Ingersoll-Rand IRN37-160K-CC manual Cooling Water Piping, 50F 70F, 115F, Venting the water system

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7.0 INSTALLATION

7.4 WATERCOOLED UNITS

Cooling Water Piping

Water piping to and from the compressor package must be 1”diameter or larger for N37/75K (N50/100H), 11/2” diameter or larger for N75/160K (N100H/200H) and 2.0” diameter or larger for N250/300H−2S. Isolation valves with side drains should be installed on both the inlet and outlet lines. Also a strainer of 2mm−mesh size should be installed on the inlet line. Strainers are available from Ingersoll Rand. Ingersoll Rand CPN 54689997 (N37/45K & N50/60H) or CPN 54690029 (N55/75K & N75/100H)

A normally closed solenoid valve is fitted to the water outlet side of the compressor package. This is wired into the compressor control circuit and closes when the compressor stops.

Carefully inspect your water system before installing the compressor package. Ensure that the piping is free of scale and deposits that may restrict water flow to the compressor package.

Proper operation of your compressor requires that the water flow listed below be provided at a maximum supply temperature of 46° C (115° F).

Model

Minimum cooling water requirement vs

Range

water inlet temperatures, in litres per

 

minute (US gallons per minute)

 

 

 

 

 

 

10°F /

21°F /

32°C /

46°C /

 

50°F

70°F

90°F

115°F

N37

23(6.0)

23 (6.0)

38 (10.0)

57(15.0)

 

 

 

 

 

N45

27(7.0)

30(8.0)

49(13.0)

76(20.0)

N55

51(13.5)

46(12.0)

38(10.0)

38(10.0)

N75

95(25.0)

68(18.0)

46(12.0)

53(14.0)

 

 

 

 

 

N75-2S

175(46.0)

133(35.0)

106(28.0)

76(20.0)

N90

84(22.0)

72(19.0)

65(17.0)

72(19.0)

N110

95(25.0)

80(21.0)

72(19.0)

87(23.0)

 

 

 

 

 

N132

110(29.0)

91(24.0)

87(23.0)

106(28.0)

N160

125(33.0)

118(31.0)

106(28.0)

125(33.0)

N250

91(24.0)

110(29.0)

179(47.0)

 

 

 

 

 

 

N300

95(25.0)

133(35.0)

220(58.0)

 

Water temperature and pressure gauges should be installed in the water piping for use in any fault finding of the water system. Water pressure should ideally be between 3 and 5 bar (43.5 and 72.5 psi) but must not be above 10 Bar (145 psi)

Water cleanliness is also extremely important. Cleaning of coolers as a result of fouling is a customer responsibility. Therefore, it is highly recommended that proper water quality must meet the requirements listed in WATER QUALITY RECOMMENDATIONS later in this section.

Venting the water system

At the initial installation or for start−up after draining the water system proceed to vent the system as follows.

1.Locate the water system vent cocks on top of the aftercooler and lubricant cooler.

2.Open the water valve(s) allowing water to flow to the package.

3.Open the vent cocks and allow all air to escape from the system. When water is observed at the vent cocks, close them.

The system is now vented.

Draining the water system

Should it become necessary to completely drain the water system, proceed as follows.

1.Disconnect the inlet and discharge water lines from the connections located at the rear of the unit.

2.Locate the aftercooler and lubricant cooler. Remove the drain plugs located at the bottom of the coolers. Allow the system to completely drain.

N75−160k, N100−200H Watercooled

See piping and instrumentation diagram (Section

8.3). The coolers are piped in a ”parallel” water flow arrangement with a manual trim valve controlling the flow through the aftercooler. An additional automatic anti−condensation thermal valve controls the flow of water to the oilcooler. It has a sensor in the separator tank and capillary to signal the valve to open and close in order to avoid water condensing in the tank.

Adjusting the Aftercooler Trim Valve

The anti−condensation valve has no adjustment. The Aftercooler Trim Valve is factory set and should not need adjusting but if disturbed use following procedure. Close valve fully clockwise and then open 1/4 turn. With machine running loaded observe the package discharge temperature Intellisys display. It should be be approx 15° F (8° C) above the water inlet temperature. If it is higher, open the valve a little more. Put a ’Warning − Do Not Adjust’ label on the valve or fit a lock.

