Carrier SUPRA 950Mt Operation & Service Manual Download

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62-11863

2-2

Figure 2.1 Supra 950MT Model - Top View/Cab Command

1. Dip Stick
2. Muffler
3. Engine (Refer to

Section 2.7.1

)

4. Compressor (Refer to

Section 2.7.4

)

5. Alternator (12 V)
6. Electric standby motor

7. Fittings for MT evaporators
8. Compressor pressure regulating valve (CPR)
9. Filter drier
10. Condenser
11. Coolant bottle
12. Cab Command

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Summary of Contents for SUPRA 950Mt

Page 1: ...Truck Refrigeration OPERATION SERVICE MANUAL For The Supra 950MT with Cab Command Controller Truck Refrigeration Units 62 11863 Rev C ...

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Page 3: ...OPERATION SERVICE MANUAL For The Supra 950MT with Cab Command Controller 2017 Carrier Corporation Printed in USA July 2017 ...

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Page 5: ... 4 2 Condensing Section Refrigeration System 2 12 2 5 REMOTE EVAPORATOR SECTIONS 2 15 2 5 1 Evaporator Coil 2 15 2 5 2 Thermal Expansion Valve TXV 2 15 2 5 3 Defrost Termination Temperature Sensor DTS 2 15 2 5 4 Electric and Electric Hot Gas Heat 2 16 2 5 5 Receiver Pressure Valve RPV 2 16 2 5 6 Main Heat Valve MHV 2 16 2 5 7 Remote Evaporator Hot Gas Valve 1HGV and 2HGV 2 16 2 5 8 Liquid Solenoid...

Page 6: ...tment Status Menu 3 12 3 11 2 Compartment Selection Menu 3 12 3 11 3 Unit Operating Data Parameters 3 12 3 12 ALARM DISPLAY AND RESET 3 15 3 13 STOPPING UNIT 3 18 3 14 REMOTE PANEL 3 18 3 15 MODES OF OPERATION 3 22 3 15 1 Heat Cool Mode 3 22 3 15 2 Defrost Cycle 3 22 3 15 3 Continuous or Start Stop Operation 3 22 3 16 PRE TRIP INSPECTION 3 24 3 16 1 Before Starting Engine 3 24 3 16 2 After Startin...

Page 7: ... System 5 11 5 7 CHARGING THE REFRIGERANT SYSTEM 5 12 5 7 1 Installing a Complete Charge 5 12 5 7 2 Checking the Refrigerant Charge 5 12 5 8 REPLACING THE COMPRESSOR 5 13 5 9 COMPRESSOR OIL LEVEL 5 14 5 9 1 Checking Oil Level in 05G Compressor 5 14 5 9 2 Adding Oil with Compressor in System 5 14 5 9 3 Adding Oil to Service Replacement Compressor 5 14 5 9 4 Removing Oil from the Compressor 5 15 5 1...

Page 8: ...3 6 3 1 Unit Will Not Cool 6 3 6 3 2 Unit Runs But Has Insufficient Cooling 6 3 6 3 3 Unit Operates Long or Continuously in Cooling 6 3 6 3 4 Unit Will Not Heat or Has Insufficient Heating 6 3 6 3 5 Defrost Cycle Malfunction 6 4 6 3 6 Abnormal Pressure Cooling 6 4 6 3 7 Abnormal Pressure Heating 6 5 6 3 8 Abnormal Noise 6 5 6 3 9 Control System Malfunction 6 5 6 3 10 No Evaporator Air Flow or Rest...

Page 9: ...e 3 1 Cab Command 3 1 Figure 4 1 Temperature Controller Op Seq Frozen Range Controller Set Point Below 10 F 12 C 4 3 Figure 4 2 Perishable Continuous Mode Normal Non Lead 4 4 Figure 4 3 Perishable Continuous Mode Normal Lead 4 4 Figure 4 4 Frozen Continuous Mode 4 5 Figure 5 1 Cooling Circuit 5 3 Figure 5 2 Fuel Filter and Fuel Circuit 5 5 Figure 5 3 Electric Fuel Pump 5 6 Figure 5 4 Belt Tension ...

Page 10: ...ment 2 Turned On 3 12 Table 3 4 Display for All Compartments On 3 12 Table 3 5 Display for All Compartments Off 3 12 Table 3 6 Unit Data Codes 3 13 Table 3 7 Alarm Display 3 15 Table 3 8 Engine Coolant Temperature Glow Time 3 23 Table 3 9 Battery Voltages 3 24 Table 4 1 Relay Operation 4 2 Table 5 1 Service Category Descriptions 5 2 Table 5 2 Belt Tension 5 8 Table 5 3 Optimum Operating Superheat ...

Page 11: ...velop with these components contact your nearest Carrier Transicold dealer for replacement CAUTION Under no circumstances should a technician electrically probe the processor at any point other than the connector terminals where the harness attaches Microprocessor components operate at different voltage levels and at extremely low current levels Improper use of voltme ters jumper wires continuity ...

Page 12: ...Start in both Start Stop and Continuous Run modes The unit may start at any time A buzzer will sound for five seconds before the unit is started When performing any check of the refrig eration unit e g checking the belts checking the oil make certain that the RUN STOP Switch is in the OFF 0 position 1 6 ENGINE COOLANT The engine is equipped with a pressurized cooling system Under normal operating ...

