1. Equipment Operation Time and Age
The design service life of explosion-proof cameras is typically 5-10 years. If the device is nearing or exceeding its design life, or is operating under high load for extended periods (such as 24/7 monitoring), extensive maintenance or replacement may be necessary. New regulations in 2025 require mandatory scrapping of devices that have reached their design life or do not meet performance standards.
2. Environmental Adaptability Inspection
Corrosion and Sealing: If the device is exposed to high humidity, dust, or corrosive gases for extended periods, check the explosion-proof housing and seals for signs of aging or damage. For example, oily or deformed rubber seals can degrade the explosion-proof performance.
Temperature and Heat Dissipation: High summer temperatures can easily cause the device to overheat. Check the cooling system to ensure proper functioning to prevent malfunctions caused by overheating. 3. Malfunctions
Degraded image quality: If the image is blurry, the signal is attenuated (the composite video level is below 800mV or above 1000mV), or there are frequent frame drops, the lens may need to be cleaned or the sensor replaced.
Control malfunction: If the pan/tilt stops moving, the camera cannot focus, or communication is lost, check the wiring connections and motor status.
4. Regular Inspection Results
According to the "AQ3009-2017" standard, explosion-proof equipment must undergo professional inspection every three years. If the following issues are discovered during the inspection, immediate in-depth maintenance is required:
Impaired explosion-proof structural integrity (e.g., excessive joint clearance);
Aging or short-circuit risk of wiring insulation;
Ground resistance greater than 1 ohm, affecting lightning protection performance.
5. Maintenance Records and Fault History
If the equipment experiences the same type of fault multiple times in a short period of time (e.g., a damaged power module, frequent restarts), or if maintenance records indicate that key components (e.g., explosion-proof glass, gaskets) have been replaced multiple times, a comprehensive inspection is required. 6. Advanced Maintenance Recommendations
Professional Inspection: Entrust a CMA-certified organization to test explosion-proof performance according to standards such as GB/T3836.
Component Replacement: Prioritize replacement of wearing parts (such as seals and power modules), ensuring that new parts meet the original manufacturer's explosion-proof rating.
Environmental Optimization: Install a dehumidifier in high-humidity areas or adjust the equipment's installation location to improve heat dissipation.
