How long does it take to rebuild the second-hand house hydropower? What problems should we pay attention to?

Many people buy second-hand houses and decorate them according to the situation, and hydropower transformation is the most important one. Generally speaking, how long does it take to decorate a second-hand house? What should we pay attention to before the transition? Is it necessary to do closed water test after reconstruction? Today we will talk about the decoration of second-hand houses.

1. How long does it take to rebuild the second-hand house?

Hydropower transformation usually takes about a week. Of course, there is no need to worry during the decoration process, because these concealed works are very important, especially the water and electricity decoration, which should be paid attention to not only during the installation process, but also in the waterproof test after the decoration.

1, go through the work permit with the community.

Before the renovation of the second-hand housing waterway, the commencement certificate should be issued to the community. When applying, you should bring a waterway reconstruction plan and wait for the approval of the residential property. After completion, the property management office needs to go to the site for acceptance.

2. Material transformation of water pipeline

As mentioned above, in houses with long service life, more scale will form on the inner wall of water pipes, which will affect the health of family members; Furthermore, galvanized iron pipes were mostly used in houses and were oxidized by water for a long time. After the pipeline is corroded, its compressive capacity decreases, which is easy to cause leakage or even fracture. Therefore, the second-hand house should choose whether to replace the water pipe according to the material and service life of the water pipe.

3, closed water test is indispensable.

Before the renovation of the second-hand house waterway, it is suggested that the space should be closed for water test first, and then the relevant property should be accepted. If you find water leakage, you can find a property to solve it. In order to avoid leakage after transformation, the responsibility is not clear.

4. Water pipe hydrostatic test

After the second-hand house water pipes are installed, pressure test should be carried out on the hot and cold water pipes, generally 6-8kg is appropriate, and the pressure test should be no less than 0.6MPa for 20-30 minutes. If the pressure does not leak and the air pressure does not drop, it is considered qualified.

Second, what problems should we pay attention to?

1, asking about the service life of the house.

For commercial housing that has been used for ten years, there is little difference between the strong and weak electricity of most houses and new houses, and the circuit transformation should be mainly based on local changes; For the second-hand house that has been used for 20 years, the circuit transformation mainly needs to optimize and adjust the original high-voltage system; For second-hand houses that have been used for more than 20 years, the circuit transformation generally needs to remove the original wires for thorough rectification.

2, check the original wire tube

Before the second-hand house circuit is reformed, it is necessary to check the quality of the original conduit. If the catheter has been damaged, the original catheter cannot be used. If the catheter is well preserved, the wires in the catheter can be replaced directly. This can save the cost of wire and tube.

3. Newly added sockets and circuits should be wired separately.

If there is no problem with the quality of the original circuit, then we can not dismantle it, but add some lines and switch sockets on this basis to meet the needs of the owners. However, it should be noted that the newly added power sockets and other circuits should be wired separately from the distribution box and cannot be connected at will. Avoid adding sockets and lamps to the original circuit, so as to avoid overloading a single circuit and causing tripping or even fire.

4. Grounding protection of the line.

The original socket circuit of the old second-hand house may not have a grounding wire, but generally there are only two holes, which do not meet the safety standards for power distribution and must be replaced. One method is to replace the main power box and set the grounding in the power box; Another way is to consult the electricity management personnel of the property about the installation location and connection mode of the grounding wire, and never set the grounding wire privately.

It can be seen that the renovation time of second-hand houses is generally about one week, but the specific renovation time depends on the actual situation, either less than one week or more than one week. At the same time, many matters need to be paid attention to in the process of hydropower transformation, such as closed water test.