American Dryer Corp MLG-460 manual Tumbler Basket Section Electrical Malfunctions

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C. TUMBLER (Basket) SECTION ELECTRICAL MALFUNCTIONS

Introduction

There are a number of electrical components associated with the tumbler (basket) section. These components are ALL interfaced to the tumbler junction box, and connected to the main electrical enclosure through a disconnectable cable.

The “tumbler junction box” is located on the left side of the tumbler (basket) section, in the same area as the left drum motor. The title of the wiring diagram for the tumbler (basket) section is “Tumbler Electrical Junction Box Wiring Diagram.”

The tumbler (basket) section electrical components provide:

•FRONT and REAR DOOR INFORMATION

•DRUM ROTATION INFORMATION

•REAR PANEL CONTROLS FOR UNLOADING

•EMERGENCY STOP (E-Stop)

The following information will provide a means to respond to fault messages associated with the tumbler (basket) section, and verify ALL the electrical signals associated with it.

1.Tumbler (Basket) Section Electrical Components

a)Load Door Switch - DS1

The load door switch is located on the left side of the dryer’s front doors and is comprised of four (4) parts; head, arm, body, and cord grip device. The head is a rotating type, with a spring arm attached for switch actuation. The body contains a double-pole-double-throw (DPDT), normally open switch. DS1 - has two (2) electrical functions, “A” and “B.”

b)Unload Door Switch - DS2

The unload door switch is located on the right side of the dryer’s rear doors and is comprised of four (4) parts; head, arm, body, and cord grip device. The head is a rotating type, with a spring arm attached for switch actuation. The body contains a double-pole-double-throw (DPDT), normally open switch. DS1 - has two (2) electrical functions, “A” and “B.”

“A” provides rear door position signal to the PLC (Programmable Logic Controller). “B” is a rear interlock to the burner controller circuit.

c)Drum Rotation Sensor – PRS1

The drum rotation sensor is an inductive pick up device located on the left wrapper of the tumbler (basket) section. Its function is to sense a metal “target” attached to the “basket” as it rotates. The mechanical adjustment of this device, (distance from the target) is crucial (3/16” maximum from target).

CAUTION: DO NOT MECHANICALLY ADJUST THE ROTATIONAL SENSOR SO FAR IN TO BE HIT BY THE ROTATING TARGET, PERMANENT DAMAGE OF THE SENSOR WILL OCCUR.

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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 ClosedIntroduction Burner Controller Input Signal ComponentsBurner Ignition 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 Lint Drawer Proximity Switches Front Door SwitchRear Down Switch LS2 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 DescriptionsGAS Fault Screen FaultMotor Fault AIR Fault
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