Operation, Switches, Indicator Lights | Sterling SDA Series 25-100

Chapter 4: Operation

4-1 Controller Description and Operation

Identifying Control Panel Indicator Lights and Switches for the Standard Controller

Switches

Main Power. This switch allows the dryer to receive power from the main power supply (3 phase only).

Dryer Control ON/OFF Switch. This switch energizes or de-energizes control power to the indicator panel and starts the dryer. (The controller cannot be energized without the dryer running.)

Indicator Lights

Alarm Light. This feature warns the operator of a high bed safety temperature, a regeneration heater fault, or a blower failure.

Power On. This light illuminates when the main power switch is on telling the user the dryer is energized.

Dryer Operating: Indicates the process air blower is on.

Figure 5: Dryer Control Panels

Standard Controller – Standard Single Phase Control Panel shown with Optional Dew Point Monitor

15, 30, & 60 cfm Compact Dryers

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Sterling SDA Series 25-100 4-1Controller Description and Operation, Switches, Indicator Lights, Dryer Control Panels

Contents

SDA Series 15-60cfm Compact Dehumidifying Dryers Shipping Information Unpacking and InspectionIn the Event of Shipping Damage If the Shipment is Not Complete Table of Contents CHAPTER 3 INSTALLATIONCHAPTER 1 SAFETY CHAPTER 2: FUNCTIONAL DESCRIPTION CHAPTER 5 MAINTENANCE CHAPTER 6 TROUBLESHOOTINGCHAPTER 7 APPENDIX 15, 30, & 60 cfm Compact Dryers Safety Symbols Used in this Manual Chapter 1 Safety1-1How to Use This Manual 1-2Safety Tag Information 1-3Warnings and PrecautionsRead Operation and Installation Manual Dryer Safety Tags Operator Responsibility 1-4ResponsibilityGeneral Responsibility REMEMBER Maintenance Responsibility Reporting a Safety Defect Chapter 2 Functional Description 2-1Models Covered in This Manual2-2General Description What is desiccant? 2-3Standard Features Figure 1 Typical Dryer Air Flow SchematicMechanical Features Electrical Features Controller Features 2-5Safety Devices and Interlocks2-4Options Fail Safe Operation Safety Circuit StandardsSafety Device Lock-Outs 3-2Rigging and Placing the Dryer Chapter 3 Installation3-1Uncrating the Equipment DEW POINT POWER ON15, 30, & 60 cfm Compact Dryers 3-3Electrical Connections 3-4Setup Procedures Three-PhaseModelsChecking for Proper Blower Rotation Floor Mount Models 3-5Initial Start-up Installing Water LinesDrying Hopper Air Trap Considerations Optional Aftercooler Auto-Tuningthe Dryer Shutting Down the Dryer Chapter 4 Operation 4-1Controller Description and OperationSwitches Indicator Lights Process Air Temperature Controller PV SV Indicator Lit when Control Output 1 is on. The Out1Lit when Control Output 2 is on. Not used in Indicator Setting the Process Air Temperature IndicatorAdjustment Level Indicator Indicator NameDescription Entering Operating Parameters to Select Modes Optional Setting the High Dew Point AlarmProcess Air Dew Point Display 4-2Dryer Operation Procedures Controller Operation Alarm Display Messages HIGH TEMP VALVE MTR HEAT COOL 50 SYSTEM NORMALValve Motor Time-Out Blower Overload No Alarms PROC BLWR Chapter 5 Maintenance 5-1Preventative Maintenance ScheduleEvery Day Every week 5-2Preventative Maintenance Figure 9 Air Filter Location and DisassemblyServicing Process Air Filters Vacuuming 5-3Corrective Maintenance Cleaning with Compressed AirSymptoms of Worn Desiccant Servicing the Dew Point Monitor + FIRST AID + Replacing Worn Desiccant Figure 10 Desiccant Bed Location and Disassembly Figure 11 Required Desiccant Amounts 13X Type WARNING! Hazardous electrical current present ProceduresReplacing the Process/Regeneration Heater Replacing/Cleaning the Cooling Coil Figure 13 Cooling Coil Location and DisassemblyReplacement Procedures If used as an after-Cooler 3 to 4 GPM @ 85F 15, 30, & 60 cfm Compact Dryers 8.Inset the four 10-32bolts back in place9.Turn the water to the cooling coil back on HIGH TEMP Chapter 6 Troubleshooting6-1Introduction PROC BLWR Alarm MessageHIGH TEMP Cause VALVE MTR Using a ThermocoupleAlarm Message Cause 7-1Warranty Chapter 7 AppendixWarranty Specifications Warranty Restrictions Annex B Information 7-2Technical SpecificationsCustomer Responsibilities 7-3Drawings and Diagrams Aftercooler Design SpecificationsRegeneration MoistureMake Up Air Exhaust High Pressure Peripheral Blower Figure 16 Low Heat Model 120F to 250F Air Flow After-Cooler Regeneration MoistureMake Up AirExhaust High Pressure Peripheral Blower 7-4Spare Parts List DRYER SPARE PARTS LIST 15, 30, 60 cfm Models15, 30, & 60 cfm Compact Dryers Mechanical Components 15, 30, & 60 cfm Compact Dryers HI-COREDESICCANT DRYER 15/30/60 CFM UNITS Description 15, 30, & 60 cfm Compact Dryers30 CFM Description 15, 30, & 60 cfm Compact Dryers60 CFM 15, 30, & 60 cfm Compact Dryers A0571672120V CONTROL COMMON PARTS Description 7-5Returned Material Policy Credit Returns 7-6Dryer Identification Serial Number Tag 7-7Technical AssistanceWarranty Returns Service Department Contract Department 15, 30, & 60 cfm Compact Dryers

Sterling SDA Series 25-100 specifications 4-1Controller Description and Operation, Switches

Models: SDA Series 25-100

Chapter 4: Operation

4-1 Controller Description and Operation

Switches

Indicator Lights

Figure 5: Dryer Control Panels