Vmac VR70 - Safety Messages

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7
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InspectingandReplacingtheAirFilter
Properairflowintothecompressorisvitallyimportantforgoodperformance.Ifthefilterbecomes
plugged,thecompressorwillnotbeabletomeetthedemandsandwillprobablyoverheat.While
VMACrecommendsthatyoureplacethefilterevery200operatinghoursortwiceayear,youshould
replacethe
filtermorefrequentlyinsevereoperatingconditions,whereitcouldbecomecontaminated
morequickly.
Tocheckthefilter,followthisprocedure:
1.Makesurethatallairpressurehasbeenventedfromthesystem.
2.Cleantheareaaroundthecompressorandfiltercover.
3.Removethefiltercoverretaining
nut,thecoverandthefilterelement.
4.Immediatelycovertheopeningofthecompressorwithaclean,dryclothorwithmaskingtoprevent
contaminationfromenteringthecompressor.Donotoperatethetruckorthecompressoruntilthefilter
andcoverhavebeeninstalled.
5.Cleantheinsideof
thefiltercoverwithaclean,drycloth.Ifnecessary,youcanusesolventtoclean
theinsideofthecover.Ifyouusesolvent,makesurethatyourinsethecoverwithwateranddryit
thoroughlybeforeinstallingitonthecompressor.Solventfumesenteringthecompressorcould
ignite
duringthecompressionprocess,causinganexplosion.
6.Examinethefiltercarefullyforcontamination.Placeatrouble‐lightontheinsideofthefilterand
rotateitoverthelightwhileexaminingtheelement.Theamountoflightthatshinesthroughthe
elementisagoodindicatorofhowmuch
aircanpassthroughtheelement.Ifthelightisdimorblocked,
airwillnotbeabletogetthrough.
7.Ifthefilterisdirty,removetheclothormaskingandinstallanewfilter.Donotattempttowashor
blowthefilterelementclean.Theseare
notserviceablefilters,theymustbereplaced.Using
compressedairtocleanafilterelementwilldamagethematerialandallowcontaminationtoenterthe
system.
8.Replacethecoverandthecovernut.Becarefulnottoovertightenthenut.
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