What is the recommended action if an ammonia system's discharge pressure indicates a higher than normal reading?

When an ammonia system shows a higher than normal discharge pressure, checking for blockages in the line is crucial. Elevated discharge pressure can result from restricted flow, and blockages can lead to inefficient system operation or even damage. By investigating potential obstructions in the discharge line, operators can identify issues such as ice formation, debris, or malfunctioning components that could be constraining the flow of refrigerant.

This proactive measure ensures the system can maintain optimal performance, supports the safe operation of the refrigeration cycle, and prevents further complications related to excessive pressure.

While there are other actions that could be considered in response to high discharge pressure, they do not directly address the underlying issue of potential blockages, which is a primary cause of abnormal pressure readings in refrigeration systems.