Carrier 69NT40-541-001 Operation And Service
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Carrier 69NT40-541-001 Operation And Service

Container refrigeration units
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Container Refrigeration
OPERATIONS AND SERVICE
For
69NT40-541-001 TO 199
Container Refrigeration Units
T-316 Rev D

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Summary of Contents for Carrier 69NT40-541-001

  • Page 1 Container Refrigeration OPERATIONS AND SERVICE 69NT40-541-001 TO 199 Container Refrigeration Units T-316 Rev D...
  • Page 3 OPERATIONS AND SERVICE 69NT40-541-001 TO 199 Container Refrigeration Units © 2017 Carrier Corporation Printed in USA July 2017 ●...
  • Page 5 TABLE OF CONTENTS PARAGRAPH NUMBER PAGE SAFETY SUMMARY ..............1–1 GENERAL SAFETY NOTICES .

  • Page 6: Table Of Contents

    3.1.1 Refrigeration Unit - Front Section ..........3–1 3.1.2 Fresh Air Makeup Vent .
  • Page 7 4.6.11 USDA Cold Treatment ........... . 4–15 4.6.12 USDA Cold Treatment Procedure .
  • Page 8 6.12 AUTOTRANSFORMER MALFUNCTION ......... . . 6–4 6.13 WATER-COOLED CONDENSER OR WATER PRESSURE SWITCH .
  • Page 9 7.18.3 Checking The Controller ..........7–28 7.18.4 Emergency Repair Procedures: .
  • Page 10 T-316...
  • Page 11 LIST OF ILLUSTRATIONS FIGURE NUMBER Page Figure 3.1 Refrigeration Unit - Front Section ..........3–1 Figure 3.2 Evaporator Section .
  • Page 12 Figure 7.22 Evaporator Fan Assembly ........... . . 7–25 Figure 7.23 Suction Modulation Valve (SMV) .
  • Page 13 LIST OF TABLES TABLE NUMBER Page Table 3–1 Safety and Protective Devices ........... . 3–9 Table 4–1 Key Pad Function .
  • Page 15 SECTION 1 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 mainte- nance 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 16 SPECIFIC WARNING AND CAUTION STATEMENTS The statements listed below are applicable to the refrigeration unit and appear elsewhere in this manual. These recommended precautions must be understood and applied during operation and maintenance of the equipment covered herein. WARNING Beware of unannounced starting of the evaporator and condenser fans. The unit may cycle the fans and compressor unexpectedly as control requirements dictate.
  • Page 17 WARNING Oakite No. 32 is an acid. Be sure that the acid is slowly added to the water. DO NOT PUT WATER INTO THE ACID - this will cause spattering and excessive heat. WARNING Wear rubber gloves and wash the solution from the skin immediately if accidental contact occurs.
  • Page 18 CAUTION When condenser water flow is below 11 lpm (3 gpm) or when water-cooled operation is not in use, the CFS switch MUST be set to position “1” or the unit will not operate properly. CAUTION When a failure occurs during automatic testing the unit will suspend operation awaiting opera- tor intervention.
  • Page 19 The set screw on the crankshaft must be removed for this type of oil pump. CAUTION Use only Carrier Transicold approved Polyol Ester Oil (POE) - Mobil ST32 compressor oil with R-134a. Buy in quantities of one quart or smaller. When using this hygroscopic oil, immediately reseal.
  • Page 21 18 and 24 volts, single phase. The controller is a Carrier Transicold Micro-Link 3 microprocessor. The controller will operate automatically to select cooling, holding or heating as required to maintain the desired set point temperature within very close limits.
  • Page 22 2.3.8 Remote Monitoring The unit may be fitted with a remote monitoring receptacle. This item allows connection of remote indicators for COOL, DEFROST and IN RANGE. Unless otherwise indicated, the receptacle is mounted at the control box location. 2.3.9 Communications The unit may be fitted with a communications interface module.
  • Page 23 2.3.22 Upper Air (Fresh Air Make Up) The unit may be fitted with an upper fresh air makeup assembly. The fresh air makeup assembly is available with a Vent Positioning Sensor (VPS) and may also be fitted with screens. 2.3.23 Lower Air (Fresh Air Make Up) The unit may be fitted with a lower fresh air makeup assembly.

  • Page 25: Refrigeration Unit - Front Section

    SECTION 3 DESCRIPTION GENERAL DESCRIPTION 3.1.1 Refrigeration Unit - Front Section The unit is designed so that the majority of the components are accessible from the front, see Figure 3.1. The upper access panels allow entry into the evaporator section, and the center access panel allows access to the ther- mostatic expansion valve and evaporator coil heaters.

  • Page 26: Evaporator Section

    3.1.3 Evaporator Section The evaporator section (Figure 3.2) contains the temperature recorder bulb or return recorder sensor, return tempera- ture sensor, thermostatic expansion valve, dual-speed evaporator fans (EM1 and EM2), evaporator coil and heater, drain pan heater, defrost heaters, defrost temperature sensor, heat termination thermostat, and heat exchanger. The evaporator fans circulate air through the container by pulling it in the top of the unit, directing it through the evaporator coil, where it is heated or cooled, and discharging it at the bottom.

  • Page 27: Compressor Section

    3.1.4 Compressor Section The compressor section (Figure 3.3) includes the compressor (with high pressure switch), power cable storage compartment, and autotransformer. This section also contains the suction modulating valve, discharge pressure regulator valve, and discharge/suction pressure transducers. The supply temperature sensor, supply recorder sensor and ambient sensor are located at the right side of the compressor.

  • Page 28: Air-Cooled Condenser Section

    3.1.5 Air-Cooled Condenser Section The air-cooled condenser section (Figure 3.4) consists of the condenser fan, condenser coil, receiver with sight glass/moisture indicator, quench valve, manual liquid line valve, and filter-drier. The condenser fan pulls air in the bottom of the coil and it is discharged horizontally out through the condenser fan grille. Figure 3.4 Air-Cooled Condenser Section 1.

  • Page 29: Water-Cooled Condenser Section

    3.1.6 Water-Cooled Condenser Section The water-cooled condenser section (Figure 3.5) consists of a water-cooled condenser, sight glass, quench expansion valve, rupture disc, condenser pressure transducer, filter-drier, water couplings, and water pressure switch. The water-cooled condenser replaces the standard unit receiver. Figure 3.5 Water-Cooled Condenser Section 1.