Page 13: ...tood and applied during operation and maintenance of the equipment covered herein WARNING Unit may start automatically at any time even if the switch is in the OFF position Use proper lockout tagout procedures before inspection servicing All unit inspection servicing by prop erly trained personnel only WARNING Refrigerant is an acid base liquid and harmful for human contact Wear gloves and eye pro...

Page 14: ...e and cables are not pinched or chafing against any components WARNING Beware of V belts and belt driven components as the unit may start automatically Before ser vicing unit make sure the Run Stop switch is in the STOP position Also disconnect the nega tive battery cable WARNING Do not use high pressure water spray to avoid damaging condenser fins WARNING Do not allow insulated jumper wire to tou...

Page 15: ...ld be primed with clean oil If the filters are not primed the engine may operate for a period with no oil supplied to the bearings CAUTION When changing fuel filter the new filter should be filled with clean fuel CAUTION Extreme care must be taken to ensure the manifold common connection remains immersed in oil at all times Otherwise air and moisture will be drawn into the compressor CAUTION Check...

Page 16: ...62 11863 1 6 1 10 SAFETY DECALS ...

Page 17: ...1 7 62 11863 ...

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Page 19: ...nt Covered Type of Manual Supra 950MT Parts included in T T PLUS Rev D 62 11861 Supra 950MT Operator s Manual 62 10299 Compressor 05G Parts List 62 11167 Engine Workshop Manual Table 2 2 Model Chart Model Number R404A Engine Compressor Standby Motor TDD 36FN4 3M 12 0 LB 5 44 KG D1105 Tri Vortex 37 CFM O5G Rotation speed 1760 rpm 60 hz Table 2 3 Evaporator Model Chart Model Discharge Length Power W...

Page 20: ...Muffler 3 Engine Refer to Section 2 7 1 4 Compressor Refer to Section 2 7 4 5 Alternator 12 V 6 Electric standby motor 7 Fittings for MT evaporators 8 Compressor pressure regulating valve CPR 9 Filter drier 10 Condenser 11 Coolant bottle 12 Cab Command 1 2 3 4 5 6 7 8 9 10 11 12 ...

Page 21: ...del Roadside View 1 Negative Battery Cable 2 MP Wire 3 Fuel Lines 4 Positive Battery Cable 5 Serial Model Plate 6 Oil Filter 7 Fuel Filter 8 Air Cleaner 9 Receiver Sight Glass 10 Receiver 11 Electrical Box 12 Main Heat Valve 13 Receiver Pressure Valve 1 2 3 4 5 6 7 8 12 10 9 9 13 11 ...

Page 22: ... Return Air Sensor 2 Evaporator Coil 3 Defrost Termination Temperature Sensor 4 Evaporator High Temperature Switch 5 Capacitor 6 Fan and Motor Assembly 7 Check Valve Assembly 8 Liquid Line Valve Assembly 9 Hot Gas Valve 10 Electric Heater 1 2 3 4 5 6 7 8 9 10 ...

Page 23: ...1863 Figure 2 5 Electrical Box 1 Capacitors 2 Standby Motor Contactor MC 3 Motor Overload Relay MOL 4 Manual Run Stop Switch 5 EHR Contactors 6 Main Fuse 80 amps 7 Buzzer 8 Relay and Fuse Board 1 2 3 4 6 5 7 8 ...

Page 24: ...ntrol Relay Board View Figure 2 7 Multi Temp Sub Panel The Supra 950MT control relay board allows better maintenance using pin connections TP01 to TP 17 Output voltage can be measured pin by pin to check the relay s power supply ...

Page 25: ...9 Heater Strip Fuse 8 A F27 Fuel Heater Fuse Option 25 A F28 Flashing Relay 5 A F30 2EMR 8 A F31 1 and 2 EMR 8 A F32 1EMR 8 A F33 Flashing Relay 5 A F35 Microprocessor fuse 5 A Table 2 5 Relay Identification Designation Item SSR Starter Solenoid Relay 1CR 2CR Cool Relay 1st and 2nd compartments 1EHR 2EHR Electrical Heat Relay 1st and 2nd compartments FLR Flashing Relay UFR Unloader Front Relay FHR...

Page 26: ...ng Units The Supra 950MT is a one piece condensing unit designed for truck applications available for R404A refrigerant It is equipped with an electric standby motor The model serial number plate is located on the frame on the inside of the unit Table 2 6 Test Point Identification Test Point Circuit TP1 RR NO Output TP2 DER NC Output TP3 F10 Output TP4 DER NO Output TP5 UFR NO Output TP6 SSR NO Ou...

Page 27: ...ions single discharge and double discharge evaporators are available The evaporators are different in size capacity and number of fans See Table 2 3 but all work on the same principle and use the same single phase 50Hz 60Hz fan assembly The electrical heaters vary according to the type of condensing unit used and number of compartments One or more of the following components are located inside the...

Page 28: ...oprocessor place the Run Stop switch in the STOP position 2 4 DESCRIPTION OF CAB COMMAND COMPONENTS 2 4 1 Keypad The keypad Figure 2 1 has 10 keys that allow the operator to initiate various functions display operating data and change operating parameters Arrow Keys and Enter Key Manual Defrost Key Auto Start Stop Continuous Run Key To start the unit in MANUAL START mode the Auto Start Stop Contin...

Page 29: ...ment Selection Menu which is brought up by a double press of the UNIT DATA COMP key from the default screen Or from a single press of the key from the Compartment Sta tus Menu Select the desired compartment using the UP and DOWN ARROW Keys and press the ENTER key to make the compartment On Off 3 Display the unit operating data parameters Pressing the UNIT DATA COMP key for more than 3 seconds will...

