Carrier Streamline Scroll 69NT20-531-300, Operation & Service Manual

Page 1: ...Model 69NT20 531 300 Streamline Scroll T 309 Rev A Carrier Transicold Container Refrigeration Operation Service...

Page 2: ...EL 69NT20 531 300 Streamline Scroll Carrier Transicold A member of the United Technologies Corporation family Stock symbol UTX Carrier Transicold Divsion Carrier Corporation P O Box 4805 Syracuse N Y...

Page 3: ...safety devices e g bridging an overload or using any sort of jumper wires Problems with the system should be diagnosed and any necessary repairs performed by qualified service personnel When performin...

Page 4: ...e unit circuit breakers CB 1 CB 2 and disconnect main power supply before working on moving parts WARNING Make sure power to the unit is OFF and power plug disconnected before removing capacitor s WAR...

Page 5: ...use the compressor to evacu ate the system below zero psig Never operate the compressor with the suction or discharge service valves closed frontseated Internal damage will result from operating the c...

Page 6: ...3 9 Compressor 1 1 1 3 10 Back Panels 1 1 1 3 11 460 Volt Cable 1 2 1 3 12 Cable Restraint 1 2 1 3 13 Upper Air Fresh Air Make Up 1 2 1 3 14 Evaporator 1 2 1 3 15 Evaporator Fan Operation 1 2 1 3 16...

Page 7: ...4 3 3 6 Perishable Mode Conventional 3 4 3 3 7 Perishable Mode Economy 3 5 3 3 8 Perishable Mode Dehumidification 3 5 3 3 9 Perishable Dehumidification Bulb Mode 3 5 3 3 10 Temperature Control Frozen...

Page 8: ...tion Perishable Mode Cooling 4 5 4 9 3 Sequence Of Operation Perishable Mode Heating 4 6 4 9 4 Sequence Of operation Frozen Mode Cooling 4 6 4 9 5 Sequence Of Operation Defrost 4 6 TROUBLESHOOTING 5 1...

Page 9: ...Switch 6 7 6 10 2 Checking High Pressure Switch 6 8 6 11 CONDENSER COIL 6 8 6 12 CONDENSER FAN AND MOTOR ASSEMBLY 6 8 6 13 FILTER DRIER 6 8 6 14 EXPANSION VALVES 6 9 6 14 1 Checking Superheat 6 9 6 1...

Page 10: ...Sensor Checkout Procedure 6 16 6 22 2 Sensor Replacement 6 17 6 22 3 Sensor Re Installation 6 18 6 23 MAINTENANCE OF PAINTED SURFACES 6 18 6 24 COMPOSITE CONTROL BOX REPAIRS 6 18 6 24 1 Introduction 6...

Page 11: ...ng 4 6 Figure 4 6 Frozen Mode 4 6 Figure 4 7 Defrost 4 7 Figure 6 1 Service Valve 6 1 Figure 6 2 Suction Service Valve 6 1 Figure 6 3 Manifold Gauge Set 6 1 Figure 6 4 R 134a Manifold Gauge Hose Set 6...

Page 12: ...le 3 3 DataCORDER Standard Configurations 3 8 Table 3 4 Controller Configuration Variables 3 13 Table 3 5 Controller Function Codes 3 14 Table 3 6 Controller Alarm Indications 3 17 Table 3 7 Controlle...

Page 13: ...sicold Also aweekly updated copy may befoundat theCarrier Web site www carrier refrigeration com 1 3 OPTION DESCRIPTIONS Various options may be factory or field fitted to the base unit Brief descripti...

Page 14: ...Function Code listing labels will differ depending on the options installed For example additional operating instructions are required to describe start up of a unit equipped with an autotransformer W...

Page 15: ...unction of the upper or lower makeup air vent is to provide ventilation for commodities that require fresh air circulation 1 2 3 8 4 11 5 12 14 9 15 13 10 6 7 16 1 Access Panel Evap Fan 1 2 Access Pan...

Page 16: ...where it is heated or cooled and discharging it at the bottom The evaporator components are accessible by removing the upper rear panel as shown in the illustration or by removing the front access pan...

