Safety of electric heating thermal oil furnace

Safety of Electric Heated Thermal Oil Boilers

① Ensure the system is properly filled and vented according to the operating procedures. Use the filling pump to pump the required amount of thermal oil into the oil reservoir and throughout the system. Once filled, supply the system. Open the cold oil displacement valve to vent the oil and then close it. When the oil is fully filled and enters the expansion tank, and the oil level rises above the overflow port and returns to the oil reservoir, close the filling pump and the inlet and outlet valves.

② After venting the cold cycle, dehydrate and vent the system using a step-by-step heating method to further remove any remaining air, moisture, and low-boiling-point vapors. Increase the temperature at a rate of 20°C per hour for 5-6 hours. If no abnormalities are observed, return the temperature to the operating temperature and resume normal operation.

③ During heating and normal operation, carefully check the entire system for leaks. Because porous insulation materials tend to absorb thermal oil, thorough inspection of each section is essential. Strictly prevent any leaks to ensure safety. Never underestimate the importance of carelessness. ④ During normal heating operation, maintain a constant flow rate for the thermal oil. Do not reduce the flow rate to adjust the overall heating supply. Open the bypass valve when appropriate to lower the furnace temperature and adjust the heating supply. If heating is terminated or the furnace needs to be shut down due to special circumstances, allow the furnace temperature to drop before shutting down the pump and stopping circulation. To expedite cooling, cold oil from the oil storage tank can be introduced into the system to replace the hot oil.

For the safety of electric thermal oil boilers, the oil level in the expansion tank should be above the low alarm level during operation and should be increased as much as possible. If the oil level is too low, it must be replenished promptly. In the event of a power outage, immediately open the cold oil replacement valve and close the heater inlet valve to allow cold oil to flow into the furnace to cool it down, preventing overheating and shortening its service life.