Sterling SDAA 25-100 Process Air Dew Point Display, Optional, Setting the High Dew Point Alarm

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Process Air Dew Point Display

Optional

The Process Air Dew Point meter indicates the current process air delivery moisture content. Standard dryers use a microprocessor-based controller for displaying dew point air temperature. The controller is a modular, self-contained unit removable from the mounting housing. All parameters are factory set and adjusted; normally, no field adjustment to the internal controls are necessary.

Figure 7: Typical Dew Point Display Monitor

PV

SV

OUT1

OUT2 MANU STOP RMT AT

SUB1

AT

OMRONE5CK

Note: The only functional buttons on this contoller are the up and down keys.

Setting the High Dew Point Alarm

The high dew point alarm setting is changed by pressing the up and down keys to input the alarm value. The factory setting for Alarm Value 1 (AL-1) is -10°F (-23°C).

Restoring the Process Air Dew Point Meter (E5CK) to Factory Setup

If the preset parameters on the controller have been tampered with and it no longer functions properly, call the Service Department. This controller is not meant to be modified.

Note: The dew point alarm monitors and indicates a deviation from the set point.

Dehumidifying Dryers

Chapter 4: Operation

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Contents Sdaa 25-100 15-60 cfm Dehumidifying Dryers Shipping Information Table of Contents Maintenance Service Department Sales Department Contract Department Safety Symbols Used in this Manual SafetyHow to Use This Manual Wear Safety Glasses and Work Gloves Responsibility General ResponsibilityOperator Responsibility RememberMaintenance Responsibility Reporting a Safety DefectDehumidifying Dryers Safety General Description Functional DescriptionModels Covered in This Manual Standard Features What is desiccant?Mechanical Features Electrical FeaturesOptions Safety Devices and InterlocksController Features Fail Safe Operation Safety Circuit StandardsSafety Device Lock-Outs Rigging and Placing the Dryer InstallationUncrating the Equipment Machine-Mount Dryer Dimensions Floor-Mount Dryer Dimensions Suggested Lift Rigging for Cart Mounted Dryers Recommended Dryer Lifting HardwareElectrical Connections Suggested Lift Rigging for Machine Mounted DryersSetup Procedures Three-Phase ModelsChecking for Proper Blower Rotation Making Dryer/Drying Hopper Process Air ConnectionsOptional Aftercooler Installing Water Lines Hose and Hose ClampDrying Hopper Air Trap Considerations Auto-Tuning the Dryer Initial Start-upPre-Startup Checks Starting Up the DryerShutting Down the Dryer Operation Start-upController Description and Operation SwitchesIndicator Lights Lit when Control Output 2 is on. Not used Process Air Temperature ControllerLit when Control Output 1 is on. The Out1 Indicator Name Description Lights in the Operation Indicator Section whenIdentifying Temperature Controller Keys Setting the Process Air TemperatureE5CN Operating Parameters Adjustment Level Indicator Name Description Tuned prior to dryer startupEntering Operating Parameters to Select Modes ON, OFFOptional Setting the High Dew Point AlarmProcess Air Dew Point Display Watlow Operating Parameters Redundant Safety Controller DisplaySetting the Redundant Safety Controller 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 DryerPhotocopy this page for your maintenance records MaintenancePreventative Maintenance Schedule Preventative Maintenance Recommendations for Cleaning and Replacing FiltersServicing Process Air Filters VacuumingCleaning with Compressed Air Servicing the Dew Point MonitorCorrective Maintenance Symptoms of Worn DesiccantFirst AID Replacing Worn DesiccantConsult local disposal regulations for more information Procedures Replacing the Process HeaterIntroduction TroubleshootingProblem Possible cause Corrective action Problem Possible cause Corrective action Check resin manufacturer’s data Using a Platinum Resistance Thermometer Determining Temperature Controller Errors or Sensor ErrorsUsing a Thermocouple Warranty Warranty SpecificationsWarranty Restrictions AppendixCustomer Responsibilities Warranty LiabilitiesOptional Components Technical Specifications Annex B InformationDrawings and Diagrams Spare Parts List Aftercooler Design SpecificationsLevel 2 & 3 Spare Parts List Electrical & Mechanical Safety Tag Information Warranty ReturnsDryer Safety Tags Returned Material PolicyDryer Identification Serial Number Tag Located on back of DryerService Department Technical AssistanceParts Department Sales Department