With dirt and soot particles on the probe tube the test cap
will not seal properly.
► The probe tip must be cleaned before you start this test!
► Go to the Extras menu.
► Select Leak proof test.
► Press OK.
The menu Leak proof test appears.
► Ensure that the leak test cap is plugged in.
Pressure is established.
A 10-second test is running.
A message appears whether the leak proof test was passed or not.
► Remove the proof test cap.
If of the leak proof test is not passed the probe must be checked including
the hosing as well as the condensate separator.
If no undensity is ascertained in these external parts the OPTIMA 7
Combustion Analyzer has to be checked in a service department
(worldwide service departments see www.mru.eu)