Using a refrigerator's compressor as an air compressor outside of the refrigerator is not recommended and can be dangerous. There are several reasons for this:
Refrigerant Gas: Refrigerators use refrigerant gas (such as Freon or other hydrofluorocarbons) to cool the inside. This gas is not suitable for use in an air compressor and can be harmful to the environment if released. If the refrigerant gas leaks or is released into the atmosphere, it can contribute to ozone depletion and global warming.
Design and Pressure: Refrigerators are designed to handle specific pressure levels and temperatures for cooling purposes. Using the compressor for other purposes, like as an air compressor, can exceed the designed pressure limits and potentially cause the compressor to fail, leak, or even rupture, leading to hazardous situations.
Oil Lubrication: Compressors in refrigerators are lubricated with special oils designed for their cooling function. Using the compressor for other applications might not provide sufficient lubrication, leading to premature wear and damage.
Safety: Repurposing a refrigerator compressor for uses other than its intended purpose can be hazardous. It may not have the necessary safety features or protection to operate as an air compressor, which could lead to accidents or injuries.
If you need an air compressor for various tasks, it's best to invest in a proper air compressor designed for that purpose. They are readily available and come in various sizes and power capacities to suit different needs. Using a refrigerator's compressor for anything other than its intended purpose is not only unsafe but can also damage the appliance and be detrimental to the environment.