ADC ML-190, ML-175 service manual Basket and Support, Belts, Motors

Page 18

Basket and Support

To Replace Tumbler and Tumbler Support

Discontinue electrical power to the dryer.

Follow procedure for removal of main door assembly. Follow procedure for removal of front panel assembly. Remove bearing back guard.

To remove tumbler assembly and support, loosen the two setscrews on flange bearing models or remove the Allen head bolt and Teflon® washer on models with shaft support wheels.

Remove the retaining ring from the groove of the tumbler shaft.

Remove the rotational sensor magnet from the tumbler support shaft.

Remove the tumbler and support assembly from the front of the dryer. If the tumbler cannot be removed freely, clean the shaft area and spray WD-40 or similar lubricant. With a block of wood against the shaft end, strike the block of wood with a hammer or mallet to move the shaft past any burrs made by the setscrews.

IMPORTANT: Never strike the shaft directly with a hammer.

Reverse these steps for installation of new tumbler and tumbler support.

Reestablish electrical power to the dryer.

V-Belts

(See illustrations in “Pulleys” section)

V-Belts should have proper tension. If the pulleys are not properly aligned, excessive belt wear will result. Proper belt tension will allow 1/2” displacement under normal thumb pressure at mid span of belt.

NOTE: Belts must always be replaced in pairs (matched sets).

V-Belt Replacement

(Drive Shaft To Speed Reducing Shaft)

Discontinue electrical power to the dryer. Remove the lint drawer.

Remove the lint door.

Loosen two bolts securing rear pillow block bearing on the drive shaft.

Loosen adjustment bolt that is securing the rear pillow block bearing of the drive shaft.

Loosen two bolts securing rear speed reducing shaft bearing.

Loosen adjustment bolt supplying pressure to the rear bearing on the speed reducing shaft.

Remove old V-belts.

Reverse these steps to install new V-belts.

NOTE: After tensioning the V-belts, check to make sure both the drive shaft and speed reducing are parallel or level to the base of the dryer.

V-Belt Replacement

(Motor To Speed Reducing Shaft)

Discontinue electrical power to the dryer. Remove the lint drawer.

Remove the lint door.

Loosen two bolts securing front bearing on speed reducing shaft.

Loosen tension bolt that is under the front bearing of the speed reducing shaft.

Remove the V-belts.

Replace V-belts by reversing the above procedures.

V-Belt Replacement

(From The Blower Motor To The Fan)

Loosen the four bolts securing the motor to the base of the dryer.

Loosen the tension bolts. Remove old V-belts.

Reverse these steps to replace V-belts.

NOTE: Always replace V-belts in pairs.

Motors

To Replace Drive Motor

Discontinue electrical power to the dryer.

Remove the lint drawer. Remove the lint door. Remove the left lint wall.

Remove the drive V-belts. Follow V-belt replacement from motor to speed reducing shaft.

Loosen the four bolts securing the motor to the base of the dryer.

Disconnect the motor wiring.

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American Dryer Corporation

450431 - 3

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Contents ML-175 / ML-190 American Dryer CorporationRetain This Manual in a Safe Place for Future Reference Date of Purchase Model no RESELLER’S Name Serial NumbersTable of Contents Cleaning Routine MaintenanceSafety Precautions Important InformationInstallation Requirements Compressed Air Requirements Operational Service Check ProcedureDescription of Parts Electrical and Gas RequirementsSteam Coil and Damper System Gas Burner AssemblyReversing Relay Panel Steam Coil pH LevelSpeed Reducing Shaft Idler Shaft AssemblyRotational Sensor Assembly Drive ShaftBurner Hi-Limit Gas Models Only Main Door SwitchSail Switch Gas Models Only Tumbler Hi-LimitLint Drawer Switch Computer Controls Lint DrawerIntroduction Ignition Controls Page Thermostats To Convert from Natural Gas to L.P. GasTo Replace Burner Hi-Limit Thermostat Gas Models Only Sail Switch Assembly Gas Models Only Front Panel and Main Door AssembliesTo Replace Front Panel To Install New Main Door GlassPulleys To Replace Drive Shaft PulleysTo Replace Motor Pulley Tumbler AlignmentBearings To Replace Drive/Idler Shaft Pillow Block BearingsRotational Sensor Switch Replacement To Replace Speed Reducing Shaft BearingsTo Replace Rear Tumbler Shaft Support Wheels Basket and Support BeltsMotors To Replace Fan Shaft and/or Fan Shaft Bearings Lint Drawer AssemblyImpellor To Replace Lint ScreenTroubleshooting Burner hi-limit safety thermostat is tripping Phase 6 OPL System DiagnosticsDiagnostic L.E.D. Display Failure Codes Overload for impellor fan motor is trippingD. Display Indicators D. Display Indicator NumberHT1 Heat Output L.E.D. Indicator FAN Blower Output L.E.D. IndicatorAIR AIR JET Output L.E.D. Indicator Optional Fuse Main Fuse Input L.E.D. IndicatorPhase 7 OPL System Diagnostics Motor Plate High and Low Voltage Input / Output Board L.E.D. IndicatorsTechnical Information ExampleData Label Using a ManometerHow To Use a Manometer Tool List450431 ADC Part No 3 06/17/08
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