. Hot coils, taken after the unit has been operating in deep modulation for a long period of time, may give higher resistance readings.

  • Page 121: Figure 6-29 Thermostatic Expansion Valve -- Alco

    1. Power Assembly 2. Body Flange Gaskets 3. Seat Gasket 4. Bulb 5. Cage Assembly 6. Body Flange 7. Body Flange Screws Figure 6-29. Thermostatic Expansion Valve - - Alco 5. The thermal bulb is located below the center of the suction line (4 o’clock position).

  • Page 122: Figure 6-31 Controller Side Of The Control Box

    NOTE Suction pressure must be 0.5 kg/cm@ (6 psig) below valve maximum operating pressure (M.O.P.). Example: if valve rated at 55 MOP, suction pressure must be below this MOP. Recommended pressure is below 3.44 kg/cm@ (49 psig). 6.27 CONTROLLER/DATACORDER a. Handling of Controller/DataCORDER These guidelines should be followed when handling the Controller/DataCORDER module.

  • Page 123: Controller/Datacorder Programming Procedure

    NOTE This packaging has been designed to protect the Controller/DataCORDER module from both physical and electrostatic discharge damage during storage and transit. Installation: Install the module by reversing the steps in section 6.27.b. Torque values for mounting screws (item 1, Figure 6-31) are 0.23 mkg (20 inch-pounds), and 0.12 mkg (10 inch-pounds) for all connectors (MA, MB, MC, KA &...

  • Page 124: Water-Cooled Condenser

    circuits (refer to section 5). A description of the test points follows: NOTE Use a digital voltmeter to measure ac voltage between TP’s and ground (TP9), except for TP8. This test point enables the user to check if the internal protector for the compressor motor (IP-CP) is open or closed (and the Auto Transformer-IP if so equipped).

  • Page 125: Figure 6-32 Water-Cooled Condenser Cleaning -- Forced Circulation

    7. Put unit back in service under normal load and check head (discharge) pressure. Detailed Procedure: 1. Drain and flush the water circuit of the condenser coil. If scale on the tube inner surfaces is accompanied by slime, a thorough cleaning is necessary before de-scaling process can be accomplished.

  • Page 126: Figure 6-33 Water-Cooled Condenser Cleaning -- Gravity Circulation

    NOTE If the condenser cooling water is not being used as drinking water or is not re-circulated in a closed or tower system, neutralizing is not necessary. 11. Put the unit back in service and operate under normal load. Check the head pressure. If normal, a thorough de-scaling has been achieved.

  • Page 127: Table 6-3 Recommended Bolt Torque Values

    Table 6-3. Recommended Bolt Torque Values BOLT DIA. THREADS TORQUE FREE SPINNING 5.2 in-lbs 9.6 in-lbs 20 in-lbs 23 in-lbs 75 in-lbs 5/16 11 ft-lbs 20 ft-lbs 7/16 31 ft-lbs 43 ft-lbs 9/16 57 ft-lbs 92 ft-lbs 124 ft-lbs NONFREE SPINNING (LOCKNUTS ETC.) 82.5 in-lbs 5/16 145.2 in-lbs...

  • Page 128: Table 6-5 Compressor Torque Values

    SIZE DIAMETER THREADS FT LB FT-LB (INCHES) PER INCH 1/16 27 (pipe) 8 -- 12 20 (pipe) 6 -- 10 20 (pipe) 20 -- 25 10 -- 12 12 -- 15 12 -- 16 6 -- 10 12 -- 16 16 -- 20 5/16 5/16...

  • Page 129: Table 6-6 Temperature-Pressure Chart -- R-134A

    Table 6-6. Temperature-Pressure Chart - - R-134a BOLD FIGURES = Inches Mercury Vacuum (cm Hg VAC) LIGHT FIGURES = psig (kg/cm@) TEMPERATURE PRESSURE _ _ _ _ F _ _ _ _ C Psig Kg/cm --40 --40 14.6 37.08 --35 --37 12.3 31.25...
  • Page 130 Note: Curves to be used as troubleshooting guide only for model series 69NT40-511 with fresh air makeup vent closed, unit powered on 460 VAC/60hz and SMV 100% open. (Bar) psig (22.0) (20.7) (19.3) (17.9) (16.6) (15.2) (13.8) (12.4) (11.0) (9.7) (8.3) (6.9) (5.5)

  • Page 131: Figure 6-34 R-134A Compressor Pressure And Motor Current Curves Versus Ambient Temperature

    (Bar) psig (.97) (.83) (.69) (.55) (.41) (.28) (.14) (- -.14) - -2 (- -.28) - -4 (- -.41) - -6 (15.6) (21.1) Compressor Suction Pressure Versus Ambient Air Temperature at Stable Box Temperature 35_F (1.7_C) Box (15.6) (21.1) Compressor--Motor Current Versus Ambient Air Temperature At Stable Box Temperature Figure 6-34.

