Which precaution should be taken when working with a crankcase heater?

Ensuring that the crankcase heater is always operational is crucial for the proper functioning of a refrigeration system. Crankcase heaters are designed to keep the oil in the compressor warm, preventing the oil from becoming too thick and ensuring it can circulate effectively. This helps to protect the compressor during start-up, as cold oil can lead to insufficient lubrication and potentially cause wear or damage.

When the crankcase heater is operational, it helps maintain the oil at a temperature that ensures it is fluid enough to lubricate the moving parts of the compressor upon start-up. If the heater is turned off or disabled, especially in cold environments, the oil can become too viscous, which can lead to compressor failure or operational issues. Regular inspections for overheating and monitoring functionality are also important practices, but ensuring it is operational is foundational for system reliability.