Reasonable control of the water temperature of the Cat excavator is essential when it is operational.Normally, the cooling system of the Cat excavator should ensure a steady water temperature between 80 and 95 degrees, which is the temperature range where the engine works most efficiently and effectively to avoid overheating.When the water temperature reaches about 60 degrees, the pump in the cooling system will start a full cycle for preheat protection, and when it approaches 95 degrees, the fan will automatically turn on to reduce the water temperature and prevent excessiveness from causing machine performance to decline or even damage.So, technically, the answer to the question of how much water the Cat excavator has turned on the fan is about 95 degrees.Operators need to keep a close eye on the excavator's dashboard to ensure that the water temperature remains within the appropriate range.For the day-to-day maintenance of the Cat excavator, regular inspection of the condition and water temperature of the coolant is a critical link that not only prolongs the life of the equipment, but also ensures the safety and efficiency of the construction process.