  • Page 30: Control Box Section

    3.1.7 Control Box Section The control box (Figure 3.6) includes the manual operation switches, circuit breaker (CB-1), compressor, fan and heater contactors, control power transformer, fuses, key pad, display module, current sensor module, controller module, and the communications interface module. 3.1.8 Communications Interface Module The communications interface module is a slave module which allow communication with a master central monitor-...

  • Page 31: Refrigeration System Data

    REFRIGERATION SYSTEM DATA a. Compressor/Motor Number of Cylinders Assembly Model 06DR Weight (Dry) 118 kg (260 lb) Approved Oil Castrol Icematic SW-20 Oil Charge 3.6 liters (7.6 U.S. pints) Oil Sight Glass The oil level range, with the compressor off, should be between the bottom and one-eighth level of the sight glass.

  • Page 32: Electrical Data

    ELECTRICAL DATA CB-1 Trips at 29 amps a. Circuit Breaker CB-2 (50 amp) Trips at 62.5 amps CB-2 (70 amp) Trips at 87.5 amps b. Compressor 17.6 amps @ 460 vac Full Load Amps (FLA) Motor (with current limiting set at 21 amps) 380 vac, Single Phase, 460 vac, Single Phase, 50 hz...

  • Page 33: Safety And Protective Devices

    ELECTRICAL DATA (CONTINUED) Control Circuit 7.5 amps (F3A, F3B) Controller/DataCORDER 5 amps (F1 & F2) Emergency Defrost 5 amps (FED) g. Fuses Drain Line Heater 5 amps (FDH) Humidity Power 5 amps (FH) Transformer h. Compressor Crankcase Heater 180 watts @ 460 vac Orange wire Power Red wire...

  • Page 34: Refrigeration Circuit

    Table 3–1 Safety and Protective Devices UNSAFE CONDITION SAFETY DEVICE DEVICE SETTING Excessive evaporator fan motor(s) winding Internal Protector(s) (IP-EM) - Automatic Reset temperature Abnormal pressures/ 99°C = (210°F) Fusible Plug - Used on the Receiver temperatures in the high Rupture Disc - Used on the Water-Cooled Condenser refrigerant side 35 kg/cm...

  • Page 35: Figure 3.7 Refrigeration Circuit Schematic

    Figure 3.7 Refrigeration Circuit Schematic EVAPORATOR TXV BULB CONDENSER HEAT EXCHANGER PRESSURE REGULATOR PRESSURE TRANSDUCER SERVICE VALVE PRESSURE MODULATING QUENCH TRANSDUCER VALVE VALVE FUSIBLE PLUG FILTER DRIER Suction SIGHT GLASS Liquid SERVICE VALVE Discharge RECEIVER Circuit with Receiver EVAPORATOR TXV BULB CONDENSER HEAT EXCHANGER FUSIBLE...

  • Page 37: Microprocessor

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

  • Page 38: Key Pad

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

  • Page 39: Display Module

    LED will flash if dehumidification or humidification is enabled. 7. Alarm - Red LED: Energized when there is an active or an inactive shutdown alarm in the alarm queue. Figure 4.4 Micro-Link 3 Controller EN12830 CONTROLLER With CARRIER Micro-Link3 S/N: 0491162 REV 5147 YYWW: 1035 12-00579-00...

  • Page 40: Controller

    4.1.3 Controller CAUTION Do not remove wire harnesses from controller unless you are grounded to the unit frame with a static safe wrist strap. CAUTION Unplug all controller wire harness connectors before performing arc welding on any part of the container.

  • Page 41: Modes Of Operation

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

  • Page 42: Condenser Pressure Control

    4.3.6 Condenser Pressure Control When configuration variable CnF14 is set to “In” the condenser pressure control logic is activated to maintain dis- charge pressures above 130 psig in low temperature ambients. The logic turns the condenser fan on or off in accordance with the condenser pressure transducer reading.

  • Page 43: Perishable Mode - Dehumidification

    4.3.10 Perishable Mode - Dehumidification The dehumidification mode is provided to reduce the humidity levels inside the container. The mode is activated when a humidity value is set at function code Cd33. The display module SUPPLY led will flash ON and OFF every second to indicate that the dehumidification mode is active.

  • Page 44: Temperature Control - Frozen Mode

    When bulb mode is disabled by any of the above, the evaporator fan operation for dehumidification reverts to “alt” and the DTS termination setting resets to the value determined by controller configuration variable CnF41. 4.3.12 Temperature Control - Frozen Mode With configuration variable CnF26 set to -10°C the frozen mode of operation is active with set points at or below - 10°C (+14°F).

  • Page 45: Unit Pre-Trip Diagnostics

    When an Alarm Occurs: a. The red alarm light will illuminate for “20 series” alarms. b. If a detectable problem is found to exist, its alarm code will be alternately displayed with the set point on the left display. c. The user should scroll through the alarm list to deter mine what alarms exist or have existed. Alarms must be diagnosed and corrected before the Alarm List can be cleared.

  • Page 46: Datacorder

    Figure 4.1) which may be used with the Carrier Transicold Data Reader to down load data. A personal computer with Carrier Transicold Data View software may also be used to download data and configure settings. The DataCORDER consists of: •...

  • Page 47: Datacorder Software

    4.6.2 DataCORDER Software The DataCORDER Software is subdivided into the Configuration Software, Operational Software and the Data Memory. a. Operational Software The Operational Software reads and interprets inputs for use by the Configuration Software. The inputs are labeled Function Codes. There are 35 functions (see Table 4–8) which the operator may access to examine the current input data or stored data.

  • Page 48: Table 4-3 Datacorder Standard Configurations

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

  • Page 49: Figure 4.5 Standard Configuration Report

    Figure 4.5 Standard Configuration Report Raw Data Report for ABC1234567 May 31, 2003 to Jun 04, 2003 System Configuration at the Time of Interrogation: Interrogated On Sept 05, 2003 Extracted by DataLine Rev 1.0.0 Controller Software: 5120 Controller Serial #: 04163552 Bill of Lading #: 1 Origin: Origin Date:...

  • Page 50: Logging Interval (Dcf03)

    4.6.4 Logging Interval (dCF03) The user may configure four time intervals between data recordings. Data is logged at exact intervals in accor- dance with the real time clock. The clock is factory set at Greenwich Mean Time. 4.6.5 Thermistor Format (dCF04) The user may configure the format in which the thermistor readings are recorded.