Page 30: ...ontacts or relays are used to perform the voltage regulation of the alternator system The regulator is an electronic switching device It senses the voltage appearing at the auxiliary terminal of the alter nator and supplies the necessary field current for maintaining the system voltage at the output terminal The output current is determined by the load 2 4 2 Condensing Section Refrigeration System...

Page 31: ...r 9 and bleed ori fice 8 to the back of the piston bypass valve 7 Unless bled away this pressure tends to close the piston 6 against the piston spring 5 pressure With the solenoid valve 1 energized the solenoid valve stem 2 opens the gas bypass port 3 Refrigerant pressure is bled to the suction manifold 10 through the opened gas bypass port A reduction in pres sure on the piston bypass valve takes...

Page 32: ...closing the gas bypass from the discharge manifold to the suction manifold 10 Cylinder discharge pressure forces open the discharge piston check valve assembly 14 Refrigerant gas passes into the compressor discharge manifold The loaded cylinder bank continues to operate fully loaded until the solenoid valve control device is energized and the gas bypass port is opened c Condenser Subcooler The con...

Page 33: ... a liquid reservoir when there are surges due to load changes in the system as a storage space when pumping down the system and as a liquid seal against the entrance of refrigerant gas into the liquid line The receiver is equipped with two sight glasses for the observation of liquid level and a pressure relief valve 2 5 REMOTE EVAPORATOR SECTIONS The evaporator sections contain the evaporator coil...

Page 34: ... refrigerant leaving the compressor is diverted through the remote evaporator coils 2 5 8 Liquid Solenoid Valve The liquid solenoid valve opens or closes depending on the thermostat 2 5 9 Electric Evaporator Fan Motor The electric evaporator fan motor moves air over the evaporator coil See Section 2 7 6 for unit specifications Compartment 1 Cool Heat Fans On With voltage at the closed N O contacts...

Page 35: ...allowed Oil Pressure Safety Switch OP The Oil Pressure Safety switch automatically stops the engine upon loss of oil pressure The switch is preset to open when the pressure drops below 15 3 psig 1 0 0 2 bar Water Temperature Sensor WTS Located on top of the engine the WTS senses engine water temperature The microprocessor stops the unit when the temperature exceeds 230 F 5F 110 F 3C The sensor is ...

Page 36: ...tch OP Closes above 15 psig 1 05 bar 3 psig 0 2 bar Lube Oil Viscosity API classification CD minimum Engine Model D1105 Used on Supra 950MT Displacement 68 5 in3 1105 cc Do Cylinders 3 Horsepower 14 9 kw 20 hp 2400rpm Weight 214 lbs 97 kg Coolant Capacity 5 quarts 4 7 liters Oil Capacity without oil bypass kit 10 quarts 9 5 liters Operating Speed 2300 2350 rpm Injection Setting 1991 to 2133 psig 1...

Page 37: ...ints 2 6 liters Approved Oil Mobil Arctic EAL 68 Defrost Timer 1 5h 3h 6h or 12 hours Defrost Thermostat Opens at 50 F 5 F 10 3 C Closes at 45 F 5 F 7 3 C High Pressure Cutout Switch HP1 Opens at 465 10 psig 32 1 0 7 bar Closes at 350 10 psig 24 1 0 7 bar High Pressure Cutout Switch HP2 Opens at 348 10 psig 24 0 0 7 bar Closes at 312 10 psig 21 5 0 7 bar Refrigerant Charge Refer to Section 2 7 1 C...

Page 38: ...3 0 Engine Support 40 5 5 Condenser Fan Blade 18 24 4 Engine Clutch 22 29 Table 2 8 Safety Devices Unsafe Conditions Safety Device Low engine lubricating oil pressure Oil pressure safety switch OP automatic reset Refer to Section 2 7 3 High engine cooling water temperature Water temperature sensor WTS Refer to Section 2 7 2 Excessive current draw by glow plug circuit control circuit or starter sol...

Page 39: ...pressure of the liquid and meters the flow of liquid refrigerant to the evaporator to obtain maximum use of the evaporator heat transfer surface Heat Transfer The evaporator tubes have aluminum fins to increase heat transfer heat is removed from the air circulated through the evaporator This cold air is circulated throughout the refrigerated compartment to maintain the cargo at the desired tempera...

Page 40: ...s maximum heating capacity in low ambient conditions Evaporator The evaporator fan passes the air over the hot refrigerant pipes and distributes heated air into the cargo space Accumulator The hot gas travels through the suction line check valve into the accumulator where it is drawn back through the compressor pressure regulating valve CPR to begin the process again Null Mode When temperature is ...

Page 41: ...ceiver Service Valve 9 Subcooler 10 Accumulator 11 Filter Drier 12 Sight Glass 13 Liquid Solenoid Valve LSV 14 Expansion Valve 15 Hot Gas Valve 1HGV AND 2HGV 16 Evaporator 17 Electric Heater 18 Compressor Pressure Regulating Valve CPR 19 Suction Service Valve 20 Receiver Pressure Valve RPV 1 2 3 4 5 6 5 5 7 8 9 10 11 12 18 19 20 RPV 5 5 16 14 15 2HGV 13 LSV2 13 LSV1 17 14 15 1HGV 16 ...

