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5.2.1. Cleaning or Re placing the Re turn Air Fil ter
STT 110 / STT 160
De tach the nut on the hous ing of the re turn
air fil ter and re move the hous ing cover.
Re move the nut of the fil ter car tridge.
Re move the fil ter car tridge.
Clean the in side of the re turn air fil ter hous -
ing. Use non-fi brous clean ing cloths or an
in dus trial type vac uum cleaner.
Blow com pressed air from the in side out
through the clogged fil ter car tridge or re -
place the fil ter car tridge.
Re-in stall the cleaned/new fil ter car tridge.
Mount the nut.
In stall the lid of the re turn air fil ter
hous ing.
Fix the nut.
F
Never op er ate the dryer with out re turn air fil ter.
&
Pur chase or der num bers re turn air fil ter
when op er at ing with out re turn air cooler: ID 88366
when op er at ing with re turn air cooler: ID 88628
506-2MS
STT 110 / STT 160
Main te nance 5-5
STT 110 / STT 160
Air fil ter