Zodiac NOOSA REEF Manuel d'instructions télécharger pdf (Page 58)

POOLCARE QUESTIONS AND ANSWERS

POOL CARE

1. CONTROL OF “pH”

The pH is the measure of acidity or alkalinity of the pool water. If the pH is incorrect, anti-bacterial treatment will not be

completely effective.The ideal pH for swimming pools is between 7.4 and 7.6.These should be checked daily with the Pool Water

Test Kit.

The following table describes how to control the pH.

Circulate the water for three hours and test the pH again, and if necessary, add further chemicals.

2.ANTI-BACTERIAL TREATMENT

One method of keeping the swimming pool free of harmful bacteria is by adding Chlorine to the water using Daily Dose Chlorine

(Calcium Hypochlorite) in powder or tablet form. However, Ultra Violet light from the sun quickly reduces the Chlorine Residual -

the amount of Chlorine available to fight bacteria. By adding Stabiliser (Cyanuric Acid) the Chlorine loss can be reduced.The

Cyanuric Acid level should be maintained at 50 parts per million. Cyanuric Acid Test Kits are available from your Dealer.The ideal

Chlorine Residual is between 1.0 and 1.5 parts per million (p.p.m.) for unstabilised pools and 0.6 to 1.0 p.p.m. for stabilised pools.

This should be checked daily with the Test Kit.

If using Nature

chlorine usage should be reduced by 70%.

3. STEP-BY-STEP TREATMENT

Initial or New Season Treatment

1. Adjust pH to between 7.4 and 7.6.

2. In the evening, add Chlorine at a rate of 10 grams per 1000 litres.

If the pool is to be stabilised: approximately 12 hours after adding Chlorine, add Stabiliser (Cyanuric Acid).

3. Run filter all night.

4. Chlorine Level: For healthy sparkling water the chlorine level should be between 0.6 and 1.0 p.p.m. in “stabilised” pools and

between 1.0 and 1.5 p.p.m. for “unstabilised” pools.The use of Stabiliser will maintain the chlorine level for a longer time as it

acts as a sunlight screening agent and thus minimises the loss of Chlorine caused by sunlight.

Remember the usage rates vary according to climatic conditions and the number of people using the pool.

5. Testing:Testing of pool water should be carried out in the morning and additions of Chlorine made in the early evening. pH

RAISE and pH Reducer can be added when required but always be certain to spread the chemicals over the whole pool.

Daily Treatment - Unstabilised Pools

As a guide, 10 grams per 1000 litres should be sufficient to maintain a chlorine residual of 0.6 to 1.0 p.p.m. in the pool water, but

naturally the dose will vary according to climatic conditions and how much the pool is used. Note: Do not place liquid chlorine

manually. Refer to Important Information on page 1.

Daily Treatment - Stabilised Pools

When the pool water has been stabilised, the use of 2.5 grams per 1000 litres of Chlorine should be sufficient to maintain a

chlorine residual of 1.0 to 1.5 p.p.m. Check the level with your Test Kit and vary the dose if necessary. Stabilised pools have to be

super-chlorinated once every two weeks and this is done by adding Chlorine at the rate of 5 grams per 1000 litres of water. Note:

Do not use liquid chlorine.

pH EXPLANATION TREATMENT

0 to 7.2 Pool water is too acidic. Add pH RAISE (Sodium Bi-Carbonate).

Eyes and skin may be IRRITATED. Add no more than 25 grams per 4540 L

Metal and plastic parts may be damaged. (25 grams = 2 level tablespoons approx.)

7.4 to 7.6 IDEAL

7.8 to 14 Pool water is too alkaline. Add pH REDUCER (Sodium Bi-Sulphate).

Water may become cloudy. Add no more than 25 grams per 4540 L

Liner may be damaged. (25 grams = 2 level tablespoons approx.)

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Zodiac NOOSA REEF Manuel d'instructions Page 58

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