7 | Cleaning and servicing BÜCHI Labortechnik AG
26/38 Operation Manual Inert Loop B-295 SE
u Close the condensate drain valve.
u Remove the oxygen sensor. See Chap-
ter8.2.1 "Removing the oxygen sensor",
page31
u Insert the screw plug.
u Disconnect the process gas tubes at the con-
nected spray dryer.
u Place the end of the process gas tubes in a
top position.
u Place the end of the exhaust gas tube in a top
position.
u Fill in about 2 liter cleaning liquid (e.g. ethanol)
into the process gas tube connected to the
connection marked IN until the liquid reaches
the exhaust connection.
u Wait 5 minutes.