2XZ-4 direct coupled rotary vane vacuum pump

2XZ-4Rotary vane vacuum pumpCharacteristics and Applications:

It has the advantages of compact structure, small volume, light weight, low noise, and low vibration. So, it is suitable as a front-end pump for diffusion pumps, and more suitable for precision instrument matching and laboratory use. For example: mass spectrometry instruments, refrigerators, assembly lines, vacuum freezing, dryers, etc.

2XZ-4Rotary vane vacuum pumpMain technical parameters

2XZ-4Technical parameters of rotary vane vacuum pump:

Form: Directly connected two-stage series rotary blade

Extraction rate: 4 liters per second

Ultimate vacuum: 6 × 10-2 Pa

Speed: 1400 revolutions per minute

Inlet straight through: Φ 10 mm

Pump oil temperature rise: 40 ℃

Motor power: 0.55KW

Noise decibel 64

2XZ-4Main features of rotary vane vacuum pump:

Operation instructions
1. Check the oil level and fill it to the center of the oil gauge when stopping the pump. Low pressure cannot act as an oil seal for the exhaust valve, affecting the vacuum degree. Excessive pressure may cause fuel injection during atmospheric start-up. During operation, the oil level rises slightly, which is a normal phenomenon. Oil extraction
Add clean vacuum pump oil of the specified grade through the oil filling hole. After refueling, you should tighten the screw plug. The oil should be filtered to prevent impurities from entering and blocking the oil hole.
2. The pump can be started once under atmospheric or any vacuum level. If an electromagnetic valve is installed on the pump port, it should operate simultaneously with the pump.
When the ambient temperature is too high, the temperature of the oil increases, the viscosity decreases, and the saturated vapor pressure increases, which can cause a decrease in the ultimate vacuum, especially the total pressure measured by a thermocouple. By strengthening ventilation and heat dissipation, or improving pump oil performance, the ultimate vacuum can be improved.
4. Check the maximum vacuum of the pump using a compression mercury vacuum gauge. If the gauge has been fully pre drawn and calibrated, and the pump temperature has reached stability, the pump port and gauge should be directly connected. Within 30 minutes of operation, the maximum vacuum will be reached. The value measured by the total pressure gauge is related to the pump oil, vacuum gauge, and gauge errors, and sometimes the errors can be very large, which can only be used as a reference.
5. If the relative humidity is high or the extracted gas contains a lot of condensable steam, after connecting the extracted container, it is advisable to open the gas damper and close it after running for 20-40 minutes. Before stopping the pump, the gas damper can be opened and operated without load for 30 minutes to extend the service life of the pump oil.
6. Oil selection: The viscosity of pump oil affects the starting power and the maximum vacuum of the pump. When the viscosity is high, it is beneficial for the vacuum degree, and the starting power is higher. The saturated vapor pressure of oil at pump temperature will affect the ultimate total pressure of the pump, the lower the better. The viscosity of high-speed vacuum pump oil and 3 # diffusion pump oil is higher than that of 1 # vacuum pump oil, and the saturated vapor pressure is lower than that of 1 # vacuum pump oil, but the price of 3 # diffusion pump oil is higher. The specific oil to choose can be selected based on the above introduction combined with specific usage requirements.