If it is a double cycle system, first fill the cycle system with the water and test the pressure, observe whether there is water flowing out from a Tank side, and confirm that hot and cold sides of a heat exchanger are completely isolated and not connected. After the coolant is injected into the cycle system, the circulating pump starts a cycle at a low frequency and in an intermittent manner to evacuate air in the cycle system. After the air in the cycle system is evacuated and the coolant circulates stably for one to two hours, confirm whether a filter is clean. After confirming that the filter is clean, put an immersion cooling miner into Tank, and collect the excess coolant. The coolant level needs to be high enough to ensure that a liquid return port does not inhale the air.