Swimming pool sand filters are one
of many solutions to hold your pool crystal clear and clean. This kind of
solution makes use of sand as a suggests to collect and remove debris from a
body of water. Sand is contained within a vessel or tank, water is pumped into
the major with the tank, and in to the internal distributor. This makes it
possible for the pool water to "rain down" and flow by means of the media. As
the water flows by way of, dirt and debris are collected and removed in the
water. The debris is held behind plus the clean water is returned towards the
swimming pool.
What are a number of the things located and connected
using a style of filter? 1. Multi Port Valve OR Handle Valve
What are a
few of the functions located on a regular Multi Port Valve? 
o FILTER - For regular filtering and vacuuming.
o
BACKWASH - For cleaning the filter bed of accumulated debris.
o RINSE -
Use following completing the backwash cycle to ensure all dirty water is rinsed
from the tank to waste.
o WASTE - By-passes the tank for draining or
lowering the pool water level and for vacuuming heavy debris directly towards
the waste line.
o RECIRCULATE - Water is recirculated by means of the
valve by-passing the filter.
o CLOSED - Shuts off the flow from the pump
towards the filter
Internal Components
two. Tank Or Vessel -
Most important body with the unit. 3. Top Diffuser - Makes it possible for the
pool water to enter the tank and distribute the water inside the tank. 4. Media
- Captures the dirt and debris in the pool water as it flows through. 5.
Laterals - Positioned beneath the media, makes it possible for the pool water to
exit the tank and flow back for the pool.
How are sand filters cleaned?
Most filters come equipped having a valve, typically known as a Multi
Port Valve. The Multi Port Valve has various settings enabling water flow to be
directed in many direct directions. One of many directions is BACKWASH. In the
backwash mode the water inside the tank is produced to flow in reverse. As
opposed to the water flowing from the prime in the tank down, the water from the
pool is fed into the bottom of your tank via the laterals. This causes the sand
to become churned, the dirt and debris which has been contained is flushed out
in the tank by way of a separate waste line. Lots of Multi Port Valves possess a
sight glass for viewing this method. 
Because the water is backwashed, make use of the sight glass
to inspect the water, because the water becomes visually clean the backwash
really should be regarded as completed, the pump stopped and also the valve now
put within the RINSE mode. Reenergizing the pump within the rinse mode permits
the water to flow in the normal operating direction and permits settling to
occur within the tank. Dirty Water is flushed out to waste in the course of this
process.
NOTE: This procedure will reduced the water degree of the pool.
As soon as the pool level is lowered further chemical substances can be
required. Retesting in the water will probably be necessary to identify the
variety and volume of chemical substances which will be expected.
What
if backwashing is just not sufficient?
If backwashing does not "clean"
the media, the time has come to disassemble the unit, empty the tank and replace
the sand. The media will deteriorate over a period of time, grow to be really
hard and crusty, and forming channels. When this takes location, backwashing
won't be adequate to let suitable filtration. It really is important to bear in
mind the following when performing this process.
Get to know extra about
slow sand filtration