  • Page 51: Datacorder Communications

    2. PC communication port(s) unavailable or mis-assigned. 3. Chart Recorder Fuse (FCR) blown a. DataReader The Carrier Transicold Data Reader (see Figure 4.6) is a simple to operate hand held device designed to extract data from the DataCORDER and then upload it to a personal computer. The Data Reader has the ability to store multiple data files.

  • Page 52: Usda Cold Treatment Procedure

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

  • Page 53: Datacorder Alarms

    4.6.13 DataCORDER Alarms 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 signals back 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 4–...
  • Page 54 Table 4–4 Controller Configuration Variables (Continued) CONFIG. # TITLE DEFAULT OPTION CnF18 Heater Old (Low Watt) nEW (High Watt) CnF19 Controlled Atmosphere Out (No) In (Yes) CnF20 Suction Pressure Sensor Out (No) In (Yes) CnF21 Autotransformer CnF22 Economy Mode Option Std, Full CnF23 Defrost Interval Timer Save Option...

  • Page 55: Table 4-5 Controller Function Codes

    Table 4–5 Controller Function Codes CODE # TITLE DESCRIPTION NOTE If the function is not applicable, the display will read “-----” Display Only Functions Displays the SMV percent open. The right display reads 100% when the valve Suction Modulation Cd01 is fully open and 0% when the valve is fully closed.
  • Page 56 Table 4–5 Controller Function Codes (Continued) CODE # TITLE DESCRIPTION Humidity Water This code displays the status of the humidity water pump (-----, forward, re verse Cd21 Pump/Atomizer or off). If not configured, the mode is permanently deactivated and will dis play Status “-----.”...
  • Page 57 Table 4–5 Controller Function Codes (Continued) CODE # TITLE DESCRIPTION The in-range tolerance will determine the band of temperatures around the set point which will be designated as in-range. If the control temperature is in-range, the in-range light will be illuminated. There are four possible values: 1 = ±0.5°C (±0.9°F) Cd30 In-Range Tolerance...
  • Page 58 Table 4–5 Controller Function Codes (Continued) CODE # TITLE DESCRIPTION This code, as with function code Cd36, is used in conjunction with bulb mode Defrost Termination and dehumidification. If bulb mode is active, this code allows the user to change Cd37 Temperature Setting the defrost termination thermostat settings.

  • Page 59: Table 4-6 Controller Alarm Indications

    Table 4–6 Controller Alarm Indications CODE # TITLE DESCRIPTION Alarm 11 is applicable to units with Single Evaporator Fan Capability (CnF32 set to 1EFO) only. The alarm is triggered if the evaporator fan AL11 Evaporator Motor 1 IP Trip motor #1 internal protector opens. If the alarm is active, probe check is deactivated.
  • Page 60 Table 4–6 Controller Alarm Indications (Continued) CODE # TITLE DESCRIPTION During start-up diagnostics, the EEPROM is examined to determine va- lidity of its contents. This is done by testing the set point and the alarm list. If the contents are invalid, Alarm 51 is activated. During control pro- cessing, any operation involving alarm list activity that results in an error AL51 Alarm List Failure...
  • Page 61 Table 4–6 Controller Alarm Indications (Continued) CODE # TITLE DESCRIPTION Alarm 60 is an indication of a probable failure of the defrost temperature sensor (DTS). It is triggered by the opening of the heat termination ther- mostat (HTT) or the failure of the DTS to go above set point within two hours of defrost initiation.
  • Page 62 Table 4–6 Controller Alarm Indications (Continued) CODE # TITLE DESCRIPTION The Controller performs self-check routines. if an internal failure occurs, an “ERR”alarm will appear on the display. This is an indication the Con- Internal troller needs to be replaced. Microprocessor ERROR DESCRIPTION Failure...

  • Page 63: Table 4-7 Controller Pre-Trip Test Codes

    Table 4–7 Controller Pre-Trip Test Codes CODE # TITLE DESCRIPTION NOTE “Auto” or “Auto1” menu includes the: P, P1, P2, P3, P4, P5, P6 and rSLts. “Auto2” menu includes P, P1, P2, P3, P4, P5, P6, P7, P8, P9, P10 and rSLts.”Auto3 menu includes P, P1, P2, P3, P4, P5, P6, P7, P8 and rSLts All lights and display segments will be energized for five seconds at the start Pre-Trip Initiated...
  • Page 64 Table 4–7 Controller Pre-Trip Test Codes (Continued) CODE # TITLE DESCRIPTION Setup: The High Speed Evaporator Fan is turned on and run for eight minutes, with all other outputs de-energized. Pass/Fail Criteria: A temperature comparison is made between the re- P5-0 Supply/Return Probe Test turn and supply probes.
  • Page 65 Table 4–7 Controller Pre-Trip Test Codes (Continued) CODE # TITLE DESCRIPTION P6-5 Not Applicable Not Used NOTE P7-0 & P8 are included with the “Auto2 & Auto 3" only. P9-0 through P10 are included with “Auto2” only Setup: When the unit is running, the condenser fan is de-energized, and a 15 minute timer is started.
  • Page 66 Table 4–7 Controller Pre-Trip Test Codes (Continued) CODE # TITLE DESCRIPTION Setup: If the container temperature is below 15.6°C (60°F), the set point is changed to 15.6°C, and a 60 minute timer is started. The left display will read “P8-0.” The control will then heat the container until 15.6°C is reached.
  • Page 67 Table 4–7 Controller Pre-Trip Test Codes (Continued) CODE # TITLE DESCRIPTION Setup: When the container temperature is greater than or equal to the 7.2°C (45°F) set point which was set in the frozen mode heat test, the left display will read “P10-1” and the right display will show the return air tem- perature.

  • Page 68: Table 4-8 Datacorder Function Code Assignments

    Table 4–8 DataCORDER Function Code Assignments CODE # TITLE DESCRIPTION NOTE Inapplicable Functions Display “-----” To Access: Press ALT. MODE key Recorder Supply Current reading of the supply recorder sensor. Temperature Recorder Return Current reading of the return recorder sensor. Temperature USDA 1,2,3 dC3-5...

  • Page 69: Table 4-9 Datacorder Pre-Trip Result Records

    Table 4–9 DataCORDER Pre-Trip Result Records TEST # TITLE DATA Heater On Pass/Fail/Skip Result, Change in current for Phase A, B, and C Heater Off Pass/Fail/Skip Result, Change in currents for Phase A, B, and C Pass/Fail/Skip Result, Water pressure switch (WPS) - Open/Closed, Condenser Fan On Change in currents for Phase A, B, and C Condenser Fan Off...

