JUMO Wtrans p Betriebsanleitung Seite 62

3 Preparing the transmitter
If the lithium battery was removed or if it must be replaced, proceed as follows:
Step
1
2
3
4
20
Activity
Unscrew the case of the pressure transmitter (A) counterclockwise and remove it.
To remove the lithium battery (C), first push the battery down against the contact spring (E),
then pull it outwards above in the positive pole (B) area, and remove it.
To insert the lithium battery (C), first move the battery down against the contact spring (E)
in the area of the negative pole (D) and then connect the positive pole (B).
Retighten the case of the pressure transmitter (A) clockwise hand-tight (10 ±5 Nm) and
make sure that the seal (F) is fitted correctly.