30
6.6
Confirm ing correct sensor- pat ch
assem bly
The red colored assem bly indicat or ring on
t he sensor head m ust now be hidden in t he
coupling ring, when looked from t he side.
Visually confirm t he disappearance of t he
red colored indicat or ring all around t he
sensor head ( see figure at right ) .
From t he pat ch underside a slight
prot rusion of t he sensor head t hrough t he
pat ch can be observed.
