Replacing Sensor Unit - ProMinent DULCOTEST DO 1-mA-20 ppm Mode D'emploi

Maintenance
44
Fig. 16: Cleaning the sensor membrane (in this case the DO 2 sensor)
10.2 Replacing sensor insert
IMPORTANT
• If the sensor is in use, it is essential to avoid water from
reaching the contacts when replacing the sensor insert. If this
cannot be avoided, dry the water off carefully using a hair-
dryer.
• Do not remove the silicon paste on the back of the sensor
insert.
• It protects the contacts from short circuit even if some water
has penetrated.
• The bracket of the sensor insert must be tightened and slack-
ened only by hand (the bracket of the sensor holder has a
bayonet fitting).
Switch off the power.
Remove the sensor from the pool and lay on a firm surface with
the membrane underneath.
Rinse the sensor with clean water
Dry the sensor with a soft cloth until every drop has been removed.
Remove the old sensor insert (see Fig. 5 or Fig. 8)
Place a new sensor insert (see Fig. 5 or Fig. 8) (insert the two lugs
on the bottom of the sensor into the corresponding holes on the
transmitter).
Switch on the power once more then run in and calibrate the
sensor (see chap. 8.2 and 8.3).
ProMinent ®