Precautions when servicing explosion-proof motors

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. Finally, remove the rotor. Remove the 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 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. Finally, remove the rotor. Remove the 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.

4. If the explosion-proof surface is damaged, it is necessary to use lead-tin solder HISnPb58-2, the flux is 30% hydrochloric acid (for steel parts) or tin-zinc solder containing 58~60% tin, the flux is ammonium chloride 30%, chlorine 70% zinc, 100~150% mixed solution (for cast iron parts) is welded, 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 rust preventive oil on the explosion-proof surface.

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