Sterling 882.00295.00 specifications Determining Temperature Controller Errors or Sensor Errors

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7-3 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 1000-5100 Series Large Dehumidifying Dryer AP-1 Control Event of Shipping Damage Shipping InfoUnpacking and Inspection If the Shipment is Not CompleteReturns Credit ReturnsTable of Contents Operation Large Dehumidifying Dryers Safety How to Use This ManualSafety Symbols Used in this Manual Dryer Safety Tags Description Responsibility General ResponsibilityOperator Responsibility Maintenance Responsibility Reporting a Safety Defect Functional Description Models Covered in This ManualGeneral Description Process/Regeneration Cycle Sequence of OperationMechanical Features Standard FeaturesAuto Start Timer Electrical FeaturesOptions Dewpoint ExtendClosed-Loop Regeneration Drawings and Diagrams Optional dryer dust collector Aftercooler Design Specifications Process AftercoolerProcess Air Dust Collector Process Air Dust Collector Recommended Temperature Settings Material Overdrying ProtectionMechanical Options Electrical OptionsController Options Safety Device Lock-Outs Safety Devices and InterlocksSafety Circuit Standards Fail Safe OperationPage Dimensions and Specifications Denotes availability Mechanical Options Denotes availabilityDenotes availability Rigging and Placing Unit Mechanical InstallationUncrating the Equipment Making Electrical ConnectionsMaking Gas Line Connections Gas-Fired Models Only DescriptionChecking for Proper Blower Rotation Checking Blower RotationMaking Dryer/Drying Hopper Process Air Connections Dryer/Drying Hopper Process Air ConnectionsProcess Air Heater on Drying Hopper Large Dehumidifying Dryers Mechanical Installation Connecting Aftercooler/Precooler Cooling Water Optional Aftercooler Components & Flow RatesUsing the Drying Hopper Air Trap Drying Hopper Air TrapControls Controller DescriptionProcess Air Temperature and Conveying Process Controller Dryer Status Screen Startup ScreenDryer Alarms Help System LOG OFF Identifying Controller ScreensMain Menu Screen Setting Values Dryer Status Dryer Setup Over DRY Protect Alarms Auto Tune Dryer MenuAuto Start Main Menu Dryer Setup Screen 2 Dryer Setup Screen 3Dryer Setup Screen 4 Overdry Protection Overdry Protection Screen 1Overdry Protection Screen 2 Alarm History Screen AutotuneProcess AutoTune Screen Autostart Timer Screen DEW Point SetupDew Point Setup Screen Auto StartHelp Menu Screen System Setup SET Clock Hour Meters Alarm History StatusHelp Menu System MenuSystem Backup Service Menu Main Menu System Setup System Setup ScreenLOW Level Detection Setup Clock Menu Screen Autostart Clock ScreenInput Status Screen Hour Meter ScreenInput Status Output StatusSystem Backup Screen ServiceService Menu Screen Alarm Screens Redundant Safety Controller Display Alarm Screen ExampleSetting the Redundant Safety Controller Always put your set point to 30F above set pointLarge Dehumidifying Dryers Controls Operation Start-upUsing the Dryer Status Screen Alarms Alarm DescriptionsShutdown Maintenance Maintenance SchedulePhotocopy 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 Corrective Maintenance Symptoms of Worn Out DesiccantReplacing the Desiccant Desiccant Tower Assembly Replacing the Process Heater Electric DryersProcess Heater Box Assembly Replacing the Regeneration Heater Electric DryersRegeneration Heater Box Assembly Troubleshooting Basic TroubleshootingIntroduction Large Dehumidifying Dryers Troubleshooting Determining Temperature Controller Errors or Sensor Errors Using a ThermocoupleUsing a Platinum Resistance Thermometer Warranty AppendixTechnical Specifications Annex B InformationSpare Parts List Level 3 Mechanical Components Dryer Identification Serial Number Tag Located on back of DryerParts Department Service DepartmentTechnical Assistance Sales Department

882.00295.00 specifications

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