Basically, a higher GPM will mean that it will be able to cover more surface area in less time. 3 GPM will be able to clean 8 to 10 square feet of area per minute. Most pressure washers are already equipped with accessories. However, if it is not, you might want to consider buying the accessories yourself. Then, start the pressure washer and test the spray. Do this with the nozzle facing away from the object or surface you want to clean. The, slowly point the wand towards the object or surface to start cleaning it. These are some of the few techniques that you have to learn when using pressure washers. Although the hose is designed to withstand high pressure, subjecting it to high pressure for prolonged periods of time will eventually break it. You should then purge excess water from the pump. For gas models, you need to pull the start rope 4 to 5 times. For electric models, you need to flip the switch on and off for a few seconds. So, here are some of the safety precautions that you need to take whenever you operate a pressure washer. By keeping these safety precautions in mind, you can be sure that you will be able to avoid damaging properties or getting you or other people injured by it. Before you operate the machine, make sure that you check everything in the machine. Pressure Washers: Uses and How This Device Can Benefit You First of all, pressure washer is a cleaner that uses high pressure to clean and remove stains, dirt, dust, mud, and even mould on surfaces. It can be used to clean walls, floors, and even vehicles. In this device, the jet uses pressure in a closed box to clean dirty parts. The windshields as well as the glass parts are hard but they are also brittle. The metal body of the vehicle is also hard and sturdy but if you use too much pressure, the paint can be damaged. This is why you have to get a special type of pressure washer when you plan on using it for auto detailing. It should be able to clean all types of surfaces on a vehicle without causing damage.