DRYDEN AQUA AFM MINI-BAG Handbuch für Installation und Inbetriebnahme - Seite 2

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Before the installation, determine the total quantity of AFM
Check how much sand is required for
your filter according to manufacturer's
instructions
Ø diameter (mm)
Use the following AFM
Use 100% AFM
ng
®
Mix grade (0.4 - 1.2 mm)
MINI-BAG
| INSTALLATION & COMMISSIONING MANUAL
Determine the total quantity of AFM
AFM
®
and quantities by weight should be reduced by 15%.
If no indications are given on your filter on the amount of filter
media required, do the following calculations:
1. Calculate filter surface area (m
2. Calculate filter media volume (m
3. Calculate quantity of AFM
E.g. Filter diameter = Ø500mm. Media bed depth = 0.4m
Filter surface = 0.25 m x 0.25 m x 3.14 = 0.20 m
Filter media volume = 0.20 m
Quantity of AFM
= 1'250 kg/m
®
grades
®
MIX GRADE
100%
0.4 - 1.2 mm
®
has a lower bulk density than sand (1,250kg/m
) = radius (m) x radius (m) x 3,14
2
) = filter surface area (m
3
(kg) = 1,250 kg/m
®
x filter media volume (m
3
2
x 0.4 m = 0.08 m
2
3
x 0.08 = 100 kg
3
you need
Quantity of sand x 0.85
= Quantity of AFM
®
you need.
®
)
3
2
) x media bed depth (m)
)
3