III. Turning the System On/Off
This will depend on the style of bypass that is installed on the system. Refer to the above diagrams of a
bypass in service and bypass position.
If the water to the house in not going to be used for over 48 hours, it is recommended to turn the water
supply off to avoid static pressure build up in the filter system. For periods of time over 1 week, the above
also applies, however we would suggest briefly flushing the system before use (allow the first few minutes
to run down the drain) specifically for drinking water. For this we recommend using “Fast Rinse” for 5-15
minutes to circulate the water.
Maintenance
I. Spare Parts
There are generally no parts (excluding consumables) on the system that will require periodic replacement
at regular intervals. Below is a list of items that may be applicable:
H1252FRP-2.5
HPF 12" x 52" FRP Tank (Grey) with 2.5" Opening
GT36-33K
Manual Multi Port Valve (Runxin) with Top and Bottom Screen Filters
GT36-
30
1" Drop Tube
GT5-6
No. 5 Filter Gravel 3.0
-
6.0mm 20kg
GT5-4
Calcite Granite 2 - 3.2mm (6 -
10 Mesh +/
-) 25kg
GT5-
0F
Coconut Based Granular Activated Carbon
20kg
GT5-2F
Coconut Based Silver Impregnated Granular Activated Carbon 20kg
GT5-25
Coal Based Carbon 25kg
GT5-15
Corosex pH Booster Filter Media 22.68kg
Replacement Filter Media
The lifespan of filter media varies according to feedwater conditions, usage and your unique filtration
requirements. Filter media can be replaced under the following guidelines under normal working conditions:
Calcite & Magnesium
Calcite & Magnesium naturally dissolve into the water over time, so check the pH every 3-6 months and top
up as required. Alternatively, if you have specific ph requirements (i.e. you have highly acidic water and
also use magnesium), test your pH ongoing and add more filter media when the pH drops below the
minimum desired level (ie. 6.8 pH). 75kg (3 bags) of Calcite Media will provide a full refill for the 12” x 52”
vessel – you should not have to empty the vessel to conduct a re-fill, as the gravel is re-usable. In cases
where Magnesium and Calcite are used together, add the calcite to the vessel first, then add the
Magnesium on top. Ensure that you do not overfill the vessel to the brim.
•
If the pH is around 5, fill the vessel with a ratio of 75kg (3x 25kg boxes) of Calcite to 7.5kg (approx. 1/3
bag) of Magnesium.
•
If the pH is around 4.5, fill the vessel
with a ratio of 71.25kg Calcite to 10
-12kg (approx. 1/2 bag) of
Magnesium.
Carbon
Carbon which has expired requires replacement, so check your parameters/requirements (i.e. testing for
free and total chlorine levels) every 3, 6 or 12 months and replace as required. Simple Free Chlorine
testing can be done after the filters to determine if the filters are still removing chlorine adequately from
your drinking water. These types of tests are generally inexpensive however for best results, lab tests are
recommended. To empty the vessel, you can use a syphon or up-end the vessel – please check with local
regulations for expired carbon disposal instructions.
20kg (1 Bag) of Gravel
and 25kg (1 Bag) of Carbon
Media will provide a full refill for the 12” x 52” vessel
