treesse FUSION SPA - Maintenance; Changing the Filter Sand

30
Fusion Spa minipool
EN
Maintenance
1
CHANGING THE FILTER SAND
Changing the lter's sand should be done after
having disconnected the minipool's main power
switch and after having emptied it.
The sand ltration system is certainly the best, but to be
truly effective there must be sufcient sand in the lter
and it must not be packed.
Hard, packed sand is no longer an effective lter bed
because some preferential channels have been formed
which must be eliminated as soon as possible.
The sand should be checked and, if necessary, replaced
at least once a year.
If occulants are used, employ minimum doses and check
the sand even more frequently.
When lling is complete, reposition the lter in its
compartment and check that the connections are
correct and that there are no leaks.
It is recommended to dispose of the dirty sand
according to the regulations in force in the
country of use.
LEGEND FIGURE 1 ON THE NEXT PAGE:
A) incoming water
B) outgoing water
C) drain
PROBLEM POSSIBLE CAUSE SOLUTION
Low water ow
The sand of the sand lter is very dirty
or the water supply is excessively hard
and has clogged the sand lter.
Use suitable products to return water
hardness to the indicated levels (see
page 22).
Replace the sand as indicated,
following the instructions on
granularity.
Sand inside the minipool
It is normal for there to be a minimum
amount of sand inside the minipool
during the rst hours of use of the
sand lter. After the rst cleaning of
the bottom the problem should no
longer exist.
Cleaning the bottom with a minipool
cleaner.
Make sure you have used sand with
granularity from 0.5 to 1 mm suitable
for this type of use.
Water leaks
Some component is probably not
fully tightened or the seals are worn.
Check the tightness or replace the
seals.
The water of the minipool does not
become clear
Most likely the lter sand needs to
be changed or the pH of the water
supply is incorrect and so algae
grows.
Use suitable products to return water
hardness to the indicated levels (see
page 22).
Check the condition of the sand and
replace if necessary.
Use anti-algae products and
disinfectants.
Remember that the sand lter does
NOT block metal oxides that may
over time damage components of
the minipool.
More information
WHAT IS THE SAND FILTER?
The sand lter is an effective minipool lter connected
to the recirculation pump's feed line. It consists of a
large container that is two-thirds lled with quartz sand.
It retains the dirt and the suspended particles present
in the water.
WHAT IS BACKWASHING?
Cleaning the sand lter is essential because it retains
polluting materials like hair or leaves and sediment if
the minipool is installed outdoors.
The best cleaning is achieved with a backwash, i.e.,
with a jet of clean water from the bottom of the lter
so that the dirt can ow into the drain.
In Treesse minipools the backwashing is automatic,
running automatically every 48 hours of minipool
use, but can be
forced manually
following the
procedure
indicated on the
side.
3 seconds
10 seconds