Quinny 65040-AB manual Section VII Service Adjustments, Adjusting Pressure Switch

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Section VII - Service Adjustments

• Pressure Switch

Adjusting Pressure Switch

!WARNING

Never adjust the pressure higher than the factory setting. Death, serious injury and compressor or property damage could result.

Pressure Switch (Back-up Operating Mode)

The PS1 pressure switch will determine at what pressure the compressor will load and unload. The range adjustment is made by turning the adjustment to increase the cut-in /cut-out pressure and to lower the cut-in/cut-out pressure on PS1. Never exceed the maximum factory pressure rating.

NOTE

See Section VIII - Power$ync II™ Operation for electronic control operation of this unit.

!CAUTION

Before returning compressor to service in Back- up Mode, check for possible component failure. Certain mechanical failures can be mistaken as a microprocessor failure. Continued operation with faulty components may void warranty.

The following procedure should be used for maximum safety when preparing for maintenance or service:

1)Disconnect and lockout the main power switch and hang a sign at the switch of the unit being serviced.

2)Close shut-off valve (block valve) between the compressor and plant air system to prevent any back flow of air into the compressor. Never depend upon a check valve to isolate the system.

3)Open the manual shut-off valve and wait for the pressure in the compressor to be completely relieved before starting service. Do not close the manual vent valve at any time while servicing.

4)Shut off water and depressurize system if water- cooled.

5)Remove supply tube going to pressure switch.

6)Connect regulated source of air with calibrated gauge.

7)Set pressure supply at trip point of pressure switch.

8)Adjust switch to trip at trip point.

9)PS2, PS3, and PS4 are not adjustable. Verify settings are correct per steps 1 through 7.

PS1 Desired unload pressure (adjustable)

PS2 Interstage 23 PSI (fixed)

PS3 Stage 2 discharge 23 PSI (fixed)

PS4 Fluid 15 PSI (fixed)

30	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 FlowCooling System Lubricating Fluid SystemMoisture Separator Water-cooledCapacity Control System Electrical System Back-up Control Shutdown ConditionsIndicators Safety SensorsMain Power on Light High Discharge Air Temperature LightsSection II Description Section III Installation Moving the Unit to the Installation SiteReceiving LocationPiping Connections Manual Shutoff Valve Piping Fit-upElectrical GuardsWater Flow Water QualityFluid Level Fan RotationSection IV Operating Procedures Prior to StartingStarting the Compressor 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 SystemSection VII Service Adjustments Pressure SwitchPressure Switch Back-up Operating Mode Adjusting Pressure SwitchThis page Intentionally Left Blank Section Viii Power$ync II Operation Introduction to Power$yncBack-up Mode Operation Do not switch modes with power on the compressorMultiple Machine Operational Mode Auto Dual Time DelaySingle Machine Operational Modes 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$ync II Operation Compressor in Back-up Mode U19 Memory Failure Contact Your Service RepresentativeU19 Data not Initialized Press F2 to Initialize Deadband Data Error Press F1 to ClearU19 Data Checksum Error Press F2 to Update Filter Needs Servicing Please Replace AS Soon AS Possible Start-up Displays Operational DisplaysAdditional Sensors Compressor is StartingProgrammed Shutdown Compressor is Unloaded Minutes Left to ShutdownCompressor is Unloaded Compressor Settings and Maintenance Displays Mode and Pressure DisplaysCompressor Mode of Operation Auto Dual Timed Stop Press F1 Press F2Read Pressure Settings pages 34-35 before Press F1 to change the load and unload pressuresMachine ID for this Compressor Press Enter to Accept Value Machine ID SetupPlease Wait Network Configuration in Progress Before setting or changing a sequence, read Sequence Network DataUP/DOWN POSITION, F1 EDIT, Enter Return UP/DOWN Machine ID, Enter ReturnDAY Monday SEQ Network Configuration MenuDAY Monday SEQ Abcd To clear a particular sequence from the memory, press F1 Filter Service Hourmeters Reset Service HourmetersCompressor Hourmeter Menu Compressor Hourmeters Intake Filter HoursPress F1 to Reset Fluid Filter Hours Press Enter to Return Fluid Filter Hours Reset to Press Enter to ReturnPress F1 to Reset Fluid Hours Press Enter to Return Fluid Hours Reset to Press Enter to ReturnCompressor Maintenance Menu Compressor Control Test Time Menu To View Current TimeTo SET Time and Date Time and Date Menu Current Time on this ControlHorsepower Compressor Control Test Menu Unload Valve Test Press F1Unload Press Fluid PressUnit Configuration Date Modem Baud Rate SetupCompressor Diagnostic Menu View Shutdown LOG Network DiagnosticSection Viii Power$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 Frequent Air Cleaner Clogging High Discharge Air TemperatureProbable Causes Corrective Action Low Air Delivery Frequent Fluid Filter CloggingCompressor does not Unload when there is no Air Demand Too Rapid Cycling Between Load and Unload Pressure Relief Valve Exhausting Excessive Fluid in Buffing Air Vent BowlsWater 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