  • Page 70: Table 4-10 Datacorder Alarm Indications

    Table 4–10 DataCORDER Alarm Indications To Access: Press ALT. MODE key CODE # 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 a fault Recorder Supply with this sensor.

  • Page 71: Operation

    SECTION 5 OPERATION INSPECTION (BEFORE STARTING) WARNING Beware of unannounced starting of the evaporator and condenser fans. The unit may cycle the fans and compressor unexpectedly as control requirements dictate. a. If container is empty, check inside for the following: 1.

  • Page 72: Adjust Fresh Air Makeup Vent

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

  • Page 73: Lower Fresh Air Makeup Vent

    Figure 5.2 Make Up Air Flow Chart 69NT40 FRESH AIR MAKEUP ZERO EXTERNAL STATIC 50HZ FLOW T-BAR (CMH) 1/2” T-BAR 5/8” T-BAR 3” 0 10 20 30 40 50 60 70 80 90 100 PERCENT OPEN For 60Hz operation multiply curves by 1.2 5.3.2 Lower Fresh Air Makeup Vent a.

  • Page 74: Fresh Air Position Sensor

    5.3.3 Fresh Air Position Sensor The VPS allows the user to determine position of the fresh air vent via function code 45. This function code is accessible via the code select key. The vent position will display for 30 seconds whenever motion corresponding to 5 CMH (3 CFM) or greater is detected.

  • Page 75: Connect Remote Monitoring Receptacle

    CONNECT REMOTE MONITORING RECEPTACLE If remote monitoring is required, connect remote monitor plug at unit receptacle (See item9, Figure 3.6). When the remote monitor plug is connected to the remote monitoring receptacle, the following remote circuits are energized: CIRCUIT FUNCTION Sockets B to A Energizes remote cool light Sockets C to A...

  • Page 76: Complete Inspection

    DataCORDER a. Check and, if required, set the DataCORDER Configuration in accordance with desired recording parame- ter. Refer to Section 4.6.3. b. Enter a “Trip Start”. To enter a “trip Start”, do the fol lowing: 1. Depress the ALT MODE key and scroll to Code dC30. 2.
  • Page 77 3. Pre-trip diagnosis may also be initiated via communications. The operation is the same as for the keypad initiation described below 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 78: Observe Unit Operation

    OBSERVE UNIT OPERATION 5.9.1 Crankcase Heater When the crankcase heater is installed, it will be operational whenever the compressor is off and there is power to the unit. The heater is connected to a set of normally closed auxiliary contacts on the compressor contactor. 5.9.2 Probe Check If the DataCORDER is off, or in alarm mode the controller will revert to a four probe configuration which includes...

  • Page 79: Figure 5.3 Controller Operation - Perishable Mode

    Figure 5.3 Controller Operation - Perishable Mode Figure 5.4 Controller Operation - Frozen Mode 5–9 T-316...

  • Page 80: Sequence Of Operation - Perishable Mode Cooling

    Figure 5.5 Perishable Mode Cooling ENERGIZED DE- - ENERGIZED CONTROL TRANSFORMER FOR FULL DIAGRAM AND LEGEND, SEE SECTION 7 POWER TO CONTROLLER SIGNAL TO CONTROLLER SIGNAL TO CONTROLLER NOTE: HIGH SPEED EVAPORATOR FAN SHOWN. FOR LOW SPEED CONTACT TE IS DE-ENERGIZED AND CONTACT TV IS ENERGIZED 5.10.1 Sequence of Operation - Perishable Mode Cooling NOTE...

  • Page 81: Sequence Of Operation - Perishable Mode Heating

    5.10.2 Sequence of Operation - Perishable Mode Heating NOTE The unit will heat only when in the Perishable Mode, relay TH is electronically locked out when in the Frozen Mode. a. If the air temperature decreases 0.5°C (0.9°F) below set point, the system enters the heating mode. (See Figure 5.3).

  • Page 82: Sequence Of Operation - Defrost

    Figure 5.7 Frozen Mode ENERGIZED DE-ENERGIZED CONTROL TRANSFORMER FOR FULL DIAGRAM AND LEGEND, SEE SECTION 7 POWER TO CONTROLLER SIGNAL TO CONTROLLER SIGNAL TO CONTROLLER c. Contacts TC and TN are opened to de-energize the compressor and condenser fan motors when the return air temperature decreases to 0.2°C (0.4°F) be low set point.

  • Page 83: Figure 5.8 Defrost

    Figure 5.8 Defrost ENERGIZED DE-ENERGIZED CONTROL TRANSFORMER FOR FULL DIAGRAM AND LEGEND, SEE SECTION 7 POWER TO CONTROLLER SIGNAL TO CONTROLLER SIGNAL TO SIGNAL TO CONTROLLER CONTROLLER Processing of a defrost request is controlled by the Defrost Termination Thermostat. The Defrost Termination Thermostat is not a physical component.

  • Page 84: 5.11 Emergency Operation

    5.11 EMERGENCY OPERATION Operation by the refrigeration controller may be overridden by use of the EMERGENCY BYPASS or by use of the EMERGENCY DEFROST switch. The EMERGENCY BYPASS switch functions to bypass the controller in the event of controller failure, The EMERGENCY DEFROST switch functions to bypass the controller and place the unit in the defrost mode.

  • Page 85: Troubleshooting

    SECTION 6 TROUBLESHOOTING REMEDY / CONDITION POSSIBLE CAUSE REFERENCE UNIT WILL NOT START OR STARTS THEN STOPS External power source OFF Turn on Start-Stop switch OFF or defective Check No power to unit Circuit breaker tripped or OFF Check Autotransformer not connected 5.2.2 Circuit breaker OFF or defective Check...

  • Page 86: Unit Runs But Has Insufficient Cooling

    REMEDY / CONDITION POSSIBLE CAUSE REFERENCE UNIT RUNS BUT HAS INSUFFICIENT COOLING Compressor Compressor valves defective Abnormal pressures Controller malfunction Evaporator fan or motor defective 7.16 Refrigeration System Suction modulation valve malfunction 7.18 Condenser Pressure Transducer defective Check Shortage of refrigerant 7.7.1 UNIT WILL NOT HEAT OR HAS INSUFFICIENT HEATING Start-Stop switch OFF or defective...