Page 17: ...e Connection Hidden Economizer Connection Suction Connection Oil Return Connection 6 1 Compressor Guard 2 Supply Temperature Supply Recorder Sensor Assembly 3 Ambient Sensor 4 Supply Air Thermometer P...

Page 18: ...9 12 15 14 16 27 18 19 20 21 22 23 24 25 26 10 13 1 Grille and Venturi Assembly 2 Condenser Fan 3 Key 4 Condenser Fan Motor 5 Condenser Coil 6 Condenser Motor Mounting Bracket 7 Condenser Coil Cover 8...

Page 19: ...n information over the main power line Refer to the mastersystem technical manual for further information 19 20 15 17 18 1 2 3 4 5 6 7 10 9 11 14 8 12 13 16 1 Compressor Phase A Contactor 2 Compressor...

Page 20: ...Heater Termination Thermostat Closes 38 4 _C 100 7 _F e High Pressure Switch Cutout 25 1 0 kg cm 350 10 psig e High Pressure Switch Cut In 18 0 7 kg cm 250 10 psig Unit Configuration Charge Requireme...

Page 21: ...rator Coil Rating 750 watts 5 10 each 230 vac d Evaporator Coil Heaters Resistance cold 66 8 to 77 2 ohms 20 _C 68 _F Type Sheath 380 vac 50 hz 460 vac 60 hz Full Load Amps High Speed 1 6 2 0 Full Loa...

Page 22: ...Protector s IP EM Table 2 1 Safety and Protective Devices UNSAFE CONDITION DEVICE DEVICE SETTING Circuit Breaker CB 1 Manual Reset Trips at 29 amps 460 vac Excessive current draw Circuit Breaker CB 2...

Page 23: ...ater pressure drops below the switch cut out setting the condenser fan will be automatically started When operating a system fitted with a condenser fan switch the condenser fan will be offwhen theswi...

Page 24: ...S DPT CPDS RECEIVER FUSIBLE PLUG SIGHT GLASS MOISTURE INDICATOR LIQUID LINE SERVICE CONNECTION FILTER DRIER ECONOMIZER TXV ESV ECONOMIZER ECONOMIZER TXV BULB HPS OIL RETURN SERVICE VALVE DISCHARGE SER...

Page 25: ...EIVER EVAPORATOR CONDENSER TXV TXV BULB SMV ECONOMIZER TXV BULB LOW SIDE ACCESS VALVE LIV Figure 2 7 Refrigeration Circuit Schematic Economized Operation LIQUID ECONOMIZER PRESSURE TXV TXV BULB SMV SU...

Page 26: ...2 Coverage of the DataCORDER software is provided in paragraph 3 6 The key pad and display module serve to provide user access and readouts for both of the controller functions temperature control an...

Page 27: ...on Arrow Down Change or scroll a selection downward Pre trip repeat backward Return Supply Displays non controlling probe tempera ture momentary display _C _F Displays alternate English Metric scale m...

Page 28: ...ild up of frost and ice and ensure proper air flow across the coil b Provide default independent readouts of set point and supply or return air temperatures c Provide ability to read and if applicable...

Page 29: ...Action Function code Cd29 may be operator set to allow continued operation in the event the control sensors are reading out of range The factory default is full system shutdown Refer to Table 3 5 3 3...

Page 30: ...er to open the suction modulating valve to match the increased heat load while still holding the supply air temperature very close to the set point Opening the modulating valve reduces the temperature...

Page 31: ...In order to activate economy frozen mode operation a frozen set point temperature must be selected The economy mode is active when function codeCd34 is set to ON When economy mode frozen is active th...

Page 32: ...own 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 Configuration Software Operational Soft...

Page 33: ...DataCORDER software uses the supply and return recorder sensors SRS RRS The temperature control software uses the supply and return temperature sensors STS RTS b Generic Mode The generic recording mod...

Page 34: ...ll of Lading 1 Origin Origin Date Destination Discharge Date Comment DataLine Tool Probe Calibration Readings USDA1 0 0 USDA2 0 0 USDA3 0 0 Cargo 0 0 Temperature Units Centigrade _____________________...

