Final answer:
The two types of evacuation methods used by technicians are deep vacuum and triple evacuation, and nitrogen sweep and standing pressure test. Deep vacuum involves removing air and moisture from a system to create a vacuum, while triple evacuation is a more thorough process. Nitrogen sweep and standing pressure test are techniques used to check for leaks in a system.
Step-by-step explanation:
The two types of evacuation methods used by technicians are deep vacuum and triple evacuation and nitrogen sweep and standing pressure test.
Deep vacuum is an evacuation method that involves removing air and moisture from a system to create a vacuum. This method is commonly used in refrigeration systems and air conditioning to prevent moisture and contaminants from affecting the performance of the system. Triple evacuation is a more thorough process that involves repeating the vacuuming process multiple times to ensure all air and moisture are removed.
Nitrogen sweep and standing pressure test are techniques used to check for leaks in a system. A nitrogen sweep involves introducing nitrogen gas into a system to pressurize it and then checking for any leaks. A standing pressure test involves pressurizing a system with a specific pressure and monitoring it over a period of time to see if the pressure drops, indicating a leak.