Specifications

Section-5 Maintenance
October 17, 2013
5‐70
Copyright©2013,HarrisBroadcast
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