Sterling 882.00295.00 specifications Shutdown

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Alarm

Alarm

Alarm

Comment

Description

Effect

REGEN

Regeneration air temperature deviation is

Alert Only

below low limit value.

LOW TEMP

Possible heater failure.

 

 

 

DEWPOINT

The dew point sensor is out of range.

Disables

Possible transducer or electronics

Switch on

SENSOR

failure.

Dew Point

 

 

The dew point value is above the high

 

HIGH

limit value. Faulty sensor or PC board.

Alert Only

DEWPOINT

Possible ambient air contamination or

 

 

failed regeneration cycle.

 

PROCESS

Process blower is not running.

Process

BLOWER FAIL

Possible overload fault, contactor fault.

Shut Down

PROCESS

Process heaters are not active.

Process Shut

Possible surface switch trip, redundant

HEATER FAIL

Down

temperature safety trip.

 

 

REGEN

Regeneration blower is not running.

Regeneration

BLOWER FAIL

Possible overload fault, contactor fault.

Shut Down

REGEN

Regeneration heaters are not active.

Immediate

HEATER FAIL

Possible surface switch trip.

Shut Down

DIRTY FILTER

Monitored filter(s) require cleaning.

Alert Only

P RETURN

The process return air temperature

Disables

thermocouple is out of range.

Over dry

SENSOR FAIL

Possible thermocouple failure.

Protection

 

5-5 Shutdown

To prolong the life of the process air heaters and desiccant beds, the following procedure should always be used to shut down the dryer. In an emergency situation, turning off the main power disconnect will have the immediate effect of stopping all of the dryer’s systems, but this is not the preferred method for shutting down the system.

1.On the Dryer Status screen, press the SHUT DOWN button to shut down the dryer. The process heater will shut off. The process blower will shut off after ??? minutes and the regeneration blower will shut down. The bed regeneration process will be completed. When the dryer is re-started, the process air will be directed through the bed that was regenerated last.

2.When processing is complete, close the hopper slide gate and shut down any in-line companion equipment, such as aftercoolers.

3.Empty the drying hopper, if desired.

If the dryer is turned off manually (by turning off the dryer without using the above shut- down procedure), the dryer will stop immediately. When the dryer is re-started, the process air will be directed through the last bed that was being used when the dryer control switch was turned off. If a bed was being regenerated when the dryer control switch was turned off, the regeneration process will start over on the same bed. This may cause the dewpoint to become bad for that desiccant tank.

Large Dehumidifying Dryers

Operation

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Contents SDA 1000-5100 Series Large Dehumidifying Dryer AP-1 Control If the Shipment is Not Complete Shipping InfoUnpacking and Inspection Event of Shipping DamageCredit Returns ReturnsTable of Contents Operation Large Dehumidifying Dryers How to Use This Manual SafetySafety Symbols Used in this Manual Dryer Safety Tags Description General Responsibility ResponsibilityOperator Responsibility Maintenance Responsibility Reporting a Safety Defect Models Covered in This Manual Functional DescriptionGeneral Description Sequence of Operation Process/Regeneration CycleElectrical Features Standard FeaturesAuto Start Timer Mechanical FeaturesDewpoint Extend OptionsClosed-Loop Regeneration Drawings and Diagrams Optional dryer dust collector Process Aftercooler Aftercooler Design SpecificationsProcess Air Dust Collector Process Air Dust Collector Material Overdrying Protection Recommended Temperature SettingsElectrical Options Mechanical OptionsController Options Fail Safe Operation Safety Devices and InterlocksSafety Circuit Standards Safety Device Lock-OutsPage Mechanical Options Denotes availability Dimensions and Specifications Denotes availabilityDenotes availability Making Electrical Connections Mechanical InstallationUncrating the Equipment Rigging and Placing UnitDescription Making Gas Line Connections Gas-Fired Models OnlyChecking Blower Rotation Checking for Proper Blower RotationDryer/Drying Hopper Process Air Connections Making Dryer/Drying Hopper Process Air ConnectionsProcess Air Heater on Drying Hopper Large Dehumidifying Dryers Mechanical Installation Aftercooler Components & Flow Rates Connecting Aftercooler/Precooler Cooling Water OptionalDrying Hopper Air Trap Using the Drying Hopper Air TrapController Description ControlsDryer Status Screen Startup Screen Process Air Temperature and Conveying Process ControllerIdentifying Controller Screens Dryer Alarms Help System LOG OFFMain Menu Screen Setting Values Dryer Menu Dryer Status Dryer Setup Over DRY Protect Alarms Auto TuneAuto Start Main Menu Dryer Setup Screen 3 Dryer Setup Screen 2Dryer Setup Screen 4 Overdry Protection Screen 1 Overdry ProtectionOverdry Protection Screen 2 Autotune Alarm History ScreenProcess AutoTune Screen Auto Start DEW Point SetupDew Point Setup Screen Autostart Timer ScreenSystem Menu System Setup SET Clock Hour Meters Alarm History StatusHelp Menu Help Menu ScreenSystem Setup Screen System Backup Service Menu Main Menu System SetupLOW Level Detection Setup Autostart Clock Screen Clock Menu ScreenOutput Status Hour Meter ScreenInput Status Input Status ScreenService System Backup ScreenService Menu Screen Alarm Screens Alarm Screen Example Redundant Safety Controller DisplayAlways put your set point to 30F above set point Setting the Redundant Safety ControllerLarge Dehumidifying Dryers Controls Start-up OperationUsing the Dryer Status Screen Alarm Descriptions AlarmsShutdown Maintenance Schedule MaintenancePhotocopy this page for your maintenance records Cleaning or Replacing the Process Air Filters Preventative MaintenanceCalibrating the Dirty Filter Alarm Cleaning or Replacing the Regeneration FilterChecking the Dewpoint Control System Symptoms of Worn Out Desiccant Corrective MaintenanceReplacing the Desiccant Replacing the Process Heater Electric Dryers Desiccant Tower AssemblyReplacing the Regeneration Heater Electric Dryers Process Heater Box AssemblyRegeneration Heater Box Assembly Basic Troubleshooting TroubleshootingIntroduction Large Dehumidifying Dryers Troubleshooting Using a Thermocouple Determining Temperature Controller Errors or Sensor ErrorsUsing a Platinum Resistance Thermometer Appendix WarrantyAnnex B Information Technical SpecificationsSpare Parts List Level 3 Mechanical Components Located on back of Dryer Dryer Identification Serial Number TagSales Department Service DepartmentTechnical Assistance Parts Department

882.00295.00 specifications

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