Maintenance method of air heater

(1) During the overhaul or minor repair of the unit, the water side should be cleaned and the air side should be visually inspected. Generally, during operation, if the air temperature is 5°C higher than the normal temperature due to blockage on the water side, cleaning is necessary.

　　(2) Cleaning and inspection during gun repair

1、 Disassemble the flange screws of the circulating water inlet and outlet valves, and remove the connecting pipes of the inlet and outlet valves.

2、Remove the front and rear water chamber joint surface screws, and remove the front and rear water chambers.

3 、Clean the steel pipe. Take care to protect the nozzle when cleaning.

4 、Clean the rust and mud in the water chamber and rinse with water.

5、Use a scraper to repair the joint surface of the wiper room and the residue on the flange gasket of the cooling water inlet and outlet.

6、 Check the air side pipe and heat sink for damage.

7 、Check whether there are cracks in the water chamber and whether the partitions are damaged.

8、 Install the joint surface gasket. The gasket adopts 3-5mm like rubber gasket.

9、 Brush the bolts with kerosene, and apply black lead powder oil after drying.

10、 Coat the inside of the water chamber and the inlet and outlet pipe plates with red lead anti-rust paint.

11 、Check that the air cooler tube bundle and the joints with the four walls should be tight and airtight.