(or sizing problems).
in the pool?
news. If it hasn't blown in, or been carried in on the feet of swimmers,
it's likely coming from the filter. A broken lateral or standpipe
may be the cause. You'll need to empty the tank, locate and make the
repair, refill with fresh sand and test.
replace filter sand, you'll first need to empty out the existing sand.
One method is to spread a tarp out beneath the filter drain assembly.
Then remove the entire assembly, turn on the pump, and step back!
The water pumping through the filter will remove most of the sand
out the drain hole. Another method is to remove the drain plug only
and allow the filter to drain for several hours or days. Then, remove
the top dome or multiport valve.
you have the Triton style dome on the top of the filter, you'll need
the octagonal dome wrench to remove the dome. Once the dome is removed,
gently twist the baffle/pipe out of the way so you can get a scoop
to the sand.
you have a Top Mount Multiport, you may need to cut some pipes
to remove the valve. You can reconnect them later with unions or couplings.
Once these pipes are cut, the clamp band connecting the valve to the
filter is removed, and the valve pulls straight up and off. Plug or
tape or cover the standpipe so you don't spill sand in it. Then you
can use a shop vacuum to suck out the sand, or you can use a small
cup to scoop out the sand.
very careful as you scoop or suck, not to knock or break the laterals
at the bottom of the tank. They can be brittle when the get older,
and it may be wise to replace
laterals at the time you replace the filter sand. Use a hose to
wash out the sand beneath the laterals. When the tank is empty of
sand, replace the drain assembly, using silicone
sealant on the threads. Then add enough water to cover the laterals,
so the new sand pouring in won't crack them. Again, if you have the
top mounted multiport, cover the standpipe opening. If you have a
side mounted filter valve, gently push the intake baffle to one side,
or wrap the baffle with a small plastic bag to keep the sand from
entering the pipe as you pour it in.
it in! Use only specially graded pool filter sand; #20 silica sand,
45 - 55 mm. On top mounted multiport filters, use care to keep the
lateral/ hub assembly in the center, and on the bottom of the tank.
After each bag of sand is added, make sure it is still centered. It
may be useful to have a helper hold the standpipe in place while the
sand is added.
the recommended amount of sand only; more is not better! If you don't
know this info, contact your dealer or manufacturer. Most tanks are
filled only about 2/3 of the way full, to leave enough "freeboard" space
on top. When full, lube o-rings
and reassemble filter top. Make sure lid is very secure, lids that
blow off can be very dangerous. It's a good idea to replace the o-ring
on the filter domes.
the filter is started up, start up on "RINSE"
setting first (if you have a multiport valve).
Then backwash and rinse again. If you have a push-pull valve, backwash
first. This final step will prevent putting a lot of "sand dust" into
the pool after a sand change.
filter tanks rarely leak themselves, however leaks often occur in
and around the multiport interface. A common complaint is that water
is leaking out of the backwash port of the multiport (six position)
valve. Slight adjustments of the handle may temporarily solve this
problem. A more permanent repair may necessitate replacement of the spider
gasket inside of the multiport. You may also have leakage up around
the middle of the handle on the valve, which external adjustments
rarely fix. This usually requires replacement of a Teflon washer and
sometimes the spring as well.
may have a push-pull valve, or slide valve as it is sometimes called,
instead of a multiport valve. Leaks can occur through the top
of the index plate, or out of the backwash line. This is a easy
inspection to determine what o-rings need
to be replaced. Leaks can also occur at the bulkhead unions where
the valve attaches to the side of the filter, or around the threads
on a top-mounted multiport. The drain plug can leak if not secured
tightly or properly sealed.
a one hour job, plus internal valve components; gaskets or springs.
they don't last forever. But almost. A new filter may be in order
if your current filter is outdated (15 - 20 yrs old) and difficult
to use or get parts for. If the filter tank has cracked, usually from
freeze damage or possibly from closing off return valves while the
pump is running, a new
filter is in order. Replacement is usually fairly simple, with
just a few plumbing fittings needed.
is size dependent, however, as an example, we sell the Pentair
Tagelus TA-60D filter for $294.97.
D.E. filter is the most efficient type of pool filter on the market.
It can trap particles down to 3 - 5 microns; well below what the
naked eye can see. As with sand filters, the pressure gauge indicates
a need for backwashing when it reads 8 - 10 lbs. higher than its
clean reading. After backwashing a D.E. filter, a new application
of D.E. filter powder is added to the filter by pouring into the
skimmer. An annual breakdown of the filter is necessary to thoroughly
clean D.E. filter grids.
D.E. filter requires that the operator (you) add D.E. powder to coat
the filter grids inside of the filter tank. This widely available,
inexpensive powder is actually the microscopic..... (continued........)
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