IRN37 - 160K - CC & IRN50 - 200H & IRN75 - 160K - 2S & IRN - 100 - 200H - 2S & IRN 250 - 300H - 2S

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http://air.irco.com

 

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Contents Operation and Maintenance Manual AIR Compressor Group Bonded Warranty & Registered Start UP Contents If in Doubt Consult Supervision ForewordSomer FOREWORD Energy recovery system Abbreviations & SymbolsERS F.CRotary Screw AIR Compressor Purchase Order DetailsThis unit was purchased from General Information SafetyCompressed air Avoid INGESTION, Skin Contact Inhalation of Fumes MaterialsTransport ElectricalCoolant disposal Condensate disposalDischarge air Text DecalsLift here 39540257 Rev RotationCondensate Drain Electrical power inlet Prohibition / Mandatory Information / Instructions Safety Graphic Form and Meaning of ISO SymbolsDo not stand on any service valve or Safety Coolant Separator Pressure AIR Discharge Belt Tension Filter Motor Lubrication Receipt Receipt / HandlingIngersoll Rand Company Unpacking and HandlingLocation in Plant InstallationFor technical information see section Ensure that the correct tie down points are usedInstallation Discharge and Condensate Piping Installation Electrical Fuse Type Installation Very ImportantExample of voltage imbalance calculation Cooling Water Piping Adjusting the Aftercooler Trim ValveModel Minimum cooling water requirement vs Range 50F 70FWater quality recommendations Orifice diameter in mm Installation SEA Watercooled Units Selected Units onlyPsi Outdoor Sheltered Installation Technical INFORMATION-SINGLE Stage General InformationCooling clean water flow l/min US 51/38 95/46 Minimum ambient temperature C F Weight Kg lbsSound pressure level dBA Flow at 7.5 Barg m3/minMax fuse size @ 380V − 415V a Cooling clean water flow l/min US 84/65 95/72Max fuse size @ 440V − 480V a Max fuse size @ 550V − 575V aN132K N160K N200H General Information Technical Information − TWO Stage Flow at 100 psig cfm 1100 59331690 1527KEY Installation DRAWING−N37/45K−CC & N50/60H−CC − Air CooledInstallation 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 Stage only 23128994 Revision aAir/coolant Coolant Condensate Cooling water W.C. only 22099006 Revision C General Information 22402135 Revision C Process and Instrumentation Diagram N250−300H TWO StagePiping legend Stop FD Wiring Schematic N37K − N45K-CC / N50-60h−cc a/c blower vfdNumbers Function Wire color WiresLabel Description Wiring schematic n55-75k-cc / n75-100h-cc a/c Blower vfdSS1-3 Wires Numbers Function Wire colorSgne Wiring schematic n37/45k-cc/n50/60h-cc w/cColor 23131345 Revision a Wiring schematic n55-75k-cc / n75-100h-cc W/c4ATT SENSOR, Package AIR Discharge Temperature 4CTT 22093058 Wiring schematic n75-160k-cc / n125-200h-cc A/cRevision M SGNe F10Revision E Wiring schematic n75-160k-cc / n125-200h-cc W/c4SV VALVE, Water Stop 6APT 380-480V SG-Ne Wiring schematic n250-300H4ATT SENSOR, Package AIR Discharge Temperature 6APT General Information General Description Basic Operation Operating InstructionsStopping the machine in an emergency Arrows Intellisys ControlsMain Menu Display ScreenCurrent Status items Current Status ScreenReady to Start Main MenuOperator Setpoints Operator Setpoints Default MIN MAX Step UnitCondensate Interval Selection MIN MAX OptionsScheduled start Sensor CalibrationClock Functions Alarm HistoryEnergy Status Messages Initial Check Alarms Service WarningsAlarm Main Menu AlarmsMaintenance Ultra Coolant Maintenance Procedures Prior to attempting any maintenance work, ensure that− Adding coolant Prior to starting Coolant level checking procedureSeparator element checking procedure Coolant filter change procedureSeparator element change procedure Drain sequence for N250/300H−2SScavenge screen clean/check procedure Separator element change procedure for N250/ 300H−2SStart the compressor and check for leaks and coolant level Separator tank / Pressure systemAir filter change procedure N250/300H−2S Air filter change procedureAircooled Cooler Cleaning Blower motor Re−GreaseN50/100H N37/75K High Airend Temperature Sensor checking procedure Watercooled Cooler CleaningCoolant Coolers AftercoolerMotor cowl cleaning N75−160 units only Blower / fan Motor Bearing Maintenance Stored unitsDrive Box Filter Removal / Replacement Moisture Separator Check / CleaningCoolant Sampling Procedure No Loss Drain Trap where fitted Check / CleaningFluid and Vibration Monitoring General Faults Fault FindingSymptom Fault Remedy Compressor will not No power supply to packageCheck and modify settings With correct coolant Or not sealing correctlyWith coolant’ See aboveRemove blockage, repair or replace damaged Pressure transducer Fault Cause RemedyFault Cause Action Drive FaultsIndicated on the INTELhYS Controller