Case 621G - Page 279

7-MAINTENANCE
4.Extractthemainlterelement(1)fromthelterhousing
(2).
NOTE:ifthemainlterelementlooksverydirtyandno
longertforpurpose,proceeddirectlywiththereplacement
(referto7-101).
LEIL15WHL0567AB4
5.Cleanthemainlterelementwithcompressedair
(maximum5bar(72.5psi))carefully,applyingthe
compressedairfromthecleanside(sealside)untilno
moredustisblownout.Thetipofthecompressedair
gunmustnottouchthelter.
NOTICE:neverwashoutorbeatthemainlterelement.
NOTICE:whenblowingclean,ensurenodustgetsintothe
insideofthemainlterelement.
LEIL17WHL1650AA5
6.Checkthecleanedmainlterelementthoroughlyfor
signsofdamagetothelterpaperandseals.
7.Reinstallthemainlterelementintothelterhousing.
8.Securetheltergridassemblytothelterhousing.
9.Closetheright-handdoor.
7-71