Sphensor
–
User manual
LSI LASTEM SRL
INSTUM_04291
Pag. 28 / 32
8
Maintenance
8.1
Battery replacement
PRMPA0401. PRMPA0402, PRMPA0403, PRMPA0404 and PRMPA0405 s are sensors powered by a non-re-
chargeable battery, therefore it will have to be replaced once reached the end of life.
The battery is placed on the bottom of the card inside the sensor. To replace proceed as follows:
1.
With one hand, hold the upper half-sphere and the diffuser ring
steady and with the other hand unscrew the lower half-sphere
by turning it counter-clockwise.
2.
Remove the lower half-sphere.
3.
With a finger of the hand holding the half-sphere hold the bat-
tery holder and with the other hand pull out the battery di-
scharge taking it to the sides in the central position; during the
operation, avoid touching the electronic components welded on
the board.
4.
Insert the new battery in the battery port respecting the polarity
indicated in the internal part of the battery port.
5.
Screw the lower half-sphere to the ring by turning it clockwise
until the lower half-sphere is aligned with the upper half-sphere.
Attention!
The sensors have precision electronic components, very deli-
cate, placed in the upper hemisphere and, in certain models, connected
to the main board by electric cables. If the upper half-sphere is
unscrewed during the operation, do not separate it from the diffuser ring
to avoid damage, but try to screw it back in the original position as indi-
cated by the instructions above.
