Rotary vane vacuum pump can set the upper and lower limits of the required vacuum, when the pump reaches the upper limit of vacuum operation will automatically stop, when the vacuum drops to the lower limit when the pump automatically starts. The oil level of rotary vane vacuum pump needs regular inspection. To check the oil level of the rotary vane vacuum pump, the oil level should be in the center of the oil mark of the rotary vane vacuum pump, the oil level is too low, the exhaust valve can not be sealed, affecting the vacuum degree; the oil level is too high, will cause the start of fuel injection.
Before the rotary vane vacuum pump runs, take off the triangle belt, turn the motor to correct, and then start to avoid injection. During operation, the oil level rises slightly, which is a normal phenomenon. When the fuel is insufficient, vacuum pump oil is added from the fuel hole. Oil needs to be filtered to prevent debris from entering and plugging oil holes.
Rotary vane vacuum pump vacuum drop refers to the current measurement of rotary vane vacuum pump vacuum than the factory indicators or before the use of vacuum is low. There are many reasons for the low vacuum. Here are some major remedies:
1. The temperature of the gas being pumped may increase or be too high.
Solution: Reduce the temperature of the pumped gas, can be directly between the pumped system and the import of condenser.
2. The type of oil added to the rotary vane vacuum pump is different from before. Because different types of vacuum pump oil viscosity, concentration is different, the saturated vapor pressure in the oil is different, so the effect is different.
Solution: choose the right new vacuum pump oil according to the specifications and specifications of the product.
3. The oil passage in the vacuum pump is blocked or unobstructed, and there is no vacuum pump oil in the pump chamber to maintain a certain amount, which does not play the role of lubrication and sealing.
Solution: check whether the oil way is smooth and clean and replace the oil way parts in time.
4. In addition, it is also due to the pumped gas containing water vapor or condensable gas that causes the emulsification of vacuum pump oil discoloration, impurities blackening, etc. resulting in low vacuum.
Solution: Remove all the vacuum pump oil in the pump, and can repeatedly add the vacuum pump oil in the pump, until the color of the vacuum pump oil is normal. Corresponding filtering device and drying device are installed to prevent water vapor or condensable gas from entering the pump strength or to open the gas ballast valve regularly. Vacuum pump oil can also be replaced regularly, but maintenance products may rise, other types of vacuum pumps that can pump vapor organic gases can be recommended.
5. the structural gap in the pump increases. This is due to the long-term exhaust gas containing dust particles, resulting in wear and tear between the rotor blade and the gap increased.
Solution: check whether the gap is too large, replace the new rotor or rotary vane. The key is to install filters and filters before the intake.
If possible, kindly suggest please your working industry/process, working pressure, working medium, etc. Given detailed request helps to gain better-matched customized solution. Thanks for your patience.
your request will be responsed within 3 hours, kindly pay attention to your email please.