American Dryer Corp MLG-460 manual

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If arcing does not occur:

Check circuitry; refer to dryer Main Panel Wiring Diagram and dryer Solenoid Junction Box Wiring Diagram.

Check transformer

Check spark igniter in burner

Refer to the ML-460 Service Manual (ADC Part No. 450023) for more information on the burner controller module and burner start-up.

Retest

5b) To check the electrical actuation of the motorized gas valve:

Shut the main gas valve to the dryer.

Open the disconnect block on TB1-64, for circuit testing. With control voltage “ON” apply a 100 VAC a line to TB1-64 “output.” THE LOWER MOTORIZED GAS VALVE “V3” SHOULD OPEN. ONCE THE “V3” IS OPEN THE SECOND MOTORIZED GAS VALVE “V2” SHOULD OPEN.

NOTE: REMOVING THE VOLTAGE AT ANY TIME WILL CLOSE THE VALVES INSTANTLY.

If valves operate properly, close disconnect on TB1-64.

If the valves do not open correctly;

Check circuitry; refer to dryer Main Panel Wiring Diagram and MLG-464 Solenoid Junction Box Wiring Diagram.

Check motorized valves

Refer to Section VI, Part D, Gas Burner and Ignition System on page 37 thru page 45.

Retest

6b) To verify that MS4 AUX is operational:

Start a drying cycle, MS4 contactor should pull in, and start the LINT FAN and LINT SCREEN motors. Simultaneously MS4 AUZ1 should close, enabling MS8 Coil (Burner Fan Motor) to be asserted by burner controller module. Does MS4 pull in?

If MS4 pulls in go to paragraph #7b

If MS4 “DOES NOT” pull in;

Check that PLC (Programmable Logic Controller) OUTPUT 3 L.E.D. (light emitting diode) is “ON”

Check that fuse #14 L.E.D. (light emitting diode) “IS NOT” lit

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Contents MLG-460 Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Service Parts Returning Warranty Cards Parts Returning Warranty PartsTroubleshooting TOC Section Safety Precautions What to do if YOU Smell GASPage Specifications SpecificationsSpecifications Installation Procedures Reassembly of DryerPage Page Location Requirements Internal AIR, Electric and Water Connections Page Page Page Page Page Left Drum Motor External Supply Connections Page Page Electrical Requirements Electrical RequirementsMLG-460 Page Fresh AIR Supply Requirements PRE START-UP Preparation for OperationRoutine Maintenance CleaningMonthly Component System Descriptions Page Page Main AIR Blower and Heat Reclaimer System Page Compressed AIR System Page Page GAS Burner and Ignition System Switch #2 Intermittent Pilot Page Page Page Page Page Page Page Safety Devices Door Open Service PartsReturning Warranty Cards WarrantyReturning Warranty Parts Page Troubleshooting Power Malfunctions Possible SolutionsProbable Causes No Control Power Blue Light Off Machine Main Power Shuts Down Blue Indicator Off 2CRB Sprinkler Circuit Description Page Front Panel Blue Light and RED Light on Possible Solutions General Description Unless the Water Valve to the Sprinkler is ClosedBurner Controller Input Signal Components Burner IgnitionIntroduction Burner Section Input Circuit Component DescriptionLoad Door Switch DS1B Output Signal Component Description Stop Detector Relay Contact SMD noGAS Fault Message gas system only Heater Fault Message Possible Solutions Page Page AIR Fault Message HI-TEMP Fault Message Possible Solutions Drum Fault Message Page Tumbler Basket Section Electrical Malfunctions Tumbler Basket Section Electrical ComponentsFollowing is for 2-Door Models only Rear Panel Control Problems Probable Causes Possible Solutions Unload 1 Selection Probable Causes PLC OUT PIN 7 = Unload Door Open PLC OUT PIN 10 = Front UPDoor Open Problem Drum Fault Message Malfunction Probable Causes Page Front Door Switch Rear Down Switch LS2Lint Drawer Proximity Switches Base Section Electrical MalfunctionsLint Chamber Pressure Switch PS3 Tumbler Basket Tilt Problems Level FaultProbable Solutions Page Lint Screen Mechanism Problem Screen Fault Lint Chamber Air Pressure Problem AIR Fault Pendant Control Malfunctions Pendant Electrical ComponentsVerify Pendant Electrical Signals ML-460 Pendant Assembly Diagram Temperature Sensing Page Temperature Measurement and Sensing Problems Circuit Wiring to the Analog Input Module MotorsMotor Actuation Problems Probable Causes Motor Protection Device DescriptionsScreen Fault Motor FaultGAS Fault AIR Fault