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Large Dehumidifying Dryers v
Setting the Process Air Temperature ..................................................................29
Restoring the Process Air Temperature Controller (E5CN) to Factory Settings..29
Process Air Dew Point Display............................................................................32
Setting the High Dew Point Alarm .......................................................................32
Restoring the Process Air Dew Point Meter (E5CK) to Factory Setup................32
Redundant Safety Controller Display ..................................................................33
Setting the Redundant Safety Controller.............................................................33
Restoring the WATLOW Redundant Safety Controller to Factory Setup ............33
CHAPTER 5: OPERATION....................................................... 35
5-1 Initial Start-up ............................................................................................................ 35
Pre-Startup Checks .............................................................................................35
Auto-Tuning the Dryer .........................................................................................35
Shutting Down the Dryer .....................................................................................35
5-2 Dryer Operation Procedures .....................................................................................36
Controller Operation (Without Optional Alarm Horn & Reset Button).................36
5-3 Alarm Display Messages...........................................................................................39
5-4 Auto-Tuning the Dryer ...............................................................................................40
5-5 Shutting Down the Dryer ...........................................................................................40
CHAPTER 6: MAINTENANCE ................................................. 41
6-1 Maintenance Schedule.............................................................................................. 41
6-2 Preventative Maintenance.........................................................................................42
Cleaning or Replacing the Process Air Filters.....................................................42
Cleaning or Replacing the Regeneration Filter....................................................43
Calibrating the Dirty Filter Alarm..........................................................................43
Checking the Dewpoint Control System..............................................................44
6-3 Corrective Maintenance ............................................................................................ 45
Symptoms of Worn Out Desiccant ......................................................................45
Replacing the Desiccant......................................................................................45
Replacing the Process Heater (Electric Dryers)..................................................46
Replacing the Regeneration Heater (Electric Dryers) .........................................47
CHAPTER 7: TROUBLESHOOTING ....................................... 49
7-1 Introduction................................................................................................................ 49
7-2 Basic Troubleshooting............................................................................................... 49
7-3 Alarms .......................................................................................................................51
7-4 Alarm Descriptions ....................................................................................................51
7-5 Determining Temperature Controller Errors or Sensor Errors................................... 52
Using a Thermocouple ........................................................................................52
Using a Platinum Resistance Thermometer........................................................52
CHAPTER 8: APPENDIX.......................................................... 53
8-1 Warranty.................................................................................................................... 53
8-2 Technical Specifications............................................................................................ 54
Annex B Information............................................................................................54
Aftercooler Design Specifications........................................................................54
8-3 Drawings and Diagrams ............................................................................................55
8-4 Spare Parts List......................................................................................................... 57