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0,4-0,8 mm
1. Place the inner collector correctly on the bottom of the filter .
2. Cover the mouth of the collectar situated on the inside of the filler with a plastic
protector ta make sure sand does not enter .
3. Put the sand inside the filler: The height of the sand should not exceed 2/3 of the height
of the tank.
The silica sand lasts far an unlimited period of time. lt should only be replaced if lost.
Record the reference of the level of silica sand far future replacement.
4. Remove the remains of sand from the filter opening and take off the protective plastic.
5. Put the selector valve with ils coupling and secure with the metal band or seal .
6. Firmly tighten the screw on the metal band which joins the valve to the filter.
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