As we all know, home improvement hydropower acceptance is a very important part, because the hydropower project is a concealed project. Once the acceptance is completed, it is quite difficult to renovate after a problem, so hydropower acceptance cannot be sloppy. So what is the acceptance standard for home improvement hydropower? What are the precautions for home improvement hydropower acceptance? The following is a detailed explanation by everyone.
1. Acceptance standards for home improvement water and electricity
1. Water acceptance process
(1) Pressure test
a. The acceptance of water in the acceptance standard for home improvement hydropower is also a very critical link. During the acceptance, first open the water inlet valve, and then slowly fill the water from the lowest outlet of the pipeline, and then fully discharge the gas in the pipeline before tightening the pressure test pump switch.
b. Close the main water inlet valve, and then gradually increase the pressure of the pipeline. After the pressure rises to the test pressure previously defined, check the joints and plugs for leaks.
c. For steel-plastic PPR, aluminum-plastic PPR, PPR and other welded pipes, the test pressure should be maintained for more than 30 minutes; for galvanized pipes, aluminum-plastic pipes, and other non-welded pipes, the test pressure should be maintained for 4 hours. After the pressure test is completed, the pressure drop does not exceed 0.05MPa as qualified.
(2) Water pressure relief
If the pressure test is qualified, then the pipe end should be connected to the water distribution piece, and the working pressure should be used to supply water, and then the water distribution piece should be opened in batches to observe whether each water outlet is smooth.
2. Electrical acceptance process
(1) Check
The electrical acceptance in the home improvement water and electricity acceptance standard must first check whether the indoor emergency call button and intercom are normal. Then check whether the doorbell is normal, and the safety of the safety socket, including the number and safety of kitchen, bathroom, living room, bedroom and other sockets.
(2) Safety of electrical circuit switch box
According to relevant regulations, the number of circuits in each house cannot be less than 5, which is to ensure the safety of electrical circuits. The switch in the switch box should be firmly installed without looseness. And each shunt switch in the switch box must be clearly marked, if the mark is not clear or not, it must be corrected immediately.
(3) Electric pen test socket panel
Then use an electric pen to test whether the socket panel has electricity, and then check whether all sockets, switches and main electric valves in the room are normal. During the test, pull down the socket switch in the main switch box and test it frequently for several times to check whether the switch, socket and wiring are good.
(4) Pull valve power-off test
If the electric meter and the electric gate are both outdoors, the electric gate should be pulled down to check whether the indoor is completely powered off; if there is an open circuit indoors, the safety of each branch line should be checked in the same way.
(5) See if the meter is powered
Then check whether the meter is operating normally, or repair it quickly or slowly. Also, the electricity used during construction is not paid by the owner.
2. Precautions for home improvement hydropower acceptance
1. The pressure should be 1.5 times the working pressure of the pipeline system during the pressure test, and it should not be less than 0.6MPa. The pressure is not as large as possible, generally between 0.6MPa-0.8MPa, and the pressurization time is not as long as possible.
2. For the pipes in the wall and the pipes in the floor surface, it should be noted that a hydraulic test must be carried out before sealing the tank.
3. It should be noted that the pipeline should be fixed during the pressure test, and the pipe joints should be exposed, and each water outlet of the pipeline cannot be connected with water distribution equipment.
4. If the water pipe is a pipe connected by hot melt, the water pressure test should be completed within 24 hours after the pipe is installed.
Summary of the article: The above is the editor's explanation of the home improvement hydropower acceptance standards and home installation hydropower acceptance precautions. Everyone must be cautious when performing hydropower acceptance. You can refer to the above hydropower acceptance standards for acceptance, especially pay attention to the above hydropower acceptance .
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