Nidec LSA 49.1 Installation And Maintenance Manual

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Nidec LSA 49.1 Installation And Maintenance Manual Manual pdf 11 page image

2017.12 / p11Electric Power GenerationInstallation and maintenanceLSA 49.1Low Voltage Alternators - 4 pole3007 en -4 - SERVICING - MAINTENANCE4.1 - Safety measuresServicing or troubleshooting must becarried out strictly in accordance withinstructions so as to avoid the risk ofaccidents and to maintain the machine inits original state.All such operations performed on thealternator should be undertaken bypersonnel trained in the commissioning,servicing and maintenance of electricaland mechanical components, who mustwear personal protective equipmentappropriate for mechanical and electricalhazards.Before any intervention on the machine,ensure that it cannot be started by a manualor automatic system and that you haveunderstood the operating principles of thesystem.Warning : During and after running, thealternator will reach temperatures hotenough to cause injury, such as burns.4.2 - Routine maintenance• Checks after start-upAfter approximately 20 hours of operation,check that all fixing bolts on the machine arestill tight, plus the general state of themachine and the various electricalconnections in the installation.• Electrical servicingCommercially-available volatile degreasingagents can be used.Do not use: trichlorethylene, perchlo-rethylene, trichloroethane or any alkalineproducts.These operations must be performed ata cleaning station, equipped with avacuum system that collects and flushesout the products used.The insulating components and theimpregnation system are not at risk ofdamage from solvents. Avoid letting thecleaning product run into the slots.Apply the product with a brush, spongingfrequently to avoid accumulation in thehousing. Dry the winding with a dry cloth. Letany traces evaporate before reassemblingthe machine.• Mechanical servicingCleaning the machine using water or ahighpressure washer is strictly prohi-bited. Any problems arising from suchtreatment are not covered by ourwarranty.Degreasing: Use a brush and detergent(suitable for paintwork).Dusting: Use an air gun.If the machine is fitted with air inlet and outletfilters, the maintenance personnel shouldclean them routinely at regular intervals. Inthe case of dry dust, the filter can be cleanedusing compressed air and/or replaced if it isclogged.After cleaning the alternator, it is essential tocheck the winding insulation (see sections3.2 and 4.5).WARNINGWARNING