Carrier 30RAP010-060 specifications A30-4971, Electronic Expansion Valve Details

Page 48

INCLUDED IN CABLE KIT

CABLE

CABLE RETAINER

MOTOR ADAPTER

ASSEMBLY

GASKET

SIGHTGLASS

SPORLAN

a30-4971

CABLE

MOTOR AND

ADAPTER

ASSEMBLY

FLOWNORMAL

DIRECTIONFLOW

DIRECTION

CABLE

RETAINER

MOTOR ADAPTER ASSEMBLY

Fig. 24 — Electronic Expansion Valve Details

During the next several seconds, carefully connect the nega- tive test lead to pins 1,2,4 and 5 in succession (plug J6 for Cir- cuit A, plug J7 for Circuit B). Digital voltmeters will average this signal and display approximately 6 vdc. If it remains con- stant at a voltage other than 6 VDC or shows 0 volts, remove the connector to the valve and recheck.

Press ENTER and select 0% to close the valve. Check the 4 po- sition DIP switch on the board (all switches should be set to On). If a problem still exists, replace the EXV module. If the reading is correct, the expansion valve and EXV wiring should be checked. Check the EXV terminal strip and interconnecting wiring.

1.Check color coding and wire connections. Make sure they are connected to the correct terminals at the EXV driver and EXV plug and that the cables are not crossed.

2.Check for continuity and tight connection at all pin terminals.

3.Check the resistance of the EXV motor windings. Re- move the EXV module plug (J6 for Circuit A, J7 for Cir- cuit B) and check the resistance of the two windings be- tween pins 1 and 2 for one winding and pins 4 and 5 for the other winding (see Fig. 25). The resistance should be 100 ohms ± 10 ohms.

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FIELD SERVICING INSTRUCTIONS — The EXV valves on sizes 025, 030, 050-060 can be serviced. The EXV valves on all other sizes are hermetic and cannot be disassembled for installation or during service, however, the cable and retainer may be replaced if necessary. Motor kits for the EXV valve are available as replacement parts.

To remove the valve from the system, perform the follow- ing procedure:

1.Be sure the refrigerant has been recovered from the circuit.

2.Disconnect the line voltage to the valve controller. Dis- connect the valve wires from the controller.

3.If the motor fails to operate properly, check the resistance of each motor phase. Resistance between black and white leads or between the red and green leads should be ap- proximately 100 ohms. Differences of more than 10% be- tween phases indicate a defective motor. Resistance be- tween black and red, or any lead and piping, should be in- finite or “open”. Any resistance reading will indicate a shorted winding and the valve will need to be replaced.

4.The output of the controller to the valve can be tested with the following procedure:

a. Disconnect supply voltage to the controller.

