background image

Carrier Tran

Carrier Transicold Division, Carrier Corporatio

sicold Division, Carrier Corporation, P.O. Box 4805, Syracuse, N.Y. 13221 

n, P.O. Box 4805, Syracuse, N.Y. 13221  U. S. 

U. S.  A.

A.

OPERATION AND

OPERATION AND

SERVICE MANUAL

SERVICE MANUAL

TRUCK REFRIGERATION UNIT

TRUCK REFRIGERATION UNIT

SUPRA

SUPRA

750Mt

750Mt

©

©

 Carrier Refrigeration Operation 2004

 Carrier Refrigeration Operation 2004

D

D

Printed in Franc

Printed in Franc e 03-04 / 62-

e 03-04 / 62--611XX-

-611XX--20

-20

Carrier Transicold Eur

Carrier Transicold Eur ope -

ope -- 10, Bd de l’O

- 10, Bd de l’Oise -

ise -- 95031 Cergy 

- 95031 Cergy  Pontoise Cédex 

Pontoise Cédex  --- FRAN

- FRANCE

CE

, 850Mt

, 850Mt , 950Mt

, 950Mt

Summary of Contents for SUPRA 750Mt

Page 1: ...ERVICE MANUAL TRUCK REFRIGERATION UNIT TRUCK REFRIGERATION UNIT SUPRA SUPRA 750Mt 750Mt Carrier Refrigeration Operation 2004 Carrier Refrigeration Operation 2004 D D Printed in Franc Printed in France...

Page 2: ......

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Page 4: ...os st t c cy yc cl le e 2 2 2 23 3 2 2 8 8 1 11 1 C Co on nt ti in nu uo ou us s o or r S St ta ar rt t S St to op p O Op pe er ra at ti io on n 2 2 2 24 4 2 2 8 8 1 12 2 O Op pt ti io on na al l c co...

Page 5: ...ic logic 3 7 3 5 4 Supra 850 Mt_ specific logic 3 7 3 5 5 Relay operation 3 8 Section 4 SERVICE 4 1 4 1 Maintenance schedule 4 1 4 2 Description of Service Requirements 4 2 4 3 Servicing engine relate...

Page 6: ...ecking low pressure switch 4 15 4 15 Replacing receiver sight glass assembly 4 15 4 16 coils cleaning 4 15 4 16 1 Evaporator coil 4 15 4 16 2 Condenser coil 4 16 4 17 Adjusting the compressor pressure...

Page 7: ...o evaporator air flow restricted air flow 5 6 5 3 10 Expansion valve malfunction 5 6 5 3 11 Hot gas valve malfunction 5 6 5 4 Standby motor malfunction 5 7 Section 6 EXTRACT FROM MATERIAL SAFETY DATA...

Page 8: ...er Set Point Above 12_C 10_F 3 9 Figure 3 2 Temperature Controller Operating Sequence Lead Evaporator Perishable Range Controller Set Point Above 12_C 10_F 3 9 Figure 3 3 Temperature Controller Operat...

Page 9: ...arameters 2 18 Table 2 7 Unit Data Codes 2 20 Table 2 8 Alarm Display 2 21 Table 2 10 Battery Voltages 2 26 Table 3 11 Relay Operation Microprocessor Controller 3 6 Table 4 1 Belt tension 4 8 Table 4...

Page 10: ...Equipment AlwaysuseadequatePersonalProtectiveEquipmentbeforedoinganythingonthis refrigerant unit as explained in this manual Working at height Take all necessary safety precautions when accessing this...

Page 11: ...ORKS UNDER LOW OR HIGH VOLTAGE Always use adequate tools and Personal Protective Equipment when working on electrical devices safety gloves and safety glasses Engine coolant This refrigeration unit is...

Page 12: ...protection of environment during all the life of this refrigeration unit To prevent environmentaldamages NEVERrelease refrigerantintheatmosphere NEVER throw coolant oil battery and chemicals in the na...

Page 13: ...ly to maintain the desired temperature within very close lim its The control system automatically selects high and lowspeedcooling orhighandlow speedheatingasnec essary to maintain the desired tempera...

Page 14: ...ingle 1450 mm 1200 2 MTS 2200 H24 Single 2200 mm 2400 3 MTD 700 H24 Double 700 mm 2400 1 MTD 1100 H24 Double 1100 mm 2400 2 MTD 1450 H24 Double 1450 mm 2400 2 MTD 2200 H24 Double 2200 mm 2400 3 Table...

