NEWS & BLOG
What should be noted before using a rotary vane vacuum pump?
Category: Industry News
Time: 2021-01-19
Summary: 1. Vacuum pump oils for rotary vane vacuum pumps of different types and grades must not be mixed. 2. When the rotary vane vacuum pump is not in use, please seal both the inlet and outlet ports with rubber plugs to prevent foreign objects from entering the pump. 3. Pay attention to the steps outlined in the product operating instructions. Connect the three-phase power cable according to the specifications, ensuring that the rotation direction of the three-phase motor matches the arrow direction on the pump bracket. For single-phase motors, simply plug them directly into a power socket. Only after passing the trial operation can you begin normal operation. 4. The rotary vane vacuum pump and its surrounding environment should always be kept clean to prevent debris from entering the pump body. 5. The connecting pipe at the inlet of the rotary vane vacuum pump should not be too long. Be sure to check that the external connecting pipes, joints, and containers are leak-free and properly sealed; otherwise, it may affect the ultimate vacuum and reduce the service life of the vacuum pump. 6. If a vacuum pump becomes contaminated during use, it must be disassembled and cleaned. Please ensure that only qualified vacuum pump technicians perform the disassembly and cleaning, following the prescribed maintenance procedures to avoid damaging the machine. 7. When unpacking, first check whether the purchased rotary vane vacuum pump has been damaged during transportation and whether it meets the required specifications. If you have any questions or concerns, please call our sales engineer immediately. 8. Before using and commissioning the rotary vane vacuum pump, carefully read the user manual, strictly follow the product operating procedures, and pay attention to first unscrewing the oil-filling screw plug and adding oil up to the 2/3 mark through the oil-filling port. Then, add a small amount of pump oil through the inlet pipe port to enhance lubrication within the pump chamber. If the oil level in the exhaust valve is too low, it will fail to provide proper sealing and affect the vacuum degree; if it’s too high, it may cause oil spray. 9. The rotary vane vacuum pump is equipped with a double anti-backflow device. If backflow occurs, promptly contact a professional technician for repair and resolution. 10. Do not use the pump to draw gases containing particles, dust, or substances that are gel-like, aqueous, liquid, or corrosive. 11. If the rotary vacuum pump is improperly stored or used, allowing moisture and other volatile substances to enter the pump and affecting the ultimate vacuum, open the gas ballast valve for purification. If the pump oil becomes contaminated by mechanical or chemical impurities, replace the oil immediately. 12. Do not use the pump if there are system leaks or if the container connected to the vacuum pump is excessively large and operates under prolonged vacuum conditions. 13. Depending on the pump’s working environment temperature requirements—generally between 5℃ and 40℃—with relative humidity no higher than 85% and an inlet pressure of 1.3×10³ Pa—vacuum pumps with a pumping speed above 0.5 l/s are equipped with a ballast valve. If the relative humidity is high, you can open the ballast valve to purify and remove a small amount of water vapor without contaminating the pump oil, thus extending the oil’s service life. After purification, you can promptly close the ballast valve. 14. During operation, the oil level in the rotary vane vacuum pump’s oil tank must not fall below the center of the oil-level indicator. 15. Do not use the pump to draw gases containing particles, dust, or substances that are colloidal, aqueous, liquid, or corrosive. 16. Instructions for changing the oil in the rotary vane vacuum pump: First, start the pump and run it for half an hour to dilute the old oil. Then, stop the pump, loosen the oil drain plug, and drain the dirty oil. Next, open the inlet port and run the pump for two minutes. During this time, slowly add a small amount of clean vacuum pump oil through the inlet port to flush the pump interior. After draining the dirty oil, re-tighten the drain plug, then loosen it again and use a funnel to add clean vacuum pump oil through the inlet port. Because the rotary vane vacuum pump maintains isothermal conditions during gas compression, it can handle dusty gases and flammable/explosive gases while offering these outstanding features, and its quality is also quite good. The above are the operating instructions for the rotary vane vacuum pump provided for your reference. If you’d like to learn more about vacuum pumps or have any technical questions or product needs related to vacuum equipment, feel free to reach out to us for consultation.
