AERCO Electronic Controls System (ECS) - Manual (Page 4)

Electronic Control System (ECS) and Type CXT-E Valve
TABLE OF CONTENTS
Page 4 of 82
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288 VD2: 02/28/14
OMM-0003_0D AC-105
6.2.1 Monthly Maintenance ......................................................................................................................... 35
6.2.2 Semi-Annual Maintenance: .................................................................................................................. 35
6.3 ELECTRONIC CONTROL SYSTEM (ECS) ROUTINE MAINTENANCE ...................................... 36
6.3.1 Quarterly Maintenance: ....................................................................................................................... 36
6.3.2 Annually: .............................................................................................................................................. 36
6.3.3 Temperature Sensors: .......................................................................................................................... 36
6.3.4 Flow Sensor: ......................................................................................................................................... 37
6.4 HEAT EXCHANGER ROUTINE MAINTENANCE CLEANING .................................................. 38
6.4.1 Pumping System Set-Up Instructions: .................................................................................................. 38
6.4.2 Cleaning Procedure: ............................................................................................................................. 39
6.4.3 Testing HydroSkrub Effectiveness ........................................................................................................ 40
6.4.4 Calcium Carbonate Spot Test: .............................................................................................................. 40
6.4.5 pH Trend Charting: ............................................................................................................................... 40
7. TROUBLESHOOTING ........................................................................................... 41
7.1 INTRODUCTION ................................................................................................................. 41
7.1.1 Electronic Control System (ECS) Preliminary Check: ............................................................................. 41
7.1.2 Electronic Control Valve, CXT-E Preliminary Check: ............................................................................. 41
7.2 TROUBLESHOOTING PROCEDURES ................................................................................... 41
8. CORRECTIVE MAINTENANCE ............................................................................ 47
8.1 INTRODUCTION ................................................................................................................. 47
8.2 PART 1 - CXT-E CONTROL VALVE CORRECTIVE MAINTENANCE ......................................... 47
8.2.1 Valve Shaft Seal Retainer Replacement: .............................................................................................. 47
8.2.2 Valve Disassembly ................................................................................................................................ 48
8.2.3 Valve Reassembly ................................................................................................................................ 50
8.2.4 Actuator Replacement ......................................................................................................................... 58
8.2.5 Linkage Assembly Replacement ........................................................................................................... 59
8.3 PART 2 - ECS CORRECTIVE MAINTENANCE ........................................................................ 61
8.3.1 Control Box Assembly and Components .............................................................................................. 61
8.3.2 Control Box Assembly Replacement ..................................................................................................... 62
8.3.3 Temperature Controller Replacement ................................................................................................. 62
8.3.4 Over-Temperature Switch and Temperature Indicator Replacement .................................................. 63
8.3.5 DC Power Supply Replacement ............................................................................................................ 64
8.3.6 DC Voltage Regulator Replacement ..................................................................................................... 65
9. RECOMMENDED SPARE PARTS ........................................................................ 73
9.1 CXT-E CONTROL VALVE RECOMMENDED SPARE PARTS ................................................... 73
9.2 ELECTRONIC CONTROL SYSTEM RECOMMENDED SPARE PARTS ...................................... 73
APPENDIX A ................................................................................................................ 75
9.3 PROCESS ALARMS: ............................................................................................................ 76
9.4 E
UROTHERM
2408 P
ROCESS
A
LARMS
........................................................................................ 76
9.5 DIAGNOSTIC ALARMS ........................................................................................................ 76
9.6 E
UROTHERM
2408 D
IAGNOSTIC
A
LARMS
................................................................................... 76
9.6.1 Clearing Hardware Error (Hw.Er) Display............................................................................................. 77
APPENDIX B ................................................................................................................ 79