Performing maintenance
CTU 2xxx series
en-US
Page 81 / 108
BeWa CTU2000 3160738h en-us 2018-11-15.docx
2018-11-15
Emptying the intermediate pan
When suctioning the air out of the analysis chamber, rinsing fluid may get
suctioned along with this during a contamination test. This is collected in an
intermediate pan under the analysis chamber.
Empty this intermediate pan depending on the application conditions,
however at least once a week. To do this, open the draining valve (Y)
underneath.
Changing the test fluid
Each use of the CTU differs from any other. This means that it is difficult to
define fixed replacement intervals for the test fluid. Determine the
replacement intervals for each application on an individual basis.
Always observe the test fluid with regard to the following characteristics:
•
Odor
•
Appearance
(greases, oils, preservatives, water have the effect of clouding the test
fluid or giving it a yellow tint)
•
Negative control values not achieved