Watts Aerco SmartPlate EV, Installation, Operation & Maintenance Manual

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SmartPlate EV Installation, Operation and Maintenance Manual
CONTENTS
OMM-0147_C
• SP-102 • 3/2/2021 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
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6.6 SENSOR CHECKS ................................................................................................................................ 39
6.7 PERIODIC CLEANING OF HEAT EXCHANGER ...................................................................................... 40
TROUBLESHOOTING ......................................................................................41
7.1 INTRODUCTION ................................................................................................................................. 41
7.2 TROUBLESHOOTING PROCEDURES ................................................................................................... 41
CORRECTIVE MAINTENANCE ........................................................................47
8.1 INTRODUCTION ................................................................................................................................. 47
8.2 CORRECTIVE MAINTENANCE ............................................................................................................. 47
8.2.1 HEAT EXCHANGER MAINTENANCE ............................................................................................ 47
8.2.1.1 HEAT EXCHANGER CLEANING AND DE-SCALING ................................................................. 48
8.2.1.2 HEAT EXCHANGER REPLACEMENT ....................................................................................... 48
8.2.2
CONTROL VALVE ACTUATOR REPLACEMENT AND VALVE REMOVAL ........................................ 50
8.2.2.1 3-Way Control Valve Replacement ...................................................................................... 50
8.2.3 STRAINERS .................................................................................................................................. 52
8.3 Electronic Control System (ECS II) ..................................................................................................... 53
8.3.1 CONTROL BOX ASSEMBLY COMPONENTS ................................................................................. 53
8.3.2
TEMPERATURE CONTROLLER REPLACEMENT ............................................................................ 53
8.3.3
OVER-TEMPERATURE SWITCH REPLACEMENT .......................................................................... 54
APPENDIX A – Modbus Control and Communication .............................................................................. 55
APPENDIX B – SCHEMATIC ....................................................................................................................... 63
APPENDIX C – SmartPlate EV PART LISTS ................................................................................................ 65
APPENDIX D – RECOMMENDED SPARE PARTS ........................................................................................ 70