Base Section Electrical Malfunctions | American Dryer Corp MLS-460

•Tumbler (basket) target...this target is attached to the outside of the basket

•Stop motion detector module in the tumbler (basket) section on the left front side

•Circuit Wiring; refer to MLS-460 Main Panel Wiring Diagram

•MLS-460 Tumbler (Basket) Junction Box Wiring Diagram

C.BASE SECTION ELECTRICAL MALFUNCTIONS

INTRODUCTION

There are four (4) electrical components associated with the MLS-460 base section. These components are interfaced to a junction box, and connect to the main electrical enclosure through a disconnect cable. The “Base Junction Box” is located on the right rear of the base section, and title of its wiring diagram is “MLS-460 Base Electrical Junction Box Wiring Diagram.” The base section of electrical components provide:

•Tumbler (basket) position information (Front Up - Level - Rear Up)

•Lint chamber pressure information

•Lint screen mechanism functioning okay information

The following information will provide a means to respond to “Base” associated Fault Messages, and to verify ALL the electrical signals associated with the Base Section. Refer to the MLS-460 Base Junction Box for a detailed wiring diagram.

1.0Base Section Electrical Components a. Front Door Switch

The “Front Down Sensing Switch” is located on the left side of the MLS-460 base and comprises of four

(4)parts; head, arm, body, and cord grip device. The head is a rotating type, with a roller arm attached for switch actuation. The body contains a double-pole-double-throw (DPDT), normally open switch. LS has two (2) electrical functions, A and B.

“A” provides a “rear down” signal to the PLC (Programmable Logic Controller)

“B” is used as an electrical interlock to the “Rear Up Signal”

b. Rear Down Switch - LS2

The “Rear Down Sensing Switch” is located on the left side of the MLS-460 base, and comprises of four

(4)parts; head, arm, body, and cord grip device. The head is a rotating type, with a roller arm attached for switch actuation. The body contains a double-pole-double-throw (DPDT), normally open switch.

“A” provides a “rear down” signal to the PLC (Programmable Logic Controller)

“B” is used as an electrical interlock to the “Front Up Signal”

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American Dryer Corp MLS-460 manual Base Section Electrical Malfunctions, Introduction

Contents

MLS-460 Installation/Operator’s Manual Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Power Malfunctions ServiceMotors Important Information Section Explosion could Result Safety PrecautionsPage Specifications SPECIFICATIONS/DIMENSIONS Dimensions Reassembly of Dryer Installation ProceduresReattach 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 Disconnect External 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 Information Shut Down Instructions Preparation for Operation PRE START-UP Clean any lint accumulation from inside the heat console Routine MaintenanceCleaning Suggested Cleaning Schedule Monthly 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 SERVICE/PARTS InformationParts Returning Warranty Parts Warranty InformationReturning Warranty Cards WarrantyPage Troubleshooting Table of Contents Number Troubleshooting Verify red Sprinkler Power on main panel to be illuminated Power MalfunctionsMain Disconnect Will Not Turn On If NO, refer to paragraph #1 above Sprinkler circuit may be defective Machine Main Power Shuts Down Blue Indicator Off Sprinkler Circuit Components 3CR CRB Not Used Sprinkler 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 Malfunctions Drum 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 Controller Probable 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 = Unload Tumbler Forward Pendant --- PB1 Wiring Diagram Fuse 4 on Main Electrical Panel Faulty SwitchesWiring Back to PLC Programmable Logic Controller MLS-460 Pendant Assembly Diagram Disconnect Plug Faulty Switch Wiring Back to TB1 Temperature SensingAnother Emergency Stop E-Stop Button Exhaust RTD Resistive Temperature Device Sens1 Temperature Sensing Component Descriptions With the control voltage OFF Motors Circuit Wiring to the Analog Input Module Verify current setting Check circuit Check motor Retest LS-460 Idling LS-460 Running ADC113073 1- 01/14/00-15