Sterling SDF 250, SDF 400, SDF 500 manual Maintenance schedule

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	SDF 250/400/500
5.1. Maintenance schedule
Daily:	Check warning signs on equipment for good legibility and completeness
	Clean return air filters and casing (depending on dust build-up)
Weekly:	Check main switch for proper function
	Check the signal lamps for proper functioning
Every three months:	Clean filter of the regeneration blower (depnding on amount of dust
	collected)
Every six months:	Change return air filters (depending on dust build-up)
	Clean air filter of the suction box
	All electrical and mechanical connections should be checked to see if
	they fit securely
Annually:	Dewpoint should be checked (only by Sterling service personnel)
Whenever the
material is changed:	The drying hopper and suction box must be cleaned

&The service intervals refer to a 3-shift operation.

FThe given maintenance intervals are average values.

Check whether in your individual case the maintenance intervals must be shortened.

Maintenance 5-3

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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 ValuesHeater Reg. Act Exit air ActDew point max Dew point ActEntering hopper values Hopper temp Target Hopper temp ActGranule Temp 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 Error Bypass Flap Error Valve BlockTemperature Measurement Outgoing Air Defective Excess Temperature Return AirExcess Temperature Heater Hopper Insufficient Temperature Heater HopperTemperature Measurement Granules Defective 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 Technical data Basic VersionOptional 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