ADC ML-175, ML-190 Impellor, Lint Drawer Assembly, To Replace Fan Shaft and/or Fan Shaft Bearings

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Remove old motor pulley and bushing and place on new motor. Follow “To Replace Motor Pulley”.

Reverse these steps to replace drive motor.

To Replace Impellor Motor

(Fan Shaft Drive – 50/60 Hz Gas and Steam Models)

Discontinue electrical power to the dryer.

Remove the lint drawer.

Remove the lint door. Remove the left hand lint wall.

Loosen the four mounting bolts securing the motor. Loosen the tension bolts.

Remove V-belts. Disconnect motor wiring.

Remove the motor pulley and bushing.

Reverse these steps for installation of new motor.

To Replace Fan Shaft and/or Fan Shaft Bearings

To remove from the front, follow the instructions from “To Replace Impellor Motor”.

Remove the two left-handed jam nuts that hold the impellor to the fan shaft.

Remove the impellor, washers, and the key.

Loosen the four bolts securing the fan shaft assembly to the base of the dryer.

NOTE: Models with rear access, it may be easier to remove this plate, to remove the two rear fan shaft assembly bolts.

Remove the fan assembly through front access hole. Loosen the setscrews in each bearing.

Loosen the four flange bolts and two pillow block bolts. Using a pulley, remove the bearing needing replacing. Reverse the procedures to reinstall new bearing.

Impellor

Discontinue electrical power to the dryer.

Remove the left side lint wall if necessary for easier access.

Remove the six nuts securing the inlet cone to the blower housing.

Remove the two left-handed jam nuts that hold the impellor to the fan shaft.

Remove the impellor, washers, and the key.

Replace the impellor, key, washers, left-handed jam nuts, and the side panel.

Reestablish electrical power to the dryer.

Lint Drawer Assembly

To Replace Lint Screen

Pull out lint drawer.

Remove lint screen from lint drawer.

Drop new lint screen in place.

Slide lint drawer back into dryer.

450431 - 3

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Contents American Dryer Corporation ML-175 / ML-190Date of Purchase Model no RESELLER’S Name Serial Numbers Retain This Manual in a Safe Place for Future ReferenceTable of Contents Important Information Routine MaintenanceSafety Precautions CleaningInstallation Requirements Electrical and Gas Requirements Operational Service Check ProcedureDescription of Parts Compressed Air RequirementsSteam Coil pH Level Gas Burner AssemblyReversing Relay Panel Steam Coil and Damper SystemDrive Shaft Idler Shaft AssemblyRotational Sensor Assembly Speed Reducing ShaftTumbler Hi-Limit Main Door SwitchSail Switch Gas Models Only Burner Hi-Limit Gas Models OnlyLint Drawer Lint Drawer Switch Computer ControlsIntroduction Ignition Controls Page To Convert from Natural Gas to L.P. Gas ThermostatsTo Replace Burner Hi-Limit Thermostat Gas Models Only Front Panel and Main Door Assemblies Sail Switch Assembly Gas Models OnlyTo Replace Drive Shaft Pulleys To Install New Main Door GlassPulleys To Replace Front PanelTo Replace Drive/Idler Shaft Pillow Block Bearings Tumbler AlignmentBearings To Replace Motor PulleyTo Replace Speed Reducing Shaft Bearings Rotational Sensor Switch ReplacementTo Replace Rear Tumbler Shaft Support Wheels Belts Basket and SupportMotors To Replace Lint Screen Lint Drawer AssemblyImpellor To Replace Fan Shaft and/or Fan Shaft BearingsTroubleshooting Overload for impellor fan motor is tripping Phase 6 OPL System DiagnosticsDiagnostic L.E.D. Display Failure Codes Burner hi-limit safety thermostat is trippingD. Display Indicator Number D. Display IndicatorsFuse Main Fuse Input L.E.D. Indicator FAN Blower Output L.E.D. IndicatorAIR AIR JET Output L.E.D. Indicator Optional HT1 Heat Output L.E.D. IndicatorPhase 7 OPL System Diagnostics Example Input / Output Board L.E.D. IndicatorsTechnical Information Motor Plate High and Low VoltageTool List Using a ManometerHow To Use a Manometer Data Label450431 ADC Part No 3 06/17/08