Maintenance of lighting SPDUs is important for safety and equipment longevity. First, regularly check the outside and inside of the SPDU to make sure no dust, moisture or foreign matter has entered. Keep the area around the SPDU clean and avoid accumulation of debris. Secondly, regularly check wires and terminals for looseness or rust to ensure good connections to avoid circuit failure or fire risk. In addition, pay attention to check the working status of fuses and circuit breakers, and replace aging or damaged parts in time. During use, avoid overloading and ensure that the SPDU operates within a safe load range. If any abnormalities or problems are found, they should be immediately inspected and maintained by a professional electrician to ensure the long-term stable operation and safe use of the lighting SPDU.