www.aquasafecanada.com | Home II + Remineralization Installation Instructions 08/13 | page 17
HOME II + REMIN SYSTEM FILTER CHANgE SCHEDuLE
Pre and Post filters: Pre (before the RO Membrane ) and Post (after the RO Membrane).
Stage 1,2 & 3 Pre-Filters – When to conduct a filter change.
Stages 1, 2 and 3 are your system’s pre-filters which need to be changed every 1000 gallons of purified
water produced. The average household consumes 3-5 gallons of drinking and cooking water daily.
At 5 gallons per day consumption rate a filter change is needed every 6 months or sooner. Mark
your calendar for a routine filter change every 6 months to ensure system performance.
Please Note: Maintaining the pre-filters of your system is key to ensuring system integrity in both wa-
ter quality achieved and overall longevity of its parts and components. The pre-filters are your system’s
first line of defence - protecting and ensuring the maximum lifespan of the R.O. Membrane. If you have
a PSI Meter (included with the combo system) you can also use it to determine when to change your
pre-filters (see option 2, page15).
Stage 4 – When should I change the Reverse Osmosis Membrane?
The R.O. Membrane is the very heart of your Aquasafe Reverse Osmosis System. The R.O. Membrane is
rated for an average of 4000-5000 Gallons of purified water production. A new R.O. Membrane will last
for approximately 3-4 years. Once again this calculation is worked out on the average as follows:
• A standard household will consume between 3-5 gallons of purified water each day for all its
drinking and cooking purposes. A 3 gallon per day consumption rate over a year’s time is equal
to roughly 1095 Gallons which therefore calls for a Reverse Osmosis Membrane change approxi-
mately once every 3.5 years.
• A 5 Gallons per day consumption rate over a years time is equal to roughly 1825 Gallons which
therefore calls for Reverse Osmosis change approximately once every 2- 2.8 Years.
If you have a TDS Meter a very simple but critical test you can perform in order to determine if your
R.O. Membrane needs to be replaced is to measure the PPM reduction rate of the purified (permeate)
water coming directly out of the R.O. Membrane housing (see Fig. 25 and 26 for how to do this).
If you are a 1 person household or a large family household it may be advantageous to monitor
approximately how many gallons of drinking and cooking water is consumed daily to factor the
proper filter change schedule for your individual situation.
• Example:
Large household or office environment consuming 8 Gallons per day.
1000 gallon pre-filter capacity / (8 GPD x 30.5 average days a month) = pre-filter change ap-
prox. every 4 months.
IF THE PRE-FILTERS ARE NOT CHANGED BEFORE 1000 GALLONS OF PURIFIED WATER IS
CONSUMED FROM THE SYSTEM, CHLORINE WILL BYPASS THE PRE-FILTERS REACHING AND
CHEMICALLY DAMAGING THE R.O. MEMBRANE RENDERING IT USELESS. It is important to
understand that even if chlorine is not present, after the 1000 gallon mark, seepage may occur
where very fine particulates will bypass the pre-filters stressing the R.O. Membrane greatly. This will
result in pre-mature fouling of the R.O. Membrane resulting in the R.O. Membrane needing to be
replaced before its due time – a costly mistake.
TIP
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