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Maintaining the ideal chlorine value:
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Remove the solar cover from the pool before chlorination and shock disinfection to prevent
chemical damage. Take care of balance in the water.
The pH value (potential of hydrogen) is ideal at a value of 7.4 (tolerance range: 7.2 to 7.8).
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If the pH is too low, the water becomes very corrosive. If the pH is too high, the water be-
comes alkaline.
The lime hardness (CH) is ideal at a value of 275 ppm (tolerance range: 150–400 ppm). If
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the CH value is too low, the water becomes corrosive. If the CH value is too high, the water
becomes alkaline.
The total alkalinity (TA) is ideal at a value of 100 ppm (tolerance range: 80–120 ppm). If
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the TA value is too low, the water becomes corrosive. If the TA value is too high, the water be -
comes alkaline.
The proportion of FC (free chlorine) must not be higher than 4.0 ppm (4 parts of chlorine to
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1 million parts of water, corresponds to 4 mℓ per litre). The ideal value is 2.0 ppm, tolerance
range between 1.0–3.0 ppm. The ideal value for CC (combined chlorine) is 0 ppm and should
not be more than 0.2 ppm.
If "shock chlorination" is carried out in the swimming pool, make sure that the cover is com -
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pletely removed from the surface of the water and only put back on when the chlorine value
has returned to normal.
Too high a chlorine value and unbalanced water increase the corrosive effect on the pool
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cover and lead to premature ageing, bleaching, discolouration, and crystallization of the chem-
ical residues on the surface of the bubble cover.
In its natural state, chlorine is gaseous, when it is added to the water as an additive (solid, li -
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quid, or gaseous), it automatically transforms back into its natural state (gaseous), rises in the
water and is then released into the atmosphere through evaporation. When using a bubble
cover, there is no evaporation, and the chlorine circulates in the water, caused by the filter
system and pool pump. This is how the water is disinfected. When the cover is on, the chlorine
content in the water increases. In order to avoid an increased chlorine concentration, both the
content and the addition must be reduced by 30–60 %. If you use automatic chlorine dis-
pensers, salt water chlorination systems or add chlorine manually, its amount should be re-
duced to the appropriate value in order to obtain the correct chlorine content and water bal-
ance.
The pump and filter should be used during the hottest part of the day between 10 a.m. and
•
4 p.m. with a solar or energy absorbing covering placed over the pool. The sun heats the wa -
ter through the solar cover, at the same time the cover absorbs heat and transfers it to the wa -
ter. The warmer water rises with the chlorine gas, while the water below remains cool. The
heat is released and the chlorine has to move again in the water. The concentrated chlorine
mixes in the warm and cold water and cannot attack the cover in this way. Thus, you will en-
sure optimal use of the solar bubble cover and its longer service life.
When the cover is on the pool surface in the sun, the temperature should not exceed 40
•
as this can reduce the life of the material. Do not expose the cover to direct sunlight when it is
not in use. Overheating can damage the air bubbles.
Protection
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Cover the pool blanket with a white cloth when not in use to prevent its exposure to direct sun -
light.
All covers must be stored in the shade out of direct sunlight. Never leave it folded or rolled up
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in direct sunlight. The sun heat effect gets multiplied and leads to weathering of the material.
The consequences are not necessarily noticeable at once, but they might be very serious.
For example, a greater heat concentration in the material causes the air in the bubbles to ex-
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pand and tear the coated area apart, resulting in melting of the bubbles with bigger air
bubbles. This process on its own is not bad unless it occurs repeatedly. Furthermore, the
cover can heat up to such an extent that it becomes soft and some areas just weld together.
The cover will begin to deteriorate or rows of melted bubbles will appear all over the entire
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cover, which will also cause the air bubbles to shrink.
© by WilTec Wildanger Technik GmbH
http://www.WilTec.de
http://www.aoyue.eu
http://www.teichtip.de
Item 60247–60251
℃
,
Page 5
05
2021-1
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