Quinny 65040-AB manual Probable Causes Corrective Action Unscheduled Shutdown

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Section IX - Troubleshooting

Probable Causes:	Corrective Action:

Unscheduled Shutdown (continued):

HIGH PRESSURE DIFFERENTIAL	CHECK LIFT VALVE, BLOWDOWN VALVE AND MINIMUM PRESSURE
	CHECK VALVE OPERATION.
	CONTACT AN AUTHORIZED QUINCY SERVICE TECHNICIAN FOR
	REPAIRS.
COOLANT FLOW SWITCH OPEN	CHECK COOLANT SHUT-OFF VALVE AND WATER SUPPLY.
THERMAL MOTOR OVERLOAD RELAYS	CORRECT THE CAUSE OF THE MOTOR OVERLOADED CONDITION,
TRIPPING	RESET THE OVERLOAD RELAY AND PRESS THE RESET BUTTON.
INCORRECT THERMAL OVERLOAD RELAY	CHECK MOTOR NAMEPLATE AND COMPARE TO OVERLOAD RELAY
SETTING	SETTING.
LOOSE OVERLOAD CONNECTION	TIGHTEN MOUNTING SCREWS ON THERMAL OVERLOAD.
LOOSE WIRE CONNECTIONS	CHECK ALL WIRING TERMINALS FOR CONTACT AND TIGHTNESS.
POWER FAILURE	CHECK POWER SUPPLY AND TRANSFORMER FUSES.
	CHECK THE POWER SUPPLY, POWER SUPPLY CABLES AND RIBBON
	CABLE GOING TO DISPLAY BOARD.
LOW VOLTAGE	CHECK VOLTAGE AND AMPERAGES WHILE OPERATING AT FULL
	LOAD PRESSURE.
FAULTY CONTROL RELAY	REPLACE RELAY.
FAULTY MOTOR	CHECK MOTOR STARTER WIRING BEFORE REMOVING MOTOR.
	REMOVE MOTOR AND HAVE TESTED AT MOTOR MANUFACTURER
	REPAIR CENTER.
FAULTY OR DISCONNECTED RTD	CHECK WIRE CONNECTION BETWEEN RESISTANCE TEMPERATURE
	DETECTOR AND MICROPROCESSOR BOARD. IF RTD
	PERFORMANCE IS QUESTIONABLE, CONTACT AN AUTHORIZED
	QUINCY SERVICE TECHNICIAN.
FAULTY OR DISCONNECTED PRESSURE	CHECK WIRE CONNECTIONS OF PRESSURE SENSORS.
SENSORS	REPLACE SENSORS.
MOTOR OVERLOAD	CORRECT THE CAUSE OF THE OVERLOAD CONDITION. RESET THE
	OVERLOAD RELAY AND PRESS ENTER.
REVERSE ROTATION	CHECK FOR PROPER AIREND ROTATION.
	REDUCE “RAMP” TIME ON REMOTE LOW VOLTAGE OR SOLID
	STATE STARTERS.

