13
Maintenance
It is highly recommended to change your filters periodically to
maintain the highest level of filtration from your RO system. Changing
your filters regularly can also prolong the life of your RO system. The
table (adjacent page) shows how often it is recommended to replace
each filter/stage in your system. This is dependent upon water
quality; water hardness & particulates may result in filters being
changed more regularly than shown:
Filter
Stage
Material
Functions
Material life
(depending on
water quality)
1
st
Stage
PP 5 Micron
Removes un-dissolved
contaminants i.e. sand, silt and
rust etc.
6 Months
2
nd
Stage
Granular
Activated Carbon
Removes chlorine, organic
fertiliser, agricultural chemicals
and Insecticides.
6 Months
3
rd
Stage
Carbon Block
Re-filtration of 2
nd
stage.
6 Months
4
th
Stage
RO Membrane
Removes heavy metals,
bacteria, hormones and fluoride
etc.
1-3 Years
5
th
Stage
Inline Carbon
To improve taste and odour.
6 Months
6 Stage Unit
–
It is recommended to change the mineral filter every 6
months (R).
RO Membrane Pressure Washing -
When the RO membrane purifies the water, there are impurities and
bacteria left on the surface of the membrane which may affect the
quality and volume of the purified water. The RO membrane needs to
be cleaned periodically. Our units will flush the RO membrane
manually by turning ‘on’ the flush valve (L1 – see PIC 1 and PIC 2)
for 2-3 minutes once a week. Please ensure this valve is
CLOSED
when complete.
(L1 Valve-
looking down at the valve from the front of the unit,
the ‘off’
position is to the left (9
o’clock) the ‘on’ position is down (6 o’clock).
