What is the most probable cause of noise in a compressor after repairing a leak in the liquid line?

When a leak in the liquid line is repaired, one significant factor to monitor is the oil levels in the system. If the compressor operates with low oil, it can lead to insufficient lubrication, which increases wear on the compressor components. This situation often results in unusual noises such as knocking or grinding, as the moving parts are not adequately lubricated.

After repairing a leak, it is vital to check and confirm that the system has the proper amount of oil. If the oil level is low, it can create excess friction and heat, exacerbating the noise issue and potentially leading to compressor failure. This underlines the importance of ensuring that all aspects of the system are balanced and maintained post-repair, particularly in terms of lubrication and overall functionality.