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1、6.0MAINTENANCE&TROUBLSHOOTING6.1MAINTENANCEChilledwatersystemsrequirebasicminimalmaintenancetoinsureproperoperationandlongtermreliability.Routinemaintenanceshouldbeperformedatfrequentintervals.Theseintervals-daily,weekly,monthly-willvaryfromvesseltovesselduetoitslocationandusage.Ex
2、tendedmaintenanceshouldbeperformedatsemi-annualorannualintervals.Again,thiswillvary.Winterizationofasystemmayberequiredforvesselsstoredoroperatinginextremelycoldclimates.Astheseitemsareperformedovertime,eachvesselwilldevelopitsown"MaintenanceSchedule"6.1.1RoutineMaintenanceThewater
3、strainersandthru-hullfittingsmustbeinspectedandcleanedregularlytoprovidesufficientwaterflowthroughthechiller'scondensercoil.Obstructedwaterflowwillcausecompressorstooperateathigherpressures,temperaturesandamperagescausingexcessivewearoninternalcompressorcomponentsandpossiblenuisanc
4、etrippingonthepressureswitches.·Strainerbasketsshouldbeemptiedandinspectedformarinegrowthonthebasketwall.Thisshouldberemovedpriortoreinstallation.·Anysilt,sandormarinedebrisshouldberemovedfromthestrainerhousing.Thechilledwatercirculationcircuitmustbefilledcompletelywithwater.Airint
5、hecircuitwillinhibitperformanceandcausepossiblenuisancetrippingoftheflowswitches.Returnwaterpressureshouldbeapproximately12psigwhileincoolmodeandwhenthesystemisoff.Returnwaterpressuremaygetashighas20psiginheatmodeduetowaterexpansion.Dischargewaterpressureshouldbe25-30psigwhilethesy
6、stemisrunning.Systemswithoutgaugesmustrelyonlackofcoolingorheatingfromtheairhandlers,oraudiblenoiseinthepipestodeterminethatairexistsinthecircuit.Returnairfiltersforeachairhandlermustbeinspectedandcleanedregularlytoprovidesufficientairflowthrougheachunit.Obstructedairflowwillcausep
7、oorperformanceofanairhandler,resultinginreducedcoolingorheatingcapacity.37·Manyfiltersarelocatedonthebackofthereturnairgrille(s)oropenings(s).Accessthefilterthroughtheexistingcabinetryorbyremovingpart,orall,ofthegrille.Removethefilterandvacuumorwashittoremoveparticles,lint,etc.Dono
8、tusesoapsorsolventswhenwas
