Sterling SDA 1000-5100 specifications Determining Temperature Controller Errors or Sensor Errors

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7-5 Determining Temperature Controller Errors or Sensor Errors

Using a Thermocouple

If the controller displays a temperature that is close to room temperature (70ºF/21ºC) when you short-circuit controller input terminals, the controller is normal and the sensor is probably broken, short-circuited, or incorrectly wired.

Using a Platinum Resistance Thermometer

If the controller displays a temperature of about 0.0°C (32ºF) when you insert a 100-ohm resistor between terminals A and –Bof the controller, and you short-circuit controller terminals +B and –B, the controller is normal and the sensor is probably broken, short- circuited, or incorrectly wired.

Other service problems or questions can be answered by contacting the Service Department.

Large Dehumidifying Dryers

Troubleshooting

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Contents SDA Large Dehumidifying Dryers With AP0 Controls Shipping Info Unpacking and InspectionEvent of Shipping Damage If the Shipment is Not CompleteReturns Warranty ReturnsCredit Returns Table of Contents Operation Dryer Identification Serial Number Tag Technical Assistance How to Use This Manual SafetySafety Symbols Used in this Manual Dryer Safety Tags Description Wear Safety Glasses and Work GlovesGeneral Responsibility ResponsibilityOperator Responsibility Maintenance Responsibility Reporting a Safety Defect Models Covered in This Manual Functional DescriptionGeneral Description Process/Regeneration Cycle Regeneration CycleSequence of Operation Controller Description Controller Screen DescriptionsMechanical Features Standard FeaturesElectrical Features Closed-Loop Regeneration OptionsProcess Aftercooler Process Air Dust Collector Recommended Temperature SettingsMaterial Overdrying Protection Mechanical Options Electrical OptionsSafety Devices and Interlocks Safety Circuit StandardsSafety Device Lock-Outs Fail Safe OperationPage Mechanical Installation Uncrating the EquipmentRigging and Placing Unit Making Electrical ConnectionsChecking for Proper Blower Rotation Checking Blower RotationMaking Dryer/Drying Hopper Process Air Connections Dryer/Drying Hopper Process Air ConnectionsConnecting Aftercooler/Precooler Cooling Water Optional Aftercooler Components & Flow RatesUsing the Drying Hopper Air Trap Drying Hopper Air TrapSwitches Indicator LightsProcess Air Temperature Controller ControlsLit when Control Output 1 is on. The Out1 Lit when Control Output 2 is on. Not usedIndicator Name Description Lights in the Operation Indicator Section whenSetting the Process Air Temperature E5CN Operating ParametersAdjustment Level Indicator Name Description Tuned prior to dryer startupEntering Operating Parameters to Select Modes ON, OFFProcess Air Dew Point Display Setting the High Dew Point AlarmOptional Setting the Redundant Safety Controller Redundant Safety Controller DisplayWatlow Operating Parameters Manf. setting Auto-Tuning the Dryer OperationInitial Start-up Pre-Startup ChecksDryer Operation Procedures Page Material Miser OFF Press + to Enable Alarm Display Messages Auto-Tuning the Dryer Shutting Down the DryerMaintenance Schedule MaintenancePhotocopy this page for your maintenance records Preventative Maintenance Cleaning or Replacing the Process Air FiltersCleaning or Replacing the Regeneration Filter Calibrating the Dirty Filter AlarmChecking the Dewpoint Control System Symptoms of Worn Out Desiccant Corrective MaintenanceReplacing the Desiccant Desiccant Tower Assembly Replacing the Process Heater Electric DryersProcess Heater Box Assembly Replacing the Regeneration Heater Electric DryersRegeneration Heater Box Assembly Basic Troubleshooting TroubleshootingIntroduction Large Dehumidifying Dryers Troubleshooting Alarm Descriptions AlarmsAlarm Alarm Description Alarm Effect Code Using a Thermocouple Determining Temperature Controller Errors or Sensor ErrorsUsing a Platinum Resistance Thermometer Warranty AppendixAftercooler Design Specifications Technical 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 DryerParts and Service Department Service Department Technical AssistanceParts Department Sales Department