Talk about daily maintenance of your own explosion-proof lighting
February 24 05:06:27, 2024
I have a friend who car is very new. I thought he had just bought it. Later he said that he had bought it for almost four years. At first sight, he always loved it. The lamp and the car are actually the same. They usually pay more attention to maintenance and they are more durable.
Now to teach everyone how to carry out explosion-proof lighting maintenance and overhaul
Explosion-proof luminaires must be checked before installation: explosion-proof type, category, level, group, degree of protection of the enclosure, installation method and fastener requirements for installation. The installation of explosion-proof lighting fixtures should be ensured, the fastening bolts should not be replaced at will, and the spring washers should be complete. Dust-proof, waterproof seals should be placed as they are. When the cable enters the line, the cable and the sealing gasket should be closely matched. The section of the cable should be round, and the surface of the jacket should not have defects such as asperities. Extra inlets shall be sealed in accordance with the type of explosion protection, and tighten the compression nut to seal the inlet. Â
In routine maintenance, the following points need to be noted:
Explosion-proof lamps and lampshades should be able to automatically cut off the power before they are opened. However, due to the complexity of the installation of the interlocking device, it is not easy to implement, so most of the lamps and lanterns are marked with a warning sign that prohibits electrification and opening. Because the surface temperature of the bulb after power off is still high, if you open the lampshade immediately, there is still the danger of igniting the explosive gas mixture (mainly flameproof structure). Therefore, incandescent lamps, high-pressure mercury lamps, and high-pressure sodium lamps have high surface temperatures. , but also quickly open the lid of the luminaire to pay attention to this. CeY-1 explosion-proof fluorescent lamp explosion-proof fluorescent lamp has an opening and closing power interlock mechanism, which provides convenience and safety protection for maintenance work. Because the fluorescent lamp is a cold light source lamp, there is no surface high temperature, and the lid can be opened immediately after the power is turned off.
When replacing bulbs (tubes), the flameproof joints of explosion-proof lamps shall be properly protected and shall not be damaged; the flameproof faces after cleaning shall be coated with phosphated plaster or 204-1 anti-rust oil; other paints shall be prohibited from painting; There shall be no rust layer on the surface. If there is slight rust, there shall be no numbness after cleaning. The seals used for dust protection and waterproofing must be kept intact. This is very important for the increased safety lighting. If the seal is seriously damaged, replace it with a seal of the same size and material and replace the entire light if necessary. When overhauling, pay attention to whether the lampshade is in good condition, and if it is broken, it needs to be replaced immediately.
Portable luminaires are divided into two types: feed-grid-powered and self-powered. For lamps powered by the feed-in network, rubber-sleeved cables shall be used between the explosion-proof junction boxes (boxes) or explosion-proof plugs and the lamps. The grounding or connection of the neutral conductor shall be within the same sheath; the cable shall adopt the minimum allowable section of the main conductor core. 25 mm2 YC, YCW heavy duty rubber cable.
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