Preventative Maintenance | Sterling SDA Series 25-100 15 cfm

5-2 Preventative Maintenance

This section describes maintenance procedures which will increase the longevity and efficiency of your dehumidifying dryer. Perform them at the regular intervals listed on the dryer checklist on the previous page.

Servicing Process Air Filters

Caution! Operating the dryer without the process air filter installed voids your warranty!

Filter cleaning is an important part of your dryer maintenance program.

Dehumidifying dryers have a single cartridge canister-type filter in the process air loop. The filter protects blowers from plastic fines drawn in from the drying hopper and prevents the desiccant from being contaminated. Regular filter cleaning is essential to keep your dryer operating at peak efficiency.

You can blow or vacuum the dirt out of the filter with compressed air, but remember, it could become damaged from high-pressure blowing.

Recommendations for Cleaning and Replacing Filters

•Turn off and/or lock out electrical power to the dryer.

•Remove the threaded fastener securing the filter access cover, then remove the cover.

•Remove the nut on the center retaining rod to remove the filter cartridge.

Figure 9: Air Filter Location and Disassembly

Air In

Air Out

Filter Housing

Clamp	Thumb Nut

	Filter	Dust Can
	Cartridge	Dust Can
	Cartridge

Vacuuming

Try vacuum-cleaning a soiled filter first. Vacuuming removes most large particles and surface contaminants, and may suffice for the first time you clean a filter. Use a commercial- duty (recommended) or household vacuum cleaner. Vacuum the filter from the air intake (dirty) side only.

15, 30, & 60 cfm Compact Dryers

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Sterling SDA Series 25-100 15 cfm, 60 cfm, 30 cfm Preventative Maintenance, Servicing Process Air Filters, Vacuuming

Contents

SDA Series 15, 30, & 60 cfm Compact Dehumidifying Dryers Event of Shipping Damage Shipping InformationUnpacking and Inspection If the Shipment is Not Complete Table of Contents Maintenance Safety How to Use This ManualSafety Symbols Used in this Manual Safety Tag Information Wear Safety Glasses and Work Gloves Responsibility General ResponsibilityOperator Responsibility Remember Maintenance Responsibility Reporting a Safety Defect Functional Description Models Covered in This ManualGeneral Description Standard Features Mechanical FeaturesElectrical Features Safety Devices and Interlocks Controller FeaturesOptions Safety Circuit Standards Safety Device Lock-OutsFail Safe Operation Installation Uncrating the EquipmentRigging and Placing the Dryer Suggested Lift Rigging for Cart Mount Dryers Electrical Connections Suggested Lift Rigging for Machine Mounted Dryers Setup Procedures Checking for Proper Blower Rotation Three-Phase Models Drying Hopper Air Trap Considerations Installing Water LinesInitial Start-up Optional Aftercooler Auto-Tuning the Dryer Shutting Down the Dryer Operation SwitchesIndicator Lights Controller Description and Operation Process Air Temperature Controller Indicator Name Description Lit when Control Output 1 is on. The Out1Lit when Control Output 2 is on. Not used Lights in the Operation Indicator Section when Setting the Process Air Temperature Adjustment Level Indicator Name DescriptionE5CN Operating Parameters Entering Operating Parameters to Select Modes Setting the High Dew Point Alarm Process Air Dew Point DisplayOptional Dryer Operation Procedures Controller Operation Alarm Display Messages High Temp Valve MTR Maintenance Preventative Maintenance Schedule Servicing Process Air Filters Preventative MaintenanceRecommendations for Cleaning and Replacing Filters Vacuuming Symptoms of Worn Desiccant Corrective MaintenanceCleaning with Compressed Air Servicing the Dew Point Monitor + First AID + Replacing Worn Desiccant Desiccant Bed Location and Disassembly Procedures Replacing the Process/Regeneration Heater Replacing/Cleaning the Cooling Coil Replacement ProceduresPage Troubleshooting Introduction Proc Blwr Determining Temperature Controller Errors or Sensor Errors Using a Thermocouple Technical Specifications Appendix Drawings and Diagrams Aftercooler Design Specifications High Heat Model 180F to 400F Air Flow Schematic Spare Parts List Level 1 Spare Parts List Electrical & Mechanical HI-CORE Desiccant Dryer 15/30/60 CFM Units 30 CFM 60 CFM 120V Control Common Parts 220V Control Common Parts Returned Material Policy Dryer Identification Serial Number Tag Parts Department Service DepartmentTechnical Assistance Sales Department