Common Failures and Repairs of Air Compressors

Common Failures and Repairs of Air Compressors

Air compressors are widely used in various industries with the development of technology. However, no matter what type of air compressor, there will be some problems during use. The following editor will introduce some common faults and maintenance methods. Let's take a look.

method:

1. The air compressor is still working, but the air supply is insufficient. The air compressor works at a certain pressure and stops the gas tank.

Use your ears to listen to the air leakage in the pipelines outside the air compressor, the compressor air supply pipeline above the air tank, the one-way valve, the safety valve, the pressure switch and other links. If the above problems are eliminated, it may be that the scalp cup is worn or exceeds the rated flow, and the machine is overloaded. As for the damage of the leather cup, the leather cup must be replaced. The life of an ordinary leather cup is about 3 years.

2. The air compressor works intermittently and the air supply is insufficient.

This fault is caused by insufficient voltage. There is a buzzing sound at the beginning. For example, the running current at this time is too large. The minimum working voltage of the oil-free head is 200 volts, and it is difficult to start at this voltage. Frequent starting will cause the head temperature to rise. Finally, it will short-circuit and shut down. When it is turned on again, it should wait for its temperature to drop before turning on. For areas where voltage fluctuations often occur, it is recommended to install an automatic voltage stabilizer.

3. Starting capacitor leakage.

When leakage occurs, the compression head can also start, but the speed is slow and the current is large. Due to the large current, the head of the machine heats up and the machine head will be shut down soon. This problem can be changed to a new one, but we should pay attention to the same number of ultrafiltration membranes, too large or too small.

Every time the air compressor works, the air pressure in the air tank must be reduced to zero pressure before starting. Otherwise, it will not start. When the power is turned on, you can see that the magnetic head rotates very slowly and there is a buzzing sound. The current is also very large.

This is because the one-way valve is blocked, and its position is connected to the outlet pipe (or high-pressure pipe), and the other end is connected to the air tank, which has three outlets. Its function is to allow the exhaust gas from the engine to only enter the air tank, but the gas in the air tank cannot come out. There is a spring and a film inside. If dirt sticks to the film, it will cause reverse leakage. Use the handle to open the valve cover behind the check valve. Please wash it clean and put it back as it is.

4. The air compressor can work, but the noise is significantly louder than the original one.

This phenomenon checks whether the running current is normal after the loose parts on the machine are removed. If normal, the machine is usually used for several years. The placement environment of the oil-free air compressor should be away from dusty places. Unplug the power supply regularly and use high-pressure air to blow out the dust on the surface and the two fan blades. The noise is too loud because the four bearings are worn by dust, so the leather cup will also be affected. Replace the tools and accessories that require special oil-free air compressors.

Air Compressor Safety

The operation of the air compressor system is very safe. Danger rarely occurs, but in rare cases, it can occur due to human error. To reduce the possibility of human error, it is important to keep in mind the following safety precautions:

① Read the operating instructions carefully. Carefully read the user manual provided by the manufacturer to understand the working conditions of each component of the compressor.

② Before starting the machine each time, carefully check the pipelines, joints, control components and the external status of the entire system. Do not use it if there are any problems.

③ Use a suitable power socket. Using an improperly grounded socket may cause damage to the electrical parts. A well-grounded three-pin socket must be used.

④Always ensure that the compressor surface is dry when working. The compressor should be placed in a place with dry and clean flowing air. Avoid dust, dirt and diffuse paint mist splashing onto the surface of the compressor.

⑤ Most compressors can start and shut down automatically, and the power supply must be cut off when servicing the equipment.

⑥ Be careful not to touch the working parts with your hands. High-speed rotating parts can injure the human body. Keep your hands away when the compressor is working. Do not wear loose clothes to prevent being entangled by the rotating parts. Unplug the power plug before repairing the compressor.

⑦ Do not remove the protective cover of the transmission belt, ensure that other safety protection devices are connected reliably, and keep them in good working condition. Remember that the temperature of the compressor is extremely high when it is working, so do not touch the body.

⑧Be careful when releasing high-pressure gas and use a gas pressure regulator to reduce the pressure. High-speed airflow will blow up dust and other foreign matter.

⑨ Avoid tangling the gas pipe, and be careful not to let the gas pipe, power cord and external cable touch sharp objects, spilled chemicals, engine oil and wet ground. All of these can cause danger.

⑩ When removing the pressure of the gas tank, moving the gas pipe or replacing the pneumatic tool, make sure that the reading value of the pressure regulator instrument is zero. Note: Do not release the high-pressure gas too quickly, otherwise it will cause danger.