  • Page 87: Abnormal Pressures (Cooling)

    REMEDY / CONDITION POSSIBLE CAUSE REFERENCE Heater contactor or coil defective Replace Initiates but does not defrost Heater(s) burned out 7.15 Frequent defrost Wet load Normal ABNORMAL PRESSURES (COOLING) Condenser coil dirty 7.10 Condenser fan rotating backwards 7.11 Condenser fan inoperative 7.11 High discharge Refrigerant overcharge or noncondensibles...

  • Page 88: 6.10 No Evaporator Air Flow Or Restricted Air Flow

    REMEDY / CONDITION POSSIBLE CAUSE REFERENCE 6.10 NO EVAPORATOR AIR FLOW OR RESTRICTED AIR FLOW Frost on coil Evaporator coil blocked Dirty coil 7.15 Evaporator fan motor internal protector open 7.16 Evaporator fan motor(s) defective 7.16 No or partial evaporator air flow Evaporator fan(s) loose or defective 7.16 Evaporator fan contactor defective...

  • Page 89: Service

    SECTION 7 SERVICE NOTE 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. WARNING Never use air for leak testing.

  • Page 90: Manifold Gauge Set

    A R-134a manifold gauge/hose set with self-sealing hoses (see Figure 7.3) is required for service of the models covered within this manual. The manifold gauge/hose set is available from Carrier Transicold. (Carrier Transicold P/N 07-00294-00, which includes items 1 through 6, Figure 7.3.) To perform service using the manifold gage/hose...

  • Page 91: Figure 7.3 R-134A Manifold Gauge/Hose Set

    Figure 7.3 R-134a Manifold Gauge/Hose Set To Low Side To High Side Service Port Service Port Blue - Red - Yellow Blue Knob Red Knob 1. Manifold Gauge Set 4. Hose Fitting with O-ring (M14 x 1.5) 2. Hose Fitting (0.5-16 Acme) 5.

  • Page 92: Pumping The Unit Down

    Figure 7.4 Refrigeration System Service Connections BLUE YELLOW 1. Discharge Service Valve 8. Center Hose 2. Compressor 9. High Side Hose 3. Suction Service Valve 10. Electronic Vacuum Gauge 4. Receiver or Water Cooled Condenser 11. Manifold Gauge Set 5. Liquid Service Valve 12.

  • Page 93: Refrigerant Leak Checking

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

  • Page 94: Procedure - Complete System

    7.6.3 Procedure - Complete System a. Remove all refrigerant using a refrigerant recovery system. b. The recommended method to evacuate and dehydrate the system is to connect three evacuation hoses (see Section 7.5) to the vacuum pump and refrigeration unit. Be sure the service hoses are suited for evac- uation purposes.

  • Page 95: Procedure - Partial System

    Remove the copper tubing and change the filter-drier. Evacuate unit to 500 microns. Close the electronic vacuum gauge and vacuum pump valves. Shut off the vacuum pump. Wait five minutes to see if vacuum holds. This procedure checks for residual moisture and/or leaks. With a vacuum still in the unit, the refrigerant charge may be drawn into the system from a refrigerant con- tainer on weight scales.

  • Page 96: Adding Refrigerant To System (Partial Charge)

    7.7.3 Adding Refrigerant to System (Partial Charge) a. Examine the unit refrigerant system for any evidence of leaks. Repair as necessary. (Refer to Section 7.5.) b. Maintain the conditions outlined in Section 7.7.1. c. Fully backseat the suction service valve and remove the service port cap. d.

  • Page 97: Figure 7.6 Compressor

    Figure 7.6 Compressor 1. Discharge Flange 9. Sight Glass 2. High Side Pressure Connection 10. Oil Drain Plug 3. Low Side Pressure Connection 11. Bearing Head 4. Suction Flange 12. Oil Pump 5. Motor End Cover 13. Oil Fill Plug 6.

  • Page 98: Compressor Disassembly

    7.8.2 Compressor Disassembly WARNING Before disassembly of any external compressor component make sure to relieve possible internal pressure by loosening the bolts and tapping the component with a soft hammer to break the seal. CAUTION Removing the compressor motor press-fit stator in the field is not recommended. The rotor and stator are a matched pair and should not be separated.

  • Page 99: Figure 7.8 Bottom Plate Removed

    Figure 7.8 Bottom Plate Removed 1. Oil Pressure Relief Valve 4. Capscrew 2. Oil Return Check Valve 5. Connecting Rod and Cap Assembly 3. Oil Suction Tube - - - - - b. Loosen cylinder head capscrews. If the cylinder head is stuck, tap the center of the cylinder head with a wooden or lead mallet.

  • Page 100: Figure 7.9 Oil Pump And Bearing Head

    Figure 7.9 Oil Pump and Bearing Head Set screw must be removed. 1. Oil Pump & Bearing Head 4. Oil Inlet Port 2. Thrust Washer 5. Oil Pump Inlet 3. Oil Pickup Tube - - - - - NOTE If the oil pump was not operating properly, the entire oil pump & bearing head assembly must be replaced.

  • Page 101: Figure 7.11 Motor End Cover

    h. Be very careful not to damage the motor windings when removing the motor end cover (see Figure 7.11), as the cover fits over the winding coils. Loosen the cap screws, break the seal and then remove all cap- screws except one in the top of the cover. While holding the cover in place, remove the remaining capscrew. Do not allow the cover to drop from its own weight.

  • Page 102: Compressor Reassembly

    Figure 7.13 Crankshaft Assembly 1. Capscrew 6. Connecting Rod 2. Cap 7. Compression Ring 3. Crankshaft 8. Piston 4. Thrust Washer 9. Pin 5. Rotor Drive Key 10. Retainer - - - - - 7.8.3 Compressor Reassembly Clean all compressor parts, use a suitable solvent with proper precautions. Coat all moving parts with the proper compressor oil before assembly.

  • Page 103: Installing The Components

    Suction valves are positioned by dowel pins (see Figure 7.14). Do not omit the suction valve positioning springs. Place the springs so that the ends bear against the cylinder deck (middle bowed away from cylinder deck). Use new gaskets when reinstalling valve plates and cylinder heads. b.

