Das Handbuch ansehen und herunterladen von Astralpool Sandfilter The filter should be installed as close as possible to the swimming pool and preferably View and Download Astral Pool ATLAS 36596 manual online. ATLAS 36596 swimming pool filter pdf manual download. Also for: Atlas 36598, Atlas 36597, 1.1 Swimming pool filters. 1.2 Astral filters. 1.3 Selection of filters and installation. 1.3.1 Filter characteristics. 1.3.2 Installation characteristics.separate pipework with their corresponding valves (3), through the pump (4) to the sand filter (5). After filtration, the water is returned to the pool via Astralpool Sandfilter Seite 5 sand filter (5). side of the pool to the skimmers and main drains. Once in the filter, the water is circulated downwards bottom and sides of the pool. This collects in the pre-filter of the pump and in the filter. The sand filter backwash expels the suctioned dirt.