Skimmer pools are older, less aesthetic and cheaper types of swimming-pools. These pools are recommended for customers, who do not mind more difficult maintenance of the pool and its less attractive appearance.
Patria swimming-pools with skimmer are completely sunken in the terrain. Level of the water is around 10 – 15 cm below the upper edge of pool.
How do these pools work?
The pump sucks water from two branches. From water surface (skimmer) and from bottom suction nozzles at the same time at a ratio about 2:1. This ratio is set at the lower suction valve, which is open up to approximately 1/2.
Pre-cleaning of water is ensured by hair trap, which is a part of a recirculation system. Filtrating itself is assured by pressure sand filter, which is equipped with a 6-way valve. With this valve the desired mode of operation is set – filtration, rinsing, backwash, circulation or wasting. Water is coming from top to the bottom of the sand filter and impurities are trapped here. After a certain time there is a filter clogging, resulting in increased pressure in the filter. If pressure rises above the reference value, it is necessary to clean the filter. In the washing process, water is coming from bottom to the top of sand filter and removes trapped impurities out of the sand. After rinsing, a “back wash” comes. Water is going from top to the bottom of the sand filtration and is let out to the canalization for a while, because there are still a lot of impurities in a filter. After this, new filtrating cycle starts again.
Skimmer pool, respectively its upper edge could be finished in these three ways:
- As classical edge,
- As edge equipped with a special “pipe”,
- Or as pool edging (stone, concrete…).