Page 35: ...f four ways 1 Normal AC power The DataCORDER is powered up when the unit is turned on via the stop start switch 2 Controller DC battery packpower Ifa battery pack is installed the DataCORDER will powe...

Page 36: ...ty to maintain supply air temperature within one quarter degree Celsius of setpoint and record minute changes in product temperature within the DataCORDER memory thus meeting USDA criteria Information...

Page 37: ...number IA will show if the alarm is inac tive d END is displayed to indicate the end of the alarm list if any alarms are active CLEAr is displayed if all the alarms in the list are inactive e If no a...

Page 38: ...humidification Mode On OFF CnF11 Defrost Off Selection noOFF OFF CnF16 DataCORDER Present On Yes OFF No CnF22 Economy Mode Option OFF Std Full CnF23 Defrost Interval Timer Save Option noSAv SAv CnF24...

Page 39: ...played in Hertz The frequency dis played will be halved if either fuse F1 or F2 is bad alarm code AL21 Cd09 Ambient Tempera ture The ambient sensor reading is displayed Cd10 Compressor Suction Tempera...

Page 40: ...ion variable CnF23 If the software is configured to SAv save for this option then the value of the defrost interval timer will be saved at power down and restored at power up This option prevents shor...

Page 41: ...he desired changes Cd36 Evaporator Speed Select This code is enabled only if in the dehumidification mode code Cd33 and bulb mode Cd35 has been set to bulb If these conditions are not met alt will be...

Page 42: ...gh Alarm 18 is triggered if discharge pressure is 10 over calculated maximum for 10 minutes within the last hour The alarm is display only and will trigger off when the compressor operates for one hou...

Page 43: ...mine validity of its contents This is done by testing the set point and the alarm list If the con tents are invalid Alarm 51 is activated During control processing any operation involving alarm list a...

Page 44: ...larm 61 is triggered by detection of improper amperage resulting from heater activation or deactivation Each phase of the power source is checked for proper amperage This alarm is a display alarm with...

Page 45: ...e Controller program ERR Microprocessor Failure EER 2 Watchdog time out The Controller program has entered a mode whereby the Controller program has stopped executing EER 3 On board timer failure The...

Page 46: ...low speed evaporator fan as determined by the Evaporator Fan speed select configuration variable P3 0 Low Speed Evapora tor Fan Motors On Setup The high speed evaporator fans will be turned on for 10...

Page 47: ...ion modulation valve Monitor suction pressure Step 3 open suction modulation valve to a known position Step 4 close suction modulation valve to a know position Step 5 open econo mizer valve Step 6 clo...

Page 48: ...emperature to the 0 C set point Pass Fail Criteria The test passes if the container temperature reaches set point before the 180 minute timer expires P8 2 Perishable Mode Maintain Tempera ture Test Re...

Page 49: ...s not reach set point 0 3_C 0 17_F before the 180 minute timer expires the test fails and will auto repeat by starting P10 0 over P10 2 Frozen Mode Maintain Temperature Test Requirements Test P10 1 mu...

Page 50: ...at this time dC26 27 S N Left 4 Right 4 The DataCORDER serial number consists of eight characters Function code dC26 contains the first four characters Function code dC27 contains the last four chara...

Page 51: ...ass Fail Skip 6 2 Discharge Pressure Sensor Test Pass Fail Skip 6 3 Suction Pressure Sensor Test Pass Fail Skip 6 4 Compressor Current Draw Test Pass Fail Skip 6 5 Suction Modulation valve Test Pass F...

Page 52: ...is time dAL78 85 Network Data Point 1 8 Out of Range The network data point is outside of its specified range The DataCORD ER is configured by default to record the supply and return recorder sen sors...

Page 53: ...urethepowerplugs areclean and dry before connecting to any power receptacle 4 2 1 Connection To 380 460 vac Power 1 Make sure start stop switch ST on control panel and circuit breaker CB 1 in the cont...

Page 54: ...ER key for five seconds 3 The Trip Start event will be entered in the Data CORDER 4 6 3 Complete Inspection Allow unit to run for 5 minutes to stabilize conditions and perform a pre trip diagnosis in...