Page 15: ...sor refer to Table 2 1 4 Alternator 12 V 5 Electric Standby Motor 6 Fittings for Mt_ evaporators 7 Compressor pressure regulating valve CPR 8 Filter drier 9 Condenser 10 Coolant bottle Figure 2 1 Supr...

Page 16: ...y 5 Serial Model plate 6 Fuel filter 7 Speed Run solenoid 8 Oil filter 9 Oil gauge 10 Air cleaner dry air type 11 Receiver sight glass 12 Moisture indication sight glass 13 Receiver 14 Electrical box...

Page 17: ...4 5 1 Muffler 2 Engine refer to Table 2 1 3 Compressor refer to Table 2 1 4 Alternator 12 V 5 Electric standby motor 6 Fitting for Mt_ evaporators 7 Compressor pressure regulating valve CPR 8 Filter...

Page 18: ...l plate 6 Fuel filter 7 Solenoid 8 Oil filter 9 Oil gauge 10 Air cleaner dry air type 11 Receiver sight glasses 12 Moisture indication sight glass 13 Receiver 14 Electrical box 15 Air cleaner Silent v...

Page 19: ...2 7 1 Evaporator Coil 2 Turbine fan 1 2 or 3 according to the model 3 RAS Sensor 4 Coil 5 Heaters 6 Expansion valve 7 Pressure tap Figure 2 3 Evaporator MTS model 1 2 3 4 5 6 7...

Page 20: ...2 8 62 611XX 20 03 04 1 Evaporator Coil 2 Turbine fan 1 2 or 3 according to the model 3 RAS Sensor 4 Coil 5 Heaters 6 Expansion valve 7 Pressure tap Figure 2 4 Evaporator MTD model 1 2 3 4 5 6 7 7...

Page 21: ...rs 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 Capacitors 9 Relay and Fuse board 10 Regulation Bypass RBPR relay Su...

Page 22: ...relay fuse 7 5 A F8 Electric fan motor fuse 7 5 A F9 Electric fan motor fuse 7 5 A F10 Electric fan motor fuse 5 A F11 Fuel pump fuse 3 A RELAYIDENTIFICATION Rep Item SSR Starter solenoid relay CAR C...

Page 23: ...r head which measures the temperature of the coolant Unit shuts down Ambient 50_C 120_F if temperature exceeds 110_C 230_F Ambient 50_C 120_F if temperature exceeds 116_C 240_F or if temperature stays...

Page 24: ...wn at 154_C 310_F for 3 minutes or 177_C 350_F i Bypass pressure switch if used Opens at 1 4 bar 20 psig Closes at 1 9 bar 20 psig 2 5 ELECTRICAL DATA a Evaporator Fan Motors Diesel high speed Diesel...

Page 25: ...on the button should remain in the automatic reset position STANDBY MOTOR OVERLOAD SETTING MODEL 400V 230V SUPRA 750Mt_ 11 A 19 2 A SUPRA 850Mt_ 11 A 20 5 A SUPRA 950Mt_ 20 A 34 6 A 2 6 TORQUE VALUES...

Page 26: ...r temperature sensor WTS 3 Excessive current draw by glow plug cir cuit control circuit or starter solenoid SS Fuse F1 4 Excessive current draw by controller Fuse F2 5 Excessive current draw by contro...

Page 27: ...controller is housed in the con trol box This controller consists of 2 control boards and a relay module 1 The Processor Board includes the microprocessor program memory and necessary input output cir...

Page 28: ...display the operating parameters Each time this key is pressed the display will advance to thenext parameter Thiskey in conjunction with the up down arrow and enter keys will allow the user to change...

Page 29: ...nt 1 ON OFF switch when switched to I the unit and compartment 1 will start in the operating mode last entered cooling or heating Compartment 2 ON OFF switch when switched to I the unit and compartmen...

Page 30: ...alue If the enter keyispressed thedisplaywillstopflashingto indi catethat thevalue has beenentered Thenew valuewill continue to be display for 5 seconds before reverting back to the default display Ea...

Page 31: ...lish or Codes through this function selection The two choices are displayed as ENGLISH or CODES With this parameter set to CODES all display descriptions are set to their code display This parameter w...

