Desjoyaux Pools : Maintenance

Pool maintenance

How can I keep the water in the pool attractive?

The right way to maintain your pool on a day-to-day basis is explained under this heading. You can look too at our maintenance video and also ask your authorised agent to analyse your water. He will advise you of suitable products available and explain the dosage to be used.
You will find the answers to all your questions on the technical, mechanical and chemical aspects of water care and an explanation of the mechanics and correct use of the filtration unit.

Explanation of the mechanics and correct use of the filtration unit

The Desjoyaux filtration system.

No matter which filtration system is installed in your pool,
the same elements are always included.
On the front of the unit is the underwater lighting and the return water suction device or skimmer, which can be adjusted vertically and horizontally. Inside the skimmer, a pre-filter basket collects any large debris floating on the water surface before it reaches the filtering membrane.
membrane.
These are placed in the filtration system unit suction bowl.

On the back of the unit is the pump itself, which requires no involvement on your
part except to arrange regular servicing every two or three years through
your authorised agent. If you decide to completely empty the pool for the winter, make sure that when starting it up again it is filled to the overflow level.

The pump connection box and the lighting transformer are connected in the electrical control box.

The electrical control box

Located at least 3.5 metres from the water, the electrical control box contains several fuses and a timer
The filtration system stop / start switch
The lighting stop / start switch
Please note that the lighting must never be turned on unless the lamp is fully under water. It may be irreparably damaged unless it is fully submerged: never turn it on in an empty pool.
The differential switch must be regularly checked by pressing the test button – but don't forget to reset it again afterwards.

Correct filtration system operation

The water level is at the correct level when it covers ¾ of the skimmer. The front return inlets must be adjusted so that the water surface is being skimmed. Regularly empty the skimmer basket and clean the filter membrane with a water jet at least once a week, placing it on the filter holder.

Setting the filtration system timer

The primary rule to bear in mind is that the more the pool water is filtered, the lower the maintenance cost. All the water must go through the filter at least once a day. The golden rule is to filter2/3 during the day and 1/3 at night. An easy way to calculate the ideal filtering time is to divide the water temperature (in centigrade) by two, or if the temperature is less than 25°C, to set the filtration time in relation to the length of the pool.

Chemical matters, or the basis of sound care.

Checking the pH

Establishing the pH or hydrogen potential of the water is essential in order to stabilise pool clarity. The pH must always be between 7 and 7.6 on the analysis kit colour scale. The higher the pH, the less effective the disinfecting capacity of the chlorine. Measure the pH once a week and adjust the pH content with pH + or pH – as necessary. Remember to adjust the pH gradually, in several phases. Never put a massive dose of pH+ or pH – into the pool. Take a further reading two hours after making an adjustment and then add another dose if necessary.

The ideal chlorine level

The ideal chlorine level for comfort and safe disinfecting action is between 1gram and 1.5 grams per cubic meter. Check the level on the analysis kit colour scale. By using one 200-gram slow release chlorine tablet per week for every 40 cu meters of water, the chlorine level should remain stable. However, if necessary, use a shock chlorine treatment of 10 grams per cubic meter. Always put the tablets in the skimmer basket – never put them directly into the pool.

The non chlorine treatment

While we think that chlorine is actually the best disinfectant for a pool, we do have a range of non-chlorine kits. You may also wish to have your authorised agent install a salt electrolysis treatment system.

The right reactions

Using the analysis kit, check the level of pH and chlorine in the pool once a week taking care to take the sample from the opposite side from the filtration system unit and at about 40 cm below the surface of the water. After a storm, a heat wave or when a lot of people have been using the pool, it is worth checking the chlorine level and giving a preventive shock treatment. Remember, never carry out a shock chlorine treatment with the pool covered.

Water that turns

Green water
With the bottom of the pool visible.

This is mainly due to algae, which may be caused by an incorrect pH level, insufficient filtering time, lack of treatment products, left too long in winter, a badly cleaned filter.
What you need to do: adjust the pH to a higher acid level. (7)
Brush the sides and bottom of the pool so that the algae are in suspension. Carry out a shock chlorine treatment of 10 grams per cubic meter of water and then run the filtration system continuously, cleaning the filter once or twice a day as necessary.

Very green water
The bottom of the pool is no longer visible.

The causes are basically the same but the pool has probably not been treated for a longer period.
What you need to do:
Adjust the pH to a high acid level.
Brush the sides and bottom of the pool so that the algae are in suspension.
At the same time carry out a shock chlorine treatment of 10 grams per cubic meter of water or use JD Flash at 1 litre per 10 cubic meters of water.
Set the filter to operate continuously.
Clean the filter once or twice a day. In order to reduce the time before being able to reuse the pool, we would advise the use of the Desjoyaux mega bag and also putting a small flocculating tablet in the skimmer.

The mega bag is available from your Desjoyaux authorised agent.

White water

Algae killed by the chorine may cause this effect. The dead algae remain in suspension in the water giving it a cloudy or milky appearance.
Only by running the filtration system continuously and setting up the Desjoyaux mega bag will allow the pool to return to normal.

General pool maintenance

Once a week activate the vacuum cleaner and systematically clean the whole pool, or connect the Desjoyaux cleaner and admire it working away from your deck chair … At the beginning of the season and on preparing for winter, clean the water circuit and the outside of the filtration unit. Once a year replace at least 1/3 of the water in the pool to avoid it becoming saturated by stabiliser and to encourage the activity of the water care products. Once a year brush and wash the surrounds and coping, which may otherwise lead to pool water pollution.