1. Vacuum pump oils for rotary vane vacuum pumps of different types and grades must not be mixed.
2. When the rotary vane vacuum pump is not in use, please seal the inlet and outlet ports with rubber plugs to prevent dirt from entering the pump.
3. Pay attention to the steps outlined in the product operating instructions. Connect the three-phase power cable according to the specified procedure, and ensure that the rotation direction of the three-phase motor matches the direction indicated by the arrow on the pump bracket. For single-phase motors, simply plug them directly into a power outlet. Only after passing the trial operation can you begin normal operation.
4. The rotary vane vacuum pump and its surrounding environment should always be kept clean to prevent foreign objects from entering the pump body.
5. The connecting pipe for the inlet of the rotary vane vacuum pump should not be excessively long. Be sure to check that the external connecting pipes, fittings, and containers of the vacuum pump are leak-free and remain sealed; otherwise, this could affect the ultimate vacuum level and reduce the service life of the vacuum pump.
6. If a vacuum pump becomes contaminated during use, it must be disassembled and cleaned. Be sure to have a professional vacuum pump technician perform the disassembly and cleaning, and follow the prescribed maintenance procedures carefully to avoid damaging the equipment.
7. When unpacking, first check whether the rotary vane vacuum pump you purchased has been damaged during transportation and whether it meets your usage requirements. If you have any questions or uncertainties, please call our sales engineer immediately.
8. Before using and debugging the rotary vane vacuum pump, please read the instruction manual carefully, strictly follow the product’s operating procedures, and pay attention to first unscrewing the oil-filling screw plug and adding oil through the oil-filling port until it reaches two-thirds of the oil-level mark. Then, add a small amount of pump oil through the inlet pipe opening to enhance lubrication within the pump chamber. If the oil level in the exhaust valve is too low, it will fail to provide adequate sealing, thereby affecting the vacuum degree; if it’s too high, it may cause oil spray.
9. The rotary vane vacuum pump is equipped with a dual anti-backflow device. If backflow occurs, please promptly contact a qualified technician for repair and resolution.
10. Inhaling gases containing particles, dust, or colloidal, aqueous, liquid, and corrosive substances. Not to be used:
11. If moisture and other volatile substances enter the rotary vacuum pump due to improper storage or use, thereby affecting the ultimate vacuum level, please open the gas ballast valve to perform purification. If the pump oil becomes contaminated with mechanical or chemical impurities, replace the pump oil immediately.
12. The system has air leaks, and the container paired with the vacuum pump is oversized, causing it to operate under prolonged vacuum conditions and rendering it unusable.
13. Depending on the operating temperature requirements of different pumps—typically within the range of 5℃ to 40℃—with relative humidity not exceeding 85% and an inlet pressure of 1.3×10³ Pa—vacuum pumps with a pumping speed of 0.5 l/s or higher are equipped with a ballast valve. If the relative humidity is relatively high, the ballast valve can be opened to purify and remove a small amount of water vapor without contaminating the pump oil, thereby extending the service life of the pump oil. After purification, the ballast valve can be promptly closed.
14. During operation, the oil level in the oil tank of the rotary vane vacuum pump must not fall below the center of the oil-level indicator.
15. Pumping gases containing particles and dust, or colloids, water, liquids, and corrosive substances. Not suitable for use:
16. Instructions for Changing the Oil in a Rotary Vane Vacuum Pump: The oil-changing procedure begins by starting the pump and running it for half an hour to dilute the old oil. Then, stop the pump, loosen the oil plug to drain the contaminated oil, and subsequently open the inlet port to run the pump for two minutes. During this period, you can slowly add a small amount of clean vacuum pump oil through the inlet port to flush the pump’s internal components. After the contaminated oil has been completely drained, re-tighten the drain plug. Next, loosen the drain plug again, and use a funnel to carefully add fresh vacuum oil through the oil inlet port.
Since rotary vane vacuum pumps operate isothermally during the gas compression process, they can handle dusty gases as well as flammable and explosive gases, boasting these outstanding capabilities while maintaining excellent quality. The above is the operating manual for rotary vane vacuum pumps that we’d like to share with you. If you’d like to learn more about vacuum pumps or have any technical questions about vacuum products or specific product requirements, feel free to reach out and consult with us.