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User GuideLSPHD Linescanner Head
8 Maintenance
The LSPHDLinescanningThermometerisspecicallydesignedtominimisetheneedfor
regular maintenance.
The recommended maintenance routine involves periodic checks on unit services and
ensuringthatthescannerviewingwindowiskeptcleanandfreefromcontamination.
8.1 Air Purge Services
Theairpurgesystemreducestheamountofdustordirtreachingtheviewingwindow
ofthescanner.Theeffectivenessofthepurgeisdependentupontheairowrateand
thenatureofanyairbornedirt.
Checkthecleanlinessofthewindowonaregularbasisaspartofyourlocal
maintenanceschedule.Ifthecontaminationrateistoohigh,thenitmaybenecessary
toincreasethepurgeowrate.
Itisoftheutmostimportancethattheairsupplytothepurgesystemisofhighquality
andissuppliedcleananddry,otherwisewindowcontaminationmayresult,andthe
diffuserwithinthepurgeunitmaybecomeblocked.
Iftheviewingwindowbecomesdirty,cleanitwithasoftcleancloth.Ifstubborn
depositsarefound,moistenthecleaningclothwithamilddetergent.
Ifthescannerviewingwindowgetsdamaged,theunitmustbereturnedtoAMETEK
Landforawindowreplacement.
8.2 Water And Air Cooling Services
Themainproblemsassociatedwiththewaterandaircoolingsystemsareinadvertent
supplyshut-offandover-cooling.Checktheowrateonaregularbasisaspartofyour
localmaintenanceschedule.Useaowratemonitorandalarmsystem.
Over-coolingcausescondensationtoformontheunit.Topreventthishappening,
makesurethatthewaterorairsupplytemperatureisabovethelocaldew-point
temperature.
8.3 PlateMountedBlowerUnit
RefertothePlateMountedBlowerUnitUserGuide(198.252)fordetailsofmaintenance
for this unit.