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8. WINTERISATION
As soon as the temperature of the pool water
falls below 15 °C, stop STERILOR Duo.
Effectively, at these temperatures, Chlorine
production becomes practically zero, and the
titanium electrodes wear out much more.
They may remain on the installation or be
dismantled and replaced by the winterisation
cap (in this case, the cell must be kept in a
"healthy" environment without corrosive
vapour or significant temperature variations).
The keys to correct pH sensor winterisation
that ensure correct startup for the next
season:
-
The electrode must be stored in a dry place,
protected from frost and in vertical position,
with the cable upwards.
- The pH electrode must be placed in a
winterisation solution, ref. KAQ 0692 (do not
place the electrode in any other solution
during the winterisation period or in tap or
demineralised water).
Protecting from frost
During winter, if you stop the filtration for a
long period, add a common winterisation
product, following the manufacturer's dose
levels.
The swimming pool operates throughout the
winter
Stop STERILOR Duo below 15 °C:
•
Use a common winterisation product,
following the manufacturer's dose levels.
•
Then filter for 1 to 3 hours a day.
•
Early morning filtration limits the risks of
freezing at dawn.
•
Correct the fairly low pH, between 6.8
and 7.0 once or twice a month.
9. EARTHING SLEEVE
A large number of swimming pools are
currently constructed with electrically
insulating materials. Embedded parts, wall
crossings, pipes, valves and pump housings are
made of PVC, ABS or other plastics. The linings
are often made of polyester, PVC liner, or
painted. These types of swimming pools, of
which all of the components are made of
plastic, have the characteristic of storing static
electricity.
Also, the pump turbines create fairly
significant static currents. A filtration pump
thus creates a variable voltage of
approximately 3 to 4 Volts. The same applies
for counter-current pool motors. Therefore,
there is always a voltage of 3 to 8 volts in the
swimming pool's water.
This voltage can reach 12 volts during a
storm.
A poorly balanced pH destabilises the
mineral salts contained in the pool
water. The mineral salts in ionic form
and with a positive charge then react
with the bottom or sides of the pool, on
the parts that are statically the most
negatively charged. Bonds are then
produced between the molecules,
causing grey to black disparate stains, or
even making the whole lining turn a
greyish colour.
The installation of an earthing sleeve
prevents these phenomena by earthing
the residual electrical currents. These
stains cannot be eliminated by rubbing,
and only an acidic medium will make
them disappear.
Summary of Contents for STERILOR Duo
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