Common faults and maintenance methods
Maintenance of common faults of oil-free air compressors:
- The oil-free air compressor works intermittently, and the air supply is insufficient. The reason for this failure is: insufficient voltage. Start from the humming sound, such as observing the current running current is greater than 5 am (the working current of ordinary 520 watts and 840 watts oil-free oil-free air compressors is 2.8A and 3.8A respectively). The minimum working voltage of the oil-free head is 198V, and it is difficult to start if it is lower than 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 purchase a small voltmeter for easy power monitoring. (A small voltmeter is only 5 yuan a.) If the voltage is low, install an automatic voltage regulator. B start capacitor leakage. When the capacitor leaks, the head of the screw air compressor can also start, but the current is relatively slow. Due to the large current of the air compressor, the machine will heat up quickly, and the nose will quickly protect and stop. This question is new, but pay attention to the number of UF, too big or too small is not good.
- The oil-free air compressor works non-stop, but the gas is still insufficient. The oil-free air compressor works, so that the gas cylinder has a little pressure when it is shut down. Use your ears to listen to the oil-free air compressor on the external pipeline, the gas cylinder on the air supply pipe of the oil-free air compressor, the check valve, the safety valve, the pressure switch and other joints are all leaking. If the above is ruled out the problem could be a worn nose or an oil free air compressor with multiple handling stations. overloaded. As for the damaged leather cup, the bowl has to be changed, and the general life of the bowl is about 3 years.
- The oil-free air compressor can work, but the noise is obviously higher than the original one. This phenomenon is that the spare parts on the machine are loose, and then check whether the running current is normal. Under normal circumstances, the air compressor is generally used for several years. The environment of the oil-free air compressor should be far away from dusty places. After unplugging the power supply regularly, use high-pressure air to blow out the dust on the surface and two leaves. The noise is too loud due to four If the motor bearings are worn by dust, the corresponding bowl will be affected. Replacement oil-free air compressor tools and accessories.
- Every time the oil-free air compressor works, the air pressure of the gas cylinder must be put at zero air pressure before it can start working. Otherwise, it cannot be started. When the power is turned on, the nose turns very slowly and there is a buzzing sound. The current is also large. This is because a part called the one-way valve is stuck with dirt, and its position is connected to the air outlet pipe (or high-pressure pipe) of the machine head and the other end is connected to the gas cylinder. It is generally a copper piece, and some factories have iron pieces with three outlets. Its function is to allow the gas blown out of the machine head to only enter the cylinder and the gas in the cylinder cannot come out. Its interior is a spring and a film. If the film is blocked by dirty things, it will cause reverse air leakage, and the second start of the machine head will be pressed by high pressure and cannot be started. The solution is to use a wrench to open the valve cover behind the one-way valve, wash it and put it back as it is.
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