How to change sand in Hayward S-200 Sand filter

Hayward S-180 filter takes 150lbs, S-210 takes 200lbs not familur with the S-200. To change sand you have to remove the vari flow valve on top. You can either unplumb the filter and roll it over on its side and try washing the sand out or try scooping it out upright. Whatever you do dont damage the laterals on the bottom of the filter. When refilling with sand you want to make sure all the laterals are undamaged and in the down position. I always fill the filter half full of water to keep the sand from damaging the laterals while re-filling the filter with sand. Make sure you use pool filter sand and not play sand!

Here is a link for your filter it explains how to add sand to a new filter. Im new to this too i have seen people say to use a shopvac instead of turning it on its side to prevent damage to the laterals http://www.haywardnet.com/products/Manuals/pdfs/manual23.pdf