Manuals / Sterling / Household Appliance / Dehumidifier

Sterling 882.00295.00 specifications 2-4Options, Dewpoint Extend, Closed-LoopRegeneration

Models: 882.00295.00

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2-4 Options

•Sequence shutdown switch

;NFPA86, UL, AGA & CGA machinery electrical standards (Gas Dryers)

;Available supply voltages of 208, 230, 460, 575/3/60 and 400/3/60

2-4 Options

Dewpoint Extend

The Dewpoint Extend option measures the temperature of the moist air as it is bled to the atmosphere after regeneration. After a period of time, the bleed temperature will rise. This condition, called "bed breakthrough" indicates that the bed is dry. At bed breakthrough, the bleed air temperature peaks between 350°F and 400°F.

The regeneration heaters turn off automatically on bed breakthrough for additional energy savings. A 550°F regeneration temperature will dry the desiccant beds sufficiently to produce process air dewpoint of -40°F. In a properly sized system, this ultra-low humidity level will be more than adequate to dry plastics to as little as .003% moisture.

Closed-Loop Regeneration

An optional regeneration closed-loop valve and heat exchanger can be used to close the regeneration loop during the cooling portion of the regeneration cycle. If this option is enabled on the dryer, air will be bled to the atmosphere until the heating portion of the regeneration cycle is finished. Then, the regeneration closed loop valve will direct air through a water-cooled heat exchanger and back into the regeneration loop (see Figure 2).

		Figure 2: Closed Loop Regeneration
		Regeneration		Regeneration
		Blower		Blower
	AD600-AD1500		AD600-AD1500
	Dryer Flow Schematic	Dryer Valve	Dryer Flow Schematic	Dryer Valve
	Regeneration Closed Loop	Regeneration	Regeneration Heating is
	Cooling is Activated	Regeneration	Activated
	Cooling is Activated	Filter	Activated	Regeneration
				Filter
		Optional		Optional
		Regeneration		Regeneration
	Regeneration	Closed Loop	Regeneration	Closed Loop
	Regeneration	Cooler	Regeneration	Cooler
	Heaters	Cooler	Heaters	Cooler
	Heaters		Heaters
		Regenerarion		Regeneration
		Exhaust		Regeneration
		Exhaust		Exhaust
				Exhaust
		Optional		Optional
		Regeneration		Regeneration
		Closed Loop		Closed Loop
		Valve		Valve
	Left Desiccant		Left Desiccant

Large Dehumidifying Dryers

Functional Description

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Sterling 882.00295.00 specifications 2-4Options, Dewpoint Extend, Closed-LoopRegeneration, Closed Loop Regeneration

