| E.
Trasolini Pool Construction Ltd.
New Construction Renovations & Repairs Pools, Spa's and Fountains |
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1351
Adanac Street, Van. B.C. V5L 2C4
Ph. (604) 255-8551 Fax (604) 255-6681 Email trasolini@intergate.bc.ca |
Your "E. Trasolini Pool" is
one of the finest Swimming Pools in the industry
and is designed to give you countless years of
pleasure. It is constructed of only the best
materials available and is built to the highest
specifications of any pool around.
Your pool has been designed to provide you
with maximum enjoyment and minimizes time for
maintenance.
However the pool does require some
maintenance from time to time to keep it in
operation condition. This Owners manual will
answer many of your questions and will serve as a
reference for you as you enjoy your pool.
If you have any additional questions or
problems, call or
email
us. We are prepared to solve any problem for you
and we aspire to making your wonderful pool the
most enjoyable investment you have ever made, or
will ever make. Also please take a moment to read
our disclaimer
regarding the information contained here.
Daily Maintenance:
By now your pool should be full of water,
circulating the initial chemicals added and
heating.
Weekly
Maintenance:
After the first month of use of your new
pool, the interior plaster and tile must be
brushed once a week, vigorously with the brush
passing over all areas at the plaster and tile.
The interior of the pool should be vauumed weekly.
Winter
Months:
It is important that you keep your chemicals
balanced and the pool clean during the winter
months to avoid stains and costly repairs later.
It is imperative that the water level of the
pool be kept 1/2 way on the tile during the winter
months. If the water is allowed to rise on the
tile to the coping or cantilevered deck, the tile,
coping and deck will be damaged by freezing and
expansion. Damage caused by freezing because of
improper water levels is not covered by any
warranty. Do not put logs or other floating
devices into the pool in freezing weather. They
are not necessary and could cause damage to the
interior of the pool.
In freezing weather, when the pool equipment is circulating freely, the pool is clean and the equipment is running smoothly, it is normally understood that there is no danger of freezing. However, on rare occasions a system has frozen up for no apparent reason, except by acts of nature. If you are concerned with freezing temperatures, turn your heater on and maintain pool water temperature above freezing. Follow the following instructions for winter operation:
Care of the Pool Pump and Motor:
Turning Spa on Manually: - Click here for Schematics
To light the Pilot:
There is a considerable amount of condensation that drips from the heater when the pool water temperature is below 75° F. This is normal.
The pool heaters thermostat has an accuracy of ± 4° F. maximum temperature is normally preset at 102° F.
If the Heater quits working:
Symptoms & Solutions to common Pool problems:
The previously mentioned equipment and proceedures should keep your pool free of most solid particles that could make it unsightly. However there are contaminants constantly being introduced into the water that can be controlled only with chemistry.
Even though your water is almost completely free of dirt and other solid particles, it will not have the crystal clear sparkle you want unless the chemical balance is correct.
You do not have to become a chemist to keep your pool pure and clear, but you do have to learn a few basic facts.
Your Test Kit Is Your Best Friend
The test kit that you get with your swimming pool is simple to use and it tells you almost all you need to know about the chemistry of your water. Use it frequently and you will enjoy your pool more.
The test kit measures the two main things that you must keep under control:
What Is "pH"
An over simplified definition of pH is, "the degree of balance between acid and content of alkalinity of the water." What it means to the pool owner is that he must occasionally add chemicals to raise or lower the ratio to keep his pool in perfect condition. Your test kit will give you a pH "reading" that makes it easy to know whether the pH is correct and what to do about it even without fully understanding the fine points of the chemistry involved.
Maintaining proper pH is one of the most important and most often neglected swimming pool operations. Improper levels can cause cloudy water, staining, etching, scaling of the pools' plaster, discoloured water, excessive eye irritation, and corrosion of metal accessories such as pumps, ladders, grab rails, etc. It can even damage your equipment and prevent chlorine from working, thus increasing the cost of chemicals more than necessary.
