Manual Wellis Easy 7 (page 92 of 108) (English)

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WATER TREATMENT BASICS

The chemical equilibrium of the water

The spa water will be clean and clear if its chemical compo-

nents are in equilibrium.

1. pH value:

The first important indicator is the pH value of the water.

pH is measured on a scale of 0-14 where 7 is the neutral

value. The ideal value is between 7.2 and 7.8 pH. pH values

out of this range may irritate the skin.

Under this value the water is acidic, above is basic. The

pH value of the human eye is around 7.5, below 7.2 and

above 7.8 the water will sting the eyes. Most problems are

caused by the pH value being too high. An improper value

reduces the effect of the disinfectant.

A high pH value can cause the following problems:

• The disinfectant can be ineffective.

• The solution can exude solid matter.

• The water can become turbid.

• Can cause skin irritation.

A low pH value can cause the following problems:

• The water can become turbid.

• Can cause eye irritation.

Rain or adding fresh water will change the pH value of the

water.

2. Disinfection:

Disinfectant is the chemical that eliminates or neutralises

the microorganisms (bacteria, algae, fungi, viruses) pres-

ent in the water. Microorganisms are small microscopic

organisms which cannot be detected by the naked eye

and are continuously getting into the water through rain,

wind, and the bodies of the bathers. If they are not elimi-

nated, they pass from one person to the other through the

water (and may cause sickness, infection). Organic matter

turns the spa water opaque and cloudy.

As we are dealing with warm water spas, bromine or active

oxygen is most often used.

3. Preventing growth of algae:

In addition to the disinfection of water the prevention of

growth of algae is another key issue. Algae can grow even

if proper disinfection and filtration is performed.

Antialgae treatments only work with appropriate pH

values.

4. Water hardness:

Water hardness is determined by the quantity of calcium

and magnesium salts dissolved in the water. Hard waters

contain too much of these dissolved salts and thus scale

will form if left alone. Scale can cause significant damage

to the walls of the spa, piping, filter, heating, and engi-

neering units. In Hungary water is medium hard. Water

hardness cannot be reduced by the addition of chemicals,

but formation of scale can be prevented.

5. Frothing:

Froth is the smaller-bigger agglomeration of the bubbles

and colloid contaminants found on the surface of the

water. It is mostly caused by mixing of dirt, cosmetics,

body lotions, etc. that soak out of the human skin and

the chemicals. It endangers conservation of the aesthetic

appearance and cleanliness of the water.

6. Water analysers:

There are several types of water analysers which are

mostly used to measure chemical and disinfectant effect.

Chemical (pH); Disinfectant (Br, O3)

To preserve the condition of the pool, we recommend the use

of Wellis chemicals or a product with the same active ingredi-

ent. This will not only make your pool last longer, but you can

enjoy your free time in safe, clean water that’s crystal clear.

Tester types:

Box containing tablets and graduated measuring glass.

Litmus paper indicators in a box.

Chemicals should always be loaded into the filter housing.

Then proper disinfection of the spa balance if the

chemical levels are not at least 48 hours below the speci-

fied value.

Even with the most accurate disinfection after 2-3 months the

water quality is no longer maintainable and it is necessary to

replace the entire water quantity. In this case we advise you

an extensive shock-like disinfection with algae. Dissolve a

tablespoonful of algae in the spa water and run the engines

for 15 minutes. After switching it off for 5 minutes switch it on

for another 1-2 minutes, then drain, clean, and rinse the spa.

ATTENTION!

Using alcohol- or acetate based cleaning products for cleaning

the spa is PROHIBITED!

To preserve the condition of the pool, we recommend the use

of Wellis chemicals or a product with the same active ingredi-

ent. This will not only make your pool last longer, but you can

enjoy your free time in safe, clean water that’s crystal clear.

The manufacturer is not responsible for damage resulting

from the use of such chemicals.

The chemical treatment of the water should only be done by

persons under 18 years of age under parental supervision.

Maintenance should only be performed by qualified profes-

sionals.

SPA MAINTENANCE

Do not expose the spa to sunlight! Without a thermal cover

direct exposure to sunlight can cause discoloration in the wa-

ter. Use a spa cover when you are not using the spa, whether

it is filled with water or not. Do not expose the spa to rain or

snow. If possible, build a covering shelter for the spa.

The side coating of the spa should be protected from high

UV exposure (e.g. SPA BAG) and cedar spas should be peri-

odically treated with UV-resistant products. The coating is

lined with UV-resistant paint, but because of the previously

mentioned factors there is no guarantee that it will prevent

fading of color. With cedar coated spas wood treatment is

recommended yearly.

1. Periodically drain, clean, and refill the spa. We recommend

utilizing professional service for the refill.

2. Clean the filter once a month.

3. Shower before stepping into the spa.

Maintenance is recommended in the following periods:

• Weekly and before every use Check the spa water - see the

basics of water treatment

• Every 3 months

• Change the filter cartridges

• Every 3 months Change the spa water - see draining the

water

• Yearly Inspection of the spa is recommended - call a profes-

sional for proper inspection.

WATER TREATMENT BASICS

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Others manual(s) of Wellis Easy 7

Wellis Easy 7 User Manual - German - 124 pages

Wellis Easy 7 User Manual - Dutch - 113 pages

Wellis Easy 7 User Manual - French - 108 pages

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Wellis Easy 7 Manual

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