What does it mean that the pill is marked QL?

When the project is accepted, the waterway should be suppressed and the water pressure should be maintained for one hour before it can pass. Sockets should be checked one by one with a phase detector to avoid wiring errors. Several common scenarios are that the neutral line is wrongly connected or there is no grounding line, which is very dangerous in later life. In addition, it is necessary to test the leakage shielding switch to see if its action is sensitive. You can ask the professional auditors of the home improvement company to check these, or you can ask the property department to help you check them. However, you'd better be present at the inspection and make records.

Channel reconstruction is very necessary.

It should be noted that all weak current lines must be laid through pipes, and weak current pipelines and sockets should be kept at 300? Above the spacing, in order to avoid the trouble of strong electricity to weak electricity.

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Tianjin Binhai New Area High-tech Zone | Finance and Economics, Production, Real Estate, Science and Technology, New Financial Exhibition | Automobile | Digital | Tourism | Teaching | Cool Sports, 3G Shangpin | Municipal Affairs | Military | Video | Thematic Summary: Before renovation, you should consider the installation status of various weak current sockets at that time. According to people's living habits at that time, all important functional rooms (such as living room and bedroom) had better have weak current sockets. As for the building intercom system, it is best to require the property to be demolished first and put on new clothes after completion. If it can't be dismantled, it should be bandaged or maintained in advance to prevent damage during construction.

Matters needing attention in the transformation:

Hydropower construction is charged according to the actual construction lines and quantities, which is a link that is easy to cut corners in decoration. After the construction, the pipeline is covered, so it is difficult to find out and calculate the engineering quantity at present. So you'd better ask an electrician to pay off the pipeline on the wall, floor and roof before construction, and make a measurement according to the actual pay-off, so that you can check it during construction, and you can also know the amount and cost of renovation in advance to avoid wrangling after construction. At the same time, because we know the direction of the line in advance through the measurement, we can also see the problem when we look at the completed hydropower map in the future.

Houses with a service life of more than 15 years must be renovated twice. First of all, after long-term use of water supply pipes, minerals will deposit on the inner wall of the pipes, resulting in more impurities in the water and affecting the health of domestic water. Secondly, galvanized iron pipes are mostly used in houses built before 1990. Due to the oxidation of water, the pipeline will be partially rusted and infected, especially at the part where the electric wire is sheathed at the water pipe joint, which is easy to rust inside and outside, which will reduce the pressure resistance and easily lead to water leakage, cracking and even water pipe fracture. New water pipes popular after 1990, such as aluminum-plastic pipes, PP-R pipes and PE pipes, will also age and crack, which also happens from time to time in practice. In addition, the second decoration generally needs to transform functional rooms such as kitchen and bathroom. In order to uglify the environment, the former open pipe will generally be changed into a concealed pipe.

In the second renovation, weak current projects such as telephone lines, network lines and video lines must first protect household lines and socket panels, and it is best to close them in advance. Pipeline reconstruction should start from the entrance junction box, and never block the entrance line, otherwise it will be difficult to recover. After the installation of indoor weak current lines, please ask professional companies such as Netcom or property management companies to check, and professionals will connect the weak current lines of the new indoor cloth with the household junction box to ensure that there will be no problems and failures in future use. Generally, electricians in home improvement companies have low-voltage electrician operation certificates, which can forgive the construction standards of strong electricity, but weak electricity construction is unprofessional.

In order to save the decoration cost, the original circuit need not be dismantled, but it is better to wire the newly added power socket and lighting circuit separately from the distribution box, so don't bother wiring directly from the original circuit or from the socket, because the original circuit is installed according to the power load of each circuit branch, and wiring at will or adding sockets and lighting appliances to the original circuit will cause the load of a single circuit to be too large, which will easily lead to the main power switch tripping or burning out, and even cause serious problems.

1. Selection of new water pipes: generally, new plastic pipes such as PP-R and PE, stainless steel pipes and copper pipes with higher grades are used. But be careful not to use aluminum-plastic pipe, because the joint of aluminum-plastic pipe is clamped, and the gasket at the joint will age ahead of the pipe.

2. Water pipes are usually buried in the decoration, but it is best not to bury them underground.

Before decoration, consider the installation position of various weak current sockets in advance. According to people's living habits now, it is best to reserve weak current sockets in major functional rooms (such as living room and bedroom), and telephone sockets must be considered in bathrooms to facilitate future life. As for the building intercom system, it is best to ask the property department to dismantle it in advance when decorating and reinstall it after construction. If it cannot be dismantled without trial demolition, it should be bandaged or protected in advance to avoid damage during construction.

Pay attention to protection when changing weak current.

Indoor power lines, commonly known as strong electricity, mainly include lighting and socket circuits; The second transformation, the transformation of the circuit is what every family has to do. If the original residential circuit used aluminum wire, it must be replaced by plastic copper wire. Because of the low melting point and high resistance, there are hidden dangers, and the country has explicitly eliminated them. How many socket boxes should be opened before decoration to check the nozzle of the original installed wire tube. If the conduit has rusted, the original conduit can no longer be used and should be discarded. If the catheter is well preserved, the wires in the catheter can be replaced directly. If the catheter adopts standard plastic copper wire, it can still be used.

3. Because the water pipe will vibrate due to the turbulence of the air in the pipe when passing through the water, more pipe clamps should be added when installing the water pipe to ensure the long-term stability of the pipe.

In the second renovation, the transformation of water and electricity lines is a particularly important project, which will affect almost every family. Especially some old houses, if they don't change water and electricity, they have no choice but to be deformed and even prone to fire and running water. So, what should we pay attention to in such an important transformation process?

Circuit transformation: replacing high voltage with plastic copper wire.

When many old houses are renovated for the second time, it is suggested to replace the indoor main power box, because the original power box has insufficient load and no leakage protection is installed. In addition, in the old house, the original socket circuit may have no grounding wire (normally, only two-hole sockets lack grounding), which does not meet the electrical safety standards and must be replaced. One way is to replace the main power box of the house 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 yourself.