If you are running a 2000-ton steam-driven turbine centrifugal refrigeration system and the panel indicates a water flow issue, what is the appropriate action to take?

The appropriate action to take in the scenario described is to add additional make-up water to the cooling tower. In a steam-driven turbine centrifugal refrigeration system, maintaining proper water flow is crucial for the efficient operation of the cooling process. If the panel indicates a water flow issue, it often suggests that the system is experiencing low water levels which can lead to inadequate cooling and potential overheating of the system components.

By adding make-up water, you can restore the necessary water levels in the cooling tower, ensuring that the system continues to operate effectively while avoiding potential damage from low flow conditions. This action addresses the immediate problem of insufficient water flow and helps to maintain the operational efficiency of the refrigeration system.

Addressing the flow issue through the other options could lead to further complications. Stopping the system may be warranted in more severe situations, but the first line of defense in resolving a water flow issue typically involves adjusting the water levels. Increasing the pump speed could potentially exacerbate the issue if there is insufficient water available, and checking for leaks is certainly important but does not immediately rectify the water flow situation. Thus, adding make-up water is the most directly effective and appropriate action in this scenario.