Deltech Fitness LS60, LS2580 instruction manual Calculation of Purge Pressure Setting

Page 67

HYDROBLOC LS SERIES

PURGE CURVES

Calculation of Purge Pressure Setting

1.Determine air pressure (psig) at the dryer inlet.

2.Refer to Table A-1. Determine the inlet airflow for your model and inlet air pressure.

3.To calculate purge flow consumption on the critical orifice curve:

Inlet Flow (SCFM) × 14.7 PSIG

× 1.15 = Purge (SCFM)

Inlet Pressure (PSIG) + 14.7 PSIG

4.Locate the Critical Orifice Calibration Curve that has been sized for your specific dryer model.

5.Cross the Purge Flow requirement calculated above to the same number on the Critical Orifice Calibration Curve. Follow this line vertically and then horizontally once intersection is made with the curve line to find the actual purge pressure setting.

6.Locate the Purge Adjusting Valve. Slowly rotate dryer’s Purge Adjusting Valve until the Purge Pres- sure Indicator indicates the calculated purge pressure setting. (See following Note).

Note: The purge pressure can only be read and ad- justed when an off-line desiccant chamber has de- pressurized for regeneration. (When the off-line cham- ber is pressurized, the Purge Pressure Indicator will read “system pressure”.)

Table A - 1 Inlet Airflow at Various Inlet Air Pressures¹

 

 

 

 

 

Inlet Air Pressure (psig)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

60

70

80

90

 

100

110

 

120

130

140

150

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Average Inlet Airflow (scfm)²

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LS60

39

44

50

55

 

60

65

 

70

76

81

86

LS110

72

81

91

100

 

110

120

 

129

139

148

158

LS130

85

96

107

119

 

130

141

 

153

164

175

187

LS185

120

137

153

169

 

185

201

 

217

233

250

266

LS240

156

177

198

219

 

240

261

 

282

303

324

345

 

 

 

 

 

 

 

 

 

 

 

 

 

LS270

176

199

223

246

 

270

294

 

317

341

364

388

LS360

234

266

297

329

 

360

391

 

423

454

486

517

LS505

329

373

417

461

 

505

549

 

593

637

681

725

LS630

410

465

520

575

 

630

685

 

740

795

850

905

LS760

495

561

627

694

 

760

826

 

893

959

1025

1091

 

 

 

 

 

 

 

 

 

 

 

 

 

LS1000

651

738

826

913

 

1000

1087

 

1174

1262

1349

1436

LS1250

814

923

1032

1141

 

1250

1359

 

1468

1577

1686

1795

LS1500

977

1108

1238

1369

 

1500

1631

 

1762

1892

2023

2154

LS2070

1348

1529

1709

1890

 

2070

2250

 

2431

2611

2792

2972

LS2580

1680

1905

2130

2355

 

2580

2805

 

3030

3255

3480

3705

 

 

 

 

 

 

 

 

 

 

 

 

 

¹ Maximum inlet air pressure, 150 psig.

²Based on 100°F inlet air temperature and -40°F pressure dew point. Maximum recommended inlet temperature, 120°F. For capacity at inlet temperature higher than 100°F, consult your local distributor.