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Contents Controls, Start-Up, Operation, Service, and Troubleshooting ContentsContents Safety ConsiderationsGeneral Basic Controls UsageUnit Sizes Unit Nominal Capacity TonsAccessory Navigator Display Module Mode RUN Service Temperatures SET Inputs Outputs Configuration Time Operating AlarmsScrolling Marquee Display Menu Structure TestRun Status Mode and Sub-Mode Directory StrtSUB-MODE Keypad Display SUB-ITEM Comment Entry Expansion VersService Test Mode and Sub-Mode Directory SUB-MODE Keypad Display Comment Entry Expansion TestOuts CmpaTemperature Mode and Sub-Mode Directory Pressure Mode and Sub-Mode DirectorySet Points Mode and Sub-Mode Directory Inputs Mode and Sub-Mode Directory Outputs Mode and Sub-Mode DirectoryConfiguration Mode and Sub-Mode Directory SUB-MODE Keypad Display Comment Entry Expansion EXVOPT1 SUB-MODE Keypad Display Comment Entry Expansion UnitSUB-MODE Keypad Display Comment OPT2XXX XXX.X ΔF Time Clock Mode and Sub-Mode Directory DateDST Operating Mode and Sub-Mode Directory Alarms Mode and Sub-Mode DirectoryMode Item Expansion Description Operating ModesControls Control Module CommunicationCarrier Comfort Network CCN Interface CCN Communication Bus Wiring Thermistor DesignationsStatus Inputs Output RelaysAlmr AUXCCB CHCA30-4962 A30-4963A30-4964 Typical Control Box for 30RAP035-060Typical Wiring Schematic, 30RAP018-030 Units Power Wiring Typical Wiring Schematic, 30RAP018-030 Units Control Wiring A30-4966Typical Wiring Schematic, 30RAP035-060 Units Power Wiring 5283Typical Wiring Schematic, 30RAP035-060 Units Control Wiring A30-5284A30-4967 A30-4968Page CEPL130351 Deadband Multiplier 30RAP Unit Size Control Capacity Steps Capacity %A30-4969 Operating Envelope for R-410A CompressorCooling Set Point Select A30-497030RAP Unit Size FAN Stages Optional Factory-Installed Hydronic Pack Control Methods and Cooling Set PointsControl Occupancy Cooling SET Point Select Clsp Type State CCN→PM1E = YES Configuring and Operating Dual Chiller Con Dual Chiller Configuration Master Chiller Example RsetPart NumberSUB-MODE Keypad Entry Display Item Expansion Comments Dual Chiller Configuration Slave Chiller Example Rset Slave CompleteTo 20 mA Reset Menu Configuration of 4 to 20 mA Cooling Set Point ControlConfiguring Outdoor Air and Space Temperature Reset Configuring Return Temperature ResetMode Keypad SUB Display RED LED Entry ModeOutdoor-Air Temperature Reset To 20-mA Demand Limiting Configuring Demand Limit Item Expansion Comment Entry ConfigurationPRE-START-UP System CheckSTART-UP and Operation A30-497830RAP Minimum Cooler Flow Maximum Cooler Flow Size Temperature Limits for Standard 30RAP Units Operating LimitationsOperation Sequence Unit Size 30RAService Electronic ComponentsEXV Steps Unit Size 30RAP EXV StepsA30-4971 Electronic Expansion Valve DetailsCompressor Replacement Refer to Fig Unit Torque SpecificationCooler A30-4972Oil Charge Check Refrigerant Feed ComponentsA30-4973 A30-4974LWT Factory Settings, High-Pressure Switch Fixed Check Unit SafetiesUnit Cutout CUT-IN Thermistor Well Temp Voltage Resistance Drop 100,260 143 86K Thermistor vs Resistance DTT DropA30-4975 A30-499A30-4976 AccsyP50 Fault History Last 8 faults P51 Software version Mode Nominal Voltage Control Input Start Jumper A30-4977TB1-TB2 TB13A-TB2Fault Codes Parameters Description Mode Motormaster V Program Parameters for Operating ModesPID Maintenance Replacement ModulesReplacement Replacement Part Module Troubleshooting Advanced Scroll Temperature Protection Label 30RAP Unit Cutout CUT-IN SizeTroubleshooting Symptoms Cause RemedyAlarm and Alert Codes T051T110 T153 T197 Alert GENERATED? CCNCSB EMMCompressor Stuck on Failure Alarms Page Appendix a Display Tables SUB-MODE Display Item Description CommentView RUNAppendix a Display Tables StrtVers Pressures Mode and Sub-Mode Directory SUB-MODE Display Item Description Range Comment CoolHead FRZGEN.O SUB-MODE Display Item Description Comment HP.A HP.BEXV.A EXV.BRset Bcst SUB-MODE Display Item Description Comment Time DateDST HOL.LHD.19 HD.30 SUB-MODE Display Item Description Comment SCH.N SCH.LPER.1 PER.2PER.6 PER.7PER.8 Crnt RcrnHist Appendix B CCN Tables CCN Display Tables Aunit General Unit ParametersCCN Display Tables Circaan Circuit a Analog Parameters Description Value Units Point Name ForcibleAppendix B CCN Tables CCN Display Tables Circban Circuit B Analog ParametersCCN Configuration Tables Unit Unit Configuration CCN Configuration Tables OPTIONS1 Options 1 ConfigurationDescription Value Default Units Point Name CCN Display Tables Options Unit ParametersCCN Configuration Tables OPTIONS2 Options 2 Configuration CCN Configuration Tables Schedovr Timed Override SetupCCN Configuration Tables Display Marquee Display Setup CCN Configuration Tables Mmconf Motormaster ConfigurationCCN Service Tables Service Description Value Units Point Name Description Value Point NameCCN Maintenance Tables Alarms Description Version ValueCCN Maintenance Tables PM-PUMP CCN Maintenance Tables Runtest CCN Maintenance Tables Dualchil Appendix C Factory Settings for Pump and Manual Starters SettingAppendix D Optional Bacnet Communications Wiring Optional BACnet Communications WiringAppendix D Optional Bacnet Communications Wiring Table a SW3 Protocol Switch Settings For MS/TPTable B Baud Selection Table DS8 DS7 DS6 DS5 DS4 DS3Table C MS/TP Wiring Recommendations Specification RecommmendationAWG CL2PWiring Specifications Recommended Vendors and Part Numbers RmcorpCMP Table E LED Status Indicators RUN LED Error LED StatusLED Status Control Mode Table G Network Points List108 109 Appendix E Maintenance Summary and LOG Sheets 30RAP Maintenance Interval RequirementsWeekly QuarterlyAppendix E Maintenance Summary and LOG Sheets 30RAP Weekly Maintenance Log30RAP Monthly Maintenance Log Unit Section Action EntryPSI 30RAP Seasonal Shutdown Log 113Copyright 2010 Carrier Corporation START-UP Checklist for 30RAP Liquid Chiller Remove and use for Job File Project InformationII. Preliminary Equipment Check Design InformationIII. Unit Start-Up Start and Operate Machine. Complete the FollowingDual Chiller Control Only Mode RUN Status Record Software VersionsUnit Configuration Settings OPTIONS1 Options ConfigurationSubmode Item Expansion Display Entry OPT1OPTIONS2 Options Configuration CCN CCN Network ConfigurationHP.A Head Pressure Cmp. Delta Configuration HP.B Head Pressure Cmp. Delta ConfigurationEXV.A Circuit a EXV Configuration EXV.B Circuit B EXV ConfigurationMM Motormaster Configuration Settings EXV.BRset Reset Configuration Settings Slct Setpoint and Ramp Load ConfigurationSetpoint SUB-MODE Keypad Display Comment Entry Expansion
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30RAP010-060 specifications

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