Performing maintenance
CTU 2xxx series
en-US
Page 78 / 108
BeWa CTU2000 3160738h en-us 2018-11-15.docx
2018-11-15
Changing the clean-room filters
When the CTU is switched on, there is overpressure in the clean room. This
overpressure is generated by a fan module above the clean room. This fan
module contains a prefilter mat and a main filter to ensure clean supply air.
Replace the prefilter and main filter regularly.
Replacing the prefilter mat
We recommend changing the prefilter mat [2] every six months. Perform the
following steps to change the prefilter / main filter.
Remove the fastening screws of the filter hood cover [1].
Take the filter hood cover [1] off. The prefilter mat is now freely accessible for
you to remove it.
Put the new prefilter mat [2] in place.
Lay the filter hood cover [1] on top and secure it using the fastening screws.