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 Technical Specifications............................................................................................53
Annex B Information............................................................................................53
Aftercooler Design Specifications........................................................................53
8-2 Drawings and Diagrams............................................................................................ 54
8-3 Spare Parts List.........................................................................................................56
8-4 8-5 Dryer Identification (Serial Number) Tag.............................................................57