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American Dryer Corp WDA-385 service manual J. Temperature Sensors, K. Sail Switch

Models: WDA-385

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J. Temperature Sensors

J. Temperature Sensors

The temperature sensor used in a transducer that converts heat into microamps that the computer board then uses to calculate the temperature.

K. Sail Switch

The sail switch consists of a round damper plate on a lever arm which acts like an actuator for a micro-switch. When the air blower comes on, it draws air through the burner. This creates a negative pressure inside the burner box, and this negative pressure pulls in the round damper which activates the sail switch. If there is improper airflow, the damper will not pull in, preventing the burner from coming on. Improper air flow can be caused by improperly designed exhaust ducting, where the duct run is too long or has too many sharp bends on it. It can also be caused by a lack of make up air. Sail switch is located in the back of the burner.

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American Dryer Corp WDA-385 service manual J. Temperature Sensors, K. Sail Switch

Contents

Service Manual ADG-385/WDA-3851996 thru 121396MFM/tfRetain This Manual In A Safe Place For Future Reference “IMPORTANT NOTE TO PURCHASER”VERIFY PROPER OPERATION AFTER SERVICING DRYERS SHOULD NEVER BE LEFT UNATTENDED WHILE IN OPERATIONCHILDREN SHOULD NOT BE ALLOWED TO PLAY ON OR NEAR THE DRYERS CHILDREN SHOULD BE SUPERVISED IF NEAR DRYERS IN OPERATIONFOR YOUR SAFETY Table of Contents MaintenanceInstallation Requirements Important InformationTrouble Shooting Technical InformationSECTION A. Safety PrecautionsImportant Information A. Cleaning Routine MaintenanceSECTION B. Adjustments C. LubricationA. Enclosure, Air Supply, and Exhaust Requirements Installation RequirementsSECTION C. Operational Service Check Procedure B. Electrical and Gas RequirementsPage Description of Parts A. Control PanelB. Control Box C. Coin Box and VaultE. Lint Coop D. Main Door SwitchF. Tumbler G. Tumbler Bearing and Pulley Arrangement I. Motor AssemblyH. Idler Bearing J. Temperature Sensors K. Sail SwitchM. Non-Reversing Contactor 3Ø Motor L. Motor Contactor 1Ø MotorN. Hi-Limit Thermostat Servicing To Replace Control Panel AssemblySECTION To Replace Computer To Replace Keypad refer to illustration aboveTo Remove Optic Switch To Replace Coin AcceptorTo Replace Motor Contactor 2-Pole, 24VAC To Replace Microprocessor Temperature Sensor ProbeNOTE DO NOT remove screws A. Burner Controls Gas To Replace Spark Ignitor To Replace Gas ValveTo Replace Main Burner Orifices See Chart On Following Page To Test and Adjust Gas Water Column PressureTo Replace Burner Tubes NEVER TEST FOR LEAKS WITH A FLAMETo Replace DSI Module B. Thermostats and Temperature SensorTo Replace Hi-Limit Thermostat 330º To Remove The Temperature Sensor or High Heat Protector C. Sail Switch Assembly To Replace Sail SwitchTo Adjust Sail Switch To Replace Main Door Switch Steel DoorD. Front Panel and Main Door Assemblies TO REPLACE MAIN DOOR ASSEMBLY STEEL DOORTO INSTALL NEW MAIN DOOR GLASS To Replace Front Panel NOTE Identify location of each wire for correct reinstallationTo Replace Tumbler Pulley E. Tumbler and Bearing Assembly Remove backguard to access assemblyNOTE Check belt alignment before operating dryer IMPORTANT LOCTITE NOW BEING USED To Replace Rear Tumbler BearingNOTE Check alignment of pulleys before operating dryer To Replace The Front Tumbler Bearing F. Idler and Bearing Assembly To Replace Idler PulleyRemove backguard to access assembly NOTE Check tension and alignment of belts before operating dryerTo Replace Idler Bearing G. Drive PulleyH. Tumbler basket Tumbler Alignment vertical Tumbler Alignment lateralTo Replace The Tumbler and/or Tumbler Support NOTE Identify location of each wire for correct re-installationIMPORTANT LOCTITE NOW BEING USED LOCTITE ADHESIVE HAS BEEN USED TO SECURE SET SCREWS AND BEARINGSIN PLACE. ONCE SET SCREWS HAVE BEEN REMOVED, A GEAR PULLER MAY BE NECESI. V-Belts refer to illustration in Sections I, J and K V-Belt Tension Adjustment-Tumbler To IdlerV-Belt Tension Alignment - Motor To Idler To Replace V-Belts J. Motor To Replace MotorK. Impeller L. Lintscreen To Replace LintscreenTrouble Shooting A. Phase 5 Coin System DiagnosticsDiagnostic L.E.D. Display Failure Codes SECTIONL.E.D. Display Indicators Microprocessor Controller Relay Output L.E.D. IndicatorsNOTE If the dryer is started the L.E.D. display indicator dots are on and there are no outputs heat and/or motor output L.E.D.s are off and the dOOr input L.E.D. is on, the fault is in the Phase 5 coin microprocessor controller computer itself. If the failure was elsewhere i.e., dryers door switch circuit the L.E.D. display would read dOOr if a keyboard entry was attempted. If the L.E.D. display indicators are on and the door L.E.D. input and motor/heat output L.E.D.s are on and the motor and/or heat is not active ON, then the problem is not the door switch circuit or the Phase 5 coin microprocessor controller the problem is else where in the dryer B. No Heat Condition Page C. No Start Condition D. No Display Condition Page E. dSFL Display Condition F. dOOr Display Condition A. Data Label Technical InformationSECTION B. Using A Manometer C. L.E.D. Display Codes D. Computer Logic and Wiring Diagram Diagrams for this book are as follows including ALL revisions of the number listed below B6726111- 01/08/98-50 ADC4501792* 05/21/98-50