Desiccant Tower Assembly | Sterling SDA AP-1 instruction

6.Inspect the gaskets on each of the covers. Replace if necessary.

7.Re-install the covers.

Figure 14: Desiccant Tower Assembly

Regeneration

Heater Cover.

Heater Element

Mounting Plate.

Viewing Glass, for

checking the status of the desiccant inside.

High

Temperature

Gaskets.

Stainless Steel

Hollow Core

Desiccant Tank

High

Temperature

Gaskets.

Regeneration

Heaters

Access cover can be removed in order to replace desiccant.

Desiccant Tank

Mounting

Platform

Figure 15: Desiccant Replacement Amounts

Dryer	Desiccant Required per Tower
CFM	“13 X”, 8 x 12 Bead	Total
600	175	350
850	175	350
1000	300	600
1250	300	600
1500	300	600
2000	300	1200
2500	300	1200
3000	300	1200

Replacing the Process Heater (Electric Dryers)

Large Dryers have a number of single phase Calrod-type heater elements wired in a delta formation. They are mounted on top of the dryer or to the drying hopper. The number and wattage of the heaters varies with model, voltage, temperature range, etc., but the replacement procedure is the same.

DANGER! Disconnect and lock out power before heater replacement.

Large Dehumidifying Dryers

Maintenance

61

Image 61

Sterling SDA AP-1 specifications Desiccant Tower Assembly, Replacing the Process Heater Electric Dryers

Contents

SDA Large AP-1 Control Dehumidifying Dryer Unpacking and Inspection Shipping InfoEvent of Shipping Damage If the Shipment is Not Complete Returns Table of Contents Operation Troubleshooting How to Use This Manual SafetySafety Symbols Used in this Manual Dryer Safety Tags Description General Responsibility ResponsibilityOperator Responsibility Maintenance Responsibility Reporting a Safety Defect Models Covered in This Manual Functional DescriptionGeneral Description Sequence of Operation Process/Regeneration Cycle Auto Start Timer Standard FeaturesMechanical Features Electrical Features Dewpoint Extend OptionsClosed-Loop Regeneration Drawings and Diagrams Optional dryer dust collector Process Aftercooler Aftercooler Design SpecificationsProcess Air Dust Collector Process Air Dust Collector Material Overdrying Protection Recommended Temperature Settings Electrical Options Mechanical OptionsController Options Safety Circuit Standards Safety Devices and InterlocksSafety Device Lock-Outs Fail Safe OperationPage Mechanical Options Denotes availability Dimensions and Specifications Denotes availability Denotes availability Uncrating the Equipment Mechanical InstallationRigging and Placing Unit Making Electrical Connections Description Making Gas Line Connections Gas-Fired Models Only Checking Blower Rotation Checking for Proper Blower Rotation Dryer/Drying Hopper Process Air Connections Making Dryer/Drying Hopper Process Air Connections Process Air Heater on Drying Hopper Large Dehumidifying Dryers Mechanical Installation Aftercooler Components & Flow Rates Connecting Aftercooler/Precooler Cooling Water Optional Drying Hopper Air Trap Using the Drying Hopper Air Trap Controller Description Controls Dryer Status Screen Startup Screen Process Air Temperature and Conveying Process Controller Identifying Controller Screens Dryer Alarms Help System LOG OFFMain Menu Screen Setting Values Dryer Menu Dryer Status Dryer Setup Over DRY Protect Alarms Auto TuneAuto Start Main Menu Dryer Setup Screen 3 Dryer Setup Screen 2Dryer Setup Screen 4 Overdry Protection Screen 1 Overdry ProtectionOverdry Protection Screen 2 Autotune Alarm History ScreenProcess AutoTune Screen Dew Point Setup Screen DEW Point SetupAutostart Timer Screen Auto Start Help Menu System Setup SET Clock Hour Meters Alarm History StatusHelp Menu Screen System Menu System Setup Screen System Backup Service Menu Main Menu System SetupLOW Level Detection Setup Autostart Clock Screen Clock Menu Screen Input Status Hour Meter ScreenInput Status Screen Output Status Service System Backup ScreenService Menu Screen Alarm Screens Alarm Screen Example Redundant Safety Controller Display Always put your set point to 30F above set point Setting the Redundant Safety Controller Large Dehumidifying Dryers Controls Start-up Operation Using the Dryer Status Screen Alarm Descriptions Alarms Shutdown Maintenance Schedule MaintenancePhotocopy this page for your maintenance records Cleaning or Replacing the Process Air Filters Preventative Maintenance Calibrating the Dirty Filter Alarm Cleaning or Replacing the Regeneration Filter Checking the Dewpoint Control System Symptoms of Worn Out Desiccant Corrective MaintenanceReplacing the Desiccant Replacing the Process Heater Electric Dryers Desiccant Tower Assembly Replacing the Regeneration Heater Electric Dryers Process Heater Box Assembly Regeneration Heater Box Assembly Basic Troubleshooting TroubleshootingIntroduction Large Dehumidifying Dryers Troubleshooting Using a Thermocouple Determining Temperature Controller Errors or Sensor ErrorsUsing a Platinum Resistance Thermometer Appendix Warranty ReturnsReturned Material Policy Credit Returns Annex B Information Technical Specifications Spare Parts List Level 3 Mechanical Components Located on back of Dryer Dryer Identification Serial Number Tag Technical Assistance Service DepartmentParts Department Sales Department