ADC ML-175, ML-190 service manual Installation Requirements

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Daily

(Beginning) of each work shift.

Clean lint from the drawer/screen. Inspect lint screen and replace if torn.

Weekly

Clean lint accumulation from lint chamber, thermostat, and microprocessor temperature sensor (sensor bracket) area.

! WARNING

To avoid the hazard of electrical shock, discontinue electrical supply to dryer.

Steam Dryers

Clean steam coil fins using compressed air and a vacuum cleaner with brush attachment.

NOTE: When cleaning steam coil fins, be careful not to bend the fins. If fins are bent, straighten by using a fin comb, which is available from local air-conditioning supply houses.

90 Days

Remove lint from tumbler, drive motors, and surrounding areas. Remove lint from gas valve burner area with a dusting brush or vacuum cleaner attachment.

NOTE: To prevent damage, avoid cleaning and/or touching ignitor/flame-probe assembly.

Remove lint accumulation from inside control box and at rear area behind control box.

6 Months

Inspect and remove lint accumulation in customer furnished exhaust ductwork system and from dryer’s internal exhaust ducting.

! WARNING

The accumulation of lint in the exhaust ductwork can create a potential fire hazard.

Do not obstruct the flow of combustion and ventilation air. Check customer furnished back draft damper in exhaust ductwork. Inspect and remove any lint accumulation, which can cause damper to bind or stick.

NOTE: A back draft damper that is sticking partially closed can result in slow drying and shut down of the heat circuit safety switches or thermostats.

When cleaning dryer cabinet(s), avoid using harsh abrasives. A product intended for the cleaning of appliances is recommended.

Adjustments

7 Days After Installation and Every 6 Months

Inspect bolts, nuts, screws, (bearing setscrews), nonpermanent gas connections (unions, shutoff valves, orifices, and grounding connections). Motor and drive belts should be examined. Cracked or seriously frayed belts should be replaced. Tighten loose V-belts when necessary. Complete operational check of controls and valves. Complete operational check of all safety devices (door switch, lint drawer switch, sail switch, burner and hi-limit thermostats).

Lubrication

The fan shaft bearings should be lubricated every three months. Use Shell Alvania #2 or its equivalent. The motor bearings, idler bearings and under normal/most conditions the tumbler bearings are permanently lubricated. It is physically possible to re-lubricate the tumbler bearings if you choose to do so even though this practice is not necessary. Use Shell Alvania #2 or its equivalent. The tumbler bearings used in the dryer do not have a grease fitting. Provisions are made in the bearing housing for the addition of a grease fitting, which can be obtained elsewhere, or from ADC by ordering kit P/N 882159, which includes two fittings.

Installation Requirements ____________

Installation should be performed by competent technicians in accordance with local and state codes. In the absence of these codes, the installation must conform to applicable American National Standards: ANSI Z223.1-LATEST EDITION (National Fuel Gas Code) or ANSI/NFPA NO. 70- LATEST EDITION (National Electrical Code) or in Canada, the installation must conform to applicable Canadian Standards: CAN/CGA-B149.1-M91 (Natural Gas) or CAN/ CGA-B149.2-M91 (L.P. Gas) or LATEST EDITION (for General Installation and Gas Plumbing) or Canadian Electrical Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION (for Electrical Connections).

Enclosure, Air Supply,

and Exhaust Requirements

NOTE: The following information is very brief and general. For detailed description, refer to the “ML-175 Installation Manual” (ADC P/N 113070).

Bulkheads and partitions around the dryer should be made of noncombustible materials. Allowances should be made for the opening and closing of the control door and lint drawer. Also, allowances should be made in the rear for ease of maintenance. (Refer to appropriate Installation Manual for recommended distances and minimum allowances required.)

When the dryer is operating, it draws in room air, heats it, passes this air through the tumbler, and exhausts it out of the building. Therefore, the room air must be continually replenished from the outdoors. If the make-up air is inadequate, drying time and drying efficiency will be adversely affected. Ignition problems and sail switch “fluttering” problems on gas dryers may result, and you also could have premature motor failure from overheating. The air supply must be given careful consideration to ensure proper performance of each 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 Safety Precautions Routine MaintenanceCleaning Important InformationInstallation Requirements Description of Parts Operational Service Check ProcedureCompressed Air Requirements Electrical and Gas RequirementsReversing Relay Panel Gas Burner AssemblySteam Coil and Damper System Steam Coil pH LevelRotational Sensor Assembly Idler Shaft AssemblySpeed Reducing Shaft Drive ShaftSail Switch Gas Models Only Main Door SwitchBurner Hi-Limit Gas Models Only Tumbler Hi-LimitIntroduction Lint Drawer Switch Computer ControlsLint Drawer Ignition Controls Page To Replace Burner Hi-Limit Thermostat Gas Models Only ThermostatsTo Convert from Natural Gas to L.P. Gas Front Panel and Main Door Assemblies Sail Switch Assembly Gas Models OnlyPulleys To Install New Main Door GlassTo Replace Front Panel To Replace Drive Shaft PulleysBearings Tumbler AlignmentTo Replace Motor Pulley To Replace Drive/Idler Shaft Pillow Block BearingsTo Replace Rear Tumbler Shaft Support Wheels Rotational Sensor Switch ReplacementTo Replace Speed Reducing Shaft Bearings Motors Basket and SupportBelts Impellor Lint Drawer AssemblyTo Replace Fan Shaft and/or Fan Shaft Bearings To Replace Lint ScreenTroubleshooting Diagnostic L.E.D. Display Failure Codes Phase 6 OPL System DiagnosticsBurner hi-limit safety thermostat is tripping Overload for impellor fan motor is trippingD. Display Indicator Number D. Display IndicatorsAIR AIR JET Output L.E.D. Indicator Optional FAN Blower Output L.E.D. IndicatorHT1 Heat Output L.E.D. Indicator Fuse Main Fuse Input L.E.D. IndicatorPhase 7 OPL System Diagnostics Technical Information Input / Output Board L.E.D. IndicatorsMotor Plate High and Low Voltage ExampleHow To Use a Manometer Using a ManometerData Label Tool List450431 ADC Part No 3 06/17/08