Cartridge
Filter
Cartridge Filters are the filter of choice for most spas,
and smaller above ground pools. The cartridge filter element
traps dirt and particles of 25 - 100 microns in size.
The cartridge is removed from the tank and hosed thoroughly,
with a high pressure hose to remove dirt when the pressure
gauge rises 8 - 10 lbs. above its clean reading. Each
time the filter is cleaned, some of its filtering ability
is reduced. The cartridge should be replaced every 2 -
5 yrs, depending on the work it was asked to do. If the
filter was a bit undersized, and had some algae every
year and lots of tree debris, etc. then it may last only
1 - 2 years. Nicely sized cartridge filters can operate
for 6 months between cleanings.
|
How
do I Backwash my Cartridge Filter?
There is no backwash valve on a
cartridge filter because today's pool filter cartridges
aren't made for backwards flow. Instead, the pump
is shut off, air bleeder opened, lid removed, cartridge
removed, hosed thoroughly top to bottom, and replaced.
It's a bit of a pain to do, but hopefully the filter
is sized so that it's a 1 - 2 time per year job.
Another advantage is that cartridge cleaning doesn't
waste as much water as backwashing.
Soaking the cartridge in a TSP (trisodium-phosphate)
or similar solution prior to hosing will improve
your cleaning. Do not use TSP if you utilize Baquacil
or Soft Swim for sanitation.
Use of a clarifier or Chitin product like Sea-Klear
is a great help to a cartridge filter. Some people
also increase the filter efficacy by adding a small
amount of synthetic filter aid powder (1 - 2 cups)
through skimmer. D.E. powder is not recommended,
as it can clog the pores of the cartridge.
Filter Cartridge Replacement:
Right off the shelf for $40 - $100, depending on
its size. No professional labor needed.
|
|
Filters
Freight
charges may apply to any order being shipped by freight or denoted by
truck symbol.