  • Page 104: Compressor Oil Level

    Compressor Oil Level CAUTION Use only Carrier Transicold approved Polyol Ester Oil (POE) - Castrol-Icematic SW20 compres- sor oil with R-134a. Buy in quantities of one quart or smaller. When using this hygroscopic oil, immediately reseal. Do not leave container of oil open or contamination will occur.

  • Page 105: High Pressure Switch

    HIGH PRESSURE SWITCH 7.9.1 Replacing High Pressure Switch a. Turn unit start-stop switch OFF. Remove the refrigerant from the system. b. Disconnect wiring from defective switch. The high pressure switch is located on the center head and is removed by turning counterclockwise. (See Figure 3.3) c.

  • Page 106: 7.11 Condenser Fan And Motor Assembly

    a. Using a refrigerant reclaim system, remove the refrigerant charge. b. Remove the condenser coil guard. c. Unsolder discharge line and remove the line to the receiver or water-cooled condenser. d. Remove coil mounting hardware and remove the coil. e. Install replacement coil and solder connections. Leak-check the coil connections per Section 7.5.
  • Page 107 If the water-cooled condenser is dirty, it may be cleaned and de-scaled by the following procedure: a. Turn unit off and disconnect main power. b. Disconnect water pressure switch tubing by loosening the two flare nuts. Install one-quarter inch flare cap on water-cooled condenser inlet tube (replaces tubing flare nut).

  • Page 108: Figure 7.17 Water-Cooled Condenser Cleaning - Forced Circulation

    Figure 7.17 Water-Cooled Condenser Cleaning - Forced Circulation Centrifugal pump Vent 30 GPM at 35’ head Close vent pipe Globe valve when pump valves is running. Priming connection Pump Suction Condenser Tank Remove water regulating valve Return Pump Fine mesh support screen 5.

  • Page 109: 7.13 Filter-Drier

    8. Following the water flush, circulate a 56.7 gram (2 ounce) per 3.785 liter (1 U.S. gallon) solution of Oakite No. 22 thru the tubes to neutralize. Drain this solution. 9. Flush the tubes thoroughly with fresh water. 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.

  • Page 110: Checking Superheat

    7.14.1 Checking Superheat. NOTE Proper superheat measurement should be completed at -18°C (0°F) container box temperature where possible. a. Open the heater access panel (see Figure 3.1) to expose the expansion valve. b. Attach a temperature sensor near the expansion valve bulb and insulate. Make sure the suction line is clean and that firm contact is made with the sensor.

  • Page 111: 7.15 Evaporator Coil And Heater Assembly

    Figure 7.21 Hermetic Thermostatic Expansion Valve Brazing Procedure Braze Rod (’Sil-Phos” = 5.5% Silver, 6% Phosphorus) Copper Tube (Apply heat for 10-15 seconds) Use of a wet cloth is not necessary due to rapid Bi-metallic Tube Connection (Apply heat for 2-5 seconds) heat dissipation of the bi-metallic connections 1.

  • Page 112: Evaporator Heater Replacement

    e. Remove middle coil support. f. Remove the mounting hardware from the coil. g. Unsolder the two coil connections, one at the distributor and the other at the coil header. h. After defective coil is removed from unit, remove defrost heaters and install on replacement coil. Install coil assembly by reversing above steps.

  • Page 113: Assemble The Evaporator Fan Assembly

    Figure 7.22 Evaporator Fan Assembly 1. Stator 6. Impeller Fan 2. Flat washer, 1/4 7. Key 3. Bolt, 1/4-20 x 3/4 8. Mylar Protector 4. Locknut, 5/8-18 9. Evaporator Motor 5. Flat washer, 5/8 - - - - - 7.16.3 Assemble The Evaporator Fan Assembly a.

  • Page 114: Removing The Capacitor

    NOTE The evaporator fan motors will always start in high speed. b. Motor running in wrong direction (after checking for correct wiring application). c. Motor will not start, and IP-Em's are not open. 7.17.2 Removing The Capacitor WARNING Make sure power to the unit is OFF and power plug disconnected before removing capacitor(s).

  • Page 115: Precheck Procedure

    7.18.1 Precheck Procedure a. Check unit for abnormal operation. b. Check charge. If refrigerant is low repair as required and again check operation. c. If sufficient capacity cannot be maintained or unit is tripping excessively on high pressure switch (HPS) in high ambients, check coils and clean if required.
  • Page 116 Checking with SMA-12 portable stepper drive tester The SMA-12 portable stepper drive tester (Carrier Transicold P/N 07-00375-00) is a battery operated stepper drive which will open and close the SMV, which allows a more thorough check of the motor.

  • Page 117: Figure 7.24 Controller Section Of The Control Box

    4. Test Points - - - - - a. Obtain a grounding wrist strap (Carrier Transicold part number 07-00-304-00) and a static dissipation mat (Carrier Transicold part number 07-00304-00). The wrist strap, when properly grounded, will dissipate any potential buildup on the body. The dissipation mat will provide a static-free work surface on which to place and/or service the controller.
  • Page 118 b. Disconnect and secure power to the unit. c. Place strap on wrist and attach the ground end to any exposed unpainted metal area on the refrigeration unit frame (bolts, screws, etc.). d. Carefully remove the Controller. Do not touch any of the electrical connections if possible. Place the module on the static mat.
  • Page 119 9. 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 Dis play will blink the message "Pro FAIL" or "bad 12V". Turn start-stop switch OFF and remove the card.) 10.

  • Page 120: Table 7-1 Sensor Temperature/Resistance Chart

    b. Installation: Install the module by reversing the removal steps. Torque values for mounting screws (item 2, see Figure 7.24) are 0.23 mkg (20 inch-pounds). Torque value for the connectors is 0.12 mkg (10 inch-pounds). 7.20.5 Battery Replacement If required, use tool 07-00418-00. 7.21 TEMPERATURE SENSOR SERVICE Procedures for service of the Return Recorder, Return Temperature, Supply Recorder, Supply Temperature, Ambi- ent, Defrost Temperature, Compressor Discharge and Compressor Suction temperature sensors are provided in...

  • Page 121: Figure 7.25 Sensor Types

    Figure 7.25 Sensor Types Sensor 40mm (1- -1/2 inch) Mounting Stud Type 6.3mm (1/4- -inch) 40 mm (1-1/2 inches) 6.3- -mm (1/4- -inch) Bulb Type Sensor d. Prepare the cables by cutting wires to the opposite of the sensor. (See Figure 7.26.) When installing a single wire color two wire sensor, cut one wire of existing two wire cable 40 mm (1-1/2...