To raise the pH add one unit or 1 pound of soda ash for each 10,000 gallons of water. Distribute directly into the deep end of the pool. Allow the water to recirculate 2 to 3 hours before re-checking the pH, then repeat the treatment only if the test shows it is necessary. Click here for a table to show your gallonage, or click here for a calculator in U.S. gallons.
CAUTION: Never swim for at least 15 minutes after adding Muriatic Acid to the pool.
Poolside Testing
The pH is normally maintained at 7.4 to 76. An exception would be where natural water contains some mineral imbalance. In such cases, it might be advisable to vary the pH slightly to compensate for this condition. Your professional service company should be consulted for this advise.
A phenomenon of new or newly plastered pools is an unusually high pH for the first few weeks of operation. This is caused by an "alkaline bleed-off" from the plaster and you should expect to experience some temporary difficulty in maintaining pH during the "curing" period.
The pH will be relatively stable when the chemicals recommended with this program are used, provided the pool water is properly balanced. The test kit will indicate whether to lower or raise the pH in order to stay in the desired range. The most common need is to lower it.
Chlorine
Chlorine is a sanitizing agent that is
available in a variety of forms. It can be
obtained as a gas (100%), as the liquid sodium
hypochlorite (5-15%), and in various forms such as
calcium hypochlorite (65%), lithium hypochlorite
(30%), dichlorisocyanurate (55-65%) and
trichlorisocyanate (80-90%). The most common
chlorine you will use is trichlorisocyanate "pucks".
When any of the chlorine products are dissolved in
water, hypochlorous acid (HOCL) and hypochlorite
ion (OCI) are formed.
Hypochloris acid is an excellent sanitizing
compound that is responsible for the majority of
the sanitizing power that we associate with
chlorine. Conversely, chlorine in the form of the
hypochlorite ion is not a good disinfectant and
does not actively contribute in the purification
process. The amount of hypochlorous acid and
hypochlorite ion that is produced when chlorine is
added to the water is directly related to the pH
of that solution. This relationship is illustrated
below.
At pH 7.0, 75% of the chlorine exists in the active hypochlorous acid form. Increasing pH to 8.0 reduces the active hypochlorous acid concentration to only 25%. The term "free active chlorine" is given to both hypochlorous acid and hypochlorite ion. However, in pool and hot tub chemistry, we generally restrict the use of this term to represent only that chlorine which is in the form of hypochlorous acid. This is the form that disinfects and at normal concentrations it cannot be detected by taste or smell, nor will it cause eye irritation.
When free active chlorine reacts with ammonia, organic nitrogen compounds and other contaminants in the water, a class of combined chlorine compounds are formed. These combined forms are known as chloramines. The chloramines do not exibit any substantial sanitizing power and are actually the cause of some unpleasant problems. They are known to be responsible for eye and mucous membrane irritation and also the source of chlorine odours. As a result of these qualities, chloramines should be removed from the water when they have reached a level of .3ppm or more. The accepted method for removal is known as "breakpoint chlorination or "shocking". it is achieved by introducing ten times the combined chlorine content in the form of free available chlorine to the water. This large concentration of free chlorine will eliminate the combined chlorine and leave behind a residual that is in the form of free active chlorine.
Testing the chlorine level plays an important role in the maintenance of pool and hot tub water. It is also imperative that the method used for testing be able to distiguish between free active chlorine and combined chlorine. This is easily accomplished by using the DPD (N,N-diethyl-p-phenylenediamine) method used in test kits. Addition of two liquid reagents to a sample of water containing chlorine results ina colour that indicates only free active chlorine. It is matched to a permanent colour standard and the concentration is recorded. Subsequent addition of a third liquid reagent to the same water sample produces a colour indicative ot the total chlorine concentration and is matched the same way. Thus, the chloramine or combined chlorine content is calculated simply by subtracting the free chlorine value from the total chlorine value.
Bromine
Bromine is another sanitizing agent that can be used in the purification of water. it is available in a solid stick form, bromochloro-5.5 dimethylhydantoin, which contains 66% bromine, and 30% chlorine. It can also be obtained as a salt, sodium bromide, which is dissolved in water and converted to free bromine by the addition of an oxidizing agent such as potassium mono-persulfate.