Page 32: ...and the proper unit designator Degree C or Degree F i e RAS 85 0F The display range is 38_C to 70_C 36_F to 158_F CD6 Compartment 2 Defrost Thermistor Sensor Compartment 2 Defrost Thermistor Sensor is...

Page 33: ...e Hour Meter 2 The Maintenance Hour Meter 2 setting is displayed withthe description MHR2onthe left sideor CD19 The maintenance hour meteris comparedto one of thehour meters diesel standby or switch o...

Page 34: ...lternator auxiliary signal is not present with the engine running See Section 2 8 12 The fault light FL is turned on AL8 Starter Motor Alarm Thestartermotor alarmisdisplayedwiththedescrip tion STARTER...

Page 35: ...the suction pressure becomesgrea ter than 6 9 bars 100 PSI in heat mode for 60 conti nuousseconds forboth perishable andfrozensetpoints thealarm willbe activated If the suction pressurebeco mes less...

Page 36: ...rol panel User friendly indicator and operator control panels clearly show individualcompartment temperatures with easy to read displays These compact panels can be mounted to suit the individual oper...

Page 37: ...condandthirdstartattemptshavea glowtime that is 5 seconds greater than the table amount The glowtime can bemanually overridden through thefunc tionparameters If thecoolant temperaturesensor isde fecti...

Page 38: ...ill operate normally in continuous mode If all temperature probes fail and the setpoint is lessor equal to 12_C 10_F the unit willnot shut down 2 8 13 Remote Monitoring Microlink Optional The micropro...

Page 39: ...entrained in the suction line into the compressor causing internal damage This is accomplished by the compressor drawing the refrigerant vapor through the outlet pipe of the accumulator whichis equip...

Page 40: ...re With the solenoid valve 1 energized the solenoid valve stem 2 will open the gas bypass port 3 Refrigerant pressurewill be bled to thesuction man ifold 10 through theopened gas bypass port A reduc t...

Page 41: ...cylinder head loader Hot gas bypass 2 9 10 Battery charging alternator CAUTION Observe proper polarity when instal ling battery negative battery terminal must be grounded Reverse polarity willdestroy...

Page 42: ...tion of control box see Figure 2 16 a To beconnectedonstud 3 4 ofDCconnector Diagnosis connection situatedin thecontrolbox aswellaswires AC4 EFB red and AC6 EFB blue situated in control box b Measure...

Page 43: ...gh Check the speed range of the engine and the motor AC Fault finding parts to be checked With load No voltage 1 rotor diode short circuit or out of order Change the 2 diodes on the rotor Correct volt...

Page 44: ...This removal of heat causes the refrigerant to liquefy Liquidrefrigerantflows from the condenser and through a check valve to the receiver The receiver stores the additional charge necessary for low a...

Page 45: ...iver will open This allows the receiver to be pressurized and liquid refrigerant to flow through the drier and sight glass and pass through any liquid line solenoid valves which would be energized The...

Page 46: ...r Heat exchanger 11 Filter drier 12 Sight glass 13 Liquid solenoid valve LSV 14 Expansion valve 15 Hot gas valve HGV 16 Evaporator 17 Electric heater 18 Compressor pressure regulating valve CPR 19 Suc...

Page 47: ...Su Subco bcool oler er 10 10 Accumul Accumulator ator Heat Heat exchang exchanger er 1 11 1 Filt Filter dr er drier ier 12 12 Sig Sight ht gla glass ss 13 13 Liqui Liquid sol d solenoid enoid valve v...

Page 48: ...fer to section 5 3 7 If If pre presen sent t con control trol com compre presso ssor r pre pressu ssures res with a with a manometer manometer 4 4 Check comp Check compressor oil lev ressor oil level...

Page 49: ...unit is switch to NO POWER will be displayed if unit is switch to standby and power plug not plugged in standby and power plug not plugged in 3 3 Ch Chec eck k for forpr prop oper ermo motor torro rot...

Page 50: ...cab command d Manual defrost 1 1 Press the MANUAL DEFROST Key If conditions are required a defrost cycle will be initiated 3 4 2 Operation with auxiliary control panel 1 Start the unit 2 3 2 Press the...

Page 51: ...equired to be preset in the second compartment Pressing Carrier logo will then move on to the nest lowest up to five 7 Press the Carrier logo for 10 seconds and this will remove the lock light and sto...

Page 52: ...lay board through plug connections The relay module which contains plug in interchangeable relays provides the microprocessor with a means for switching the unit components to achieve a desired operat...