72	Quincy Compressor® - QSD™

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Contents QSD Series Page Table of Contents Section V Maintenance or Service Preparation Standard Warranty Dimensional Data air-cooled Dimensional Data water-cooled Safety Precautions Section I GeneralSafety Alert Symbols Spare Parts Ordering InformationSection II Description General Description Compression Cycle and Air FlowMoisture Separator Cooling SystemLubricating Fluid System Water-cooledCapacity Control System Electrical System Back-up Control Shutdown ConditionsMain Power on Light IndicatorsSafety Sensors High Discharge Air Temperature LightsSection II Description Receiving Section III InstallationMoving the Unit to the Installation Site LocationPiping Connections Manual Shutoff Valve Piping Fit-upElectrical GuardsWater Flow Water QualityFluid Level Fan RotationStarting the Compressor Section IV Operating ProceduresPrior to Starting Stopping the Compressor Normal OperationStopping the Compressor Emergency Temperature Readings Water-cooledPressure Readings Section V Preparing for Maintenance or Service This page Intentionally Left Blank Section VI Servicing SafetyFluid Specifications Air Filter Fluid LifePreparation for New Seal Installation Input Shaft SealSeal Installation Airend Sealing SystemPressure Switch Back-up Operating Mode Section VII Service AdjustmentsPressure Switch Adjusting Pressure SwitchThis page Intentionally Left Blank Back-up Mode Operation Section Viii Power$ync II OperationIntroduction to Power$ync Do not switch modes with power on the compressorSingle Machine Operational Modes Multiple Machine Operational ModeAuto Dual Time Delay Continuous RunPressure Settings Network Load Delay TimeNetwork Installation Connecting Cable to the Power$ync II Circuit BoardRocker Switch Settings UP/DOWN DEADBAND, F1 EDIT, Enter Return Network Voltage Tests on Power$ync II SystemsNetwork Setup Power-up Displays Start-upSection Viii Power$ync II Operation Compressor in Back-up Mode U19 Memory Failure Contact Your Service RepresentativeU19 Data not Initialized Press F2 to Initialize Deadband Data Error Press F1 to ClearU19 Data Checksum Error Press F2 to Update Filter Needs Servicing Please Replace AS Soon AS Possible Additional Sensors Start-up DisplaysOperational Displays Compressor is StartingProgrammed Shutdown Compressor is Unloaded Minutes Left to ShutdownCompressor is Unloaded Compressor Mode of Operation Auto Dual Timed Stop Press F1 Compressor Settings and Maintenance DisplaysMode and Pressure Displays Press F2Read Pressure Settings pages 34-35 before Press F1 to change the load and unload pressuresMachine ID for this Compressor Press Enter to Accept Value Machine ID SetupPlease Wait Network Configuration in Progress UP/DOWN POSITION, F1 EDIT, Enter Return Before setting or changing a sequence, readSequence Network Data UP/DOWN Machine ID, Enter ReturnDAY Monday SEQ Network Configuration MenuDAY Monday SEQ Abcd To clear a particular sequence from the memory, press F1 Compressor Hourmeter Menu Compressor Hourmeters Filter Service HourmetersReset Service Hourmeters Intake Filter HoursPress F1 to Reset Fluid Hours Press Enter to Return Press F1 to Reset Fluid Filter Hours Press Enter to ReturnFluid Filter Hours Reset to Press Enter to Return Fluid Hours Reset to Press Enter to ReturnTo SET Time and Date Compressor Maintenance Menu Compressor Control TestTime Menu To View Current Time Time and Date Menu Current Time on this ControlUnload Press HorsepowerCompressor Control Test Menu Unload Valve Test Press F1 Fluid PressCompressor Diagnostic Menu View Shutdown LOG Unit Configuration DateModem Baud Rate Setup Network DiagnosticSection Viii Power$ync II Operation ETOL00 FTOL00 Network Connection Data Confidence F1 to EDIT/ENTER to Accept Value Indicator is lit, the indicator will remain litModem INITIALIZATION** Init Compressor has Shut Down Emergency Stop Button WAS Pressed Sequence Data Error Press F1 to Clear Schedule Data Error Compressor has Shut Down Take Corrective Action Back-up Mode until all faults have been corrected Inlet Temp Fluid Pressure STG 1 OUT Temp STG 2 in Temp Shutdown Log Messages Emergency Stop PressedMotor Overload STG 2 Discharge RTD Failure Control log has no entries at that point Section IX Troubleshooting Probable Causes Corrective Action Failure to StartSection IX Troubleshooting Unscheduled ShutdownProbable Causes Corrective Action Unscheduled Shutdown Probable Causes Corrective Action Low Air Delivery Frequent Air Cleaner CloggingHigh Discharge Air Temperature Frequent Fluid Filter CloggingCompressor does not Unload when there is no Air Demand Too Rapid Cycling Between Load and Unload Water in Buffing Air Vent Bowls Pressure Relief Valve ExhaustingExcessive Fluid in Buffing Air Vent Bowls Excessive Fluid in Gearbox Vent BowlLow Delivery Pressure High Interstage PressureErroneous Displays Microprocessor Will Not Display MessagesSection X- Maintenance Schedule Interval ActionDaily Operating Record Quincy Compressor QSD Quincy Compressor QSD