American Dryer Corp MLG-460 manual Pendant Control Malfunctions, Pendant Electrical Components

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E. PENDANT CONTROL MALFUNCTIONS

Introduction

There are four (4) electrical switches associated with the ML-460 Pendant assembly. These components are interfaced to TB1 of Main Electrical Enclosure through two (2) disconnects and two (2) junction boxes.

The Pendant Assembly is remote control for Loading or Unloading the dryer. The functions provided are:

•LOAD - LEVEL - UNLOAD

•TUMBLER (Basket) REVERSE

•TUMBLER (Basket) FORWARD

•EMERGENCY STOP (E-Stop)

The following information will provide a means to respond to “Pendant” malfunctions, and to verify ALL its electrical signals. Refer to the following dryer Pendant associated wiring diagrams for detailed assembly and wiring information.

•PENDANT ASSEMBLY DIAGRAM

•ANNUCIATOR, PENDANT, and UPPER RTD’S (Resistive Temperature Device) WIRING DIAGRAM.

1.Pendant Electrical Components

•Load - Level - Unload -A and B

•Tumbler (Basket) Reverse Switch - PB2

•Tumbler (Basket) Forward Switch -PB1

•EMERGENCY STOP (E-Stop) Switch - PB6

There are two (2) normally open electrical switches associated with this switch function, that are actuated by a three (3) position selector.

SEL A = LOAD

SEL B = UNLOAD

Once this switch turned to “LOAD”, the dryer’s front doors will open, and depending upon system configuration, will either tilt back or remain level.

•If the dryer was configured to Unload from the front: Any time this switch is turned to “UNLOAD,” he dryer’s front doors will open, and its tumbler (basket) will tilt to the front.

•If the dryer was configured to Unload from the rear: Anytime this switch turned to “UNLOAD,” nothing will happen. ALL unloading functions will be transferred to the rear Control Panel.

•TUMBLER (Basket) REVERSE “PENDANT” - PB2

This push button comprises of one normally open switch, and is mechanically interlocked with the Tumbler (Basket) Forward Push-button.

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Contents MLG-460 Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Returning Warranty Cards Parts Returning Warranty Parts Service PartsTroubleshooting TOC Section What to do if YOU Smell GAS Safety PrecautionsPage Specifications SpecificationsSpecifications Reassembly of Dryer Installation ProceduresPage 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 Preparation for Operation PRE START-UPCleaning Routine MaintenanceMonthly 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 Parts ServiceWarranty Returning Warranty CardsReturning Warranty Parts Page Troubleshooting Possible Solutions Power MalfunctionsProbable 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 Unless the Water Valve to the Sprinkler is Closed General DescriptionBurner Section Input Circuit Component Description Burner Controller Input Signal ComponentsBurner Ignition IntroductionLoad Door Switch DS1B Stop Detector Relay Contact SMD no Output Signal Component DescriptionGAS 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 Components Tumbler Basket Section Electrical MalfunctionsFollowing is for 2-Door Models only Rear Panel Control Problems Probable Causes Possible Solutions PLC OUT PIN 7 = Unload Door Open PLC OUT PIN 10 = Front UP Unload 1 Selection Probable CausesDoor Open Problem Drum Fault Message Malfunction Probable Causes Page Base Section Electrical Malfunctions Front Door SwitchRear Down Switch LS2 Lint Drawer Proximity SwitchesTumbler Basket Tilt Problems Level Fault Lint Chamber Pressure Switch PS3Probable Solutions Page Lint Screen Mechanism Problem Screen Fault Lint Chamber Air Pressure Problem AIR Fault Pendant Electrical Components Pendant Control MalfunctionsVerify Pendant Electrical Signals ML-460 Pendant Assembly Diagram Temperature Sensing Page Temperature Measurement and Sensing Problems Motors Circuit Wiring to the Analog Input ModuleMotor Protection Device Descriptions Motor Actuation Problems Probable CausesAIR Fault Screen FaultMotor Fault GAS Fault