American Dryer Corp MLS-460 manual PLC OUT PIN 1 = Drum Reverse PLC OUT PIN 2 = Drum Forward

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3a) The L.E.D.s illuminating on the PLC (Programmable Logic Controller) indicate that the wiring to the PLC is correct.

•Check that the respective outputs of hte PLC are also illuminating when the FORWARD and REVERSE buttons are being pressed.

PLC OUT PIN 1 = DRUM REVERSE PLC OUT PIN 2 = DRUM FORWARD

•If output indicators are functional, however the tumbler (basket) doesn’t respond: Check wiring on the MAIN ENCLOSURE PANEL (Refer to the MLS-460 MAIN PANEL WIRING DIAGRAM)

3b) L.E.D.s (light emitting diodes) are not illuminating correctly on the PLC (Programmable Logic Controller) indicate that the signal(s) to the PLC inputs are missing.

•Check FUSE 2 on the main electrical panel

•Check wiring back to the tumbler (basket) junction box

•Check wiring back to the rear controls

•Refer to the blueprints:

•Main electrical panel diagram

•Tumbler junction box wiring diagram

•Rear panel controls wiring diagram

•Retest

0 UNLOAD 1 Selection

e. PROBABLE CAUSES;

1)Rear panel disconnect plug

2)Defective switch

3)Wiring back to main electrical enclosure f. POSSIBLE SOLUTIONS;

1)If the “O UNLOAD 1” switch doesn’t respond when selected:

•Verify that the rear panel controls disconnect plug is indeed connected. This disconnect plug allows for the removal of the rear control panel for dryer servicing

2)Defective “O UNLOAD 1” Selector Switch

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Contents MLS-460 Installation/Operator’s Manual Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Service Power MalfunctionsMotors Important Information SectionExplosion could Result Safety PrecautionsPage Specifications SPECIFICATIONS/DIMENSIONSDimensions Installation Procedures Reassembly of DryerReattach The Control Pendant Arm Reassembly Instructions For Dryers Shipped In Three 3 Pieces Page Location Requirements Air Front Tilt Piston and Sprinkler Lines Internal AIR, ELECTRICAL, and Water ConnectionsPage Electric Tumbler Basket Motors Temperature Probe, Base, and Tumbler Basket DisconnectsPage Pendant Left Drum Motor Tumbler Basket Junction Box DisconnectExternal Supply Connections Condensate return line must be 1-1/4 pipe Exhaust Ducting Page Electrical Requirements Electrical RequirementsLatest Edition MLS-460 Steam Electrical Service SpecificationsPage Fresh AIR Supply Requirements Steam Requirements Steam InformationShut Down Instructions Preparation for Operation PRE START-UPClean any lint accumulation from inside the heat console Routine MaintenanceCleaning Suggested Cleaning ScheduleMonthly Tumbler Basket Support and Drive System Component System DescriptionsPage Page Main AIR Blower and Heat Reclaimer System Heat Reclaimer Adjustment Remove Electricity from the Unit Compressed AIR System Page Safety Devices Door Open SERVICE/PARTS Information ServiceParts Returning Warranty Parts Warranty InformationReturning Warranty Cards WarrantyPage Troubleshooting Table of Contents Number TroubleshootingPower Malfunctions Verify red Sprinkler Power on main panel to be illuminatedMain Disconnect Will Not Turn On If NO, refer to paragraph #1 above Sprinkler circuit may be defective Machine Main Power Shuts Down Blue Indicator OffSprinkler Circuit Components 3CR CRB Not UsedSprinkler Circuit Description Page Malfunctioning PLC Programmable Logic Controller Emergency Stop E-Stop Buttons 1, 2,Page General Description PLC Message HI-TEMP FaultPage Page Introduction Tumbler Basket Section Electrical MalfunctionsDrum Rotation Sensor PRS1 Rear Panel Control Problems Emergency Stop E-Stop Function If YES, refer to a If NO, refer to b PLC OUT PIN 1 = Drum Reverse PLC OUT PIN 2 = Drum Forward PLC OUT PIN 7 = Unload Door Open PLC OUT PIN 10 = Front UP DS1-B=LOAD Door Switch DS2-B=UNLOAD Door Switch Wiring Back the PLC Programmable Logic ControllerProbable Solutions Base Section Electrical Malfunctions Wiring Back to the PLC Programmable Logic Controller Lint Drawer Proximity SwitchesPage Probable Causes Tumbler Reverse Pendant --- PB2 Pendant Control MalfunctionsLoad Level Unload Tumbler Reverse Tumbler Forward SEL a = Load SEL B = UnloadTumbler Forward Pendant --- PB1 Wiring Diagram Fuse 4 on Main Electrical Panel Faulty SwitchesWiring Back to PLC Programmable Logic Controller MLS-460 Pendant Assembly DiagramTemperature Sensing Disconnect Plug Faulty Switch Wiring Back to TB1Another Emergency Stop E-Stop Button Exhaust RTD Resistive Temperature Device Sens1 Temperature Sensing Component DescriptionsWith the control voltage OFF Motors Circuit Wiring to the Analog Input ModuleVerify current setting Check circuit Check motor Retest LS-460 Idling LS-460 Running ADC113073 1- 01/14/00-15