The common quality problems in circuit reconstruction are mainly the defects of sparks and malfunctions caused by unqualified materials and electrical products. The solution to this type of problem is to replace the qualified product. Otherwise, even if there is no quality problem, it will take a long time to use it. In particular, the use of electrical products requires high safety, so you must use qualified products. product.
Common quality problems and treatment methods of sewage pipe renovation project
The main quality problems of pipeline reformation are reflected in the defects of the quality of the tethering and installation quality defects. The main quality defects of the set yarn are thread misalignment, missing threads, and disordered filaments.
The main reason for thread misalignment is that the thread clamps are not clamped. When the manual threading is performed, the uneven force of the arms and the sawing of the end of the pipe section are not correct. When threading, it is necessary to fix the threading plate and the pipe section according to the specifications, and the force should be uniform during operation. The threading plate must not be pushed. Before pipe threading, check whether the pipe section port is flat or not. The main reason for broken threads is due to the large amount of die feeding or the bad quality of the die teeth during threading. In the threading operation, the amount of one feed can not be too large, generally should be divided into two sets of wire, pipe diameter over 25 mm pipe threading should be not less than three times, when the wire should be cleaned in time to remove the iron slag to prevent Accumulation. When the dies are not sharp or damaged, the number of threadings should be increased. The main reasons for the disorder filaments are the wrong sequence of the die, the large gap between the die and the misalignment of the secondary thread. In operation, it is necessary to operate strictly in accordance with the requirements of the operation specification. The traces of the two laying wires must be coincident.
The installation quality defects are mainly pipeline leakage and pipeline blockage. The main reason for pipeline leakage is that the quality of the installation interface is not up to standard. If it is too loose, do not use the filling material to remedy the situation. You must cut off the end and re-tighten, if it is twine or tape Too little, can be removed and re-wound after installation. When operating, operate strictly according to the specification.
Pipe plugging is mainly caused by debris in the lumen and linsee falling into the lumen during installation. When installing, all contamination in the lumen must be cleaned before installation. The cleaning method can be washed with water and rinsed. The flow rate should be greater than 1.5m/s, until the dirt flushed, the installation should be wrapped in hemp or tape on the thread, especially hemp, must not protrude the thread, and strictly in accordance with the direction of thread winding.
Grille ceiling
The common quality defects of wooden grille ceilings are uneven grid grids or irregularities, uneven surfaces, collapse, and arching. The grid is uneven or not square, mainly due to the fact that the foundation walls are not square or the vertical and horizontal grille openings are not vertical. Therefore, before installing the wooden grille skeleton, deal with the foundation wall to find the square, first use the ruler to measure the angle and the angle of each side, if the error is not large, you can use the putty to shave the wall to find the square, if the error is large, You should first pad the board and then level it with putty. When splicing vertically and horizontally, the keel grid must be vertical. Otherwise, it should be repaired and installed.
The main reason for the unevenness, collapse, and arching is due to the fact that, in addition to lax sticks during construction, wood deformation, too thick frosted glass, and heavy lighting fixtures are also important reasons. Therefore, in the construction should choose not easily deformed pine wood frame, frosted glass with a thickness of 3 mm is appropriate, lighting can be installed on the ceiling or choose light materials to prevent the ceiling load is too heavy. If there is arching, the hanging parts can be adjusted so that the top surface is flat.
Common kitchen equipment installation quality problems and treatment methods
The main quality defects in the installation of kitchen equipment are that the connection to the grass roots is not strong, the installation of kitchen utensils is uneven, and the gap at the junction with the pipeline is too large.
1 The connection with the grassroots layer is not firm: The main reason is due to the improper selection of connecting pieces. If the base layer is wood and gypsum board, wooden screws should be selected as the connecting piece. If the base material is cement, the expansion bolt or plastic expansion pin should be used. The base layer is For brick walls, plastic expansion pins or embedded wood blocks should be used.
2 The installation of kitchen utensils is not stable: In addition to the uneven ground on the ground floor, the bottom knob of the kitchen utensils is not adjusted. Therefore, the installation of the kitchen utensils should be performed after the kitchen floor is finished. When installing, the knob should be adjusted first to ensure that the cabinet body can be fixed after being horizontal.
3 Oversized joints with pipelines: The main reason is that the measurements are not accurate during installation. When installing, it is necessary to measure the size and then strike the wire on the cabinet, and then verify the size and position before cutting.
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