Weka 593 Série Manuel D'installation, D'utilisation Et D'entretien page 27

For better distribution, the pH regulator (accessory) is added near the inflow or at several points around the
swimming pool (not in front of the filter).
The information on the product used must be observed.
Disinfection:
The water in your pool should be an oasis of wellbeing and health, i.e. clear and hygienically clean. Due to
environmental influences, dirt particles, germs and bacteria are always entering the water. The latter multiply
considerably in water temperatures exceeding 20°C. To prevent these influences, we suggest that you use a
so-called "oxidation agent" in various forms. Primarily, these are stabilised organic chlorine products, as these
are easy to handle and have the best degree of efficiency. Approximately three in every 100 people have an
allergic reaction to chlorine products. In this event, we recommend that the oxygen method be used as an
alternative. There are two different chlorination methods. The first is shock or intermittent chlorination (rapid
chlorination granulate or tablets), e.g. when refilling the swimming pool or in the event of abnormal measuring
results. The second is long-term or continuous chlorination, where slow-release soluble chlorine products
(long-term chlorine tablets) are used, facilitating a constant release of chlorine. The ideal chlorine value is
between 0.3 and 0.6 mg/l.
Preventing algae growth:
Algae are micro-organisms which provide nutrients for bacteria. To guarantee a perfect, hygienic water quality,
it is necessary to keep the pool and water free from algae. The use of chlorine alone cannot always guarantee
this, particularly with outdoor pools.
If you use a foam-free, liquid algae prevention agent, there will be no foam build-up in reverse current units
and fountains.
Flocculation:
Some dirt particles are so small that they are not captured by the sand filter (colloids). We recommend using
a flocculant to dispose of them. This increases the definition of the filter. Even the finest impurities are taken
up by the flocs or entrapped. The result is crystal clear water. Flocculants may be added as a precautionary
measure.
Perfect spring cleaning:
Spring cleaning is on the agenda – what's the best way to do it?
To make life easier for you, we have summarised the most important steps:
1. Remove coarse impurities with leaf skimmers and rakes to prevent the pool drain from becoming
blocked.
2. Now allow your pool to drain completely so that you can also eliminate limescale and stubborn stains.
Draining the pool is necessary to ensure that the cleaning agents are effective, thus forming the basis
of hygienically clean water maintenance. Note: This does not apply to in-ground pools. Stability must
be guaranteed.
3. To clean pool walls and floors, we recommend using the basic cleaner: This is an acidic cleaner
which fights limescale and encrustation. It does not attack plastics, but it should not come into contact
with acid-sensitive materials such as marble or the pool fittings. Apply the basic cleaner, diluted with
water by a ratio of 1:3 to 1:10 depending on the extent of contamination, and scrub the surfaces well.
After 5–10 minutes' contact time, scrub the surfaces again and rinse well. Caution: A membrane
sponge or soft membrane brush should be used. Do not allow the cleaner to dry, just to react.
4. Grime and grease which have been deposited as a water mark on the edge of the pool can be simply
removed using the pool edge cleaner. This alkaline cleaner easily removes grime, grease and
cosmetic stains. You can add the pool edge cleaner neat or diluted with water to form a foam. Wet
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