Checking And Maintenance Of The Ph Probe; Checking And Maintenance Of The Amperometric Probe (Free Chlorine) - pandapura SMARTCL15127 Manual De Instalación

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• Thoroughly clean the probe in pure, preferably disti lled water. Shake the probe to remove the
water.
Recheck the value of the probe. A probe that gives an error lower than around
30 mV can conti nue to be used provisionally while it is replaced.
Never leave the probe outside. If the probe has been dry for a ti me, it can be regenerated with the
hydrochloric acid soluti on.

5.3- Checking and maintenance of the pH probe

It is recommended to clean and check the probe at least once a year. Sti r it in a glass of water in
which a spoonful of detergent has been dissolved. Then wash it under the tap and leave it for a
few hours in a glass of water in which 1 cm3 of hydrochloric acid has been added.
Recalibrate the probe again.
If well maintained, a probe can last for two or three years.
The probe should never be left to dry. If it is kept outside the installati on, the riginal cap should
be placed, or it should be submerged in a glass of water. If a probe has been left to dry, it can
be regenerated by leaving it for 12 hours in a glass of water, preferably adding a few drops of
hydrochloric acid.
5.4- Checking and maintenance of the Amperometric probe
(free chlorine)
Maintenance of this probe is based on maintaining its electrodes free from dirt and incrustati ons.
The probe has a self-cleaning system. However, if dirt is observed, the electrodes can be
submerged in the cleaning liquid supplied with the probe. Also check that the inlet fi lter of the
probe holder is not blocked.
To locate any possible problems, you can follow the recommendati ons in the
following table:
PROBLEMS
Reading = 0, does not coincide
with the DPD- 1 measurement
CAUSE
Failure in the connecti on of the sensor with the
controller
Insuffi cient fl ow in the sensor holders or the
chlorine sensor is not in contact with the water
There are air bubbles in the measuring zone of the
sensor
The sensor has been a number of hours measuring
the water without free chlorine
SOLUTION
Check connecti ons
Adjust the fl ow reaching the sensor
holders. Clean the fi lter and the fl ow
regulator of the sensor holders
Bleed the sensor holder and ensure that
there is no air remaining in the measuring
zone.
Let water containing free chlorine
circulate through the sensor holders for
1 hour