Purge Curves

A - 3

Image 67
Contents Hydrobloc LS Series Heatless Compressed AIR Dryer Page Contents Section Maintenance and Repair Scfm Hydrobloc LS Series SpecificationsModel Prefilter Afterfilter Dryer Prefilter AssemblyForeword General System InformationAutomatic Drain Valves Afterfilter AssemblyEquipment Handling Receiving and InspectionMechanical Set-Up Not USE Plug or Gate Valves General Piping InformationPurge Exhaust Restrictor Electrical ConnectionPurge Exhaust Muffler Static Sensitive Devices Equipment Check Remote Alarm ConnectionInstrumentation Chamber Pressure Gauges Valve Switching Failure Option a & BPurge Flow Indicator Moisture Indicator Option a & BPage Automatic Drain Valve How It WorksOperation Dryer Models LS60 through LS1000 Initial Start-Up For Dryers With DEC ControllerDryer Models LS1250 and LS1500 Dryer Models LS2070 and LS2580 Operation Models LS60 through LS1000 only Normal Start-Up or Restart For Dryers With DEC ControllerDryer Models LS1250 and LS1500 Dryer Shutdown Normal Operational ChecksOperation Preventative Maintenance Schedule Maintenance and RepairAnnually Desiccant Charging ProceduresFor Dryer Models LS60 through LS1500 Filter Element ReplacementFor Dryer Models LS2070 and LS2580 Servicing The Internal Float Drain Valve If Equipped Automatic Drain Valve Components Automatic Drain Valve Disassembly and ServicingMaintenance and Repair Moisture Indicator Recharging Procedure LS60 through LS760 Inlet and Purge Exhaust Switching Valve MaintenanceInlet and Purge Exhaust Switching Valve LS1000 LS1000 Models LS1250 and LS1500 3 Inlet Switching Valve MaintenanceLS1250, LS1500 Model LS1250 only 10 2 Purge Exhaust Switching Valve MaintenanceLS1250 Model LS1500 only 11 3 Purge Exhaust Switching Valve MaintenancePurge Exhaust Switching Valve Models LS60 through LS760 Purge and Outlet Check Valve Maintenance13 11 Models LS1000 through LS1500 13 3 Purge and Outlet Check Valve MaintenanceMaintenance and Repair 4 Remote Flow Restrictor Maintenance Models LS1500 through LS2580 Flow Restrictor MaintenanceActuator Subassembly Shaft Subassembly Models LS2070 and LS2580 Purge Adjusting ValvePilot Gas Filter Maintenance Page Troubleshooting Guide Shutdown and Depressurize Dryer. Inspect desiccant Shutdown and Depressurize Dryer. Refer to the Purge Shutdown and Depressurize Dryer. Refer to the Inlet SwitchDe-energize Dryer Power Supply. Check power supply input De-energize Dryer Power Supply. Replace fuse if blown,Shutdown and Depressurize Dryer. Drain desiccant from Shutdown and Depressurize Dryer. Replace damaged, faultyEquately supported. Failure to do so may result For Models LS1500 through LS2580Removal of the Flow restrictor should not be done un Less the piping to the Purge Exhaust Muffler is adNot lit, Shutdown and Depressurize Dryer. Provide a During Repressurization CycleShutdown and Depressurize Dryer. Replace pressure sen PROBLEM/POSSIBLE Cause If voltage is present. De-energize Dryer Power Supply. Re Shutdown and Depressurize Dryer. Disassemble, cleanPROBLEM/POSSIBLE Cause Checks and Remedy Page Appendix a Purge Curves Table a 1 Inlet Airflow at Various Inlet Air Pressures¹ Calculation of Purge Pressure SettingOrifice Dia Gas Air Temp 100F Figure A.2 Critical Orifice Calibration Curve Figure A.3 Critical Orifice Calibration Curve Figure A.4 Critical Orifice Calibration Curve Figure A.5 Critical Orifice Calibration Curve Figure A.6 Critical Orifice Calibration Curve Figure A.7 Critical Orifice Calibration Curve Psig Pressure Purge Figure A.9 Critical Orifice Calibration Curve Purge Pressure P1 Psig Figure A.11 Critical Orifice Calibration Curve Figure A.12 Critical Orifice Calibration Curve Figure A.13 Critical Orifice Calibration Curve Appendix B Hydrobloc LS Replacement Parts 1276865 1275442 Appendix C Page Hydrobloc LSC Specifications Model Prefilter Afterfilter Table C 1 Inlet Airflow at Various Inlet Air Pressures¹ Hydrobloc LSC Purge CurvesFigure C.1 Critical Orifice Calibration Curve Figure C.2 Critical Orifice Calibration Curve Figure C.3 Critical Orifice Calibration Curve Figure C.4 Critical Orifice Calibration Curve Figure C.5 Critical Orifice Calibration Curve Figure C.6 Critical Orifice Calibration Curve Figure C.7 Critical Orifice Calibration Curve Figure C.8 Critical Orifice Calibration Curve Figure C.9 Critical Orifice Calibration Curve Figure C.10 Critical Orifice Calibration Curve Figure C.11 Critical Orifice Calibration Curve Figure C.12 Critical Orifice Calibration Curve Figure C.13 Critical Orifice Calibration Curve Hydrobloc LSC Replacement Parts 1198157 1218635 1200806 1180918 1218638 Description Quantity Model Page Page Deltech

LS60, LS2580 specifications

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