Too Rapid Cycling Between Load and Unload | Quinny 65040-AB specification

	Section IX - Troubleshooting


Probable Causes:	Corrective Action:


Compressor does not revert to Load when Service Line Pressure Drops to Reset Pressure:

LOOSE WIRING CONNECTION	CHECK AND TIGHTEN WIRING TERMINALS.
FAULTY PRESSURE SENSOR	REPAIR OR REPLACE AS NECESSARY.
FAULTY SOLENOID	REPAIR OR REPLACE AS NECESSARY.
FAULTY TIMER	CHECK AND REPLACE TIMER.
FAULTY LIFT VALVE(S)	REPAIR OR REPLACE AS NECESSARY.
FAULTY BLOWDOWN VALVE(S)	NO AIR SHOULD BE BLOWING OUT FROM THE MUFFLERS DURING
	LOADED OPERATION.
NETWORK OUT OF SEQUENCE OR	CHECK AND RESET SEQUENCE OR SCHEDULE AS NECESSARY.
SCHEDULE

Compressor Will not Time out or Shut down when Unloaded (Auto Dual Only):

LEAKS IN CONTROL LINES

LEAKS IN SERVICE LINES

STORAGE CAPACITY TOO SMALL

LEAKS IN MINIMUM PRESSURE CHECK VALVE

FAULTY AIR PRESSURE SWITCH

FAULTY AIR PRESSURE SENSORS

CHECK AND REPAIR ANY LEAKS.

CHECK PLANT AIR DISTRIBUTION SYSTEM FOR LEAKS.

ADD MORE STORAGE CAPACITY AS CLOSE TO THE COMPRESSOR AS POSSIBLE.

REPAIR OR REPLACE AS NECESSARY.

REPAIR OR REPLACE AS NECESSARY.

REPLACE AS NECESSARY.

Too Rapid Cycling Between Load and Unload:

LEAKS IN CONTROL LINES	CHECK AND REPAIR ANY LEAKS.
WATER OR ICE IN CONTROL LINES	DRAIN LINES, REPLACE AS NECESSARY.
FAULTY AIR PRESSURE SENSORS	REPLACE AS NECESSARY.
STORAGE CAPACITY TOO SMALL	ADD STORAGE CAPACITY (MINIMUM OF THREE GALLONS PER
	CFM).

Quincy Compressor® - QSD™	75

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Quinny 65040-AB manual Too Rapid Cycling Between Load and Unload

Contents

QSD Series Page Table of Contents Section V Maintenance or Service Preparation Standard Warranty Dimensional Data air-cooled Dimensional Data water-cooled Section I General Safety Precautions Spare Parts Ordering Information Safety Alert Symbols Section II Description Compression Cycle and Air Flow General Description Lubricating Fluid System Cooling SystemMoisture Separator Water-cooled Capacity Control System Electrical System Shutdown Conditions Back-up Control Safety Sensors IndicatorsMain Power on Light High Discharge Air Temperature Lights Section II Description Moving the Unit to the Installation Site Section III InstallationReceiving Location Piping Connections Piping Fit-up Manual Shutoff Valve Guards Electrical Water Quality Water Flow Fan Rotation Fluid Level Prior to Starting Section IV Operating ProceduresStarting the Compressor Stopping the Compressor Normal Operation Stopping 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 Fluid Life Air Filter Input Shaft Seal Preparation for New Seal Installation Airend Sealing System Seal Installation Pressure Switch Section VII Service AdjustmentsPressure Switch Back-up Operating Mode Adjusting Pressure Switch This page Intentionally Left Blank Introduction to Power$ync Section Viii Power$ync II OperationBack-up Mode Operation Do not switch modes with power on the compressor Auto Dual Time Delay Multiple Machine Operational ModeSingle Machine Operational Modes Continuous Run Network Load Delay Time Pressure Settings Connecting Cable to the Power$ync II Circuit Board Network Installation Rocker Switch Settings UP/DOWN DEADBAND, F1 EDIT, Enter Return Network Voltage Tests on Power$ync II SystemsNetwork Setup Start-up Power-up Displays Section Viii Power$ync II Operation U19 Memory Failure Contact Your Service Representative Compressor in Back-up Mode U19 Data not Initialized Press F2 to Initialize Deadband Data Error Press F1 to ClearU19 Data Checksum Error Press F2 to Update Filter Needs Servicing Please Replace AS Soon AS Possible Operational Displays Start-up DisplaysAdditional Sensors Compressor is Starting Programmed Shutdown Compressor is Unloaded Minutes Left to ShutdownCompressor is Unloaded Mode and Pressure Displays Compressor Settings and Maintenance DisplaysCompressor Mode of Operation Auto Dual Timed Stop Press F1 Press F2 Press F1 to change the load and unload pressures Read Pressure Settings pages 34-35 before Machine ID for this Compressor Press Enter to Accept Value Machine ID SetupPlease Wait Network Configuration in Progress Sequence Network Data Before setting or changing a sequence, readUP/DOWN POSITION, F1 EDIT, Enter Return UP/DOWN Machine ID, Enter Return DAY Monday SEQ Network Configuration MenuDAY Monday SEQ Abcd To clear a particular sequence from the memory, press F1 Reset Service Hourmeters Filter Service HourmetersCompressor Hourmeter Menu Compressor Hourmeters Intake Filter Hours Fluid Filter Hours Reset to Press Enter to Return Press F1 to Reset Fluid Filter Hours Press Enter to ReturnPress F1 to Reset Fluid Hours Press Enter to Return Fluid Hours Reset to Press Enter to Return Time Menu To View Current Time Compressor Maintenance Menu Compressor Control TestTo SET Time and Date Time and Date Menu Current Time on this Control Compressor Control Test Menu Unload Valve Test Press F1 HorsepowerUnload Press Fluid Press Modem Baud Rate Setup Unit Configuration DateCompressor Diagnostic Menu View Shutdown LOG Network Diagnostic Section Viii Power$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 Emergency Stop Pressed Shutdown Log Messages Motor Overload STG 2 Discharge RTD Failure Control log has no entries at that point Probable Causes Corrective Action Failure to Start Section IX Troubleshooting Unscheduled Shutdown Section IX Troubleshooting Probable Causes Corrective Action Unscheduled Shutdown High Discharge Air Temperature Frequent Air Cleaner CloggingProbable Causes Corrective Action Low Air Delivery Frequent Fluid Filter Clogging Compressor does not Unload when there is no Air Demand Too Rapid Cycling Between Load and Unload Excessive Fluid in Buffing Air Vent Bowls Pressure Relief Valve ExhaustingWater in Buffing Air Vent Bowls Excessive Fluid in Gearbox Vent Bowl High Interstage Pressure Low Delivery Pressure Microprocessor Will Not Display Messages Erroneous Displays Interval Action Section X- Maintenance Schedule Daily Operating Record Quincy Compressor QSD Quincy Compressor QSD