There are a few things you can check to make sure your compressor is working properly. First, check the pressure gauge to see if it's reading in the normal range. Next, listen for any strange noises coming from the compressor. If you hear anything that sounds like banging or clicking, then there may be something wrong with the unit. Finally, check the air output to make sure it's strong and consistent. If you notice any of these problems, consult your compressor's manual or contact a qualified technician for help.