Contents

AP-1Control SDA 1000-5100Series Large Dehumidifying DryerIf the Shipment is Not Complete Shipping InfoUnpacking and Inspection In the Event of Shipping DamageWarranty Returns ReturnsCredit Returns CHAPTER 2 FUNCTIONAL DESCRIPTION Table of ContentsCHAPTER 1 SAFETY CHAPTER 3 MECHANICAL INSTALLATIONCHAPTER 5 OPERATION CHAPTER 6 MAINTENANCECHAPTER 7 TROUBLESHOOTING CHAPTER 4 CONTROLSContract Department Service DepartmentParts Department Sales DepartmentChapter 1 Safety 1-1How to Use This ManualSafety Symbols Used in this Manual Description 1-2Warnings and PrecautionsDryer Safety Tags Wear SAFETY GLASSES and WORK GLOVES1-3Responsibility General ResponsibilityOperator Responsibility Maintenance Responsibility Reporting a Safety Defect 2-2General Description Chapter 2 Functional DescriptionWhat is Desiccant? 2-1Models Covered in This ManualThe Process/Regeneration Cycle Figure 1 Regeneration CycleSequence of Operation Mechanical Features 2-3Standard Features7 day timer Auto Start TimerFigure 2 Closed Loop Regeneration 2-4OptionsDewpoint Extend Closed-LoopRegeneration2-5Drawings and Diagrams Large Dehumidifying DryersFunctional Description Optional dryer dust collector Large Dehumidifying DryersFunctional Description Process Air Dust Collector Aftercooler Design SpecificationsProcess Aftercooler Figure 3 Process AftercoolerFigure 4 Process Air Dust Collector Large Dehumidifying DryersFunctional Description Recommended Temperature Settings Material Overdrying ProtectionFigure 5 Material Miser/Air Balance Valve Mechanical Options Electrical OptionsController Options Fail Safe Operation 2-6Safety Devices and InterlocksSafety Circuit Standards Safety Device Lock-OutsLarge Dehumidifying Dryers 9 Denotes availability Dimensions and Specifications9 Denotes availability Mechanical OptionsLarge Dehumidifying Dryers Electrical FeaturesElectrical Options 9 Denotes availability3-3Making Electrical Connections Chapter 3 Mechanical Installation3-1Uncrating the Equipment 3-2Rigging and Placing UnitLarge Dehumidifying Dryers Make sure all electrical connections are tightFigure 6 Gas Flow Schematic Mechanical InstallationFigure 7 Checking Blower Rotation 3-5Checking for Proper Blower RotationMake sure the hoses are not kinked Return air thermocouple location Mechanical InstallationLarge Dehumidifying Dryers Process Air Heater on Drying HopperMechanical Installation Large Dehumidifying DryersReturn air thermocouple location AD1000 ModelAD600 AD850Figure 10 Drying Hopper Air Trap 3-8Using the Drying Hopper Air TrapChapter 4 Controls 4-1Controller DescriptionFigure 11 Controller Screen Descriptions Dryer Status Screen Startup Screen Disconnect SwitchControl Power Switch Alarm Horn & LightTypical Dryer Screens Dryer Status Screen DRYER ALARMS HELP SYSTEM LOG OFF4-4Identifying Controller Screens Main Menu Screen Main Menu ScreenSETTING VALUES Large Dehumidifying DryersControls Dryer Setup Screen - 1 of DRYER STATUS DRYER SETUP OVER DRY PROTECTALARMS AUTO TUNE Dryer SetupLarge Dehumidifying Dryers Dryer Setup Screen - 2 ofDryer Setup Screen - 3 of Dryer Setup Screen - 4 ofLarge Dehumidifying Dryers OVERDRY PROTECTIONOverdry Protection Screen - 1 of Overdry Protection Screen - 2 ofAUTOTUNE Process AutoTune Screen ALARMS Alarm History ScreenControls DEW POINT SETUP Dew Point Setup ScreenAUTO START Autostart Timer Screen Large Dehumidifying DryersMAIN MENU Main Menu Screen SYSTEM SETUP SET CLOCK HOUR METERSALARM HISTORY I/O STATUS HELP MENU Help Menu ScreenLarge Dehumidifying Dryers SYSTEM BACKUP SERVICE MENU MAIN MENUSYSTEM SETUP System Setup Screen LOW LEVEL DETECTION SETUPAutostart Clock Screen SET CLOCK Clock Menu ScreenHOUR METERS Hour Meter ScreenINPUT STATUS Input Status Screen OUTPUT STATUS Output StatusControls System Backup ScreenSERVICE Service Menu Screen Large Dehumidifying DryersALARMS Alarm History Screen Alarm Screens4-5Redundant Safety Controller Display Alarm Screen ExampleOptional Always put your set point to 30F above set point 4-6Setting the Redundant Safety ControllerControls Large Dehumidifying Dryers5-1 Start-up Chapter 5 OperationDryer Status Screen 5-2Using the Dryer Status ScreenAlarm Alarm History ScreenAlarm AlarmComment AlarmAlarm Alarm6-1Maintenance Schedule Chapter 6 Maintenance600-1500cfm dryers 6-2Preventative MaintenanceCleaning or Replacing the Process Air Filters Figure 13 Process Filter HousingCalibrating the Dirty Filter Alarm Cleaning or Replacing the Regeneration FilterChecking the Dewpoint Control System Use with adequate ventilation Symptoms of Worn Out DesiccantDo not get in eyes Avoid prolonged contact with skinFigure 14 Desiccant Tower Assembly Figure 15 Desiccant Replacement AmountsReplacing the Process Heater Electric Dryers Replacing the Regeneration Heater Electric Dryers Figure 16 Process Heater Box AssemblyFigure 17 Regeneration Heater Box Assembly Chapter 7 Troubleshooting 7-2Basic Troubleshooting7-1Introduction Large Dehumidifying Dryers TroubleshootingUsing a Platinum Resistance Thermometer Using a Thermocouple8-1Warranty Chapter 8 AppendixAnnex B Information 8-2Technical SpecificationsLEVEL 1 Mechanical Components Spare Parts ListLARGE DRYER SPARE PARTS LIST 600,850,1000 1250,1500,2000,2500, ANDLEVEL 3 Mechanical Components Large Dehumidifying DryersAppendix LEVEL 3 Electrical ComponentsAppendix 8-5Dryer Identification Serial Number TagLocated on back of Dryer Large Dehumidifying DryersSales Department Service Department8-5Technical Assistance Parts Department