American Dryer Corp MLG-460 manual

Page 34

3.Tumbler and Basket Drive System

There are two (2) 5 HP (3.73 kw) tumbler drive motors. Each motor drives one of the 2-inch (5.08 cm) diameter tumbler drive shafts, and the motors spin simultaneously so that all four (4) sets drive wheels work together to spin the tumbler (basket).

Each motor is connected to the drive shaft by two (2) “A” section V-belts, driving a shaft-mounted (5.6 to 1 ratio) gear reducer. This produces a tumbler shaft speed of 200 RPM to 205 RPM and a tumbler (basket) speed of 31.5 RPM. Proper tension is maintained on the V-belts by tightening the gear reducer turnbuckle support. The oil in each gear reducer must be replaced every six (6) months by 1.4 liters of I.S.O. viscosity Grade 460 gear oil.

4.Servicing the Drive System

a.Removing a Drive Wheel

The drive wheels a removed through the front and back panels of the dryer, not through the slides. The front loading door and back loading door panels are hinged at the top. Remove the bolts holding these panels to tumbler section frame and swing the panel out. The two (2) 1/4-inch poly-flo tubes connected to the load door piston have to be removed to allow the panel to swing up far enough out to get access to the drive wheels. Likewise, the following electrical disconnections must be performed (refer to page 31).

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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 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 PartsWarranty 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 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 MalfunctionsTumbler 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 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