Section IX Troubleshooting, Unscheduled Shutdown | Quinny 65040-AB

	Section IX - Troubleshooting


Probable Causes:	Corrective Action:


Failure to Start (continued):

RELAY BOARD COMMUNICATION FAILURE	CHECK CABLE AND CONNECTION ENDS OF COMMUNICATION
	CABLE BETWEEN RELAY BOARD AND MICROPROCESSOR.
	UNPLUG AND THEN PLUG THE CONNECTOR BACK IN AT THE
	RELAY BOARD AND AT THE MICROPROCESSOR BOARD.
	CONTACT AN AUTHORIZED QUINCY SERVICE TECHNICIAN.
SAFETY CIRCUIT SHUTDOWN	DIAGNOSE CAUSE IN ACCORDANCE WITH THE INSTRUCTIONS ON
	THE LED DISPLAY. CORRECT CAUSE AND RESTART
	COMPRESSOR.
EMERGENCY STOP BUTTON PRESSED	RESET EMERGENCY STOP BUTTON AND START COMPRESSOR.
	CHECK FOR FAILURE OF THE HAT PROBE(S).
	CHECK FOR FAILURE OF THE COOLANT FLOW SWITCH.
FAULTY START BUTTON	CHECK THE BUTTON FOR MALFUNCTION OR LOOSE CONNECTIONS.
LOOSE WIRE CONNECTIONS	CHECK ALL WIRING TERMINALS FOR CONTACT AND TIGHTNESS.
HIGH DISCHARGE PRESSURE	COMPRESSOR WILL START WHEN STAGE 2 DISCHARGE PRESSURE
	DROPS BELOW 10 PSIG.
CONTACTOR NOT ENGAGING	CHECK CONTROL WIRE CONNECTIONS. CHECK FOR POWER TO
	CONTACTOR COIL. CHECK SIGNAL WIRES FROM CONTACTOR
	AUXILIARY CONTACTS.


Unscheduled Shutdown:

HIGH AIR DISCHARGE TEMPERATURE	CORRECT THE SITUATION IN ACCORDANCE WITH THE
	INSTRUCTION IN THE HIGH DISCHARGE AIR TEMPERATURE
	SECTION OF THIS TROUBLESHOOTING GUIDE. RESTART THE
	COMPRESSOR.
SAFETY CIRCUIT SHUTDOWN	DIAGNOSE CAUSE IN ACCORDANCE WITH THE INSTRUCTIONS ON
	THE LED DISPLAY. CORRECT CAUSE AND RESTART
	COMPRESSOR.
FAULTY HAT SENSORS	CONTACT AN AUTHORIZED QUINCY SERVICE TECHNICIAN FOR
	REPAIRS.
EXCESSIVE DISCHARGE PRESSURE	LOWER FULL LOAD PRESSURE SETTING AT CONTROL PANEL.
LOW FLUID PRESSURE	CHECK FLUID FILTER AND FLUID PUMP FOR PLUGGING. CHECK
	FLUID SUPPLY TEMPERATURE AT INLET TO FLUID PUMP FOR
	FOULED COOLER.

Quincy Compressor® - QSD™	71

Image 73

Quinny 65040-AB manual Section IX Troubleshooting, Unscheduled Shutdown

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 Pressure Readings Temperature Readings Water-cooledStopping the Compressor Emergency Section V Preparing for Maintenance or Service This page Intentionally Left Blank Fluid Specifications SafetySection VI Servicing 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$ync II Circuit Board Network Installation Rocker Switch Settings Network Setup Network Voltage Tests on Power$ync II SystemsUP/DOWN DEADBAND, F1 EDIT, Enter Return Start-up Power-up Displays Section Viii Power$ync II Operation U19 Memory Failure Contact Your Service Representative Compressor in Back-up Mode U19 Data Checksum Error Press F2 to Update Deadband Data Error Press F1 to ClearU19 Data not Initialized Press F2 to Initialize Filter Needs Servicing Please Replace AS Soon AS Possible Operational Displays Start-up DisplaysAdditional Sensors Compressor is Starting Compressor is Unloaded Compressor is Unloaded Minutes Left to ShutdownProgrammed Shutdown Mode and Pressure Displays Compressor Settings and Maintenance DisplaysCompressor Mode of Operation Auto Dual Timed Stop Press F1 Press F2 Press F1 to change the load and unload pressures Read Pressure Settings pages 34-35 before Please Wait Network Configuration in Progress Machine ID SetupMachine ID for this Compressor Press Enter to Accept Value Sequence Network Data Before setting or changing a sequence, readUP/DOWN POSITION, F1 EDIT, Enter Return UP/DOWN Machine ID, Enter Return DAY Monday SEQ Abcd Network Configuration MenuDAY Monday SEQ To clear a particular sequence from the memory, press F1 Reset Service Hourmeters Filter Service HourmetersCompressor Hourmeter Menu Compressor Hourmeters Intake Filter Hours Fluid Filter Hours Reset to Press Enter to Return Press F1 to Reset Fluid Filter Hours Press Enter to ReturnPress F1 to Reset Fluid Hours Press Enter to Return Fluid Hours Reset to Press Enter to Return Time Menu To View Current Time Compressor Maintenance Menu Compressor Control TestTo SET Time and Date Time and Date Menu Current Time on this Control Compressor Control Test Menu Unload Valve Test Press F1 HorsepowerUnload Press Fluid Press Modem Baud Rate Setup Unit Configuration DateCompressor Diagnostic Menu View Shutdown LOG Network Diagnostic Section Viii Power$ync II Operation ETOL00 FTOL00 Network Connection Data Confidence Modem INITIALIZATION** Init Indicator is lit, the indicator will remain litF1 to EDIT/ENTER to Accept Value 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