When bromine is used as a disinfectant, the water chemistry of the bromine compounds differ from that of their analogous chlorine compounds. The forms of free bromine are hypobromous acid (HOBr), which is a very active disinfectant, and hypobromite ion (OBr), which is considered to be relatively inert.
At pH 7.0, 98% of the bromine exists in the active hypobromous acid form, while increasing pH to 8.0 reduces this percentage to 83%. In the pH range used for pools and hot tubs, the active form of bromine is not as pH dependent as the active form of chlorine.
Free bromine is a term which represents bromine in the form of hypobromous acid. When free bromine reacts with contaminants in the water, combined bromine compounds called bromamines are formed. A striking difference between bromamines and chloramines is that bromamines are good disinfectants that exibit activity similar to hypobromous acid
Bromine can also be tested by using the DPD method but the testing proceedure is slightly different from that used for chlorine. Since free bromine and combined bromine are active disinfectants, there is no need to distinguish between the two forms. The addition of two liquid DPD reagents to a water sample containing bromine indicates both the free and combined forms and is representative of the total bromine concentration.
Stabilized Chlorine
Dissolving chlorine in water makes it unstable and subject to decomposition by ultra-violet light. It has been found that cyanuric acid forms a loose compound with chlorine that inhibits the ultraviolet reaction without affecting the germicidal activity of chlorine. Cyanuric acid can be applied to pools, hot tubs and spas as the free acid, the sodium salt of the free acid and as sodium dichlorisocyanurate or trichlorocyanurate.
The use of cyanuric acid in public pools and spas is regulated in many provinces. Some provinces prohibit it's use and other regulate it at a limit of 100 ppm while the manufacturers recommend a level from 30 to 75 ppm. Some health departments suggest that when cyanuric acid is used, the chlorine level should be increased.
The test for cyanuric acid is based on the fact that it reacts with melamine to form an insoluble but suspended product that makes the solution cloudy. This turbidity is an index of the cyanuric acid content and the cyanuric aicd level is estimated by pouring the cloudy solution into a calibrated tube until a black dot at the bottom of the tube is no longer visible.
pH
pH is an essential factor in proper water balance. It can be described as a measure of the acid activity in the water and is controlled by the concentration of the hydrogen ion [h+]. The pH scale runs from 0 - 14 with a pH of 7 being neutral. As the pH increases from 7 up to 14 the water becomes more alkaline. As the pH decreases from 7 down to 0 the water becomes more acid. The control of pH is important because it affects bather comfort, sanitizer level and overall water balance.
The pH can fluctuate for a variety of reasons and various sanitizers have different effects upon the pH. Below is an indication of how some sanitizers can influence the pH.
Gas Chlorine - pH decrease
liquid chlorine - pH increase
calcium hypochorite - pH increase
lithium hypochlorite - pH increase (slight)
dichlor compounds - pH decrease (slight)
trichlor compounds - pH decrease
stick bromine - pH decrease (slight)
salt bromine/oxidizer - pH decrease (slight)
iodine - pH decrease (slight)
pH should be monitored often and frequent testing is a necessity. Kits for colourimetric pH determination contain permenent colour standards and indicators that contain inhibitors to prevent halogen interference. Most kits also supply reagents to perform acid and base demand tests.
Calcium Hardness
Originally the term hardness referred to the ability of water to lather with soap. There are two principal types of hardness in water, calcium and magnesium. We need only concern ourselves with the contribution of calcium hardness as it applies to the concepts of water balance. It is an intregal part of water balance and is discussed in that section.
Methods of lower calcium hardness in pools and hot tubs are difficult, but are frequently accomplished by dilution. Increasing the amount of calcium hardness is easily done by adding calcium chloride. When testing calcium hardness the EDTA (ethenediaminetetra-acetic acid, a chelating agent) method is the method of choice because it is simple, rapid and accurate. Test kits employ this method.
In swimming pools it is important to maintain a balance of calcium between the water and the surrounding pool areas. ie: pool walls.
