A pneumatic foot lifter for a sewing machine is a device that uses air pressure to lift the presser foot of the sewing machine. This can be useful for a variety of reasons, such as when the operator needs to remove fabric from the machine or when the operator needs to change the presser foot. To set up a pneumatic foot lifter for a sewing machine, the following steps should be followed:
1. Turn off the sewing machine and unplug it from the power outlet.