1. Prepare the compressor and water;
2. Remove the short linker on the heat exchanger pipes;
3. Use wrench or socket wrench unscrew the heat exchanger head fastening bolts, the head rotates 180 degrees, the heat transfer tube is exposed;
4. The heat transfer tubes inserted nylon brush, nylon brush up on the gas block full access;
5. The gas gun inserted in the mouth of the heat transfer tube, horizontal hold air gun, air gun on the sealing gasket compression;
6. Unscrew the valve on the air gun, compressed air that is pushing forward a nylon brush, nylon brush when the heat transfer from the other end of the tube comes out, close the valve;
7. From the other end of the heat exchanger will be nylon brush pushed back repeatedly shave brush three times;
8. Use a pressure of 0.3MPa water rinse heat transfer tubes;
9. a heat exchange tube, repeat the above three steps until all the heat transfer tubes Cheongju complete wash;
10. Check the color of the heat transfer tube, such as the exposed copper color, the Qing wash qualified;
11. The head cycle, check the head gasket is smooth and tighten the heat exchanger with a wrench or socket wrench head fastening bolt tightening torque should be consistent with the use of manual or maintenance manual requirements;
12. Connect a short linker on the heat exchanger pipes;
13. Qing Li scene.