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What should be paid attention to when repairing explosion-proof electrical equipment?
1. Explosion-proof motor shall not be dismantled at will; when dismantling and repairing, the explosion-proof surface of the part shall not be used as the fulcrum of the crowbar, and it is not allowed to hit or impact the explosion-proof surface.
2. When disassembling the motor, first remove the hood and fan, then use the casing wrench to remove the bolts of the end cover and the bearing cover, and then use the log or copper rod to axially impact the shaft extension to separate the end cover from the base. After the Zui, remove the rotor. Remove parts, the explosion-proof surface should be placed upside down, and covered with rubber or cloth pad, fastening bolts, spring pads, etc., do not lose.
3. When dipping paint and assembly, the insulating paint or dirt attached to the explosion-proof surface should be cleaned. Do not use hard objects such as iron sheets to scratch, but you can use oil stone to grind uneven places.
4. If the surface of the explosion-proof electrical appliance is damaged, the lead-tin solder HISnPb58-2 must be used. The flux is 30% hydrochloric acid (for steel parts) or tin-zinc solder containing 58-60% tin. The flux is 30% ammonium chloride. 70% zinc chloride, 100~150% mixed solution of water (for cast iron parts), the combination of solder and parts should be firm, and the convex part should be smoothed to achieve the specified finish.
5. To prevent rust on the explosion-proof surface, apply oil or 204-1 displacement anti-rust oil on the explosion-proof surface.