Before installation of explosion-proof lamps, check the following: explosion-proof type, category, grade, and protection grade of enclosure; Installation method and fastener requirements for installation. The installation of explosion-proof lamps shall be firmly fixed, the fastening bolts shall not be replaced arbitrarily, and the spring washers shall be complete. The sealing ring for dust prevention and waterproof shall be placed as it is during installation. At the cable inlet, the cable and the sealing gasket shall be closely matched. The cross-section of the cable shall be round, and the sheath surface shall be free of concave and convex defects. The excess inlet shall be blocked according to the explosion-proof type, and the compression nut shall be tightened to seal the inlet.
Cut off the power supply before opening the explosion-proof lamps and Lampshades. Warning boards with words such as "do not open with power" shall be set at obvious places of the shell. The surface temperature of some light sources is relatively high, which should be paid attention to when the cover is quickly opened. The explosion-proof fluorescent lamp has a cover opening and power-off interlock mechanism, which provides convenience and safety for maintenance. Since the fluorescent lamp is a cold light source lamp, there is no high temperature on the surface, and the cover can be opened immediately after power failure.
When replacing the light source, the flameproof joint surface of the explosion-proof lamp shall be properly protected from damage; The cleaned flameproof surface shall be coated with phosphating paste or 204-1 anti rust oil, and other paints are prohibited; There shall be no rust layer on the flameproof surface. If there is slight rust, there shall be no pitting after cleaning. The sealing ring used for dust prevention and waterproof must be in good condition, which is very important for the increased safety lamps. If the sealing ring is seriously damaged, replace it with a sealing ring of the same specification and material. If necessary, replace the whole lamp. Pay attention to whether the lamp cover is in good condition during maintenance, and replace it immediately if it is broken.
Portable lamps are divided into two types: power supply from power feed grid and self-contained power supply. For lamps powered by power feed grid, rubber sheathed cables shall be used from explosion-proof junction box (box) or explosion-proof plug * * * lamps, and their grounding or neutral cores shall be in the same sheath; YC and YCW heavy-duty rubber sheathed cables with a small allowable cross-section of 25 mm2 for the main core shall be used. Here, I want to stress one point: the cable of portable lamps is not allowed to have intermediate joints.
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