Page 42: ...ceiver Service Valve 9 Subcooler 10 Accumulator 11 Filter Drier 12 Sight Glass 13 Liquid Solenoid Valve LSV 14 Expansion Valve 15 Hot Gas Valve 1HGV AND 2HGV 16 Evaporator 17 Electric Heater 18 Compressor Pressure Regulating Valve CPR 19 Suction Service Valve 20 Receiver Pressure Valve RPV 1 2 3 4 5 6 5 5 7 8 9 11 12 10 18 19 17 5 5 17 16 14 14 15 2HGV 15 1HGV 13 LSV2 13 LSV1 20 RPV ...

Page 43: ... Manual Defrost Key 3 Unit Data Compartment Key 4 Function Key 5 Auto Start Stop Key 6 City Speed Key 7 Road Standby Key 8 Down Arrow Key 9 Enter Key 10 Up Arrow Key 11 I O Switch 12 Fault Light 13 Cool Mode 14 Temperature control active 15 Heat Mode 16 Defrost Mode Icon 17 Road Mode Icon 18 Auto Start Stop Mode 19 Standby Mode 20 City Speed Mode Turtle Icon 21 Temperature out of range 22 Setpoint...

Page 44: ...five seconds and then resets the micro processor 3 2 MICROPROCESSOR CONFIGURATION The microprocessor is configured in accordance with the equipment supplied on an individual unit and the require ments of the original purchase order The configurations do not require change unless the unit has an equipment change or a change is required by the owner Although the configurations may not be modified us...

Page 45: ...ition 2 Place the I O switch in the RUN I position 3 Press and hold the UNIT DATA COMP key to go to compartment selection mode 4 Select the desired compartment using the UP and DOWN arrow key 5 If the unit was previously used in the Standby Mode press the ROAD STANDBY key The microprocessor performs a self test all display messages appear in display window after which time the setpoint and refrige...

Page 46: ... RUN STOP switch which is located on the side of the electrical box in the STOP position 2 Place the I O switch in the OFF O position 3 Connect the standby cable to the unit and then turn the external power circuit on 4 Place the unit RUN STOP switch in the RUN position 5 Place the I O switch in the RUN I position 6 Press the ROAD STANDBY key until the STANDBY icon is displayed 7 Press and hold th...

Page 47: ... unit is switched to Standby and the power plug is not plugged in NO POWER is displayed 3 6 START STOP OPERATION 1 Check if AUTO START STOP indicator is illuminated If not press the AUTO START STOP toggle key to place the unit in Start Stop mode The AUTO START STOP indicator will then be illuminated The AUTO START STOP key is used to change the operating mode from Continuous Run to Auto Start Stop...

Page 48: ... points in the perishable range or 0 5 F 0 3 C for set points in the frozen range The battery voltage drops below 12 2 VDC See Section 3 11 for Unit Data The engine coolant temperature drops below 34 F 1 C NOTE Auto Start Stop operation may be tied to the set point ranges for frozen and perishable loads and the AUTO START STOP key may be locked out 3 7 CONTINUOUS RUN OPERATION 1 If the AUTO START ...

Page 49: ...o original set point if ENTER key is not pressed within five seconds Set points of 22 F to 89 F 30 C to 32 C may be entered via the keypad The microprocessor always retains the last entered set point in memory If no set point is in memory i e on initial startup the microprocessor will lock out the run relay and flash SP on the left hand display until a valid set point is entered The set point may ...

Page 50: ...ANUAL DEFROST key The defrost mode terminates when the evaporator temperature is higher than 55 F 12 8 C Should the defrost cycle not complete within 45 minutes the defrost cycle is terminated automatically by the microprocessor After the 45 minute termination the microprocessor will wait 1 5 hours before attempting another defrost cycle Pressing the MANUAL DEFROST key will override this mode and ...

Page 51: ...nctional parameters are retained in memory A description of the function is displayed on the left side with the corresponding data on the right side Press the FUNCTION CHANGE key or use the UP DOWN arrow keys to dis play the functional parameter list With each press of the FUNCTION CHANGE key the list advances one If the FUNCTION CHANGE key is pressed and held for one second the list advances one ...

Page 52: ...yed in psig or bars i e Degrees F or Degrees C The code display is FN4 The selections are F or C FN5 Maximum Off Time The setting for the Maximum Off Time is within the parameters TEMP STRT FN6 OFF or TIME STRT FN6 ON With the unit in TIME STRT the control forces the engine to restart 30 minutes after shutoff FN7 Auto Manual Start Operation The selection for starting the unit is displayed AUTO OP ...

Page 53: ...de only affects the second or third start attempt The add glow time is deselected when the engine starts or fails to start This parameter does not change due to the Code vs English selection Alarm Reset Alarms can be reset through this function The messages are displayed as ALARM RST or ALARM CLR If the ALARM RST is displayed there is at least one alarm present Pressing the ENTER key clears all th...

Page 54: ...ol the ON OFF status of compartments along with the language English Chinese Use the UP and DOWN arrow keys and press the ENTER key to change the compartment status or change the language The timeout period for the Compartment Selection Menu is 7 seconds after which the user is directed back to the default screen If a high priority alarm occurs the default screen is brought up sooner than the time...

Page 55: ...he display range is 0 to 99999 CD3 Engine Temperature The coolant temperature is displayed with the description WT or CD3 The data is displayed with the proper unit des ignator Degrees Fahrenheit or Celsius i e WT 185F or CD3 185F The display range is 58 F to 266 F 50 C to 130 C CD4 Compartment 1 Return Air Temperature Compartment 1 Return Air Temperature is displayed with the description 1RA or C...

