9.2.1
Voorzorgen ............................................................................................................................ 22
9.2.2
9.2.3
9.2.4
Zekeringen: vervanging ....................................................................................................... 23
9.2.5
Dagelijkse werkzaamheden................................................................................................. 24
9.2.6
Wekelijkse werkzaamheden................................................................................................ 24
9.3.3
Korffilter: reiniging ................................................................................................................. 24
9.3.4
10.
11.
11.1
V
..................................................................................... 26