CCEI
Limpido Z2
v1.0
Page 12
M
AINTENANCE
OVER
WINTER
In winter, weather permitting, the treatment can be maintained by considerably reducing frequency. An 8-hour
filtration cycle every fortnight is sufficient in most cases.
However, it is vital to continue to monitor the salt rate to preserve the cell operating in water which is under-
salted to an excessive degree (<2g/l).
If tarpaulin or a cover is used, the chlorine is protected from UV rays and the need for chlorine is reduced. In
Automatic mode and when the pool cover is connected,
Limpido Z2
®
automatically reduces production.
To enable
Limpido Z2
®
to operate with cold water (less than 18°C), the salt rate must be increased to 5g/l.
ADDITION
OF
SALT
When the salt level goes below 2.5 g/l, salt must be added to the tank.
You are advised to use specially treated salt for the pool which contains stabilising agents. The efficiency of the
electrolyser will be significantly improved as a result.
At the start of a season, we recommend that you check the salt rate and adjust it to 4g/l. According to the salt
rate recorded, the amounts of salt to be added are as follows:
Volume of the pool in m3
Measured rate
40
50
60
70
80
90
2,5g/l
60
75
90
105
120
135
3g/l
40
50
60
70
80
90
3,5g/l
20
25
30
35
40
45
Salt w
eight in kg to be added to reach 4g / l
CLEANING
THE
CELL
When the indicated production remains low despite the salt rate being correct, you should check the condition
of the cell and clean it if scale is visible on the plates.
To clean it, you should block one end and pour in diluted acid (HCl at 10% is recommended). Allow it to act for
a few hours.
This operation must be carried out with due care and attention and you must conform to the instructions for
use relating to the acid that you use.
PROBE
MAINTENANCE
When a pH probe is immersed in water, a film forms around the glass bulb at its tip, the thickness increases
with time.
This invisible film induces always almost longer response time, a degradation of the slope and a drift of the
point 0. The drift of the point 0 can be easily compensated by a regular calibration. Increasing temperature is
also an important factor of aging.
Sensor protection
Never store the sensors in distilled water. Sensors that have been stored wet can be reused immediately.
Sensors stored "dry" require several hours of rehydrating but "age" less.
As a result we recommend:
• long-term dry storage
• short-term storage in a KCl 3M solution or, failing this, in tap water.
Probe regeneration
Sensor service life can be extended by regular regeneration. To regenerate a sensor, leave it to soak in a
solution of diluted hydrochloric acid (HCl 0,1M). To obtain this type of solution, add a few (8 to 10) drops of
hydrochloric acid (HCl at 37%) to half a glass (5cl) of tap water.
When is regeneration possible?
- When the slope is too weak (often due to a polluted or clogged junction)
- When the response time is too long
- When point 0 has shifted.
