American Dryer Corp MLG-460 manual Troubleshooting

Page 55

SECTION IX

TROUBLESHOOTING

WARNING: YOU MUST DISCONNECT and LOCKOUT THE ELECTRICAL SUPPLY and THE GAS SUPPLY BEFORE ANY COVERS or GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING, ADJUSTING, INSTALLATION OR TESTING OF ANY EQUIPMENT per OSHA (Occupational Safety and Health Administration) STANDARDS.

The information provided will help isolate the most probable components associated with the difficulty described. The experienced technician realizes, however, that a loose connection, or broken or shorted wire may be at fault where electrical components are concerned. DO NOT necessarily suspect the component itself. Electrical parts should always be check for failure before being returned to the factory.

IMPORTANT: When replacing blown fuses, the replacement must be of the exact rating as the fuses being replaced. The information provided should not be misconstrued as a handbook for use by an untrained person in making repairs.

WARNING: ALL SERVICE AND TROUBLESHOOTING SHOULD BE PERFORMED BY A QUALIFIED PROFESSIONAL or SERVICE AGENCY.

WARNING: WHILE MAKING REPAIRS, OBSERVE ALL SAFETY PRECAUTIONS DISPLAYED ON THE DRYER or SPECIFIED IN THIS MANUAL.

The following information assumes that the reader has familiarized himself with the introduction to this manual, understands the dryer operation, and has knowledge of the programming features of the dryer.

 

 

PAGE

TROUBLESHOOTING TABLE OF CONTENTS

NUMBER

A. POWER MALFUNCTIONS

52

B. BURNER IGNITION

61

C.

TUMBLER (BASK ET) ELECTRICAL MALFUNCTIONS

74

D.

BASE SECTION ELECTRICAL MALFUNCTIONS

82

E.

PENDENT CONTROL

87

F.

TEMPERATURE SENSING

90

G.

MOTORS

93

H.

PLC (PROGRAMMABLE LOGIC CONTROLLER) MESSAGES

95

51

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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