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By: George Brown
When filtration systems do not receive proper upkeep, dirt and debris can collect in the pool and make it unfit for swimming. Changing the sand for sand filters every few years can keep the water crystal clear. Neglecting to do this can lead to some unexpected expenses such as having to procure a professional to come out and unclog the system and replace any parts that may have been damaged.
This type of filtration unit uses a special grade of sand as a means for straining the debris out of the pool. Liquid goes through a diffuser in order to enter the tank where it is sifted through the fine grains. Anything over 40 microns in size will be caught between the granules and not allowed to return to the swimming area with the clean water.
There are a few warning signs that will let one know that the pool is in need of some attention. For instance, when the water becomes cloudy and seems to have an extraordinary amount of dirt and debris floating in it, that means the filtration is not functioning properly. If the back wash timing shortens or the motor begins to sound strained, those are two or important signals.
Some people will wait until the absolute last moment to change the granules in the filter, but this could actually be doing damage to the system and to the motor that runs it. As a general rule, 5-7 years is all one should allow to pass between full cleanings on the filtration unit. There is a limit to how much the current grains can function effectively before they wear out and become useless.
The granules utilized in pool systems are ground to between . 45 and . 55 mm in diameter and have very rough exteriors when new. It is this roughness that makes the grains so efficient. Debris and dirt gets caught up and snagged on the sharp edges and trapped so that it can not return to the swimming area.
Over time, the sharp edges are worn smooth in much the same way rock in a river are. Once they become rounded, they tend to ball together so that everything simply flows right over them and nothing is actually removed from the pool. Allowing the grains to go bad will also increase the chemical costs of treating the water because more sanitizer will be required.
These systems are somewhat complicated with all the pipes and valves contained on and inside of them. Each model will have a slightly different method by which it should be changed and for best results, manufacturer\’s instructions should always be followed. Those pool owners who are not comfortable with doing a bit of plumbing work should consider contacting a professional to perform the task.
A properly maintained filtration system is an absolute necessity for a clean pool. Only the right sand for sand filters should be used in the unit and it should be changed on a regular basis. Consult the manufacturer\’s guidebook or website for any questions on may have regarding a particular model in order to get the best advice.
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