Sterling SDA Series 25-100 specifications 4-2Dryer Operation Procedures, Controller Operation

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4-2 Dryer Operation Procedures

Note: The dew point alarm monitors and indicates a deviation from the set point.

4-2 Dryer Operation Procedures

Controller Operation

1.Turn the disconnect (if applicable) on the control panel to the ON position. Power is applied to the voltage line fuses, line side of the control power switch.

2.Turn the control power switch to the ON position. Power is applied to the temperature control, programmable relay and dew point controller. The valve will move to the start position as follows:

a.The valve motor rotates until the cam switch makes 2 transitions.

b.If the cam switch does not make a transition within 10 seconds, a valve motor fault is generated. “VALVE MTR” is displayed on the relay screen, the alarm light is activated. The valve motor, heaters, and blower shut off.

To restart the dryer, cycle control power to deactivate the alarm light and restart the valve motor sequence.

Note: The relay screen which contains the Alarm Display Messages is located inside the controller enclosure. For a list of Alarm Display Messages, see Page 32.

WARNING! Do not attempt to check the Alarms on the Controller located within the unit enclosure unless you are a qualified electrician!

c.The valve will normally complete one full cycle (revolution).

If the drying process shuts down due to an alarm, the dryer has been setup to have the following operational features:

•The bed in process at power-down will remain in process.

•The bed in regeneration at power-down will remain in regeneration.

•The regeneration timing cycle will restart from the beginning.

3.Once the control power is on and no fault conditions exist, the dryer will start as follows:

a.The process/regen blower is started.

b.The process heater is turned on and controlled by the E5CN controller.

c.The regen heater is turned on and the regeneration timing sequence is initiated. For default timing settings for regeneration, see the table below.

	Model	Heating	Cooling
	15 cfm	15	50
	30 cfm	15	50
	30 cfm
	60 cfm	15	50

15, 30, & 60 cfm Compact Dryers

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Contents SDA Series 15-60cfm Compact Dehumidifying Dryers In the Event of Shipping Damage Shipping InformationUnpacking and Inspection If the Shipment is Not CompleteCHAPTER 1 SAFETY Table of ContentsCHAPTER 3 INSTALLATION CHAPTER 2: FUNCTIONAL DESCRIPTIONCHAPTER 7 APPENDIX CHAPTER 5 MAINTENANCECHAPTER 6 TROUBLESHOOTING 15, 30, & 60 cfm Compact DryersSafety Symbols Used in this Manual Chapter 1 Safety1-1How to Use This Manual Read Operation and Installation Manual 1-2Safety Tag Information1-3Warnings and Precautions Dryer Safety TagsOperator Responsibility 1-4ResponsibilityGeneral Responsibility REMEMBER Maintenance Responsibility Reporting a Safety Defect2-2General Description Chapter 2 Functional Description2-1Models Covered in This Manual What is desiccant?Mechanical Features 2-3Standard FeaturesFigure 1 Typical Dryer Air Flow Schematic Electrical FeaturesController 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 Checking for Proper Blower Rotation 3-4Setup ProceduresThree-PhaseModels Floor Mount ModelsDrying Hopper Air Trap Considerations 3-5Initial Start-upInstalling Water Lines Optional AftercoolerAuto-Tuningthe Dryer Shutting Down the DryerSwitches Chapter 4 Operation4-1Controller Description and Operation Indicator LightsProcess Air Temperature Controller PV SVLit when Control Output 2 is on. Not used in IndicatorLit when Control Output 1 is on. The Out1 IndicatorAdjustment Level Setting the Process Air TemperatureIndicator IndicatorDescription IndicatorName Entering Operating Parameters to Select ModesOptional Setting the High Dew Point AlarmProcess Air Dew Point Display 4-2Dryer Operation Procedures Controller OperationAlarm Display Messages Valve Motor Time-Out Blower Overload No Alarms HIGH TEMP VALVE MTRHEAT COOL 50 SYSTEM NORMAL PROC BLWREvery Day Chapter 5 Maintenance5-1Preventative Maintenance Schedule Every weekServicing Process Air Filters 5-2Preventative MaintenanceFigure 9 Air Filter Location and Disassembly VacuumingSymptoms of Worn Desiccant 5-3Corrective MaintenanceCleaning with Compressed Air Servicing the Dew Point Monitor+ FIRST AID + Replacing Worn DesiccantFigure 10 Desiccant Bed Location and Disassembly Figure 11 Required Desiccant Amounts 13X TypeWARNING! Hazardous electrical current present ProceduresReplacing the Process/Regeneration Heater Replacement Procedures Replacing/Cleaning the Cooling CoilFigure 13 Cooling Coil Location and Disassembly If used as an after-Cooler 3 to 4 GPM @ 85F15, 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 HIGH TEMP PROC BLWRAlarm Message CauseAlarm Message VALVE MTRUsing a Thermocouple CauseWarranty Specifications 7-1WarrantyChapter 7 Appendix Warranty RestrictionsAnnex B Information 7-2Technical SpecificationsCustomer Responsibilities Regeneration MoistureMake Up Air Exhaust 7-3Drawings and DiagramsAftercooler Design Specifications High Pressure Peripheral BlowerExhaust Figure 16 Low Heat Model 120F to 250F Air FlowAfter-Cooler Regeneration MoistureMake Up Air High Pressure Peripheral Blower15, 30, & 60 cfm Compact Dryers 7-4Spare Parts ListDRYER SPARE PARTS LIST 15, 30, 60 cfm Models Mechanical Components15, 30, & 60 cfm Compact Dryers HI-COREDESICCANT DRYER 15/30/60 CFM UNITSDescription 15, 30, & 60 cfm Compact Dryers30 CFM Description 15, 30, & 60 cfm Compact Dryers60 CFM 120V CONTROL COMMON PARTS 15, 30, & 60 cfm Compact DryersA0571672 Description7-5Returned Material Policy Credit ReturnsWarranty Returns 7-6Dryer Identification Serial Number Tag7-7Technical Assistance Service DepartmentContract Department 15, 30, & 60 cfm Compact Dryers