(1) insert the electric soldering iron plug into the specified socket 3-5 minutes before going to work every day, and check whether the soldering iron is hot. If it is not hot, check whether the socket is inserted well first. If not, report to the administrator immediately.

(2) the soldering head which has been oxidized and uneven or with hooks should be updated: 1. Good heat conduction effect can be guaranteed; 2.2. Ensure the quality of the welded parts.If the new soldering iron mouth, after the heat should be removed maintenance paint, immediately add tin maintenance.Cleaning of soldering iron should be done before soldering operation. If no soldering iron is used for more than 5 minutes, power should be turned off.Sponges should be cleaned thoroughly with metal particles in the sponge, or sulfur-containing sponge will damage the soldering iron head.

(3) check whether the tin sponge has water and is clean. If there is no water, please add some water. The sponge should be cleaned.