  • Page 132: Electrical Wiring Schematic And Diagrams

    SECTION 7 ELECTRICAL WIRING SCHEMATIC AND DIAGRAMS INTRODUCTION PLEASE REFER TO FILE T--268 DIAGRAMS FOR SCHEMATICS AND DIAGRAMS T-268-07...

  • Page 133: Index

    Access Panel, 2-1 Air Makeup Vent Lower Fresh, 2-13 Upper Fresh, 2-13 Air--Cooled Condenser, 2-15, 2-17 Alarms Controller, 3-11 DataCORDER, 3-28 DataCORDER Configurations, 3-29 Ambient Sensor, 2-6, 2-7 Arctic, 4-12 Battery Pack, Controller/DataCORDER, 2-8, 2-9, 3-1 Bulb Expansion Valve, 2-14, 2-15, 2-16, 2-17, 5-4, 6-27 Mechanical Recording Thermometer, 2-3, 6-18 Mode, 3-9, 3-16, 3-17, 3-25, 4-12 Partlow, 6-18, 6-20...
  • Page 134 Cooling Relay, 4-4, 4-6, 4-8, 4-12 Current Sensor Module, 2-8, 2-9 Data Electrical, 2-11 Refrigeration System, 2-10 DataCORDER, 3-24 Access to Functions, 3-29 Alarms, 3-27 Communications, 3-31 Configuration, 3-25 Function Codes, 3-26 Pre--Trip Data Recording, 3-31 Scrollback, 3-32 Serial Number, 3-26 USDA Cold Treatment, 3-32 USDA Recording, 3-31 USDA/Message, 3-31...
  • Page 135 Heat Contactor, 2-8, 2-9, 3-15, 4-10, 4-12, 5-2 Heat Exchanger, 2-3, 2-15, 2-17, 5-3 Heat Relay, 3-15, 4-10, 4-12, 4-14, 4-15, 5-2 Heater, 2-1 Alarm, 3-12 Compressor Crankcase, 2-4, 2-11, 6-9 Configuration Variable, 3-3 Drain Pan, 2-11 Evaporator Coil, 2-11, 6-16 Heater Termination Thermostat, 2-3, 2-10, 3-23, 4-10, 4-12, 5-1, 5-2 Alarm, 3-12...
  • Page 136 Pad, Key, 2-8 Parts Identification Number (PID), 1-1, 1-2, 2-1 PID, (Parts Identification Number), 1-1, 1-2, 2-1 Plug, Fusible, 2-6, 2-15 Port Software Programming, 3-1, 6-28 Supply Air Thermometer, 2-6, 2-7 Power Autotransformer, 2-4, 2-12, 5-1, 5-4, 6-21 Pre--Trip Auto Test, 3-18 Current Limiting, 3-17 Inspection, 4-1 Manual Test, 3-18...
  • Page 137 Safety and Protective Devices, 2-19 Safety Summary General, Safety-1 Warning and Cautions, Safety-2 Sample, Standard Configuration Report, 3-34 Schematic, Electrical Wiring and Diagrams, 7-1 Schrader Valve, 2-6, 2-7 Sensor Ambient, 2-6, 2-7, 3-6, 3-12, 3-14, 3-30, 6-24 Bulb, 6-22 Chart, 6-32 Checking, 6-21, 6-24 Current, 2-8, 2-9 Defrost Termination, 2-3, 3-7, 3-9, 3-12, 3-16, 3-23,...
  • Page 138 Unit, Remote Monitoring, 2-8 Unit Operation, 4-2 Unit Serial Number, 2-1 Upper Fresh Air Makeup Vent, 2-13 USDA, 2-3, 3-31, 3-32 USDA Probe Receptacle, 2-3 T-268-07 Vacuum Pump, 6-5, 6-7 Connections, 6-7 Valve Bulb, Expansion, 2-14, 2-16, 5-4, 6-27 Discharge Pressure Regulator, 2-6, 2-7, 2-15, 2-17, Discharge Service, 2-4, 2-15, 2-17 Expansion, 2-3, 2-10, 2-15, 2-17, 5-3, 5-4, 6-26 Manual Liquid Line, 2-6, 2-7, 2-15, 2-17...

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69nt40-52169nt40-511-199

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