Sterling SDF 250, SDF 400 Error Bypass Flap, Error Valve Block, Excess Temperature Return Air

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SDF 250/400/500

Error Bypass Flap

The bypass flap does not close or closes too slowly.

Check the bypass flap.

Error Valve Block

The valve block has not reached the proper position. The main switch is placed in the off position.

Check the position of the valve block. Press the “ACK” key and put the main switch in the on position immediately. If the valve block has not reached the correct position within 1 minute, the main switch is again placed in the off position.

Sterling Service.

Temperature Measurement Outgoing Air Defective

Check cables and sensor.

Temperature Measurement Return Air Defective

Check cables and sensor.

Excess Temperature Return Air

Check cables and sensor.

Check the return air cooler.

Temperature Measurement Drying Heater Defective

Check cables and sensor.

Check the power supply.

Short circuit check.

Excess Temperature Drying Heater

The drying temperature is too high.

Check the safety temperature limiter.

Sterling Service.

Insufficient Temperature Drying Heater

The drying temperature is too low.

Check the drying heater.

Temperature Measurement Heater Defective Hopper X

(X = number of the drying hopper) Check cables and sensor.

Check the power supply.

Short circuit check.

Error and error correction 4-4

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Contents Sterling Material Processing SDF 250/400/500 SDF 250/400/500 Table of contents 10-1 General Information SDF 250/400/500 SDF 250/400/500 Legal basis Explanations and informationFields of applications Safety instructions General Assembly OperationMaintenance For the safety of the devices Start up Control Unit Touch ScreenSwitching on the Dryer Basic parameters Entering Dryer ValuesDew point max Heater Reg. ActExit air Act Dew point ActEntering hopper values Granule Temp Hopper temp TargetHopper temp Act Drying time TargetSetting the timer Timer is only operating, when the dryer is switched on Observing processing status Actual hopper temperature displayed in C Status dryerActual operation status Setting date and time Changing language SDF 250/400/500 Continuous operation SDF 250/400/500 Start up Switching the dryer/hopper heater off Error and error correction LED Alarm Actual messages Temperature Measurement Outgoing Air Defective Error Bypass FlapError Valve Block Excess Temperature Return AirTemperature Measurement Granules Defective Hopper Excess Temperature Heater HopperInsufficient Temperature Heater Hopper Excess Temperature Granules HopperOverload Regeneration Heater STB has been activated Main switch hopper heater # Controller is offOverload Drying Heater STB has been activated Alarm protocol Maintenance SDF 250/400/500 Maintenance schedule Cleaning or Replacing the Air Filter Cleaning or Replacing the Return Air Filter SDF DryerCleaning or Replacing the Regeneration air filter Filter of the electrical cabinet Disposing of Drying Agents Cleaning the Drying Hopper Remove any granules remaining in the cleaning opening STTSTT 60 Changing the battery of the control system Notch on the battery connector must point to the leftSDF 250/400/500 Resetting the control values Functional description Dew point dependent regeneration switch optional General InformationDrying Hopper Optional Hopper heaters optionalConnection to a Pneumatic Conveying System Optional Return Air Cooler OptionalTransport, Assembly and Storage Tansport and Packing Transport with a fork lift truckTransport with a workshop crane Assembly StorageAssembly instructions Connection of Return Air Cooler Optional Electrical Connection Compressed Air Supply Optional Equipment Technical dataBasic Version PerformanceSDF 250/400/500 Accessories Accessories Spare parts list Drying Hoppers STT 25 STT STT 25 STT STT 25 STT STT 25 STT STT 25 STT STT 25 STT