Maintenance | Sterling SDAA 25-100 guide

	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
Dehumidifying Dryers		iii

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Sterling SDAA 25-100 specifications Maintenance

Contents

Sdaa 25-100 15-60 cfm Dehumidifying Dryers Shipping Information Table of Contents Maintenance Service Department Sales Department Contract Department How to Use This Manual SafetySafety Symbols Used in this Manual Wear Safety Glasses and Work Gloves Responsibility General Responsibility Operator Responsibility Remember Maintenance Responsibility Reporting a Safety Defect Dehumidifying Dryers Safety Models Covered in This Manual Functional DescriptionGeneral Description Standard Features What is desiccant?Mechanical Features Electrical Features Controller Features Safety Devices and InterlocksOptions Safety Device Lock-Outs Safety Circuit StandardsFail Safe Operation Uncrating the Equipment InstallationRigging and Placing the Dryer Machine-Mount Dryer Dimensions Floor-Mount Dryer Dimensions Suggested Lift Rigging for Cart Mounted Dryers Recommended Dryer Lifting Hardware Electrical Connections Suggested Lift Rigging for Machine Mounted Dryers Setup Procedures Three-Phase ModelsChecking for Proper Blower Rotation Making Dryer/Drying Hopper Process Air Connections Drying Hopper Air Trap Considerations Installing Water Lines Hose and Hose ClampOptional Aftercooler Auto-Tuning the Dryer Initial Start-upPre-Startup Checks Starting Up the Dryer Shutting Down the Dryer Operation Start-up Indicator Lights SwitchesController Description and Operation Lit when Control Output 1 is on. The Out1 Process Air Temperature ControllerLit when Control Output 2 is on. Not used Indicator Name Description Lights in the Operation Indicator Section whenIdentifying Temperature Controller Keys Setting the Process Air Temperature E5CN Operating Parameters Adjustment Level Indicator Name Description Tuned prior to dryer startup Entering Operating Parameters to Select Modes ON, OFF Process Air Dew Point Display Setting the High Dew Point AlarmOptional Setting the Redundant Safety Controller Redundant Safety Controller DisplayWatlow Operating Parameters Mode Parameter Setting range Default Manf. setting Dryer Operation Procedures Model Heating Cooling 15 cfm 30 cfm 60 cfm Page Controller Operation With Optional Alarm Horn & Reset Button Page Alarm Display Messages Auto-Tuning the Dryer Shutting Down the Dryer Preventative Maintenance Schedule MaintenancePhotocopy this page for your maintenance records Preventative Maintenance Recommendations for Cleaning and Replacing FiltersServicing Process Air Filters Vacuuming Cleaning with Compressed Air Servicing the Dew Point Monitor Corrective Maintenance Symptoms of Worn Desiccant First AID Replacing Worn Desiccant Consult local disposal regulations for more information Procedures Replacing the Process Heater Problem Possible cause Corrective action TroubleshootingIntroduction Problem Possible cause Corrective action Check resin manufacturer’s data Using a Thermocouple Determining Temperature Controller Errors or Sensor ErrorsUsing a Platinum Resistance Thermometer Warranty Warranty SpecificationsWarranty Restrictions Appendix Optional Components Warranty LiabilitiesCustomer Responsibilities Technical Specifications Annex B Information Drawings and Diagrams Spare Parts List Aftercooler Design Specifications Level 2 & 3 Spare Parts List Electrical & Mechanical Safety Tag Information Warranty ReturnsDryer Safety Tags Returned Material Policy Dryer Identification Serial Number Tag Located on back of Dryer Service Department Technical AssistanceParts Department Sales Department