  • Page 122: Figure 7.26 Sensor And Cable Splice

    Figure 7.26 Sensor and Cable Splice REPLACEMENT 2- -WIRE TO 2- -WIRE OR 3- -WIRE TO 3- -WIRE Cable Sensor REPLACEMENT FOR DUAL, SINGLE SENSOR CONFIGURATION Cables BLACK Sensor Heat Shrink Tubing Large Heat Shrink Tubing RED/WHITE 7.21.3 Sensor Re-Installation a.
  • Page 123 7.22 VENT POSITION SENSOR (VPS) The vent position sensor (VPS) determines the position of the fresh air vent in near real time via the function code 45. The fresh air vent position sensor alarm (AL50) will occur if the sensor reading is not stable for 5 minutes or if the sensor is outside of its valid range (shorted or open).
  • Page 124 7.23 ELECTRONIC PARTLOW TEMPERATURE RECORDER The microprocessor based temperature recorder is designed to interface with the DataCORDER to log tempera- ture with time. The electronic recorder will automatically record the return air, supply air, or both, based on the set- ting of temperature controller configuration code CnF37, refer toTable 4–4.

  • Page 125: Figure 7.29 Electronic Partlow Temperature Recorder

    Figure 7.29 Electronic Partlow Temperature Recorder 1. Recorder Door 6. Connector 2. Change Chart Button 7. Calibration Button (located underneath) 3. Recorder Box 8. Mounting Screw #10-24 x 7/16 Inches Long 4. Pen Tip 9. Hold Down Tab 5. Stylus Arm 10.
  • Page 126 e. Mark today's date, container number, and other required information on the new chart and install under hold down tabs. f. Replace the chart nut loosely, rotate the chart until the correct day is aligned with the “start arrow,” and hand tighten the chart nut.
  • Page 127 The threaded brass inserts that are molded into the control box will need to be replaced if the threads become stripped, or if the insert becomes loose. The inserts and epoxy are contained in repair kit, Carrier Transicold part number 76-50084-00 (see Table 7–3).

  • Page 128: Figure 7.30 Door Hinge Repair

    The damaged insert must be removed from the control box. Table 7–4 identifies the drill size and drill depth to be used for each insert. A stop ring should be used on the drill bit to limit the depth. a. Center the drill bit on the insert and drill to the prescribed depth. b.

  • Page 129: Table 7-2 Crack, Chip & Hole Repair Kit

    Static Mixing Tube (Loctite 983440) 07-00390-00 Instruction Sheet 98-02338-00 NOTE Insert repair procedures require use of an Application Gun, Carrier part number 07-00391-00 (Loctite 983435) Table 7–4 Drill Information ITEM INSERT PART NUMBER DRILL SIZE AND DEPTH 34- 06231- 01 10.3 mm x 17.8 mm deep (.404 in.

  • Page 130: Figure 7.31 Insert Location

    Figure 7.31 Insert Location INSERT PART NUMBERS 34-06231-## WHERE THE ## IS AS INDICATED T-316 7–42...

  • Page 131: Figure 7.32 Communications Interface Installation

    7.26 COMMUNICATIONS INTERFACE MODULE INSTALLATION Figure 7.32 Communications Interface Installation Communications interface Module Units with communication interface module provision have the required wiring installed. The provision wiring kit (part number 76-00685-00), includes three pre-addressed wires installed between the circuit breaker and commu- nication interface module locations.
  • Page 132 b. Removing the capacitor WARNING Make sure power to the unit is OFF and power plug disconnected before removing capacitor(s). WARNING Before removing the capacitors the terminals must be checked for voltage with a multimeter. The discharge resistors installed on the unit (capacitors) should bring the voltage to a safe level in a minute.

  • Page 133: Table 7-5 Recommended Bolt Torque Values (Dry, Non-Lubricated For 18-8 Stainless Steel)

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

  • Page 134: Table 7-7 Compressor Torque Values

    Table 7–6 Wear Limits For Compressors (Continued) CYLINDERS Bore 2.0010 50.8254 .0020 0.0508 Piston (Diameter) 1.9860 50.4444 .0020 0.0508 Piston Pin (Diameter) 0.6873 17.4574 .0010 0.0254 Piston Ring Gap 0.013 00.3302 0.0050 00.1270 .0250 0.6350 Piston Ring Side Clearance 0.002 00.0508 0.0010 00.0254...

  • Page 135: Table 7-8 R-134A Temperature - Pressure Chart

    Table 7–8 R-134a Temperature - Pressure Chart Temperature Vacuum Temperature Pressure °F °C “/hg cm/hg kg/cm °F °C psig kg/cm 14.6 49.4 37.08 0.49 24.5 168.9 1.72 1.69 12.3 41.6 31.25 0.42 26.1 180.0 1.84 1.80 32.8 24.64 0.33 27.8 191.7 1.95 1.92...

  • Page 136: Figure 7.33 R-134A Compressor Pressure And Motor Current Curves Vs Ambient Temp (1 Of 2)

    Figure 7.33 R-134a Compressor Pressure and Motor Current Curves vs Ambient Temp (1 of 2) Note: Curves to be used as troubleshooting guide only for model series 69NT40 with fresh air makeup vent closed, unit powered on 460 VAC/60hz and SMV 100% open. (Bar) psig (22.0)

  • Page 137: Figure 7.34 R-134A Compressor Pressure And Motor Current Curves Vs Ambient Temp (2 Of 2)

    Figure 7.34 R-134a Compressor Pressure and Motor Current Curves vs Ambient Temp (2 of 2) (Bar) psig (.97) (.83) (.69) (.55) 35 F (1.7 C) Box (.41) (.28) (.14) 0 F (--17.8 C) Box - -2 (- -.14) (- -.28) - -4 (- -.41) - -6...
  • Page 139 SECTION 8 ELECTRICAL WIRING SCHEMATICS INTRODUCTION This section contains the Electrical Schematics and Wiring Diagrams. The diagrams are presented as follows: Figure 8.1 Provides the legend for use with all figures. Figure 8.2 Provides the schematic diagram for units covered in this manual. Figure 8.3 Provides the schematic diagram for units with single evaporator fan operation capability.

