Each pool owner knows that quartz sand in the filter must be changed at least once a year, before the season. Everyone knows, but not everyone does, considering this operation to be laborious and not so necessary.
Here are two main signs of sand pollution in the pool that you can determine yourself without opening the entire system.
The first and main – pressure in the filter system. If the pressure in the filter reaches, and even more so exceeds 0.6 bar, this is the main sign that the sand in the filter has come time to change.
Rinse or change? Open the filter and lower your hand into quartz sand, if you started to feel lumps, then this is a sure sign that your sand does not filter anything. In this case, the full -time flushing flushing will definitely not change anything. It is time to independently change the sand in the filter.
This operation is not as difficult as it might seem.
Even before the start of work, it is necessary to stock up on quartz sand. High -quality quartz sand Application store watermart. What is good Water Mart online store is a wide fractional line of quartz sand. Now the Watermart store offers sand 6 fractions from 0.4 mm to 6 mm.
The first thing to do is turn off the filter from the system. Then, using an industrial vacuum cleaner, pump out sand from the filter tank. It is very important to control the full pumping of quartz sand from the filter. If you found lumps before the start of work, then most likely at the bottom you will encounter a “cemented” layer. This layer should never be broken. For its elimination, any sour solution is best suited. The most optimal is a weak solution of hydrochloric acid, but you can also use an automobile electrolyte.
Quartz sand is well calcinated, to remove traffic jam, you need to chemically destroy “these connections”. At the end of cleaning the tank, fill the filter with fresh quartz sand. It is better to use quartz sand of at least two fractions (better than neighboring ones, for example, 0.5-1.2 mm and 0.4-0.8 mm). Before filling with sand, put water into the tank, this will save the surface of the tank from unnecessary deformations. Do not forget that after filling the tank with quartz sand, first the filter must be turned on in the cleaning mode for 5 minutes. This will allow you to remove small fractions from the sandy filter and “denser” to lay the filter material.