Page 56: ... is not used at this time The Code display is CD12 CD13 Software Revision The Eprom software revision number is displayed with the description REV or CD13 on the left and Eprom software revision number on the right Pressing the Enter key for three seconds will display CD13 U2 on the left and the board mounted software revision number on the right CD14 Serial Number Low The low serial number of the...

Page 57: ...ugh the list See Table 3 7 for list of alarms Alternate Alarm Reset Place the I O switch in the OFF O position Unit can now be restarted after alarm condition has been corrected Table 3 7 Alarm Display Code English Description AL0 ENG OIL Low Engine Oil Pressure AL1 ENG HOT High Engine Coolant Temperature AL2 HI PRESS High Compressor Discharge Pressure AL3 START FAIL Start Failure After Three Atte...

Page 58: ...ive seconds immediately after the starter stops cranking See Section 3 15 3 and Table 3 9 for more detailed information AL5 High Battery Voltage Alarm The High Battery Voltage alarm is displayed with the description HI BATT or AL5 This alarm is generated if the bat tery voltage is above 17 VDC The fault light FL is on and the engine shuts down AL6 Defrost Override Alarm The Defrost Override alarm ...

Page 59: ... energized in electric mode Diesel Electric Relay energized AL15 Fuse Alarm The Fuse alarm is displayed with the description FUSE BAD or AL15 This alarm is generated when the FUSE input is sensed low The fault light FL is on AL16 Compartment 3 Return Air Sensor Alarm Not used in Supra 950MT AL17 Display Alarm When no communications exist between the main board and the display board for eight secon...

Page 60: ...gine electric motor will stop and the microprocessor display will turn off NOTE If both compartments are stopped and the unit RUN STOP switch is still in the RUN position the unit will stop but the microprocessor will stay energized 3 14 REMOTE PANEL The optional remote panel is a user friendly indicator and control that enables the operator to view compartment temperatures The panel can be mounte...

Page 61: ...s ON 3 Press the On Off key to energize the selected compartment 4 The Display unit is explained below POWERSYSTEM ON OFF MANUAL DEFROST ON OFF ON OFF HEAT COOL HEAT COOL COMPARTMENT 1 COMPARTMENT 2 TEMPERATURE C F SET POINT 1 2 3 4 5 6 7 8 9 POWERSYSTEM ON OFF MANUAL DEFROST ON OFF ON OFF HEAT COOL HEAT COOL COMPARTMENT 1 COMPARTMENT 2 TEMPERATURE C F SET POINT 2 3 Waiting for communication with ...

Page 62: ...n all compartments 4 Set lowest set point temperature required 5 Press Carrier logo and P2 is displayed Set next lowest temperature required up to five preset set points are available 6 Pressing the second compartment UP or DOWN arrow key allows the lowest temperature required to be preset in the second compartment Pressing the Carrier logo then moves on to the next lowest up to five 7 Press the C...

Page 63: ... is displayed 6 Press the Carrier logo for 10 seconds and the new information is stored in memory e Locking the Control Panel 1 Press and hold the Carrier logo until it stops flashing 2 The indicator light will illuminate indicating the control panel is locked f Unlocking the Control Panel 1 Press and hold the Carrier logo until the indicator light goes off 2 Once the indicator light is off the co...

Page 64: ... the cab command will put the lowest number compartment into null mode fans only The highest number compartment will initiate defrost first by turning off compartment fans and using both hot gas and electric heat to complete defrost After compartment defrost terminates there will be a one minute opera tion in cool without fans by the compartment that just completed defrost to allow excess moisture...

Page 65: ...t attempts before the starting is locked out and the start failure alarm is activated c Variable Glow Time The glow time for the first start attempt varies in duration based on engine coolant temperature and the type of engine selected The second and third start attempts have a glow time that is five seconds greater than the table amount The glow time can be manually overridden through the functio...

Page 66: ...ormally in Continuous mode If all temperature probes fail and the set point is less than or equal to 10 F 12 C the unit will not shut down 3 16 PRE TRIP INSPECTION 3 16 1 Before Starting Engine 1 Drain water and sediment from fuel tank sump and then fill tank with diesel fuel 2 Check radiator coolant level Add pre mixed 50 50 permanent antifreeze water as required 3 Check evaporator and condenser ...

Page 67: ... signs of lube or fuel oil leaks 5 Check radiator hoses for leaks 6 Check refrigerant level refer to 3 4 1 7 Feel filter drier Excessive temperature drop across drier indicates restriction 8 Check water temperature 150 to 180 F 65 to 82 C 3 17 MICROPROCESSOR OPERATION In order to reduce starter cranking and engine loads when the engine is started the microprocessor always starts and operates in hi...

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Page 69: ...int There are two control ranges Frozen Set point less than 10 4 F 12 C Perishable Set point greater than 10 4 F 12 C In the frozen range there are two control logics depending on whether or not heat is allowed There are also two operating modes Continuous Start Stop a Temperature Control Continuous Mode For DIESEL or STANDBY Modes There are three possible states Cool Heat Null See Figure 4 2 and ...

Page 70: ...4 1 4 Relay Operation a ENGINE Mode Automatic Start Run relay is energized Diesel Electric relay DER receives input from the motor contactor N2 and the microprocessor Run Stop solenoid is activated in RUN position Fuel pump is energized Voltage supply to standby motor contactor and subsequent motor start is prevented Glow plugs are energized via GPR relay and the starter solenoid is energized via ...

