Process Heater Box Assembly | Sterling SDA 1000-5100 specification

1.Remove the bolts securing the process heater access cover.

2.Sketch the heater wiring configuration so the heaters may be re-wired properly. Heaters are mounted on a common plate of three or six for easy maintenance.

3.Remove the jumper bars and wires for the heater plate assembly(ies) being removed or replaced.

4.Remove the bolts securing the heater plate assembly and slide out the assembly. Avoid damaging the gaskets.

5.Remove individual heaters for replacement by removing the large brass nuts and washers.

6.Re-install the heaters and heater plate assemblies in reverse order, replacing gaskets if necessary.

Caution! Heater loops should not touch each other. "Hot spots" will lead to premature heater failure.

7.Re-install the jumper wires and bars according to the sketch made earlier.

8.Re-secure the process heater access cover.

Figure 19: Process Heater Box Assembly			Stainless Steel
			Heater Housing
	High		Cover
	Temperature	Heater Elements
	Gasket	Heater Elements
	Gasket	Double Wall
		Double Wall
		Stainless Steel
		Heater
Heater Elements		Housing
		High
Heater Element		Temperature
Mounting Plate		Gasket
		Heater Element
		Mounting Plate
	Double Wall
	Stainless Steel
	Heater
	Housing
	High
	Temperature
Heater Assembly	Gasket
Gude Bars			Heater Assembly
Stainless Steel			Gude Bars
Stainless Steel
Heater Housing
Cover
Hex Nut For	Heater Element
Securing the Heater	Mounting Hex Nut
Wire	High Temperature	Heater Element
	High Temperature	Heater Element
Washer	Washer / Gasket
Heater Wire with
Crimped on Closed
Loop Connector
Heater Mounting	Heater Element	Heater Assembly
Heater Mounting	Bulkhead Fitting	Guide Bar
Plate

Replacing the Regeneration Heater (Electric Dryers)

The regeneration heaters are wired in the delta formation, mounted in the core of the descant tanks.

DANGER! Disconnect and lock out power before heater replacement.

Large Dehumidifying Dryers

Maintenance

47

Image 47

Sterling SDA 1000-5100 specifications Process Heater Box Assembly, Replacing the Regeneration Heater Electric Dryers

Contents

SDA Large Dehumidifying Dryers With AP0 Controls If the Shipment is Not Complete Shipping InfoUnpacking and Inspection Event of Shipping Damage Credit Returns Warranty ReturnsReturns Table of Contents Operation Dryer Identification Serial Number Tag Technical Assistance Safety Symbols Used in this Manual SafetyHow to Use This Manual Wear Safety Glasses and Work Gloves Dryer Safety Tags Description Operator Responsibility ResponsibilityGeneral Responsibility Maintenance Responsibility Reporting a Safety Defect General Description Functional DescriptionModels Covered in This Manual Regeneration Cycle Process/Regeneration Cycle Sequence of Operation Controller Screen Descriptions Controller Description Electrical Features Standard FeaturesMechanical Features Process Aftercooler OptionsClosed-Loop Regeneration Material Overdrying Protection Recommended Temperature SettingsProcess Air Dust Collector Electrical Options Mechanical Options Fail Safe Operation Safety Devices and InterlocksSafety Circuit Standards Safety Device Lock-OutsPage Making Electrical Connections Mechanical InstallationUncrating the Equipment Rigging and Placing Unit Checking Blower Rotation Checking for Proper Blower Rotation Dryer/Drying Hopper Process Air Connections Making Dryer/Drying Hopper Process Air Connections Aftercooler Components & Flow Rates Connecting Aftercooler/Precooler Cooling Water Optional Drying Hopper Air Trap Using the Drying Hopper Air Trap Controls SwitchesIndicator Lights Process Air Temperature Controller Lights in the Operation Indicator Section when Lit when Control Output 1 is on. The Out1Lit when Control Output 2 is on. Not used Indicator Name Description E5CN Operating Parameters Setting the Process Air Temperature Tuned prior to dryer startup Adjustment Level Indicator Name Description ON, OFF Entering Operating Parameters to Select Modes Optional Setting the High Dew Point AlarmProcess Air Dew Point Display Watlow Operating Parameters Redundant Safety Controller DisplaySetting the Redundant Safety Controller Manf. setting Pre-Startup Checks Auto-Tuning the DryerOperation Initial Start-up Dryer Operation Procedures Page Material Miser OFF Press + to Enable Alarm Display Messages Shutting Down the Dryer Auto-Tuning the Dryer Photocopy this page for your maintenance records MaintenanceMaintenance Schedule 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 Replacing the Desiccant Corrective MaintenanceSymptoms of Worn Out Desiccant Replacing the Process Heater Electric Dryers Desiccant Tower Assembly Replacing the Regeneration Heater Electric Dryers Process Heater Box Assembly Regeneration Heater Box Assembly Introduction TroubleshootingBasic Troubleshooting Large Dehumidifying Dryers Troubleshooting Alarm Alarm Description Alarm Effect Code AlarmsAlarm Descriptions Using a Platinum Resistance Thermometer Determining Temperature Controller Errors or Sensor ErrorsUsing a Thermocouple Appendix Warranty Annex B Information Technical SpecificationsAftercooler Design Specifications Drawings and Diagrams Optional dryer dust collector Spare Parts List Level 3 Mechanical Components Located on back of Dryer Dryer Identification Serial Number Tag Parts and Service Department Sales Department Service DepartmentTechnical Assistance Parts Department