Total Alkalinity
Total Alkalinity is a measure of water's ability to neutralize acid. In swimming pool, hot tubs and spas, alkalinity is usually due to the carbonate content, although phosphates, silicates and cyanurates, if present, will contribute. Since carbonates are buffers, the alkalinity of the water is a measure of its ability to resist pH change. Total Alkalinity is important in water balance calculations.
It is often necessary to adjust total alkalinity for proper water balance. it is inreased by the addition of sodium bicarbonate (baking soda) and decreased by adding acid to the water (sodium bisulfate or muriatic acid).
Total Alkalinity is measured by performing a simple acid-based titration. A measured sample of water is titrated with a standard aid solution and the endpoint is indicated by a colour change using a total alkalinity indicator.
Water Balance
One might be led to believe that if he controls the pH and sanitizer (chlorine or bromine) level in the water, that he need do nothing more. This is true in some cases but when problems develop such as cloudiness, scaling or corrosion, one must look further into water chemistry. Some years ago Dr. Wilfred Langlier of the University of Southern California developed a relatively simple formula for calculating what we call water balance. By using data for the solubility product of calcium carbonate at various temperatures, he derived an equation as follows:
SI = TF + log CH + log TA + pH - 12.5
SI stands for saturation index, TF is a temperature factor, CH is calcium hardness, and TA is total alkalinity. When the appropriate figures are entered into the equation, the value of the saturation index tells us if the water is in balance. If the value is found to equal zero, the water is in perfect balance. If the value is found to vary from zero by plus or minus 0.3 pH units, the water requires attention. if the variation is +0.5, cloudiness and scaling of water will result. If the variation is -0.5, corrosion of concrete surfaces and possible metals will result. Since the Langlier Index was calculated using the solubility product of calcium cabonate it can be said that corrosion refers only to the corrosion of concrete surfaces which usually contain calcium in some form. However, when water is in balance at room temperature it can be rendered seriously out of balance when heated as in a pool, hot tub or spa. This could result in the deposition of a film of calcium cabonate on the inside surface of the heater tubes. Some would call this a protective layer, others would call it an insulating layer interfering with the efficiency of the heater. When this layer is removed by water that is out of balance in the corrosive mode, the metal loses its protective coating and corrosion could result. Water balance in a heated envoironment merits serious attention.
To determine if your water is in balance, one need only test for pH, calcium hardness and total alkalinity with a suitable test kit and calculate the pH of saturation. Your chemical supplier often provides testing for you and will instruct you on these chemical applications.
Proper Testing
Water may become coloured due to algae growth. Some algae gives the water a greenish tint, while black algae usually grows to produce spots. A chlorine shock will oftentimes remove algae, but if the problem is persistent, draining and scrubbing the pool with acid may be necessary. Algaecides such as quanternary ammonium compounds or copper based solutions are also used to fight algae.
Iron, depending on the oxidation state, may be green, brown or red. Copper is blue or blue-green and manganese is brown or black. if these metals are present in sufficient amount, they will cause problems. Test kits are available to measure the presence of these metals. Treatment usually consists of chlorine shock or alum flocculation to remove these metals. There are also sequestering products available which will keep the metals tied-up and prevent them from staining.
Cloudy water may be caused by unbalanced wtaer with a positive saturation index with either pH, hardness and alkalinity, or all being high.
Occasionally, high chloramine levels have caused cloudiness and high total dissolved solids can also be blamed for cloudy water. Filtration problems can also be a cause.
Chlorine odours and eyeburn can usually be traced to high chloramine levels. Superchlorination will relieve this type of situation.
IF YOU ARE NOT
SURE
PLEASE CALL
THANKYOU!
Ed Trasolini
E-Mail
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DISCLAIMER: Neither Ideal Distributors Ltd., nor E. Trasolini Pool Construction Ltd. shall not be responsible for any losses, costs, damage, injuries or liabilities of any nature whatsoever as a result of using this Owners Manual or the information contained on this website for reference in the operation of any swimming pool, spa and/or equipment.