Ingersoll-Rand IRN250-300H-2S manual Drain sequence for N250/300H−2S, Food Grade Coolant option

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10.0 MAINTENANCE

Drain sequence for N250/300H−2S

Remove plug from drain valve located on the bottom of the separator tank.

Install supplied drain hose and fitting assembly in end of drain valve and place end of hose in a suitable pan.

Open drain valve to start drainage.

After draining is complete, close valve, remove hose an fitting assembly from valve, and store in a suitable location for future use.

Replace plug in end of drain valve.

Do not store drain hose in starter box after it has been used to drain the separator tank.

Coolant fill quantity 250−300 hp − 2 stage 40.0 gallons (152 liters)

COOLANT DRAIN

caution

Do not mix coolant types. Use only coolant specified by IR

Start the compressor and check for leaks.

Check the coolant level, refilling if necessary.

Dispose of waste coolant in accordance with local and governmental regulations.

NOTICE

Shorter coolant drain intervals may be necessary if the compressor is operated in adverse conditions.

Food Grade Coolant option

SSR Food Grade Coolant is a polyalphaolefin base coolant. Change after 1000 hours or every 6 months whichever comes first. Do not operate unit past this 1000 hour change interval, as coolant degradation will occur.

Coolant filter change procedure

Loosen filter element with the correct tool.

Remove the element from the housing.

Place the old element in a sealed bag and dispose of in a safe way.

Clean the mating face of the housing.

Remove the new Ingersoll Rand replacement element from its protective package.

Apply a small amount of coolant to the element seal.

Screw the new element down until the seal makes contact with the housing, then hand tighten a further half turn.

Start the compressor and check for leaks and check the coolant level.

Separator element checking procedure

With the compressor running on load, check the separator differential pressure via the Intellisys controller. It will be necessary to change the element if the differential pressure equals zero or exceeds 1 bar

(12 psig).

Separator element change procedure

Remove all the capscrews securing the cover to the tank except the screw opposite the pivot bolt which should be left engaged by 2−3 threads with at least 6.5mm (0.25”) clearance from the screw head to the lid. Rotate the jacking bolt clockwise until the cover lifts off the tank at least 2mm (0.08”) all the way around the tank. The cover can now be rotated to allow access to inside the tank.

Carefully lift out the element spacer and retain for reassembly. Do not damage the flat surfaces of the spacer as this may cause higher oil carryover or leaks. A hoist is available for 175HP (90kW) machines and above if required.

Carefully withdraw the used element, place it in a sealed bag and dispose of it safely.

Remove the O−rings from the top of the tank, the separator element sealing face and the scavenge tube sealing face.

Clean the surfaces on both the tank and the cover.

Install new O−rings

Install replacement element remembering to fit the small O−ring on the scavenge tube and positioning the tube into the matching hole in the Separator Tank

Re−fit the separator element spacer with the notch over the scavenge tube.

Rotate the tank cover back into position taking care not to damage the O−ring, and locate the cover using 2 capscrews but do not tighten down.

84IRN37 - 160K - CC & IRN50 - 200H -CC & IRN75 - 160K - 2S & IRN100 - 200H - 2S & IRN 250 - 300H - 2S

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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 ERS Abbreviations & SymbolsEnergy recovery system F.CThis unit was purchased from Purchase Order DetailsRotary Screw AIR Compressor Compressed air SafetyGeneral Information Transport MaterialsAvoid INGESTION, Skin Contact Inhalation of Fumes 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 Ingersoll Rand Company Receipt / HandlingReceipt Unpacking and HandlingFor technical information see section InstallationLocation in Plant Ensure that the correct tie down points are usedInstallation Discharge and Condensate Piping Installation Electrical Example of voltage imbalance calculation Installation Very ImportantFuse Type Model Minimum cooling water requirement vs Range Adjusting the Aftercooler Trim ValveCooling Water Piping 50F 70FWater quality recommendations Psi Installation SEA Watercooled Units Selected Units onlyOrifice diameter in mm Outdoor Sheltered Installation General Information Technical INFORMATION-SINGLE StageSound pressure level dBA Minimum ambient temperature C F Weight Kg lbsCooling clean water flow l/min US 51/38 95/46 Flow at 7.5 Barg m3/minMax fuse size @ 440V − 480V a Cooling clean water flow l/min US 84/65 95/72Max fuse size @ 380V − 415V a Max fuse size @ 550V − 575V aN132K N160K N200H General Information Technical Information − TWO Stage 1690 5933Flow at 100 psig cfm 1100 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 coolantSeparator element change procedure Coolant filter change procedureSeparator element checking procedure Drain sequence for N250/300H−2SStart the compressor and check for leaks and coolant level Separator element change procedure for N250/ 300H−2SScavenge screen clean/check procedure Separator tank / Pressure systemAircooled Cooler Cleaning Air filter change procedureAir filter change procedure N250/300H−2S Blower motor Re−GreaseN50/100H N37/75K Coolant Coolers Watercooled Cooler CleaningHigh Airend Temperature Sensor checking procedure AftercoolerDrive Box Filter Removal / Replacement Blower / fan Motor Bearing Maintenance Stored unitsMotor cowl cleaning N75−160 units only Moisture Separator Check / CleaningFluid and Vibration Monitoring No Loss Drain Trap where fitted Check / CleaningCoolant Sampling Procedure Symptom Fault Remedy Fault FindingGeneral Faults 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