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Sterling STT 500 manual STT 5.1. Maintenance intervals

Models: STT 500

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STT 500

STT 500

5.1. Maintenance intervals

Daily:	Check warning signs on equipment for good
	legibility and completeness
	Clean return air filter and housing
	(depending on amount of dust collected)
	Lamp test: if you press the ”+/-”-button longer than
	2 seconds all LED’s must light up
Weekly:	Check function of the main switch
	Clean filter of the electrical cabinet
	(depending on amount of dust collected)
Monthly:	Check V-belt tension of blower

Every three months: Clean filter of the regeneration blower (depending on amount of dust collected)

Every six months:	Exchange return air filter
	(depending on amount of dust collected)
	Exchange filter of the electrical cabinet
	(depending on amount of dust collected)
	Check all electrical and mechanical connections for tight fit.
Yearly:	Exchange filter of the regeneration blower
	(depending on amount of dust collected

&	This maintenance schedule is calculated for 3-shift operation.

F	The given maintenance intervals are average values.
F	Check whether in your individual case the maintenance intervals must be
	shortened.

SM2-620

Maintenance 5-3

Image 47

Sterling STT 500 manual STT 5.1. Maintenance intervals

Contents

SM2-620 Operating Instructions Dehumidified Air Dryer STTwith Siemens S7 control unit Sterling Material ProcessingSales and Contracting Department Parts and Service DepartmentSM2-620 STT Sterling Material ProcessingEdition 04/02 Order confirmation numberPage TABLE OF CONTENTS Page Page General Information 1. General InformationDehumidified Air Dryer General Information Dehumidified Air Dryer 1.1. Warnings and symbols1.5. Notes on Usage 1.2. Explanations and information1.3. Legal basis 1.4. Fields of applicationsDehumidified Air Dryer 2. Safety instructionsSafety instructions General Dehumidified Air Dryer 2.1. For your safetySafety instructions Operation Safety instructionsAssembly Dehumidified Air DryerDehumidified Air Dryer Safety instructionsMaintenance Dehumidified Air Dryer 2.2. For the safety of the devicesSafety instructions Start-up 3. Start-upStart-up STT 3.1. Control system3.1.1. Key assignment SM2-620 STT 3.1.2. Flow chartIndicator lamp messages Start-upStart-up STT 3.2. Switching on the dryer3.2.1. Operation statuses Start-up 3.4. PasswordsSTT 3.3. Viewing the software-version Edit LoginStart-up LogoutStart-up STT 3.5. Basic parameters3.5.1. Turning the devices on/off Timer on/offPress the ”F1-key Start-upUsed air Act STT 3.5.2. Entering dryer valuesStart-up Regeneration Heater ActReturn air cooler Act Start-upReturn air cooler Target Hopper entry X Act STT 3.5.3. Entering hopper valuesStart-up Hopper entry X TargetGranules act.: _ C Start-upGranules target % = C FStart-up STT 3.5.4. Observing processing statuse.g. valve block moved in/moved out/error Time STT 3.5.5. Setting date and timeStart-up DateLanguage STT 3.5.6. Viewing/changing language and contrastStart-up ContrastRun on time drying blower --300 sec STT 3.5.7. Changing parametersStart-up Select ”Parameters”XX ON 00 00 OFF 00 00 XX = day Mo-Su STT 3.5.8. Setting the timerStart-up Select ”Main menu” STT 3.6. Starting continuous operationStart-up System runtime STT 3.7. Viewing system runtimeStart-up Select ”System runtime”Start-up STT 3.8. Switching the dryer offSwitch off the dryer at the main switch Disconnect the power supplyDehumidified Air Dryer 4. Error and error correctionError and error correction Dehumidified Air Dryer Error and error correctionFailures must be repaired immediately LED “ALARM” View Error and error correctionDehumidified Air Dryer Total messages Error and error correctionDehumidified Air Dryer NumberOverflow warning On/Off Error and error correctionDehumidified Air Dryer OverflowA Safety Temperature Limiter has been Activated Error and error correctionPLC = SPS Battery is Empty Main Switch is OffError Bypass Flap Error and error correctionExcess Temperature Regeneration Heater Insufficient Temperature Regeneration HeaterInsufficient Temperature Drying Heater Error and error correctionTemperature Measurement Drying Heater Defective Excess Temperature Drying HeaterValve Error Hopper Error and error correctionTemperature Measurement Granules Defective Hopper Excess Temperature Granules HopperMaintenance 5. MaintenancePlease observe the maintenance schedule MaintenanceMaintenance STT 5.1. Maintenance intervalsMaintenance STT 5.2. Cleaning/renewing the air filtersReturn air filter MaintenanceRegeneration air filter MaintenanceRemove the lid of the filter MaintenanceRe-installthe cleaned/new filter mat Filter of the electrical cabinetMaintenance STT 5.3. Tensioning the V-beltsRemove the protective grid of the blower position MaintenanceMaintenance 5.5. Servicing the accessories5.4. Disposing of the drying agent Maintenance 5.6. Changing the battery of the control systemSM2-620 MaintenanceStore backup batteries in a dry and cool place Order number batteryMaintenance STT 5.6.1. Resetting the control valuesFunctional description 6. Functional descriptionFunctional description STT 6.1. DryerDew point dependent regeneration switch optional Functional description STT 6.2. Drying hopper optionalFunctional description STT 6.3. Return air coolerFunctional description STT 6.4. Hopper heaters optional6.5. Automatic motor flaps optional Dehumidified Air Dryer 7. Transport, Assembly and StorageTransport, Assembly and Storage with a fork lift truck Dehumidified Air Dryer 7.1. Transport and PackingTransport, Assembly and Storage Transport with a workshop crane SM2-620 Transport, Assembly and StorageDehumidified Air Dryer with a workshop craneTransport, Assembly and Storage Dehumidified Air Dryer 7.2. Assembly7.3. Storage Dehumidified Air Dryer 8. Assembly instructionsAssembly instructions Dehumidified Air Dryer 8.2. Connection of the air coolersAssembly instructions Assembly instructions Dehumidified Air Dryer 8.3. Electrical connectionOptional Equipment 9. Technical DataTechnical Data Basic EquipmentSM2-620 Technical DataSM2-620 Technical DataDimension sheet Spare parts list 10. Spare parts listPos. ID-numberDescription Spare parts list4 5 6 97762 Spare parts listPos. ID-numberDescription Moisture sensor Spare parts listPos. ID-numberDescription 83986Return air coler optional 10.1. Switching Cabinet and Operating UnitSpare parts list AccessoriesDehumidified Air Dryer 11. Electrical manualElectrical manual Version 64.10-0134GB0110/97 12. AccessoriesAccessories Dehumidified Air Dryer02/01GB Accessories Entering values on the OPSterling Material Processing Step 3.3Entering ValuesProcedure General OperationException 3.3.1Entering Numerical ValuesGeneral Operation Step 3.3.2Entering Alphanumeric ValuesProcedure General OperationStep ProcedureGeneral Operation Step 3.3.3Entering Symbolic ValuesProcedure General Operation10/00GB Accessories Flap control with Fuzzy-LogicSterling Material Processing 10/00GB Flap control with Fuzzy-LogicControl unit “flap”