Operating instructions

5.2.1. Cleaning or Replacing the Return Air Filter
CTT 40 / CTT 70
Detach the screw on the housing of the re
-
turn air filter and remove the housing co
-
ver.
Remove the nut of the filter cartridge.
Remove the filter cartridge.
Clean the inside of the return air filter hou
-
sing. Use non-fibrous cleaning cloths or an
industrial type vacuum cleaner.
Blow compressed air from the inside out
through the clogged filter cartridge or re
-
place the filter cartridge.
Re-install the cleaned/new filter cartridge.
Mount the nut.
Install the lid of the return air filter
housing.
Fix the screw.
F
Never operate the dryer without return air filter.
&
Purchase order numbers return air filter CTT 40/70
when operating without return air cooler: ID 83957
when operating with return air cooler: ID 83956
64.10-0214GB11 07/03
CTT 40 / CTT 70
Maintenance 5-5
CTT 40 / CTT 70
Return Air Filter