Europa "self-cleaning filter keeps all the unpleasant
materials suspended in the water, like: sand limestone incrustations
and collaidal substances above 60 largeness (standard of
filtration). The water flow on going through the cartridge
filter pushes on the meshes direction the present particles
which are keept. By the timeand according the water qualitythe
filtering elements clog up. to restore the cartridge filtering
effectiveness is very important to start an active washing.
Opening the draing-valve, a depression is creatied inside
the glass, that lower the cartridgeand reverts the cleaning
waterflow. The keep particles on the meshes are pushed on
the water grain. Closure of the valve results in creation
into the filter of the previous pressure that rises the
cartridge and places the filter in service again. Usually,
two or three repeated actions are enough to clean the cartridge.
When the pressure-gauge is loosing load up on the head filter,
it is suitable to proceed with cleaning it, because the
cartridge is clogged again. The Opur' s glasses filters
are made of Trogamid-T, a plastics featuring extraordinatìry
resistance to cechanical stresses, to ageing and a sudded
change in temperature. The Trogamid-T stability is confirmed
by a breaking-test (55 bar for 1/2" -3/4" -1"
-1 1/4" filter, 40 Bar for 1 1/2" -2£ filter).
Its molecular structure can be modified only by alcohol
and some acids. It is therefore recommended to clean the
glasses with water only.