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Section-5 Maintenance

October 17, 2013

5‐70

WARNING:Disconnectprimarypower priortoservicing. 888‐2693‐004

5.10.10 ChangingaPABAirFilter

ThePABairfiltersshouldbeinspectedperiodicallyandcleaned/changedasneededtoensuremaximumcooling

efficiency.Clean/replacefiltersmoreoftenindustyenvironments.

Thefi

lter(9435602691)canberemovedfirstlooseningthefourthumbscrewsonthefrontdoorassemblyandthen

loweringthedoor.Oncethedoorisopenthefilterretainerassemblycanberemoved.Theretainerisremoved,ina

hingedfrontdoormodel,witha#1Phillipsscrewdriver.Thenon‐hi

ngedversionfeaturesafilterretainerthatcanbe

removedwithouthardwareremoval.Thefoamfiltermaterialis1/2"thick,20ppi.

Figure 5-53 Filter in Hinged PAB Front Door

STEP 1

Loosenthefrontpanelthumbscrewsandopenthefrontpanel.Thehinged

frontpanelswingsdownwardtoexposethefilterretainerscreenandfilter

material.Thefrontpanelisremovableonthenon‐hingedmodels.

STEP 2 Hingedfrontpanelsrequireremovalthefournutsandstarwashersthathold

thefilterretainerscreenandfiltermaterialinplace.Besuretokeepthenuts

andwashersforre‐use.Non‐hingedmodelshavefilterretainersthatare

heldinplacebyfriction.

STEP 3 Removethefi lterretainer.Thefilterretainerwillbereused.Notethe

orientationsoitcanbereinstalledusingthesameorientation.

STEP 4 Graspfilterandcarefullyliftupwarduntilfilterseparatesfromthefront

panel.

STEP 5 Cleanwithcompressedair,washwithdetergent/water,orreplaceas

necessary.

Caution

DRY THE FILTER MATERIAL THOROUGHLY BEFORE REINSTALLATION.

Filter

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