Pentair Sand Dollar SD40 Guide D'installation Et D'utilisation page 12

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3. Now, move the system to its final position. The system must be placed
on level solid earth. The entire system filled with sand and water can
weigh several hundred pounds.
Figure 4.
4. Be certain to install the precise amount of filter sand listed on your
filter nameplate. You must use only No. 20 standard silica sand
having a uniformity coefficient of 1.75 or less. No. 20 silica sand has
a particle size of .018-.022 inches (.45 to .55mm). Before pouring the
sand into the filter, look inside and check the lower under drain for
broken or loose laterals (or fingers), which may have been
accidentally damaged by rough handling during shipment. Replace any
parts as necessary.
5. Install the sand guide in the top of the filter and fill the tank about half
full of water. Pour the sand into the top of the filter at a slow rate so
that the weight of the sand does not damage the laterals. After the
required amount of sand has been installed, remove and discard the
sand guide. Wash away all sand around the opening at the top of the
tank.
Figure 5.
Pump and Sand Filter System Installation and User's Guide
Release latch
Pump foot
Claw fastener