Page 55: ...t If the three minute time period expires the unit will terminate pre trip and return to control mode opera tion 2 While the tests are being executed the user may ter minate the pre trip diagnostics b...

Page 56: ...t be run to inactivate alarms 4 9 SEQUENCE OF OPERATION General operation sequences for cooling heating and defrost are provided in the following subparagraphs Schematic representation of controller a...

Page 57: ...r PB to compressor contactor PA Compressor contactors PA is wired to run the compressor on L1 L2 and L3 Compressor contactor PB is wired to run the compressor on L2 L1 and L3 thus providing reverse ro...

Page 58: ...0 2_C 0 4_F above set point contact TH opens to de energize the heat ers The HEAT light is also de energized Theevapo rator fans continue to run to circulate air throughout the container c A safety he...

Page 59: ...t will terminate with the defrost temperature sensor reading rises above the defrost termination thermostat setting When a request for defrost is made by the defrost intermale timer or by demand defro...

Page 60: ...rrent sensor Replace Low line voltage Check Compressor hums but does not Single phasing Check Compressor hums but does not start Shorted or grounded motor windings 6 8 Compressor seized 6 8 5 2 UNIT O...

Page 61: ...ive Replace No control power Evaporator fan internal motor protector open 6 17 No control power Heat relay defective Check Heater termination thermostat open 6 15 Heater s defective 6 15 Heater contac...

Page 62: ...ce Suction service valve partially closed Open Filter drier partially plugged 6 13 Low refrigerant charge 6 7 1 Low suction pressure Expansion valve defective 6 14 Low suction pressure No evaporator a...

Page 63: ...ing valve or orifice Ice formation at valve seat 6 14 Low suction pressure with high s perheat Superheat not correct 6 7 1 superheat Power assembly failure Loss of element bulb charge 6 14 Broken capi...

Page 64: ...wiring of current sensor Check 5 15 ABNORMAL TEMPERATURES Discharge temperature sensor drifting high Replace Failed economizer TXV or solenoid valve Replace High discharge temperature Plugged economi...

Page 65: ...frontseat and backseat both of the service valve connections are open to the access valve path For example the valve stem is first fully backseated when connecting amanifold gaugeto measurepressure Th...

Page 66: ...4 To read system pressures slightly midseat the ser vice valve 5 Repeat the procedure to connect the other side of the gauge set CAUTION To prevent trapping liquid refrigerant in the manifold gauge s...

Page 67: ...r and leak check all connec tions NOTE Only refrigerant 134a should be used to pres surize the system Any other gas or vapor will contaminate the system which will require additional purging and evacu...

Page 68: ...2 psig monitoring it with the compound gauge h Remove refrigerant using a refrigerant recovery sys tem i Repeat steps f and g one time j Remove the copper tubing and change thefilter drier Evacuate un...

Page 69: ...through suction service valve in gas form due to pressure rise in high side of the system Refer to section paragraph 6 7 3 d Backseat manual liquid line valve to close off gauge port Close liquid val...

Page 70: ...lar Protector Retain Base Plate Retain Mylar Protector Retain SST Washer Kit Item 10 SST Washer Kit Item 10 Figure 6 8 Compressor Lower Mounting g Replace the upper mounting bracket shock mount ring a...

Page 71: ...visible oil must beadded tothe compressor b Adding Oil with Compressor in System 1 The recommended method is to add oil using an oil pump at the oil return service valve see item 15 Figure 2 3 2 In an...

Page 72: ...all replacement coil and solder connections f Leak check the coil connections per paragraph para graph 6 5 Evacuate the unit per paragraph 6 6 then charge the unit with refrigerant per paragraph 6 7 6...

Page 73: ...If the economizer valve is suspect it should be replaced a Open the heater access panel see Figure 2 1 to ex pose the evaporator expansion valve b Attach a temperature sensor near the expansion valve...

Page 74: ...alizer connection to the equalizer line 8 Check superheat refer to step 6 14 1 6 15 EVAPORATOR COIL AND HEATER ASSEMBLY The evaporator section including the coil should be cleaned regularly The prefer...

Page 75: ...end facing up 8 Install stem and plunger 9 Place the enclosing tube locknut over the enclosing tube Install spacer over enclosing tube making sure it is seated properly in the enclosing tube locknut T...

