Ingersoll-Rand IRN75-160K-2S, IRN37-160K-CC, IRN250-300H-2S Stopping the machine in an emergency

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9.0 OPERATING INSTRUCTIONS

Start sequence

The compressor will initially start by the operator pressing the local start button or receiving a remote start command. The compressor will start loaded and will ramp up the motor speed to its minimum speed. Once the minimum speed has been achieved, the compressor will begin to control pressure by using its speed regulation. When the system pressure reaches the target pressure, the compressor will start to slow. If the system pressure rises to the immediate stop pressure setpoint the compressor will stop.

If the system pressure rises to the auto stop setpoint and the compressor is at minimum speed, if the blowdown mode is set to off, the compressor will stop. However if the blowdown mode is set to on, the compressor will open the blowdown valve for up to 10 seconds or until the pressure in the separator tank falls to 2.4 Bar (35 psi) before stopping. The compressor will restart once the system pressure falls below the target pressure.

Stop sequence

The compressor can be stopped by a local or remote stop, a shutdown due to an alarm or an emergency stop. All of the above conditions will cause the compressor to stop immediately, except the local or remote stop. A local or remote stop will open the blowdown valve and the compressor will run for up to 10 seconds or until the pressure in the separator tank falls to 35 psi before stopping. The compressor will stop if the system pressure reaches the automatic stop or immediate stop pressure setpoints. However, if the compressor stops for this reason, it will automatically restart when the system pressure falls below the target pressure.

The N250/300H − 2S compressor will operate for 30 seconds with the blowdown valve open and at reduced speed before stopping. This sequence occurs for local or remote stops and when the system pressure reaches the automatic or immediate stop pressure setpoints. The compressor will automatically restart when the system pressure falls below the target pressure.

Important: Depress the emergency stop button when the compressor must be stopped immediately.

Blowdown mode

All 2 stage compressors will blowdown when compressor is signaled to stop. Intellisys indicates that Blowdown Mode is ”not installed”.

If the blowdown mode is set to on, the compressor will open the blowdown valve anytime that it stops. This will release pressure from the airend and separator tank. If the blowdown mode is set to off, the blowdown valve will remain closed when the compressor stops due to an automatic stop

Blower control N37/160K−1S, N50/200H−1S &

N75/160−2S, N100/200H−2S

Fan control N250/300H−2S

The blower speed varies in some conditions to assist in controlling the coolant injection temperature. The blower motor has its own variable speed drive and will ramp up and down as the compressor starts and stops.

Stopping the machine in an emergency

If the machine has to be stopped in an emergency DEPRESS

THE EMERGENCY STOP BUTTON LOCATED UNDERNEATH THE INSTRUMENT PANEL.

This will over−ride the normal unload/stop button and will immediately stop the machine.

Restarting after an emergency

If the unit has been switched off because of a machine malfunction, identify and correct the fault before attempting to restart.

If the unit has been switched off for reasons of safety, ensure that the machine can be operated safely before restarting.

Refer to the PRIOR TO STARTING and START SEQUENCE instructions earlier in this section before restarting the machine.

