Sterling SDF 500, SDF 400, SDF 250 manual Cleaning or Replacing the Air Filter

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SDF 250/400/500

5.2. Cleaning or Replacing the Air Filter

Switch off the hopper heater:

And the dryer:

L

&

Wait until the regeneration phase is finished and the blower has come to a standstill.

Switch off the main switch of the dryer.

Interrupt the mains supply so that the device cannot be switched on unintentionally.

If there is a return air cooler installed, switch off its coolant circuit.

Switch off the drying hopper:

Clogged filters substantially reduce the amount of circulating air and lead to a production lag of your dryer. Clogged filters may also damage the heating elements.

Purchase order numbers return air filter
when operating without return air cooler:	ID 86378

when operating with return air cooler: ID 88226

Purchase order number regeneration air filter: ID 98171

Maintenance 5-4

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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 Fields of applications Explanations and informationLegal basis Safety instructions General Operation AssemblyMaintenance For the safety of the devices Start up Touch Screen Control UnitSwitching on the Dryer Entering Dryer Values Basic parametersExit air Act Heater Reg. ActDew point max Dew point ActEntering hopper values Hopper temp Act Hopper temp TargetGranule Temp Drying time TargetSetting the timer Timer is only operating, when the dryer is switched on Actual operation status Actual hopper temperature displayed in C Status dryerObserving processing 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 Error Valve Block Error Bypass FlapTemperature Measurement Outgoing Air Defective Excess Temperature Return AirInsufficient Temperature Heater Hopper Excess Temperature Heater HopperTemperature Measurement Granules Defective Hopper Excess Temperature Granules HopperOverload Drying Heater STB has been activated Main switch hopper heater # Controller is offOverload Regeneration Heater STB has been activated Alarm protocol Maintenance SDF 250/400/500 Maintenance schedule Cleaning or Replacing the Air Filter SDF Dryer Cleaning or Replacing the Return Air FilterCleaning or Replacing the Regeneration air filter Filter of the electrical cabinet Disposing of Drying Agents Cleaning the Drying Hopper STT Remove any granules remaining in the cleaning openingSTT 60 Notch on the battery connector must point to the left Changing the battery of the control systemSDF 250/400/500 Resetting the control values Functional description General Information Dew point dependent regeneration switch optionalHopper heaters optional Drying Hopper OptionalReturn Air Cooler Optional Connection to a Pneumatic Conveying System OptionalTransport, Assembly and Storage Transport with a fork lift truck Tansport and PackingTransport with a workshop crane Storage AssemblyAssembly instructions Connection of Return Air Cooler Optional Electrical Connection Compressed Air Supply Basic Version Technical dataOptional Equipment 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