Oil-free air compressor maintenance and common faults

Oil-free air compressor common fault maintenance:

1. The oil-free air compressor works intermittently and the air supply is insufficient. The reason for this failure is: insufficient voltage. Starting from the buzzing sound, if the operating current of the observation current is greater than 5: 00 a.m. (the operating currents of ordinary 520 watt and 840 watt oil-free air compressors are 2.8A and 3.8A respectively). The minimum working voltage of oil-free head is 198V, which is difficult to start below the head voltage. Frequent starting will cause the head to heat up. The final circuit protection stops. until the temperature drops and starts. It is recommended to buy a small voltmeter for easy power monitoring. (small voltmeter only 5 yuan a.) If the voltage is low, install an automatic voltage regulator. B Start capacitor leakage. When the capacitor leaks, the screw air compressor head can also be started, but with a slower current, the air compressor will heat up faster due to the large current, and the nose will soon protect the shutdown. This problem is new, but pay attention to the number of UF, too large or too small is not good.

The oil-free air compressor keeps working, but the gas is still insufficient. The oil-free air compressor works so that the gas cylinder has a little pressure when it is stopped. Use your ears to listen to the oil-free air compressor of the external pipeline, the gas cylinder, check valve, safety valve, pressure switch and other joints on the oil-free air compressor supply pipe have leaks. If the above problems are eliminated, it may be nose wear or an oil-free air compressor with multiple processing stations. Overloading. As for the damaged leather cup had to change the bowl, the general life of the bowl is about 3 years.

3, oil-free air compressor can work, but the noise is significantly greater than the original. This phenomenon of excluding spare parts on the machine is loose, and then check whether the operating current is normal. If the normal situation, the air compressor is generally used for several years, the environment of the oil-free air compressor should be far away from the dusty place. After regularly unplugging the power supply, use high-pressure air to blow out the dust on the surface and two leaves. The noise is too loud because the four The motor bearings are all dust and worn, and the corresponding bowl will be affected. Replace oil-free air compressor tools and accessories.

4. The oil-free air compressor must put the air pressure of the gas cylinder to zero air pressure before starting the work. Otherwise, it cannot be started. When the power is turned on, you can see that the nose is turning very slowly and there is a buzzing sound. The current is also large. This is because a fitting called a one-way valve is stuck with dirty things, and one end of it is connected to the head outlet pipe (or high-pressure pipe) and the other end is connected to the gas cylinder. It is generally a copper piece, some factories have iron pieces, there are three exports. Its function is to make the gas from the nose can only enter the gas cylinder but the gas from the gas cylinder cannot come out. Inside it is a spring and a film. If dirt sticks to the film, it will cause reverse air leakage, then the second start of the machine head will be pressed by high pressure and unable to start. The solution is to use the wrench to open the valve cover behind the one-way valve, please wash it back as it is.