Page 71: ...alled the lead compartment The criteria used to decide which compartment should be lead at any given time is as follows If all active compartments are calling for the null mode then some compartments must be forced to accept flow from the compressor In this situation the compartment with the highest set point will be chosen and will become the lead compartment 4 1 6 Pulse Sequence There is a seque...

Page 72: ...allowed Electric or 6 Cyl Hot Gas Heat Only one mode allowed Electric and or 6 Cyl Hot Gas Heat Single or Dual Heat modes allowed 3 6 F 0 8 C ï2 7 F ï1 5 C ï1 4 F ï0 8 C ï0 9 F ï0 5 C 2 7 F 1 5 C 2 3 F 1 3 C 1 8 F 1 0 C ï0 5 F ï0 3 C ï1 8 F ï1 0 C ï1 8 F ï1 0 C Set point 4 Cyl Pulsed Heat 4 Cyl Heat 6 Cyl Heat 6 Cyl Cool 4 Cyl Pulsed Heat 3 6 F 0 8 C 1 8 F 1 0 C ï0 9 F ï0 5 C ï1 8 F ï1 0 C ï1 4 F ...

Page 73: ...4 5 62 11863 Figure 4 4 Frozen Continuous Mode Set point 4 Cyl Cool Null 6 Cyl Cool Null Electric and or 6 Cyl Hot Gas Heat 3 6 F 0 8 C ï7 2 F ï4 0 C ï5 4 F ï3 0 C 3 6 F 2 0 C 1 8 F 0 5 C ...

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Page 75: ...se a refrigerant recovery system when removing refrigerant When working with refrigerants you must comply with all local government environmental laws U S A EPA section 608 5 1 MAINTENANCE SCHEDULE 5 1 1 Oil Change Intervals Filter Type Required Service Petroleum oil without bypass oil filter A B C BD BE F1 F2 Hours 250 1000 1500 2000 3000 6000 12000 Synthetic oil without bypass oil filter A C BD ...

Page 76: ...ck compressor oil level 5 Check alternator brushes Check in accordance with diesel hours PLUS stand by hours 6 Check engine thermostat for proper operation 7 Check defrost Check timer setting and function Check refrigerant control valves for proper operation Check that fans stop Check that defrost ends automatically Check water drainage from evaporator 8 Check fan motor brushes 9 Check and adjust ...

Page 77: ...al air flow Air is pulled in through the front and discharges over the standby motor Compressed air or water may be used as a clean ing agent It may be necessary to use warm water mixed with any good commercial dish washer detergent Rinse coil with fresh water if a detergent is used 2 Drain coolant by removing the lower radiator hose and radiator cap 3 Install the hose and fill system with clean u...

Page 78: ...ne to operating temperature Drain system again and fill with treated water antifreeze c Checking Radiator Operation 1 Visually check the cooling system especially the hose between radiator and coolant bottle 2 Verify coolant level inside the radiator and top off if necessary 3 Power up the unit 4 Run engine to operating temperature until coolant level in coolant bottle increases flow from the radi...

Page 79: ...lter should be filled with clean fuel 5 2 3 Replacing Solenoid a Dual Hold Pull Coil Solenoid During start sequence hold coil is energized When starter is engaged pull coil is energized After engine start max 10s stater disengaged pull coil is de energized Hold coil is kept energized See Section 5 10 2 for solenoid coil replacement procedure 5 2 4 Engine Air Cleaner a Inspection The air cleaner ho...

Page 80: ...mp outlet 3 When running correctly the fuel pump generates noise according to pulsation of the inner piston 5 2 6 Servicing Glow Plugs The CT3 69TV engine has fast glow plugs which take 45 seconds to reach 1 472 F 800 C under 11 VDC In the case of fast burn of glow plugs verify that micro configuration is correct TV for all engine types When servicing the glow plug must be fitted carefully into th...

Page 81: ...connect a VDC meter between ground and terminal B of fuse 28 fuse removed This tests the voltage going to the shunt There should be battery voltage 7 Install fuse 28 8 With the flash circuit energized connect a VDC meter between ground and terminal B of fuse 28 fuse installed This tests the voltage going to the shunt There should be 0 5 to 0 9 VDC 9 Remove fuse 33 10 With the flash circuit energiz...

Page 82: ... N 07 00203 00 as shown in Figure 5 4 is recommended for use whenever V belts are adjusted or replaced Check belt tension at midpoint of longest span between two pulleys NOTE Make sure the belt drive is static not in motion 5 3 2 Trapezoidal V belt Figure 5 5 V belt Arrangement 5 3 3 Alternator Belt a Make sure the negative battery terminal is disconnected b Tension is done by rotating the alterna...

Page 83: ...rning the crank pulley nut At the same time use a flat blunt object to guide the belt of the crank pulley Be careful not to damage grooves on the pulley c Replace the poly V belt by positioning the belt on the water pump pulley and while rotating the engine use a flat blunt object to guide the belt onto the crank pulley Be careful not to damage grooves on the pulley or belt Figure 5 6 Water Pump B...

Page 84: ...ainer Whenever the system is opened it must be evacuated and dehydrated refer to Section 5 6 5 4 2 Removing the Refrigerant Charge Connect a refrigerant recovery system to the unit to remove refrigerant charge Refer to instruction provided by the man ufacturer of the refrigerant recovery system 5 5 LEAK CHECKING THE UNIT If system was opened and repairs completed leak check the unit a Use an elect...

