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9.5 Insert the filter cartridge into the tank
Insert the filter, prepared with the inflow pipe and the inlet stilling system, into the tank. Fix the filter into
place using both rubber ring adaptors facing outwards from the dome with the 250mm adaptor on the inlet
and the 150mm adaptor on the outlet
. These adaptors “butt” up against the filter body and are joined by
the Graf Spannfix collars (supplied). They provide a simple disconnection of the filter body without tools.
To position the Minimax Filter correctly - push the 150mm rubber ring adaptor on the outlet, fully in, by
doing this you will be positioning the inlet stilling system so it sits in between the tank bottom ribs. See
picture below.
9.6. Commissioning
Before installing the filter, please remove the rubber seals and clean the
filter sieve in a dishwasher (40˚ -
max. 60˚). At the time of commissioning re-remove the filter sieve and check its cleanliness, it is
important to clean any dirt/debris that may have entered the filter.
Due to the designed structure, the filter sieve functions only in one flow direction the direction is marked
on the metal ring with an arrow on the inlet side.
When installing the filter cartridge pay attention that the joint seam of the sieve surface is positioned
upward.
9.7. Regular Maintenance
To ensure maximum water yield, the filter must be checked for dirt and debris immediately following the
first rainfall occurrence after the tank installation. It must also be checked after any "major" rainfall event
and/or after any long dry spells.
The complete system is to be inspected at least every 3 months for leakage, cleanliness and stability. To
ensure the expected water yield is delivered, it is important to inspect and clean the filter sieve at regular
intervals. The Spray Cleaner when connected provides additional insurance against filter blockage; it can
be plumbed up to the tank rainwater pump line. Depending on the connection it can be operated
manually by use of an external ball valve or automatically by the installation of a timer and solenoid valve.
When carrying out a service of the integrated filter it is also required that the overflow siphon is checked
and cleaned.
Correct Installation of Graf Minimax Filter Package
9. Minimax Filter Package Installation cont...
To Storm Water
When installing the filter cartridge pay attention that the joint seam of the sieve surface is
positioned upward.
