Operating instructions

Return air filter
Loosen the securing nut on the return air
filter housing and remove the housing lid.
Remove the return air filter.
Clean the return air filter with compressed air
from inside to out or renew the filter. Never
knock the return air filter on the floor.
Clean the return air filter housing. Use
lint-free cleaning rags.
Re-install the cleaned/new return air filter.
Mount the lid and fasten the securing nut.
Close the panel.
F
Never operate the dryer without return air filter.
The dryer can’t be put into operation if the panel is not
replaced.
&
Order number return air filter if operated
with return air cooler: ID 88226
without return air cooler: ID 86389
CTT 300
Maintenance 5-5
CTT 300
Return air filter Regeneration air filter
Filter of the electrical cabinet