Page 53: ...ooling O O I O O O O I or O I or O I or O I or O I or O I or O I or O I or O I or O Off cycle O O I O O O O O O O O O O O O O Low Speed Heating O O I O O OI I or O I or O I or O I or O I or O I or O I...

Page 54: ...linders Unloader is energized during engine or standby motor start 3 5 4 Supra 850 Mt specific logic Supra 850 Mt_ units are equipped with a 05K4 compressor with oneunloader forcapacity control The ca...

Page 55: ...s energized via N2 output Run stop solenoid is activated in RUN posi tion Fuel pump is energized Voltage supply to standby motor contactor and subsequent motor start is prevented Glowplugs are energiz...

Page 56: ...PERISHABLE RANGE CONTINUOUS START STOP Electrical heating for non lead compartment Figure 3 1 Temperature Controller Operating Sequence Perishable Range Controller Set Point Above 12_C 10_F PERISHABLE...

Page 57: ...LL LS HEAT HS HEAT HS COOL Electrical heating for non lead compartment Figure 3 3 Temperature Controller Operating Sequence Frozen Range Controller Set Point Below 12_C 10_F 2_C 0 5_C 4_C 1_C 1 5_C 5_...

Page 58: ...is in the STOP position Also disconnect thenegative battery cable NOTE To avoid damage to the earth s ozone layer use a refrigerant recovery system whenever removing refrigerant 4 1 MAINTENANCE SCHED...

Page 59: ...nator brushes Check it for diesel hours PLUS standby hours D Check engine thermostat for proper operation D Check defrost Check timer setting and function Check refrigerant control valves for proper o...

Page 60: ...diator cleaner should be added six ounces dry 151 grams toone gallon 3 78 liters of water c Run engineforthetimereccomendedby thecleaner product used and drain system while warm Rinse system three tim...

Page 61: ...ove drain plug from oil reservoir and drain engine lube oil CAUTION When changing oil filters the new filters should be primed with clean oil if the filters are not primed the engine may operate for a...

Page 62: ...tem 5 3 Remove solenoid and install the new one clip spring 4 Energize the solenoid and verify that D for STOP SOLENOID run stop lever is at full position Lever should not touch surface D for RUN SOLE...

Page 63: ...sshould be inspectedforleaks orfractures inthe inlet and outlet hoses A damaged air cleaner or hose can seriously affect the performance and life of the engine If housing has been dented or damaged ch...

Page 64: ...1600 rpm to avoid clutch burnout Control procedure Remove clip and connecting rod from stop run solenoid Manually move run lever in full position Start the unit in Engine mode and let it reach high s...

Page 65: ...pump CT2 29TV engine Z482 Water pump Automatic belt tensioner Engine to com pressor 82 72 73 Alternator 114 114 121 Standby motor to compressor 88 68 74 Standby motor to Generator 149 130 121 4 4 2 Tr...

Page 66: ...t close suction service valve and the refrigerant will be trapped between the compressor suction service valve and the manual shutoff King valve 5 Before opening up any part of the system a slight pos...

Page 67: ...nnect three evacuation hoses Do not use standard service hoses as they are not suited forevacuation purposes as shown in Figure 4 7 to the vacuum pump and refrigeration unit Also asshown connect a eva...

Page 68: ...lve half way and allow the liquid refrigerant to flow intotheunituntilthecorrect weightof refrigerant has been added as indicated by scales Correct charge will be found in Table 2 1 NOTE It is possibl...

Page 69: ...hutoff valves but with valve pads Customer should retain the original capacity control valves for use on replacement compressor Check oil level in service replacement compressor Refer to sections 2 3...

Page 70: ...ction and theoil topurge the lines ofair Closethe gauge manifold valve With the unit running frontseat the suction service valve and pull a vacuum in the compressor crankcase SLOWLY crackthesuctiongau...

Page 71: ...AND REPLACING FILTER DRIER 2 methods To Check Filter Drier Check for a restricted or plugged filter drier by feeling the liquid line inlet and outlet connec tions of the drier cartridge If the outlet...

Page 72: ...verify that Using an ohmmeter or continuity light verify that switch opens or switch opens or closes accordi closes according to ng to speci specification fication d d Repeat checkout procedure until...

