Electrical system is Printing machine control center, which includes a main cabinet, and many of the peripheral light of the console electromagnetic induction device and implementation of the device. In this system, failure of any of the widgets may result in the machine not functioning properly. Therefore, the maintenance of electrical systems is extremely important, this article will be my company's Heidelberg printing press, for example, introduces several major points of maintenance of electrical systems.
Keep the printing workshop environment suitable and stable
The working environment of the printing workshop is suitable and stable, which is an important guarantee for the normal operation of the electrical system. The main factors affecting the normal operation of electrical systems are high temperature, high humidity, dust, electromagnetic interference and so on.
High temperature
When the electrical system works, it will generate heat. Excessive temperature will accelerate the aging of electrical components and shorten the service life of electrical components. The auxiliary equipment of the printing machine, such as the alcohol cabinet, the central air supply cabinet, the infrared drying cabinet, the UV cabinet, etc., are all large heat sources, which will make the temperature of the electrical system too high. It is very important to install an exhaust air dissipating device for these devices to maintain a suitable temperature (22 to 28 ° C) in the printing shop.
2. High humidity
When the humidity is too high, it is easy to form condensation on some electrical components once the temperature changes, which is mixed with dust, which may cause short circuit or open circuit of the electrical components and damage the electrical components. Excessive humidity can also easily rust individual components, resulting in functional failure. The relative humidity of the printing shop should be kept at 50% to 70%. Printing companies in the South should pay special attention to this.
3. Dust
Due to the reason of the paper falling off the powder and using the dusting, the printing workshop often has more dust, which may easily lead to poor contact of the electrical components, resulting in failure or damage of the electrical components. It is very important to install the cleaning device and clean the dust in time to ensure the normal operation of the electrical system. It is worth noting that the dust cleaning of the electrical system must be carried out after the power supply is cut off.
(1) Cleaning the main electric control cabinet
The surface dust in the main electric control cabinet can be sucked up first by the vacuum cleaner, and then the dust on the surface of the electric component can be blown off by a blowing device, and the circuit board can be taken out one by one if necessary. When cleaning, do not let the vacuum cleaner and the blowing device touch the components. Do not blow the circuit board with high-pressure airflow to avoid damage to the components.
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