**IC Card Water Control Function**
As social civilization has advanced to a certain level, the "pay first, then use water" model of IC card water control is no longer considered the sole method for water fee collection. In industrialized countries, this system is typically applied within enterprises for water conservation management. Alongside planned water quotas and actual consumption, universities also implement internal water-saving measures. For instance, in student dormitories, IC card water control devices are used to regulate water usage. Ordinary water meters are rarely used, and the practice of using water before charging is not encouraged.
For these countries, the issue goes beyond mere water management—it touches on human rights. People who cannot afford to pay still have the right to access clean water for survival. Therefore, such prepayment systems are not implemented. Moreover, even with advanced economies and high living standards, electricity and gas supply systems still follow a post-payment model. The principle of paying after use has proven effective without leading to significant arrears or social issues. As society continues to develop, prepayment models like those used in IC card water meters are gradually being replaced by remote transmission and automated meter reading systems.
**Applications**
IC card water control systems are mainly used in schools, mines, hospitals, boiling water rooms, and bathhouses. They are ideal for managing water usage with a "pay first, then use" approach, especially in scenarios requiring intelligent and automated measurement.
**Installation Precautions**
1. The water control device has a specific flow direction. During installation, ensure that the arrow on the bottom of the casing aligns with the direction of water flow. If the device does not respond when swiping or the solenoid valve doesn't open, it may indicate incorrect installation direction.
2. Never connect 220V directly to the water control unit, as this could damage the device. Always use a power adapter to provide 12V DC power. Connect the positive and negative lines to the power input of the water controller. If the device doesn’t power on, try reversing the connections. The unit has built-in circuit protection, so improper wiring won’t cause damage. If the cable is too short, extend it carefully yourself.
3. When tightening the water inlet nut, hold the water control unit with one hand while gently securing the nut with the other. Avoid applying excessive force. Similarly, for the outlet side, hold the hex screw with one hand and use a wrench to tighten the nut gently. Do not use brute force, as this may lead to damage or failure.
4. Each water controller package includes two sets of water meter connectors (nut, copper sleeve, silicone pad). Be aware that the two nuts are different. The higher-column nut should be installed on the inlet side, while the lower-column one is placed on the outlet side. Depending on the length of the water control unit, the connectors can be attached on either side of the pipe, allowing for flexible installation.
5. It is best to install the power supply in a safe, dry location, such as a standard electrical socket that is not prone to water exposure. The power adapter must be securely fastened and not easily dislodged. Ensure that the outlet is dedicated to 220V mains power. Unauthorized or unsafe wiring is strictly prohibited.
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