Page 85: ... for evacuation purposes c With the unit service valves closed back seated and the vacuum pump and electronic vacuum gauge valves open start the pump and draw a deep vacuum Shut off the pump and check to see if the vacuum holds This operation is to test the evacuation setup for leaks repair if necessary d Midseat the refrigerant system service valves e Open the vacuum pump and electronic vacuum ga...

Page 86: ...uid refrigerant to flow into the unit until the correct weight of refrigerant has been added as indicated by scales See the following sec tion for checking refrigerant charge Correct charge data is found in Table 2 2 NOTE It is possible that all liquid may not be pulled into the receiver as outlined in step d e When refrigerant cylinder weight scale indicates that the correct charge has been added...

Page 87: ...ocations to keep the compressor sterile during shipment and until it is ready for replacement during the procedure The Customer should retain the original service valves for use on the new replacement compressor The blank off valve pads coming in on the new replacement are retained and used on the failed compressor ship ping for service It is still important to keep the interior of the compressor ...

Page 88: ...each use When the compressor is in operation the pump check valve prevents the loss of refrigerant while allowing service men to the ability to develop sufficient pressure to overcome the operating suction pressure and add oil necessary 1 Backseat the suction service valve and connect oil charging hose to port 2 Crack the service valve and purge the oil hose at oil pump 3 Add oil as necessary b Cl...

Page 89: ...it is energized Verify suction pressure rise of approximately 3 psig 0 2 bars NOTE If either unloader coil energizes and the suction pressure does not change the unloader assembly must be checked 5 10 2 Solenoid Coil Replacement NOTE The coil may be removed without pumping the unit down a Disconnect leads and lift off coil see Figure 5 9 b Verify coil type voltage and frequency of old and new coil...

Page 90: ...5 4 b Remove bracket then replace drier c Check refrigerant level refer to Section 5 7 2 5 12 CHECKING AND REPLACING HIGH PRESSURE CUTOUT SWITCHES HP1 OR HP2 5 12 1 Removing High Pressure Switch The High Pressure switch is located near the top of the compressor a Pump down the unit refer to Section 5 4 Frontseat both suction and discharge service valves to isolate compressor HP or discharge and re...

Page 91: ...icate open Note the regulator pressure gauge reading which should agree with the cutout pressure as specified in Section 2 7 5 g Open pressure on gauge Slowly open bleed off valve to decrease pressure until switch closes light will light or ohmmeter will move Note the regulator pressure gauge reading which should agree with the cut in pres sure as specified in Section 2 7 5 h Install new cutout sw...

Page 92: ...un unit until DEFROST mode can be initiated to check for proper draining from drain pan 5 14 2 Condenser Coil Remove all foreign material from the condenser coil by reversing the normal air flow Air is pulled in through the front and discharges over the engine Compressed air or water may be used as a cleaning agent It may be necessary to use warm water mixed with any good commercial dishwasher det...

Page 93: ...is properly located on the suction line It should be located at 5 or 7 o clock on the suction line flat and tightly secured against the line and insulated with Prestite tape 2 To check superheat install a thermocouple Simpson lead or equal next to the TXV sensing bulb under the strap clamp as shown in Figure 5 13 and insulate with the existing Prestite tape 3 Connect a suction pressure gauge to th...

Page 94: ...mpressor This indicates liquid refrigerant returning to the compressor 5 16 2 Replacing Expansion Valve a Check superheat and adjust valve if adjustable in accordance with the preceding steps If valve requires replacement pump down the unit Refer to Section 5 4 a b Slowly loosen the nut at the base of the valve to relieve any remaining pressure Pull the line away from the valve sufficient to remov...

Page 95: ...r Before installing suction pressure transducer into unit display the suction pressure via the unit status display c While the suction pressure is being displayed press the Enter key for three seconds The display should read 0 If display reads 0 install suction pressure transducer into unit Table 5 4 Sensor Resistance ATS CDT RAS SAS WTS Temperature RAS SAS WTS Resistance In Ohms CDT Resistance In...

Page 96: ...26 1 8 87 8 69 4 20 29 1 2 05 2 01 65 18 137 4 9 66 9 47 2 19 30 9 2 17 2 13 70 21 149 4 10 50 10 30 0 18 32 8 2 31 2 26 75 24 162 1 11 40 11 18 2 17 34 8 2 45 2 40 80 27 175 5 12 34 12 10 4 16 36 8 2 59 2 54 85 29 189 6 13 33 13 07 6 14 38 9 2 73 2 68 90 32 204 5 14 38 14 10 8 13 41 1 2 89 2 83 95 35 220 2 15 48 15 18 10 12 43 3 3 04 2 99 100 38 236 8 16 65 16 33 12 11 45 6 3 21 3 14 105 41 254 2...

Page 97: ... handling techniques should always be stressed Boards should always be handled by their edges in much the same way one would handle a photograph This not only precludes the possibility of ESD damage but also lowers the possibility of physical damage to the electronic components Although the microprocessor boards are fairly rugged when assembled they are more fragile when separated and should alway...

Page 98: ...all the protective cap The configuration screen will now remain available for five minutes Scroll through the configuration list using the Function key and compare the settings with those shown in the table on the following page If any of the configurations need to be changed continue with step 4 below 4 To change the configuration selection Refer to Table 5 7 a Bring the configuration to be chang...

