1. Before the equipment is installed, it is necessary to conduct a comprehensive inspection of all the lines of the system, whether there is a disconnection or a short circuit;
2. After confirming that there is no fault in the line of the entire system, the equipment can be installed. Solder must be added to the contacts of the wiring.
3, the installation of equipment must be in strict accordance with the instructions attached to the product or installation manual for correct wiring.
Second, the system before power debugging
1. After the equipment is fully installed, it must be fully checked whether the wiring of each part is correct; if there is a wrong connection, the whole system may not work properly.
2. Check if the power cord is connected incorrectly, and if there is a short circuit between the positive and negative poles, otherwise the device will burn out the equipment and its related circuit equipment, which will cause serious fire.
Third, the unit building intercom and visual part of the debugging
1. Under the condition that the line and wiring are correct and the equipment is in good condition, the unit system can work normally after being powered on.
2. In the debugging of the unit building, first connect all the wirings of the host computer and the lowest layer protector/decoder and indoor unit, and at the same time, number the extension's room number according to the instructions for use; Confirm whether the door host and underlying lines and equipment are normal.
3. If the normal work shows that the door host and the line and equipment are normal; then cut off the system power supply, and then connect the main line of the next layer of the system, the second layer of debugging (system power must be off), in turn up .
4. During the debugging of the unit building, it is necessary to start the debugging one by one from the bottom layer, that is, after the first layer is debugged, the second layer is debugged, and the debugging is continued until the whole unit is debugged. Commissioning is completed and it can work normally.
Under normal circumstances, the following voltage parameters can be used to determine the quality of the circuit or equipment by using the multimeter's voltage file;
Static, supply voltage and +B voltage to ground: 12V
Audio line A2 voltage to ground: 0V
Data line P voltage to ground: 0V
After calling the extension, the voltage of the audio line will change to ground: rise to 5.6V
At the same time, the moment of the call through the extension can be measured on the data line P line to a rapid change in pulse voltage between 0-5V change.
Regulating valve is a fluid control device, it can control fluid flow, pressure, temperature and other parameters, in order to achieve the purpose of regulating fluid flow characteristics. It is composed of a piston or ball spool, in which there is a manual or electric mechanism with adjustment function, it can control the position of the piston or ball spool, so as to change the pressure and flow rate in the valve, so as to adjust the flow characteristics of the fluid.
The main function of the regulating valve is to adjust the flow rate, pressure and temperature, so that the fluid flow characteristics are more stable, so as to improve the efficiency of the fluid. It can regulate the flow of fluid to keep it at a low level, thus saving energy; The pressure of the fluid can also be adjusted to keep it at a low level, thus reducing noise in the piping system; The temperature of the fluid can also be adjusted to keep it at a low level, thus preventing condensation in the piping system, etc.
Regulating Valve,Pressure Regulator Valve,Double Regulating Valve,Air Regulator Valve
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