What is the first step to take when a newly assembled system is ready for testing?

When a newly assembled system is ready for testing, the first essential step is to pressurize it with an inert gas and conduct a leak check. This process is critical to ensure that there are no leaks in the system before putting it under operational conditions.

Using an inert gas, such as nitrogen, allows technicians to safely pressurize and test for leaks without the risks associated with refrigerants, which can be hazardous and are often subject to strict regulations. A thorough leak check helps ensure the integrity of the system, preventing refrigerant loss and potential damage during operation. Addressing leaks before filling the system with refrigerant is vital because any leaks would lead to system inefficiency, environmental harm, and possibly unsafe conditions.

Checking electrical connections and evacuating the system are also important but come after confirming the system is leak-free. Filling the system with refrigerant is a later step that follows successful leak testing and system evacuation. Initiating with leak testing sets the foundational integrity of the system, ensuring that all subsequent steps can be carried out safely and effectively.