Page 99: ...speed start CNF8 ON OFF OFF Belt driven fan ON ON Electrical fan motors CNF9 ON OFF OFF Out of range alarm not shut down OFF ON Out of range alarm and unit shut down CNF10 ON OFF OFF No auto restart OFF ON Auto restart active if FN5 Time start CNF11 ON OFF OFF Functions normal OFF ON Functions locked CNF12 ON OFF OFF Low oil level alarm OFF ON Active CNF13 ON OFF OFF Disable low refrigerant test O...

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Page 101: ...tor cranks but engine fails to start No fuel in tank Air in fuel system Water in fuel system Plugged fuel filters Plugged fuel lines to injector s Fuel control operation erratic Glow plug s defective Run solenoid defective Fuel pump FP malfunction Check Check Drain Sump Replace Check Engine Manual 5 2 6 5 2 3 5 2 5 Starter cranks engages but dies after a few seconds Engine lube oil too heavy Volta...

Page 102: ...wer to starter motor so lenoid SS Battery defective Loose electrical connections Check Tighten Run solenoid does not ener gize or does not remain ener gized Battery defective Loose electrical connections Oil pressure safety switch OP defective Run relay RR defective Water temperature safety switch open Water temperature sensor WTS defective Run solenoid defective Start Run Off switch defective Che...

Page 103: ...ader malfunction 5 8 5 10 Refrigeration system Abnormal pressure Expansion valve malfunction No or restricted evaporator airflow Unloader malfunction 6 3 6 6 3 10 6 3 9 5 10 Engine does not develop full rpm Engine malfunction Excessive engine load 6 1 2 7 1 6 3 3 Unit Operates Long or Continuously in Cooling Container Hot Load Defective box insulation or air leak Allow time to pull down Correct Re...

Page 104: ...ose or broken V belt Discharge check valve restricted Non condensibles or refrigerant overcharge Hot gas valve 1HGV or 2HGV malfunction 5 14 2 Check 5 3 Replace Replace 6 3 11 Low discharge pressure Compressor valve s worn or broken Low refrigerant charge Hot gas valve 1HGV or 2HGV malfunction 5 8 5 4 1 6 3 11 High suction pressure Compressor valve s worn or broken Compressor Pressure Regulator CP...

Page 105: ...as valve 1HGV or 2HGV malfunction Replace Adjust Replace Check 6 3 8 Abnormal Noise Compressor Loose mounting bolts Worn bearings Worn or broken valves Liquid slugging Insufficient oil Tighten 5 8 5 8 6 3 10 5 9 Condenser or evaporator fan Loose or striking shroud Bearings defective Bent shaft Check Check Check Compressor Drive System V belt cracked or worn Clutch malfunction 5 3 Replace 6 3 9 Con...

Page 106: ...uction pressure Improper bulb location or installation Low superheat setting 5 16 5 16 High superheat Broken capillary 5 16 6 3 12 Hot Gas Valve Malfunction Valve does not function prop erly No power to valve Improper wiring or loose connections Coil defective Valve improperly assembled Coil or coil sleeve improperly assembled Temperature controller malfunction Movement of plunger restricted due t...

Page 107: ...proper polarity when installing battery negative battery terminal must be grounded Reverse polarity will destroy the rectifier diodes in alternator As a precautionary measure dis connect positive battery terminal when charging battery in unit Connecting charger in reverse will destroy the rectifier diodes in alternator NOTICE Under no circumstances should a technician electrically probe the proces...

Page 108: ...wiring schematics Figure 8 1 Electrical Schematic Wiring Diagram Sheet 1 of 2 Based on Drawing 62ï ï04104ï ïART ...

Page 109: ...Figure 8 2 Electrical Schematic Wiring Diagram Sheet 2 of 2 Based on Drawing 62ï ï04104ï ïART ...

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Page 113: ...9 Condenser Subcooler 2 14 Condensing Section 2 9 Condensing Section Refrigeration System 2 12 Continuous or Start Stop Operation 3 22 Continuous Run Operation 3 6 Cooling System 5 3 D Defrost Cycle 3 22 Defrost Termination Temperature Sensor DTS 2 15 Description of CAB Command Components 2 10 Drive Equipment 2 9 Drive Equipment Clutch Assembly 2 10 Drive Equipment Engine 2 10 Drive Equipment Stan...

Page 114: ... Servicing Alternator 5 7 Servicing and Adjusting V Belts Warning 5 8 Servicing Engine Related Components 5 3 Servicing Fuel Pump 5 6 Servicing Glow Plugs 5 6 Setting and Adjusting Superheat 5 19 Solenoid Coil Replacement 5 15 Standby Motor 5 9 Start Stop Operation 3 5 Starting Unit Electric Standby Operation 3 4 Starting Unit Engine Road Operation 3 3 Stopping Unit 3 18 Suction Pressure Transduce...

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Page 116: ...ca Carrier Transicold 700 Olympic Drive Athens GA 30601 USA Tel 1 706 357 7223 Fax 1 706 355 5435 Central America and Mexico Ejercito Nacional 253 A Piso 5 Colonia Anahuac 11320 Mexico D F Tel 55315010 Fax 55315010 ext 1005 CALIFORNIA Proposition 65 Warning Diesel engine exhaust and some of its constituents are known to the State of California to cause cancer birth defects and other reproductive h...

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Carrier SUPRA 950Mt, Operation & Service Manual

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