Udskiftning af batterier ...................................................................................................................................... 57
Rengøring af MVN ........................................................................................................................................ 58
Reparation, vedligeholdelse og kalibrering ............................................................................................... 58
Reparation af MVN ........................................................................................................................................... 58
Henvisninger til kalibreringen ........................................................................................................................... 58
Indsatser med firkantdrev ................................................................................................................................. 59
Til kalibrering og justering ................................................................................................................................. 59