Converting a refrigeration compressor to an air compressor pump can be done with some modifications, but it's important to note that it might not always be safe or efficient. Refrigeration compressors and air compressors are designed for different purposes and operating conditions, so the converted air compressor may not perform as well as a dedicated air compressor.
Here are the general steps to convert a refrigeration compressor to an air compressor pump:
Safety First: Before attempting any modifications, ensure the compressor is disconnected from the power source to avoid any electrical accidents.
Select the Compressor: Choose a suitable refrigeration compressor for the conversion. Ideally, a reciprocating piston type compressor is better suited for this purpose.
Remove Refrigerant: If the compressor still contains refrigerant, it must be safely evacuated and recovered according to the local regulations and laws for handling refrigerants.
Disassemble the Compressor: Take apart the compressor to access its internal components, including the pistons, cylinder(s), and valves.
Modify Valves and Cylinder Heads: The valves and cylinder heads of a refrigeration compressor are designed for low-pressure refrigerant gases. To use the compressor for air compression, you may need to modify or replace these components with ones suitable for higher-pressure air.
Lubrication: Refrigeration compressors typically have internal lubrication systems for the refrigerant, which may not be compatible with air. You might need to modify or add a separate lubrication system for the air compressor function.
Pressure Relief Valve: Ensure that the compressor has a pressure relief valve installed to prevent over-pressurization, which can be dangerous.
Air Intake and Outlet: Modify the air intake and outlet connections to match the size and type needed for your intended air compressor use.
Reassembly: Put the modified compressor back together carefully, ensuring all the modifications are correctly implemented.
Testing: Once the conversion is complete, test the compressor to check its performance, safety, and efficiency. Be cautious during the initial testing to avoid potential issues.
While it is possible to convert a refrigeration compressor to an air compressor, it's essential to understand that the converted compressor may not be as reliable or efficient as a purpose-built air compressor. Air compressors are designed to handle higher pressures and continuous operation, which may not be the case for a refrigeration compressor. If you require an air compressor for serious applications or regular use, it's recommended to invest in a dedicated air compressor designed for that purpose.