Manuals / Carrier / Kitchen Appliance / Refrigerator

Carrier 69NT40-511-199 manual Abnormal Noise or Vibrations, Temperature Controller Malfunction

Models: 69NT40-521 69NT40-511-1 69NT40-511-199

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		REMEDY/
CONDITION	POSSIBLE CAUSE	REFERENCE
		SECTION
5.7 ABNORMAL PRESSURES (COOLING)

	Condenser coil dirty	6.17
	Condenser fan rotating backwards	6.18
	Condenser fan inoperative	6.18
High discharge pressure	Refrigerant overcharge or noncondensibles	6.6
High discharge pressure	Discharge pressure regulator valve defective	Replace
	Discharge pressure regulator valve defective	Replace
	Discharge service valve partially closed	Open
	Perishable set point	Normal
	Suction modulation valve (SMV) malfunction	6.25
	Suction service valve partially closed	Open
	Filter-drier partially plugged	6.11
	Low refrigerant charge	6.4/6.6
	Expansion valve defective	6.26
Low suction pressure	No evaporator air flow or restricted air flow	5.10
	Excessive frost on evaporator coil	5.6
	Evaporator fan(s) rotating backwards	6.14/6.16
	Discharge pressure regulator valve defective	Replace
	Suction modulation valve (SMV) malfunction	6.25
Suction and discharge pressures	Heat exchanger defective	Replace
tend to equalize when unit is	Compressor valves defective	6.8
operating	Compressor cycling/stopped	Check

5.8 ABNORMAL NOISE OR VIBRATIONS

	Loose mounting bolts	Tighten
	Worn bearings	6.7
Compressor	Worn or broken valves	6.7
	Liquid slugging Insufficient oil	5.11
		6.10

	Bent, loose or striking venturi	Check
Condenser or Evaporator Fan	Worn motor bearings	6.15/6.18
	Bent motor shaft	6.15/6.18

5.9 TEMPERATURE CONTROLLER MALFUNCTION

	Defective Sensor	6.23
Will not control	Defective wiring	Check
Will not control	Fuse (F1, F2) blown	Replace
	Fuse (F1, F2) blown	Replace
	Suction modulation valve (SMV) circuit malfunction	6.25

5.10 NO EVAPORATOR AIR FLOW OR RESTRICTED AIR FLOW

Evaporator coil blocked	Frost on coil	5.6
Evaporator coil blocked	Dirty coil	6.13
	Dirty coil	6.13
	Evaporator fan motor internal protector open	6.15
No or partial evaporator air flow	Evaporator fan motor(s) defective	6.15/6.16
No or partial evaporator air flow	Evaporator fan(s) loose or defective	6.15
	Evaporator fan(s) loose or defective	6.15
	Evaporator fan contactor defective	Replace
	Evaporator fan contactor defective	Replace		SECTION 5
				SECTION 5

5-3

T-268-07

Image 93

Carrier 69NT40-511-199, 69NT40-521 manual Abnormal Noise or Vibrations, Temperature Controller Malfunction