  • Page 140: Figure 8.1 Legend

    Figure 8.1 LEGEND LEGEND SYMBOL DESCRIPTION (Schematic Location) SYMBOL DESCRIPTION (Schematic Location) AMBS AMBIENT SENSOR (E- -19) HUMIDITY SENSOR (G- -20) BYPASS MODULE (D- -20) HOSE HEATER SAFETY THERMOSTAT (G- -14) CIRCUIT BREAKER - - 460 VOLT (J- -1) HEAT TERMINATION THERMOSTAT (F- -12) CIRCUIT BREAKER - - AUTO TRANSFORMER (D- -1) HUMIDITY WATER HEATER (Figure 8-4) CRANKCASE HEATER (T- -2)

  • Page 141: Figure 8.2 Schematic Diagram

    Figure 8.2 SCHEMATIC DIAGRAM 8–3 T-316...

  • Page 142: Figure 8.3 Schematic Diagram -- Units With Single Evaporator Fan Capability

    Figure 8.3 SCHEMATIC DIAGRAM -- Units with Single Evaporator Fan Capability T-316 8–4...

  • Page 143: Figure 8.4 Schematic Diagram -- Transfresh And Vent Position Sensors (Vps)

    Figure 8.4 SCHEMATIC DIAGRAM -- TransFRESH and Vent Position Sensors (VPS) SEE FIGURE SEE FIGURE 7--2 7--2 TO KB7 TransFRESH Controller Lower Air Exchange VPS Upper Air Exchange VPS 8–5 T-316...

  • Page 144: Figure 8.5 Schematic Diagram -- Emergency Bypass

    Figure 8.5 SCHEMATIC DIAGRAM -- Emergency Bypass To ST10 To TRX2 To QC1 To QC1 To MC6 To QC1 CONTROLLER T-316 8–6...

  • Page 145: Figure 8.6 Schematic Diagram, Wiring Diagram-- Electronic Partlow Recorder

    Figure 8.6 SCHEMATIC DIAGRAM, WIRING DIAGRAM-- Electronic Partlow Recorder NOTE: STANDARD CONTROLLER JUMPERS: MA3 TO MA7 AND MA9 TO MA11 (SEE Figure 8-2 ) ARE REMOVED IN THIS APPLICATION NOTE: STANDARD CONTROLLER JUMPERS: MA3 TO MA7 AND MA9 TO MA11 (SEE Figure 8-2) ARE REMOVED IN THIS APPLICATION 8–7 T-316...

  • Page 146: Figure 8.7 Unit Wiring Diagram (Sheet 1 Of 2)

    Figure 8.7 UNIT WIRING DIAGRAM (Sheet 1 of 2) UPPER VPS [DF11] TRC2 TRC1 WIRES TO TR X2: DF--(TFC), P--(TFC), BMA2,CIB1, GRD, CHA2, RMA, KA12, EFA2, HRA2 & CR8 ECG1 [EB8] LOWER VPS (ICF MAY BE IN CONTROL BOX) T-316 8–8...

  • Page 147: Figure 8.8 Unit Wiring Diagram (Sheet 2 Of 2)

    Figure 8.8 UNIT WIRING DIAGRAM (Sheet 2 of 2) [UVPS1] [UVPS2] [HPRB] NOTE: RM MAY BE OUTSIDE SMVD [BM2B] SMVC [BM1B] SMVB [BM2A] SMVA [BM1A] UVPS3 TFC1 CFA1 [RMC] NOTE: WHEN EB, ED, BM OR CFS IS/ARE INSTALLED, WIRE DESTINATIONS CHANGE FROM THE STANDARD. ADDRESSES FOR THE CHANGED DESTINATIONS ARE SHOWN IN BRACKETS “[XXX]”.

  • Page 148: Figure 8.9 Unit Wiring Diagram (Single Fan Capability) (Sheet 1 Of 2)

    Figure 8.9 UNIT WIRING DIAGRAM (single fan capability) (Sheet 1 of 2) UPPER VPS [DF11] TRC1 TRC2 WIRES TO TR X2: DF- -(TFC), P- -(TFC), BMA2,CIB1, GRD, CHA2, RMA, KA12, EFA2, HRA2 & CR8 ECG1 [EB8] (ICF MAY BE IN CONTROL BOX) LOWER VPS T-316...

  • Page 149: Figure 8.10 Unit Wiring Diagram (Single Fan Capability) (Sheet 2 Of 2)

    Figure 8.10 UNIT WIRING DIAGRAM (single fan capability) (Sheet 2 of 2) [UVPS1] [UVPS2] [HPRB] NOTE: RM MAY BE OUTSIDE SMVD [BM2B] SMVC [BM1B] SMVB [BM2A] SMVA [BM1A] CFA1 TFC1 [RMC] 8–11 T-316...
  • Page 151 INDEX Numerics Condenser Fan and Motor Assembly 7-18 Condenser Fan Motor 3-8 230 Volt Cable 2-2 Condenser Grille 2-3 460 Volt Cable 2-2 Condenser Pressure Control 4-6 Condenser Pressure Transducer 3-7 Configuration Identification 2-1 Abnormal noise or vibration 6-3 Configuration Software (Configuration Variables) 4-4 Abnormal pressures (cooling) 6-3 Connect Power 5-1 Adding Oil to Service Replacement Compressor 7-16...
  • Page 152 Emergency Bypass 5-14 Emergency Defrost 5-14 Labels 2-3 Emergency Operation 5-14 Logging Interval (dCF03) 4-14 Evaporator 2-3 Lower Air (Fresh Air Make Up) 2-3 Evaporator Coil and Hear Assembly 7-23 Lower Fresh Air Makeup Vent 5-3 Evaporator Coil Heaters 3-8 Lower VPS 7-35 Evaporator Coil Replacement 7-23 Evaporator Fan and Motor Assembly 7-24...
  • Page 153 Removing the Expansion Valve 7-22 Replacing High Pressure Switch 7-17 Unit operates long or continuously in cooling 6-1 Replacing The Evaporator Fan Assembly 7-24 Unit runs but has insufficient cooling 6-2 Replacing the Recorder 7-37 Unit Weight 3-7 Re-zeroing the Recording Thermometer 7-38 Unit will not defrost properly 6-2 Rupture Disc 3-7 Unit will not heat or has insufficient heating 6-2...
  • Page 156 Carrier Transicold Division, Carrier Corporation A part of UTC Building & Industrial Systems, a business unit of United P.O. Box 4805 Technologies Corporation. Stock symbol UTX. Syracuse, NY 13221 USA www.carrier.transicold.com...

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