Preventative Maintenance | Sterling SDA 1000-5100 specification

6-2 Preventative Maintenance

Cleaning or Replacing the Process Air Filters

Regular filter cleaning will keep your dryer operating at peak efficiency. The process air filters protect the centrifugal blowers from plastic fines being drawn in from the drying hopper. Filters should be cleaned when airflow restriction trips the dirty filter alarm. Filters should be replaced at least once a year.

Caution! Operating the dryer without the process air filters installed will void the warranty.

On 600-1500 cfm dryers, there is a single high-temperature (up to 350ºF) filter mounted above the process blower on the rear of the dryer. On 2000-3000 cfm dryers, there are two high-temperature (up to 350ºF) filters located in the housing under the blower platform on the left rear corner of the dryer.

Vacuuming. Vacuum cleaning is the preferred method for cleaning the process air filters because compressed air or high-pressure washing can damage the filter. Vacuuming removes most large particles and surface contaminant. Use a commercial duty vacuum cleaner and vacuum the filter from the air intake (dirty) side only.

Compressed Air Cleaning. Blow clean, dry compressed air up and down the pleats, blowing out the filter from the clean side. Do not shoot the air in a criss-cross motion against the grain of the pleats—this won’t clean the filter, and it may damage it. Compressed air should be less than 100 psi—use a 1/8 diameter nozzle at least 2 inches away from the filter.

Figure 16: Process Filter Housing
Stainless Steel		High
Filter Housing	Temeprature
		Gasket
High			High
Temperature			Temperature
Cartridge Filter			Cartridge Filter
	Stainless Steel
Stainless Steel		Filter Housing
Stainless Steel
Filter Housing
Cover	Filter Housing	Filter Housing
	Cover Latches	Cover Latches
High
Temeprature		High
Gasket		Temeprature
		Gasket	Stainless Steel
			Filter Housing
			Cover
600-1500 cfm dryers			2000-3000 cfm dryers

Large Dehumidifying Dryers

Maintenance

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Image 42

Sterling SDA 1000-5100 specifications Preventative Maintenance, Cleaning or Replacing the Process Air Filters

Contents

SDA Large Dehumidifying Dryers With AP0 Controls Event of Shipping Damage Shipping InfoUnpacking and Inspection If the Shipment is Not Complete Warranty Returns ReturnsCredit Returns Table of Contents Operation Dryer Identification Serial Number Tag Technical Assistance Safety How to Use This ManualSafety Symbols Used in this Manual Dryer Safety Tags Description Wear Safety Glasses and Work Gloves Responsibility General ResponsibilityOperator Responsibility Maintenance Responsibility Reporting a Safety Defect Functional Description Models Covered in This ManualGeneral Description Process/Regeneration Cycle Regeneration Cycle Sequence of Operation Controller Description Controller Screen Descriptions Standard Features Mechanical FeaturesElectrical Features Options Closed-Loop RegenerationProcess Aftercooler Recommended Temperature Settings Process Air Dust CollectorMaterial Overdrying Protection Mechanical Options Electrical Options Safety Device Lock-Outs Safety Devices and InterlocksSafety Circuit Standards Fail Safe OperationPage Rigging and Placing Unit Mechanical InstallationUncrating the Equipment Making Electrical Connections Checking for Proper Blower Rotation Checking Blower Rotation Making Dryer/Drying Hopper Process Air Connections Dryer/Drying Hopper Process Air Connections Connecting Aftercooler/Precooler Cooling Water Optional Aftercooler Components & Flow Rates Using the Drying Hopper Air Trap Drying Hopper Air Trap Process Air Temperature Controller SwitchesIndicator Lights Controls 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 E5CN Operating Parameters Adjustment Level Indicator Name Description Tuned prior to dryer startup Entering Operating Parameters to Select Modes ON, OFF Setting the High Dew Point Alarm Process Air Dew Point DisplayOptional Redundant Safety Controller Display Setting the Redundant Safety ControllerWatlow Operating Parameters Manf. setting Initial Start-up Auto-Tuning the DryerOperation Pre-Startup Checks Dryer Operation Procedures Page Material Miser OFF Press + to Enable Alarm Display Messages Auto-Tuning the Dryer Shutting Down the Dryer Maintenance Maintenance SchedulePhotocopy this page for your maintenance records Preventative Maintenance Cleaning or Replacing the Process Air Filters Cleaning or Replacing the Regeneration Filter Calibrating the Dirty Filter Alarm Checking the Dewpoint Control System Corrective Maintenance Symptoms of Worn Out DesiccantReplacing the Desiccant Desiccant Tower Assembly Replacing the Process Heater Electric Dryers Process Heater Box Assembly Replacing the Regeneration Heater Electric Dryers Regeneration Heater Box Assembly Troubleshooting Basic TroubleshootingIntroduction Large Dehumidifying Dryers Troubleshooting Alarms Alarm DescriptionsAlarm Alarm Description Alarm Effect Code Determining Temperature Controller Errors or Sensor Errors Using a ThermocoupleUsing a Platinum Resistance Thermometer Warranty Appendix Technical Specifications Aftercooler Design SpecificationsAnnex B Information Drawings and Diagrams Optional dryer dust collector Spare Parts List Level 3 Mechanical Components Dryer Identification Serial Number Tag Located on back of Dryer Parts and Service Department Parts Department Service DepartmentTechnical Assistance Sales Department