Tangshan UMG Medical Instrument Co.,Ltd.
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Tangshan UMG Medical Instrument Co.,Ltd.
Tangshan UMG Medical Instrument Co.,Ltd.

Common Faults That Are Prone to Occur in Dental Oilless Air Compressors

Ⅰ. What are the serious faults of the dental oilless compressor?


1. Inhalation process


The screw-type air intake side suction port is designed so that the compression chamber can fully inhale, while the screw-type compressor has no intake and exhaust valve groups, and the intake air is only regulated by the opening and closing of a regulating valve.


When the rotor rotates, the cogging space of the main and auxiliary rotors is larger when it is transferred to the opening of the inlet end wall of the oilless compressor. At this time, the cogging space of the rotor is communicated with the free air of the air inlet.


Since all the air in the tooth groove is exhausted during exhaust, the tooth groove is in a vacuum state at the end of the exhaust. When it turns to the air inlet, the outside air is sucked in and flows into the tooth groove of the main and auxiliary rotors along the axial direction.


When the air fills the entire tooth groove, the end face of the intake side of the rotor turns away from the air inlet of the casing, and the air between the tooth grooves is closed.


2. Sealing and conveying process


At the end of the suction of the main and auxiliary rotors, the tooth peaks of the main and auxiliary rotors of the oil-free air compressor are closed with the casing. At this time, the air is closed in the tooth groove and no longer flows out, that is, the sealing process.


The two rotors continue to rotate, their tooth peaks and tooth grooves match at the suction end, and the matching surface gradually moves to the discharge end.


3. Compression and fuel injection process


During the conveying process, the meshing surface gradually moves to the exhaust end, that is, the gap between the meshing surface and the exhaust port gradually decreases, the gas in the tooth groove is gradually compressed, and the pressure increases, that is, the compression process of the oilless compressor.


At the same time of compression, the lubricating oil is also injected into the compression chamber and mixed with the chamber air due to the action of the pressure difference.


Ⅱ. What should I do if the dental oilless compressor fails to start?


First of all, we have to judge what model our dental oil-free air compressor is. Is it piston, screw or scroll? If it can't be started, it means that it can't be started or there is no shutdown prompt.


When encountering this kind of problem, the first thing we have to check is the voltage and current of the oilless compressor. After confirming that there is no problem with both of them, we will consider whether the machine itself has a problem.


If it is confirmed that it is indeed the problem of the machine after careful inspection, what we need to check at this time is the circuit, and the controller and the host must be considered. Basically, after the above steps, the problem that the oil-free air compressor cannot be started can be solved.


The oil-free air compressor works intermittently, and there is often insufficient air supply: this failure is usually caused by insufficient current and voltage connected to the oil-free air compressor. There is a buzzing sound when it starts up.


This is because the low voltage makes the oil-free air compressor head work when the voltage is less than 200V. This problem will also cause the oil-free air compressor head to start frequently, causing the temperature to rise, triggering the circuit protection device and causing shut down, and when the temperature drops, the oilless compressor will restart again.


For users who often have this problem, our suggestion is to replace the current at work or install an automatic voltage stabilizer to solve it.

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