Page 73: ...actory pre set and should not The CPR valve is factory pre set and should not ne need edad adju justm stmen ent t If If it it is isne nece cess ssaryto aryto ad adju just stthe theva valv lve efor for...

Page 74: ...lamp making valve bulb and then secure loosened clamp making sure both bulbs are firmly secured to suction line sure both bulbs are firmly secured to suction line 1 1 Sucti Suction on line line en end...

Page 75: ...cuits found on the truck trailer microprocessor Although there is less danger of electrical static discharge ESD damage in the outdoor environment where the processor is likely to be handled proper bo...

Page 76: ...alue has not been entered Press the ENTER key to enter the new selection into memory The display will revert to the original selection if no further action is taken for the next 5 seconds c Continue t...

Page 77: ...p Not used CNF15 Ultra Fresh II Not used CNF16 Shut down with alternator aux alarm If CNF16 is on shut down in diesel when alternator auxiliary signal is not present 4 19 3 Controller sensor checkout...

Page 78: ...ar 40 40 4 5 0 32 0 31 0 32 72 5 5 10 5 00 37 35 7 1 0 50 0 49 1 34 75 6 5 32 5 21 34 30 9 9 0 70 0 68 2 36 78 8 5 54 5 43 32 25 12 9 0 91 0 89 3 38 82 1 5 77 5 66 29 20 16 3 1 15 1 12 4 40 85 5 6 01...

Page 79: ...e Bad electrical connections on starter Starter motor malfunctions Starter motor solenoid defective Open starting circuit Incorrect grade of lubricating oil Check Check Check 5 1 3 Engine Manual 5 1 4...

Page 80: ...tch defective Engine lube oil too heavy Check Check Replace Engine Manual Engine Manual Engine Manual Replace 2 2 Starter motor turns but pinion does not engage Pinion or ring gear obstructed or worn...

Page 81: ...d by battery requiring too frequent refilling or charge indicator shows constant charge with engine idling Regulator leads loose dirty corroded terminals or wires broken Defective regulator Clean Repa...

Page 82: ...bes defective or disconnected Replace Tighten Check Will not initiate defrost manually Microprocessor defective Loose terminal connections Defrost thermostats DTT open or defective Glow Defrost switch...

Page 83: ...belts broken or loose Noncondensibles in system 4 8 2 Check 4 4 Check Low discharge pressure Compressor valve s worn or broken Hot gas valve malfunction Low refrigerant charge 4 9 2 9 2 4 8 Low sucti...

Page 84: ...4 8 Clean 4 7 4 18 4 18 Replace Replace 4 18 Low superheat and liquid slugging in compressor Superheat setting too low External equalizer line plugged Ice holding valve open Foreign material in valve...

Page 85: ...ION Standby motor fails to start Motor contactor MC defective Motor Overload OL open Improper power supply Oil pressure switch OPS open Selector switch SSW defective Replace Replace motor 2 5 Replace...

Page 86: ...be a problem However if greater than 1 2 liter pint ingested seek medical attention 5 FIRE FIGHTING MEASURES EXTINGUISHING MEDIA carbon dioxide foam dry chemical and water fog SPECIAL FIRE FIGHTING PR...

Page 87: ...normal industrial eye protection practices should be employed SKIN PROTECTION no special equipment required However good personal hygiene practices should always be followed 10 STABILITY AND REACTIVI...

Page 88: ...C AND CORROSIVE PRODUCTS VAPOR REDUCES OXYGEN AVAILABLE FOR BREATHING AND IS HEAVIER THAN AIR HARMFUL IF INHALED AND MAY CAUSE HEART IRREGULARITIES UNCONSCIOUSNESS OR DEATH LIQUID CONTACT WITH EYES OR...

Page 89: ...ut off and on containers and cylinders Fire fighters and others who may be exposed to products of combustion should wear full fire fighting turn out gear full Bunker Gear andself contained breathing a...

Page 90: ...d other conditions where exposure limit maybesignificantlyexceeded useanapprovedfullfacepositive pressure self contained brea thing apparatus or positive pressure airline with auxiliary self contained...

Page 91: ...for replacement CAUTION Observe proper polarity when installing battery negative battery terminal must be grounded Reverse polarity will destroy the rectifier diodes in alternator As a precautionary m...

Page 92: ...7 2 F i g u r e 7 1 E l e c t r i c a l s c h e m a t i c d i a g r a m M I C R O P R O C E S S O R C O N T R O L L E R 1 2...

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