[Students' questions] Quality problems that should be paid attention to in the installation of lamps and ceiling fans?
[Answer] (1) The center line deviation of the row of lamps and ceiling fans is out of the allowable range: When determining the position of the rows of lamps and ceiling fans, the line must be pulled, preferably the cross line is drawn.
(2) The wooden table is not firmly fixed, and there is a gap with the surface of the building: when the diameter of the wooden table is 75-150 mm, two screws are used for fixing; when the diameter of the wooden table is 150 mm or more, three screws are used to fix the triangle.
(3) The flange, the hanging box and the flat lamp socket are not on the center of the plastic (wood) table, and the deviation is more than 1.5mm: the center of the flange, the hanging box and the flat lamp should be aligned before installation ( Wood) the center of the station.
(4) If the hoisting chain of the hang-chain fluorescent lamp is improperly selected, the belt cover or double-tube fluorescent lamp and the single-tube unshielded fluorescent lamp chain length should be replaced according to the following requirements. A galvanized sling should be used.
(5) When the wooden structure is fixed (dark), the wire joint and the ordinary plastic wire are exposed, fireproof measures should be taken, the wire joint should be placed in the lamp box or inside the appliance, and the plastic wire should be laid with the sheath wire. Or put it in a flame-retardant plastic cable trough for clear wiring.
(6) For the applicable places and installation methods of various types of lamps, refer to the installation diagrams and instructions provided by the manufacturer. Install it. Which type of luminaire is not directly mounted on the structure using a wooden pedestal should be determined by design. For metal enclosure luminaires installed in the grounding range, the luminaire shall be provided with special grounding bolts on the body.
The above contents are compiled according to the problems encountered by the students in the actual work, for reference, if there is any problem, please communicate and correct in time.
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Label: Quality problems that should be paid attention to in the installation of lamps and ceiling fans
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