Page 76: ...circuit and another capacitor used for the low speed circuit 6 18 1 When To Check For A Defective Capacitor a Fan motor will not change speed For example in the conventional perishable mode the motors...

Page 77: ...operate the override do the following a Press theCODESELECTkey then press anARROW key until Cd41 is displayed in the left window The right window will display a controller communica tions code b Pres...

Page 78: ...attach theSMA 12 stepperdriveto theconnectorgo ing to the valve 2 Set the SMA 12 pulse per second PPS to one PPS and either open or close valve Each LED should light sequentially until all four are li...

Page 79: ...S is open or closed TP3 This test point enables the user to check if the water pressure switch WP contact is open or closed TP 4 This test point enables the user to check if the internal protectorfort...

Page 80: ...switch in the ON position 6 21 4 Removing and Installing a Module a Removal 1 Disconnect all front wire harness connectors and move wiring out of way 2 The lower controller mounting is slotted loosen...

Page 81: ...ective probe only c Cut one wire of existing cable 40 mm 1 1 2 inch shorter than the other wire d Cut one replacement sensor wire opposite color back 40 mm 1 1 2 inch See Figure 6 19 e Strip back insu...

Page 82: ...ng material placed completely over the sensor to insure the coil metal temperature is sensed 6 23 MAINTENANCE OF PAINTED SURFACES The refrigeration unit is protected by a special paint system against...

Page 83: ...d Rivet the patch piece in place e File smooth any rough edges including rivets that may come into contact with wires 6 24 4 Inserts The threaded brass inserts that are molded into the control box wi...

Page 84: ...mm 400 x 375 in 10 24 Threads 34 06231 05 10 6 Insert 12 7 x 9 91 mm 5 x 390 in 1 4 20 Threads 34 06231 06 10 7 Insert 9 53 x 6 76 mm 375 x 266 in 10 24 Threads 34 06231 07 10 8 Durabond Epoxy E20 HP...

Page 85: ...6 21 T 309 03 03 03 03 04 04 03 01 07 07 05 05 06 INSERT PART NUMBERS 34 06231 WHERE THE IS AS INDICATED Figure 6 24 Insert Location...

Page 86: ...e shield c Remove the circuit breaker panel with circuit breaker from the control box d Locate wires CB21 CIA3 CB22 CIA5 and CB23 CIA7 that have been tied back in the wire harness Removetheprotectiveh...

Page 87: ...1 30 1 28 22 6 19 9 137 2 1 40 1 37 24 4 21 4 147 6 1 50 1 48 26 3 22 9 157 9 1 61 1 58 Temperature Pressure _ _ _ _F _ _ _ _C psig kPa kg cm bar 28 2 24 5 168 9 1 72 1 69 30 1 26 1 180 0 1 84 1 80 3...

Page 88: ...S HPS HIGH PRESSURE SWITCH G 11 HR HEATER CONTACTOR L 15 N 3 HS HUMIDITY SENSOR F 21 HTT HEAT TERMINATION THERMOSTAT G 15 IC INTERROGATOR CONNECTOR FRONT REAR P 22 P 21 IP INTERNAL PROTECTOR E 13 G 13...

Page 89: ...7 2 T 309 Figure 7 2 SCHEMATIC DIAGRAM...

Page 90: ...7 3 T 309 Figure 7 3 WIRING DIAGRAM Sheet 1 of 2...

Page 91: ...7 4 T 309 Figure 7 3 WIRING DIAGRAM Sheet 2 of 2...

Page 92: ...14 Controller Software 3 3 D DataCORDER 3 7 3 10 4 2 DataCORDER Software 3 7 DataReader 3 11 DataView 3 11 Defrost Interval 3 4 Defrost Mode 4 7 Dehumidification 1 1 Display Module 3 2 E Evacuation 6...

Page 93: ...1 3 26 4 2 Pressure Readout 1 1 Probe Check 4 3 Pumping Down 6 2 R Refrigerant Charge 6 4 Refrigeration Circuit 2 10 Refrigeration System Data 2 6 Refrigeration Unit Front Section 2 1 Remote Monitorin...