Operation&MaintenanceManualNOISEEMISSION
MaintenanceSchedule
PERIODDESCRIPTION
AsDetected
COMPRESSEDAIRLEAKS
Correctallcompressedairleaksduringtherstshutdownperiod
afterdiscovery.Ifsevereenoughtocauseseriousnoiseproblems
andefciencyloss,shutdownimmediatelyandcorrecttheleak(s).
AsDetected
SAFETYANDCONTROLSYSTEMS
Repairorreplaceallsafetyandcontrolsystemsorcircuitsas
malfunctionoccurs.Nocompressorshouldbeoperatedwitheither
systembypassed,disabled,ornonfunctional.
Daily
ACOUSTICMATERIALS
Indailyinspections,observethesematerials.Maintainallacoustic
materialasnearlyaspossibleinitsoriginalcondition.Repairor
replaceallsectionsthathave:1)sustaineddamage,2)have
partiallyseparatedfrompanelstowhichtheywereattached,3)are
missing,orhaveotherwisedeterioratedduetosevereoperatingor
storageconditions.
100HOURSFASTENERS
Allfastenerssuchashinges,nuts,bolts,clamps,screws,rivets,
andlatchesshouldbeinspectedforloosenessaftereach100
hoursofoperation.Theyshouldberetightened,repaired,orif
missing,replacedimmediatelytopreventsubsequentdamageand
noiseemissionincrease.
100HOURSENCLOSUREPANELS
Enclosurepanelsshouldbeinspectedat100houroperational
intervals.Allpanelsthatarewarped,punctured,torn,orotherwise
deformed,suchthattheirnoisecontainmentfunctionisreduced,
shouldberepairedorreplacedbeforethenextoperationinterval.
Doors,accesspanels,andhatchclosuresespecially,shouldbe
checkedandadjustedatthistimetoensurecontinuousseating
betweengasketoracousticmaterialandthematingframe.
100HOURSAIRINTAKEANDENGINEEXHAUST
Engineandcompressorairintakeandengineexhaustsystems
shouldbeinspectedaftereach100hoursofoperationforloose,
damaged,ordeterioratedcomponents.Repairsorreplacements
shouldbemadebeforethenextperiodofuse.
250HOURSCOOLINGSYSTEMS
Allcomponentsofthecoolingsystemforenginewaterand
compressoroilshouldbeinspectedevery250hoursofuse.
Anydiscrepanciesfoundshouldbecorrectedbeforeplacingthe
compressorbackinoperation.Unrestrictedairowovertheradiator
andoilcoolermustbemaintainedatalltimesduringoperation.
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