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Dehumidifying Dryers iii
Restoring the Process Air Temperature Controller (E5CN) to Factory Settings..28
Process Air Dew Point Display............................................................................31
Setting the High Dew Point Alarm .......................................................................31
Restoring the Process Air Dew Point Meter (E5CK) to Factory Setup................31
Redundant Safety Controller Display ..................................................................32
Setting the Redundant Safety Controller.............................................................32
Restoring the WATLOW Redundant Safety Controller to Factory Setup ............32
4-3 Dryer Operation Procedures .....................................................................................34
Controller Operation (Without Optional Alarm Horn & Reset Button).................34
Controller Operation (With Optional Alarm Horn & Reset Button).......................37
Alarm Display Messages.....................................................................................39
4-4 Auto-Tuning the Dryer...............................................................................................40
4-5 Shutting Down the Dryer ...........................................................................................40
CHAPTER 5: MAINTENANCE ................................................. 41
5-1 Preventative Maintenance Schedule.........................................................................41
5-2 Preventative Maintenance.........................................................................................42
Servicing Process Air Filters................................................................................42
Servicing the Dew Point Monitor .........................................................................43
5-3 Corrective Maintenance ............................................................................................44
Symptoms of Worn Desiccant .............................................................................44
Replacing Worn Desiccant ..................................................................................45
Replacing the Process Heater.............................................................................47
CHAPTER 6: TROUBLESHOOTING ....................................... 48
6-1 Introduction................................................................................................................48
6-2 Determining Temperature Controller Errors or Sensor Errors...................................51
Using a Thermocouple ........................................................................................51
Using a Platinum Resistance Thermometer........................................................51
CHAPTER 7: APPENDIX.......................................................... 52
7-1 Warranty....................................................................................................................52
Warranty Specifications.......................................................................................52
Warranty Restrictions ..........................................................................................52
Warranty Liabilities ..............................................................................................53
Customer Responsibilities...................................................................................53
7-2 Optional Components................................................................................................ 53
7-3 Technical Specifications............................................................................................ 54
Annex B Information............................................................................................54
Aftercooler Design Specifications........................................................................55
7-4 Drawings and Diagrams............................................................................................55
7-5 Spare Parts List......................................................................................................... 55
7-6 Returned Material Policy ...........................................................................................57
Credit Returns .....................................................................................................57
Warranty Returns ................................................................................................57
7-7 Safety Tag Information..............................................................................................57
Dryer Safety Tags ...............................................................................................57
7-8 Dryer Identification (Serial Number) Tag...................................................................58
7-9 Technical Assistance.................................................................................................59
Parts Department ................................................................................................59