1. Overview
Vacuum pump introduction
XD series vacuum pump is a single stage rotary vane oil seal vacuum pump, suitable for pumping dry air and other dry gases. It is one of the main equipment for low and medium vacuum, and it can be used alone or as a pre-pump for other vacuum pumps. The vacuum pump has the characteristics of reliable running performance, less wearing parts, low vibration, low noise and high efficiency.
XD series vacuum pump is the introduction of foreign advanced technology, the key parts are imported components or imported materials, XD series vacuum pump can completely replace similar foreign products.
Vacuum pump applications
XD series vacuum pump is suitable for low and medium vacuum fields, mainly used to remove air and other dry gases. But you can't aspirate the rot
Corrosive, toxic, flammable, explosive gases, and gases containing small particles or dust cannot be aspirated.
XD series vacuum pump can work in the ambient temperature 5-30, humidity ≤80%, well ventilated indoor long-term.
In addition to the above application range, the XD series vacuum pump can also expand its application range, such as:
1.2.1.If you want to increase the pumping volume and improve the vacuum degree, it can be achieved with Roots pump combination unit form.
1.2.2. If humid air or condensable gas is pumped, install a condenser in front of the vacuum pump, and install a gas ballast valve on the vacuum pump.
1.2.3. If the gas with dust particles is removed, the dust filter can be installed before the vacuum pump.
1.2.4. If the corrosive gas is removed, an anti-corrosion gas filter can be installed in front of the vacuum pump.
Vacuum pump working principle
The vacuum pump works according to the rotating vane principle, the eccentric mounted rotor rotates in the pump body, and the centrifugal force forces the blade to slide along the narrow slot of the rotor to the pump body wall. The blade separates the crescent space between the pump body and the rotor into several working cavities. When the working chamber is connected to the air inlet, the gas is inhaled. As the rotor continues to rotate, the inhaled gas is compressed and then discharged into the oil separator. The constant pressure difference causes the vacuum pump oil to enter the compression chamber. The vacuum pump oil and the pumped gas are discharged into the oil separator together, and the oil and gas are separated through the exhaust filter. The vacuum pump oil falls back to the bottom of the oil separator, and enters the working chamber again through the float valve (oil circulation). The oil-free gas is discharged to the atmosphere through the exhaust port.
2. Installation
2.1 Installation
This vacuum pump is used in industrial fields, installation must be operated by professionals, please read and understand the instructions before installing and using the vacuum pump, if you have any questions, please contact the company in time.
Note: Before handling the vacuum pump, ensure that the vacuum pump oil has been drained. After oil is injected into the vacuum pump, it cannot be moved. Tilting the vacuum pump will cause a large amount of oil to enter the pump chamber. When starting the vacuum pump, the blade and the vacuum pump will be damaged immediately.
Installation environment
- The installation site should be wide, with good lighting, low relative humidity of the air, little dust, clean air and good ventilation. To facilitate operation and maintenance.
- The ambient temperature ranges from 5 ° C to 40 ° C. The higher the ambient temperature, the higher the vacuum pump temperature.
- Ambient pressure: atmospheric pressure.
- Ensure that the vacuum pump is placed horizontally.
- Ensure that the vacuum pump base or mounting support is stable.
- Ensure that the vacuum pump is not hit by falling heavy objects.
- Reserve maintenance space. The distance between the vacuum pump and the wall shall be at least 1 meter. The space at the top of the vacuum pump shall be at least 1 meter and the channel shall be reserved for maintenance.
- The vacuum pump should be installed in a non-explosion-proof area, and the surface of the vacuum pump is not in contact with flammable materials (such as plastic, wood, paper, etc.).
- Ensure that the vacuum pump is installed in a well-ventilated position to ensure that the vacuum pump can be fully cooled.
- When the vacuum pump is operating, the surface temperature can reach more than 72. Please be careful of burns. Ensure that the vacuum pump is not touched and protect it if necessary.
- Ensure that the vacuum pump is positioned in a position where the oil level mirror is easily visible and that there is sufficient space for easy refueling, oil discharge, and exhaust filter replacement.
2.2 Piping and foundation
2.2.1 Precautions for piping air pipes
- When piping the main pipe, the pipe diameter should not be smaller than the diameter of the intake flange of the vacuum pump. It is better to choose the pipe diameter with a larger design value so that the pressure drop is not too large. The intake pipe should be equipped with a shutoff valve.
