1. There is no water and chemical splash arrival of control devices into the powerbox. May cause an internal loop short circuit and cause a fire, electric shock accidents;
2. If there occurs, please turn off the main power immediately after and shop maintenance personnel or to contact a sales agent;
3. Machines in the hands or face close to the machine may not be near the site. Especially in the needle bar, the hook,, to turn around the turn can be dangerous;
4. Are not removable in the machine shafts, shaft covers, you cannot remove the cover under the State power on the job;
5. The end of the job please turn off the main power (power off the machine before you turn off the main power switch).