When you purchase a brand new air compressor, it is important to familiarize yourself with how to operate and start your new equipment. There are several compressor parts that are used to start an air compressor. To start up your air compressor, you should first make sure that the switch is off. Next, you can turn the regulator knob. Once this knob has been turned, you will be ready to turn the switch on and start using your air compressor. A company selling air compressors near San Jose can provide you with tips and tricks on how to use your air compressor. To take a look at the steps of starting an air compressor, check out this video from expertvillage.