66IRN37 - 160K - CC & IRN50 - 200H -CC & IRN75 - 160K - 2S & IRN100 - 200H - 2S & IRN 250 - 300H - 2S

http://air.irco.com

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Contents Operation and Maintenance Manual AIR Compressor Group Bonded Warranty & Registered Start UP Contents Somer ForewordIf in Doubt Consult Supervision FOREWORD Abbreviations & Symbols Energy recovery systemERS F.CThis unit was purchased from Purchase Order DetailsRotary Screw AIR Compressor Compressed air SafetyGeneral Information Materials Avoid INGESTION, Skin Contact Inhalation of FumesTransport ElectricalCondensate disposal Coolant disposalText Decals Discharge airLift here Rotation 39540257 RevCondensate Drain Electrical power inlet Safety Graphic Form and Meaning of ISO Symbols Prohibition / Mandatory Information / InstructionsDo not stand on any service valve or Safety Coolant Separator Pressure AIR Discharge Belt Tension Filter Motor Lubrication Receipt / Handling ReceiptIngersoll Rand Company Unpacking and HandlingInstallation Location in PlantFor technical information see section Ensure that the correct tie down points are usedInstallation Discharge and Condensate Piping Installation Electrical Example of voltage imbalance calculation Installation Very ImportantFuse Type Adjusting the Aftercooler Trim Valve Cooling Water PipingModel Minimum cooling water requirement vs Range 50F 70FWater quality recommendations Psi Installation SEA Watercooled Units Selected Units onlyOrifice diameter in mm Outdoor Sheltered Installation General Information Technical INFORMATION-SINGLE StageMinimum ambient temperature C F Weight Kg lbs Cooling clean water flow l/min US 51/38 95/46Sound pressure level dBA Flow at 7.5 Barg m3/minCooling clean water flow l/min US 84/65 95/72 Max fuse size @ 380V − 415V aMax fuse size @ 440V − 480V a Max fuse size @ 550V − 575V aN132K N160K N200H General Information Technical Information − TWO Stage 5933 Flow at 100 psig cfm 11001690 1527Installation DRAWING−N37/45K−CC & N50/60H−CC − Air Cooled KEYInstallation DRAWING− N37/45K−CC & N50/60H−CC − Water Cooled Installation Drawing − N55/75K−CC & N75/100H−CC − Air Cooled Installation DRAWING−N55/75K−CC & N75/100H−CC−Water Cooled General Information General Information General Information General Information KEY 22381206 Revision B Equipment downstream of compressor 23128994 Revision a Stage onlyAir/coolant Coolant Condensate Cooling water W.C. only 22099006 Revision C General Information Process and Instrumentation Diagram N250−300H TWO Stage 22402135 Revision CPiping legend Wiring Schematic N37K − N45K-CC / N50-60h−cc a/c blower vfd Stop FDWires Numbers Function Wire colorWiring schematic n55-75k-cc / n75-100h-cc a/c Blower vfd Label DescriptionWires Numbers Function Wire color SS1-3Wiring schematic n37/45k-cc/n50/60h-cc w/c SgneColor Wiring schematic n55-75k-cc / n75-100h-cc W/c 23131345 Revision a4ATT SENSOR, Package AIR Discharge Temperature 4CTT Revision M Wiring schematic n75-160k-cc / n125-200h-cc A/c22093058 F10 SGNeWiring schematic n75-160k-cc / n125-200h-cc W/c Revision E4SV VALVE, Water Stop 6APT Wiring schematic n250-300H 380-480V SG-Ne4ATT SENSOR, Package AIR Discharge Temperature 6APT General Information General Description Operating Instructions Basic OperationStopping the machine in an emergency Intellisys Controls ArrowsDisplay Screen Main MenuCurrent Status Screen Current Status itemsMain Menu Ready to StartOperator Setpoints Default MIN MAX Step Unit Operator SetpointsCondensate Interval Options Selection MIN MAXSensor Calibration Scheduled startAlarm History Clock FunctionsEnergy Status Messages Service Warnings Initial Check AlarmsAlarms Alarm Main MenuMaintenance Ultra Coolant Maintenance Procedures Prior to attempting any maintenance work, ensure that− Prior to starting Coolant level checking procedure Adding coolantCoolant filter change procedure Separator element checking procedureSeparator element change procedure Drain sequence for N250/300H−2SSeparator element change procedure for N250/ 300H−2S Scavenge screen clean/check procedureStart the compressor and check for leaks and coolant level Separator tank / Pressure systemAir filter change procedure Air filter change procedure N250/300H−2SAircooled Cooler Cleaning Blower motor Re−GreaseN50/100H N37/75K Watercooled Cooler Cleaning High Airend Temperature Sensor checking procedureCoolant Coolers AftercoolerBlower / fan Motor Bearing Maintenance Stored units Motor cowl cleaning N75−160 units onlyDrive Box Filter Removal / Replacement Moisture Separator Check / CleaningFluid and Vibration Monitoring No Loss Drain Trap where fitted Check / CleaningCoolant Sampling Procedure Fault Finding General FaultsSymptom Fault Remedy Compressor will not No power supply to packageCheck and modify settings Or not sealing correctly With correct coolantRemove blockage, repair or replace damaged See aboveWith coolant’ Fault Cause Remedy Pressure transducerIndicated on the INTELhYS Controller Drive FaultsFault Cause Action