Contents

Container Refrigeration Unit Operation Container Refrigeration Unit Models Operating Precautions General Safety NoticesMaintenance Precautions Safety-1 268-07Specific Warning and Caution Statements Safety-2Table of Contents Operation Iii 268-07 Section ServiceList of Illustrations 27 Suction Solenoid Valve SSV -- Alco List of Tables Introduction Section IntroductionModel Model ChartTransformer Humidity Sensor TransFresh PID 69NT40-511-58 69NT40-511-71 69NT40-511-95 69NT40-521-10 Refrigeration Unit -- Front Section General DescriptionEvaporator Section Refrigeration Unit -- Rear Panels Removed 1011 Compressor SectionCondenser Section 268-07 Condenser Section1716 Receiver SectionUnits with Water-Cooled Condenser Water-Cooled Condenser Section OptionalControl Box with a Single-Speed Compressor 1236 9 Control Box with a Two-Speed Compressor Optional Refrigeration System Data Electrical Data Step-Up Power Autotransformer Power Autotransformer OptionalTo Operate Unit on 380/460 vac Power Supply To Operate Unit on 190/230 vac Power SupplyFull Open or Closed Positions Upper Fresh AIR Makeup VentLower Fresh AIR Makeup Vent Optional Air Sampling for Carbon Dioxide CO2 LevelRefrigeration Circuit with Receiver 10. Refrigeration Circuit with Receiver 268-07 Water--Cooled Condenser with Water Pressure Switch WP Water-Cooled Condenser with Condenser Fan Switch CFSWATER-COOLED Condenser Optional Section Operation Suction Solenoid ValveSuction Solenoid Override Remote Monitoring OptionalSafety and Protective Devices Safety and Protective DevicesUnsafe Condition Safety Device Device Setting Micro-Link 2i Controller/DataCORDER Module Brief Description MICRO-LINK 2i Controller ModuleConfiguration Software Procedure for loading softwareOperational Software Controller Programming Memory CardsConfiguration Title Default Option Number Controller Configuration VariablesKEY Function General Layout of the Controller SectionDisplay Module Controller Function Code Assignments Controller Function CodesCode Title Description Inapplicable Functions DisplayCPC Variable option 34 is set to F refer to Table Code Title Description Controller Alarms Controller Alarm Indications Model 69NT40-511-72ALL Models Check for recharging or replacing battery pack Error Description ERRMicroprocessor Condenser Pressure Control CPC Controller Temperature ControlSection Operation in the economy mode Code 34 set to on PRE-TRIP Diagnostics PRE-TRIP Selection Menu Pre-Trip Mode Pre-Trip Test CodesTitle Description Seconds Component Normal Logic Crel 3 minutesComponent Normal Logic CrelSeconds Minutes Addition, the test will fail if Addition, this test is skipped ifFail Integrated Datacorder Optional Configuration DataCORDER ConfigurationSetting Factory Default Code # Title Description DataCORDER Function CodesDataCORDER Alarms DataCORDER Alarm Indications Access to DataCORDER Functions DataCORDER Alarm Configurations Description SelectionGeneric Mode Standard ModeDataCorder Standard Configuration Description Tion USDA/ Message Trip Comment Usda RecordingPre-Trip Data Recording DataCORDER Scrollback Usda Cold Treatment ProcedureTest # Title Data 10. DataCORDER Pre-Trip DataStandard Configuration Report Sample Cooling Falling Rising TemperatureSET Point AIRYES StepCompressor Cycles OFF PRE-TRIP Inspection Before Starting OperationStarting and Stopping Instructions Units equipped with the integrated DataCORDERAfter Starting Inspection Unit OperationProbe Check Defrost indicator will remain on throughout this periodController Set Above --10C +14F, or --5C +23F optionally Cooling in High Speed with Two-Speed Compressor See Figure268-07 Cooling in High Speed with Two-Speed Compressor Control TransformerCooling in Low Speed with Two-Speed Compressor See Figure Cooling in Low Speed with Two-Speed Compressor 268-07 Cooling with Single-Speed Compressor See Figure Cooling with Single-Speed Compressor 268-07 Heating See Figure Heating Mode 268-07 Snap Freeze Option DefrostArctic = 18 Volt Energized Circuit = De-energized Circuit Two-Speed Compressor Holding ZoneHolding Zone Unit Operates Long or Continuously in Cooling Unit Runs but has Insufficient CoolingRemedy Unit will not Terminate HeatingUnit will not Defrost Properly Temperature Controller Malfunction Abnormal Noise or VibrationsNo Evaporator AIR Flow or Restricted AIR Flow WATER-COOLED Condenser or Water Pressure Switch Power Autotransformer MalfunctionManifold Gauge SET OpenedClosed Removing the Manifold Gauge Set Port To Discharge Service orBlue Hose Blue KnobSuction and Discharge Service Valves Pumping the Unit DownRefrigerant Leak Checking Refrigerant Charge Evacuation and Dehydration268-07 Vacuum Pump Connections Adding Refrigerant to System Full Charge Adding Refrigerant to System Partial ChargeCompressor -- Model 06DR Compressor Disassembly Turn off valves on both hoses to pump10 9 8 Exploded View of Valve Plate Jack hereLow Profile Gear Oil Pump Oil Pump and Bearing Head11. Crankshaft Assembly Compression Rings Compressor ReassemblyIf compressor is without oil Adding Oil to Service Replacement CompressorCompressor OIL Level To Check the Oil Level in the CompressorTo Check Filter-Drier High Pressure SwitchTo Replace Filter-Drier FILTER-DRIERTo Replace the Evaporator Fan Assembly To disassemble the Evaporator Fan AssemblyTo Replace the Evaporator Coil When to check for a defective capacitor To assemble the Evaporator Fan AssemblyEvaporator FAN Motor Capacitors Removing the capacitorCapacitor analyzer Condenser FAN and Motor AssemblyTo Replace Condenser Coil Condenser CoilOhmmeter Unit RunningUnit Off To replace the recording thermometer element BatterySaginomiya Recording Thermometer CalibrationPower Autotransformer Optional Maintenance of Painted SurfacesSensor Checkout Procedure AMBS, DTS, RRS, RTS, SRS & STS Replacing Sensor ProbeRRS or SRS RTS or STSReplacing Sensor STS and SRS OLD Style Probe HolderSensor Mm 1-5/8 inches 35 mm 1/4 inch Sensor Cable Heat Shrink Large Heat Shrink TubingReplacing Sensor RRS and RTS Replacing Sensor Ambs or DTS Ambs or DTSSensor 25.4 mm 1.0 inch Mounting Stud 35mm 1/4 inch Sensor Crimp Fitting Heat Shrink Crimp FittingTubingSuction Solenoid Valve SSV Coil Checkout ProcedureReplacing the Coil Replacing Valve Internal Parts -- Alco See FigureTo Replace Valve Ambient Temperature Cold CoilThermostatic Expansion Valve Removing Expansion Valve See FigureTo Measure Superheat Installing Expansion ValveRemoval Removing and Installing the Controller/DataCORDER ModuleCONTROLLER/DATACORDER Handling of Controller/DataCORDERProcedure for loading Operational Software InstallationProcedure for loading Configuration Software Controller/DataCORDER Programming ProcedureWhat You Will Need Summary of ProcedureDetailed Procedure ReturnPump Fine mesh Support Screen Temperature Resistance Ohms Partlow Bulb Temperature-Resistance ChartWhat You Can Do For Further Help Ambs and DTSBolt DIA Threads Torque MKG Free Spinning Recommended Bolt Torque ValuesNonfree Spinning Locknuts ETC Wear Limits For CompressorsCompressor Torque Values Temperature Pressure 0F --17.8C Box 35F 1.7C BoxAmbient Air Temperature 35F 1.7C Box 0F --17.8C Box35 F 1.7 C Box 17.8 C Box Please Refer to File Diagrams For Schematics and Diagrams Index-1 268-07 IndexIndex-2 Index-3 268-07 Index-4 Index-5 268-07 Index-6