The draught in the free board is controlled at approximately -50 Pa by adjusting the induced draught fan damper located after the multi-cyclone dust collector.
Ang pagtutuyo sa “free board” ay kinokontrol sa tinatayang sukat na -50 Pa sa pag ayos ng “induced draught fan damper” na makikitang kasunod ng taga-kolekta ng abo na “multi-cyclone.”