ADC ML-122 Service Manual

Also see for ML-122: Installation manual

Contents

ADC ML-122 Service Manual Manual pdf 5 page image

450412 - 4 www.amdry.com 5NOTE: Frequency can best be determined at eachlocation.Daily(Beginning) of each work shift.Clean lint from the drawer and screen. Inspect lint screenand replace if torn.WeeklyClean lint accumulation from lint chamber, thermostat, andmicroprocessor temperature sensor (sensor bracket) area.WARNING: To avoid the hazard of electricalshock, discontinue electrical supply to dryer.90 DaysRemove lint from tumbler, drive motors, and surroundingareas. Remove lint from gas valve burner area with adusting brush or vacuum cleaner attachment.NOTE: To prevent damage, avoid cleaning, or touchingignitor and flame-probe assembly.Remove lint accumulation from inside control box and atrear area behind control box.Every 6 MonthsInspect and remove lint accumulation in customerfurnished exhaust ductwork system and from dryer’sinternal exhaust ducting.WARNING: The accumulation of lint in theexhaust ductwork can create a potential firehazard.Do not obstruct the flow of combustion and ventilationair. Check customer furnished back draft damper inexhaust ductwork. Inspect and remove any lintaccumulation, which can cause damper to bind orstick.NOTE: A back draft damper that is sticking partiallyclosed can result in slow drying and shutdown of the heatcircuits safety switches or thermostats.When cleaning dryer cabinets, avoid using harshabrasives. A product intended for cleaning appliances isrecommended.Adjustments7 Days After Installationand Every 6 Months ThereafterInspect bolts, nuts, screws, (bearing setscrews),nonpermanent gas connections (unions, shutoff valves,orifices, and grounding connections). Motor and drive beltsshould be examined. Cracked or seriously frayed beltsshould be replaced. Tighten loose V-belts when necessary.Complete operational check of controls and valves.Complete operational check of all safety devices (doorswitch, lint drawer switch, sail switch, burner and hi-limitthermostats).!!LubricationThe drive shaft bearings and idler shaft bearings shouldbe lubricated every 3 months. Use a #3 grease orequivalent. Lubrication is necessary.The motor bearings and under normal/most conditionsthe tumbler bearing are permanently lubricated. It isphysically possible to re-lubricate the tumbler bearing ifyou choose even though this practice may not be necessary.Use Industrial Chevron ball or roller bearing SRI greaseNLGI2 or its equivalent, which has a broad operatingtemperature range of 22º F (-6º C) to 350º F (177º C).Installation Requirements ___________Installation should be performed by competent techniciansin accordance with local and state codes. In the absenceof these codes, the installation must conform to applicableAMERICAN NATIONAL STANDARDS: National Fuel GasCode ANSI.Z223.1-LATEST EDITION or National ElectricalCode ANSI/NFPA No. 70-LATEST EDITION, or in Canada,the installation must conform to applicable CanadianStandards: CAN/CGA-B149.1-M91 (Natural Gas) or CAN/CGA-B149.2-M91 (L.P. Gas) or LATEST EDITION (forGeneral Installation and Gas Plumbing) or CanadianElectrical Codes Parts 1 & 2 CSA C22.1-1990 or LATESTEDITION (for Electrical Connections).Enclosure, Air Supply,and Exhaust RequirementsNOTE: The following information is very brief andgeneral. For detailed description, refer to the installationmanual supplied with dryer.Bulkheads and partitions around the dryer should be madeof noncombustible materials. Allowances should be madefor the opening and closing of the control door and lintdoor. (Refer to appropriate installation manual forrecommended distances and minimum allowancesrequired.)When the dryer is operating, it draws in room air, heats it,passes this air through the tumbler, and exhausts it out ofthe building. Therefore, the room air must be continuallyreplenished from the outdoors. If the make-up air isinadequate, drying time and drying efficiency will beadversely affected. Ignition problems and sail switch“fluttering” problems on gas dryers may result, and youalso could have premature motor failure from overheating.The air supply must be given careful consideration to insureproper performance of each dryer.IMPORTANT: Make-up air must be provided from asource free of dry cleaning fumes. Make-up air that iscontaminated by dry cleaning fumes will result inirreparable damage to motors and other dryercomponents.Exhaust ductwork should be designed and installed by acompetent technician. Improperly sized ductwork willcreate excessive back pressure, which will result in slowdrying, increased use of energy, and shutdown of the burnerby the airflow (sail) switch, burner hi-limit or lint chamberhi-heat protector thermostat. (Refer to appropriateinstallation manual for more details.)