What does the low water cutoff (LWCO) protect during a low water event in a condensate receiver?

The low water cutoff (LWCO) serves a critical function in protecting the condensate pump from potential damage during a low water event. When water levels drop below a certain point, the LWCO activates, shutting off the pump to prevent it from running dry. Operating a pump without sufficient fluid can lead to overheating and mechanical failure, which is why the LWCO is vital for ensuring the safe and reliable operation of the condensate system.

The LWCO's primary role focuses on the protection of the pump itself, which handles the transfer of condensate back to the boiler system. By ensuring that the condensate pump only operates when there is enough water, the LWCO contributes to the longevity and efficiency of the entire system.

The other choices pertain to different aspects of the steam system but are not directly protected by the LWCO during low water conditions. For instance, while system pressure and water feeders are important, the LWCO's specific intent is to ensure the safe operation of the pump in the event of low water levels.