Install the filter on a level concrete pad or plinth, it
is important the filter is level.
All pipe work and valves must be supported, do not hang
the valves from the filter flanges
Fit an air relief valve to the top of the filter, and vent
filter at start-up
Before adding the AFM media, make sure all the nozzles on
the base of the filter are properly fastened
Fill the filter with clean water to a depth of
at least 400 mm. Turn on the air blower if
used, and check the air is evenly distributed
between all of the nozzles.
Carefully add the Grade 3 AFM to the filter, the water
layer helps to level out the bed and cushion the shock
loading on the nozzle plate. Level the bed once all of the grade 3
has been added, then add all the grade 2, level the
bed and repeat with the grade 1 AFM. The smallest grade 1 AFM
should be on top of the bed. The ratio of filter
media should be around 20% grade 3, 20% grade 2 and
60% grade 1
If there is a sight glass viewing port on the filter, the
bed depth should be at the bottom of the window
