The power switch of the ammonia refrigeration machine room should be arranged near the outer door. I

1. Inspection: Before completely replacing the antifreeze, it is necessary to do a comprehensive inspection to see if there are traces of false leakage in the pipes, whether there are cracks, the key is to check the five water pipes, the five pipes are named because there are five interfaces connecting various parts, and the antifreeze is distributed to different parts of the car after flowing through the five pipes. If there is a leak of antifreeze in this section, the water pipe should be replaced or the connection should be re-fixed according to the situation.

2. Drain water: release the old antifreeze, and then clean the liquid channel with clean water. Clean water is added to the antifreeze refill tank, which is then filled with clean water to continuously flow through the engine cooling system, and then idling for 3 to 5 minutes to circulate the water.

The water that starts to flow out of the pitcher is a little pink, and continue to pour in clean water until the water that comes out is clean. Don't forget to remove the warm air water pipe and drain the water from the warm air tank.

3. Replacement liquid: After about 1 hour of draining the water, add the new antifreeze through the water pipe of the water tank (radiator), which is the method of letting the antifreeze flow into the water tank quickly. Then add another bucket of antifreeze to the antifreeze tank, add it until the antifreeze tank is almost full, and drive for about 10 minutes, at this time, the cooling system has removed part of the air, and the liquid level has dropped, and then add the antifreeze to fill the highest mark of the storage tank "MAXT".