166 36-39 CFM (17.8-18.2 l/s) 21 CFM (10 l/s) 53-137 CFM (25,0 - 64,7 l/s) 150 - 271 CFM (70,8 - 127,9 l/s) The 10 things you should consider when buying a compressor When you consider buying a compressor , the of fer is wide and can appear quite complex. h ere are 10 basic rules to help you fnding the compressor that suits your needs. 1. Determine your type of use: DI y , professional or industrial y ou just occasionally fx small things at home? Or you rather need continuous air fow to keep dif ferent applications ruling in your factory? 2. Defne the tools you will work with to defne the total Free Air Delivery requirements (FAD). FAD is often expressed in CFM (cubic feet per meter) or l/m (liter per minute) Blowing up your mountain bike tires requires much less air fow and pressure than working with a professional spray gun. T o select the right compressor , you need to know the total CFM of all your individual air applications. Add an additional margin of 25% to cover ineffciencies in your network and future growth. F AD is the most important selection criterium. required CFM = (CFM tool 1+ CFM tool 2 + CFM tool n) + 25% of total CFM 3. Defne your frequency of use: occasional – intermittent – frequent Piston compressor technology is suitable for many occasional and intermittent users. Frequent users will beneft from cast iron piston and screw compressor technology . 4. Defne the spacing requirements of your machine: fxed, moveable, remote device and horizontal or vertical vessel For easy moving around your compressor , look for comfortable handles and wheels. For remote service, consider an engine driven compresso r . Always on the same spot? Go for comfort vibration dampers and a wide stab le base. If you have reduced workspace, consider a vertical vessel.