American Dryer Corp MDG75V installation manual

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e.Open main door. The dryer must stop and ALL indicator lights on the back side of the microprocessor controller (computer) board must go out. (Refer to the illustration on the previous page.)

f.Try to restart the dryer with the main door open.

g.The microprocessor controller (computer) board’s light emitting diode (L.E.D.) display must read “DOOR.”

h.Close the main door and restart the dryer.

i.Functional check of microprocessor controller (computer) board is complete.

2.For Models With Johnson Controls Direct Spark Ignition (DSI) Module (G760) Theory Of Operation:

Start the drying cycle. When the gas burner ignites within the chosen trial for ignition time (6-seconds), the flame sensor detects gas burner flame and signals the DSI module to keep the gas valve open...as long as there is a call for heat. The DSI module will “LOCKOUT” if the gas burner flame is not sensed at the end of the trial for ignition period. The trial for ignition period will be repeated for a total of three (3) retries/ trials (the initial try and two [2] more retries/trials). If the flame is not sensed at the end of the third retry/ trial (inter-purge period of 30-seconds) the DSI module will “LOCKOUT” (L.E.D. flashes).

A steady L.E.D. indicator indicates normal operation.

No L.E.D. indicator indicates a power or an internal failure has occurred.

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Contents MDG75V Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Section Procedure for Functional Check of Replacement Important Information Receiving and HandlingSafety Precautions What to do if YOU Smell GASPage Specifications SpecificationsMDG75V Component Identification Page Installation Procedures Location RequirementsUNPACKING/SETTING UP Dryer Enclosure Requirements Fresh AIR Supply Requirements Exhaust Requirements General Exhaust Ductwork InformationPage Page Multiple common Dryer Venting Importantventingreminders Electrical Information Electrical RequirementsMust be Provided SINGLE-PHASE 1Ø Electrical Connections Leads Important a Circuit Servicing Each Dryer Must be Provided Page MDG75V GAS GAS Information Type of GAS Page Page Preparation for OPERATION/START-UP Preoperational Tests GAS Models onlyBasket Tumbler Coating Preoperational Instructions Shutdown InstructionsParts SERVICE/PARTS InformationService Suggested Cleaning Schedule Routine MaintenanceCleaning Adjustments LubricationLint Drawer Removal Troubleshooting Microprocessor Controller Computer ModelsBlower motor is not operating does not start Microprocessor controller computer display reads dSFL GAS Models only Dryer operates but is taking too long to dry Dryer is making scraping noise at basket tumbler area Data Label Information Data LabelSerial Number Procedure for Functional Check Replacement Components SectionviiiPage 113160 1 11/27/02-25