- Branch pipe must be connected from the top of the main pipe. No solids or liquids are allowed to enter the vacuum pump.
- Do not arbitrarily reduce the diameter of the main pipe. If it is necessary to reduce the diameter of the pipeline, the gradual pipe must be used, otherwise there will be turbulence at the joint, resulting in a large pressure loss. The use of elbows and various valves in the pipeline should be minimized to reduce the pressure loss of the pipeline.
- When piping the main pipe, ensure that the connected pipe does not cause attachment stress on the vacuum pump. If necessary, install flexible connectors.
- Exhaust pipes are not allowed to be equipped with throttling devices. Exhaust pipes should be installed in such a way as to prevent foreign matter from returning into the pump.
- For the positions of the air intake and exhaust ports, see ← in the vacuum pump outline diagram.
2.2 Piping, foundation
2.2.1 Air piping precautions
- When piping the main pipe, the pipe diameter should not be smaller than the diameter of the intake flange of the vacuum pump. It is better to choose the pipe diameter with a larger design value so that the pressure drop is not too large. The intake pipe should be equipped with a shutoff valve.
- Branch pipe must be connected from the top of the main pipe. No solids or liquids are allowed to enter the vacuum pump.
- Do not arbitrarily reduce the diameter of the main pipe. If it is necessary to reduce the diameter of the pipeline, the gradual pipe must be used, otherwise there will be turbulence at the joint, resulting in a large pressure loss. The use of elbows and various valves in the pipeline should be minimized to reduce the pressure loss of the pipeline.
- When piping the main pipe, ensure that the connected pipe does not cause attachment stress on the vacuum pump. If necessary, install flexible connectors.
- Exhaust pipes are not allowed to be equipped with throttling devices. Exhaust pipes should be installed in such a way as to prevent foreign matter from returning into the pump.
- For the positions of the air intake and exhaust ports, see ← in the vacuum pump outline diagram.
2.2.2 Basics
- The vibration generated by the vacuum pump is very small, so it is not necessary to do a special foundation, but the ground should be flat and horizontal, and the underground can not be soft soil, and can be fixed by bolts through the screw holes on the rubber cushion block.
2.3 General safety specifications for electrical appliances
- Select the correct diameter of the power cord according to the power of the vacuum pump. Do not use too small diameter; otherwise, the power cord may be burned out due to high temperature.
- It is best to use a separate power system for vacuum pumps, especially to avoid parallel use with other different power consumption systems, which may cause overload of vacuum pumps due to excessive voltage drop or three-phase current imbalance. Under normal circumstances, the voltage drop shall not be less than 5% of the rated voltage, and if the three phase current is unbalanced, the ratio of the lowest phase current to the highest phase current shall not exceed 5%.
- Configure the appropriate NFB(non-fuse switch) according to the vacuum pump motor power to maintain the safety of the power system.
- Check that the voltage and frequency of the vacuum pump are correct when distributing power. The standard motor power supply on the vacuum pump is three-phase 380V,
- 50Hz.
- The ground cable of the vacuum pump system should be reliably installed and not connected to the conveying pipe or cooling water pipe.
Note: The motor rotation direction is not correct, in a short time will damage the vacuum pump. Before starting the vacuum pump, ensure that the rotation direction of the vacuum pump is correct.
The method is a point motor, see whether the rotation direction of the motor fan is consistent with the arrow indicating on the motor, if the opposite, adjust any two phases in the three-phase power supply.
3. Operation
3.1 Check before startup
The inspection before starting is necessary to avoid major failures of the vacuum pump and improve the efficiency of use.
- Check whether the oil level is between MAX and MIN. The vacuum pump oil should not be too much or too little. If insufficient, it should be supplemented. Do not mix different brands of vacuum pump oil. When filling vacuum pump oil, ensure that there is no pressure in the system before opening the oil filling plug.
- Connect the power cable and ground cable, and test whether the voltage and power supply are correct.
3.2 Test run, start-up and shutdown
3.2.1 Test Run
Close the air intake. (Close the air inlet valve or seal the air inlet with a rubber gasket, the valve or rubber gasket shall be brought by the user).
Click the motor to check the rotation direction of the vacuum pump. If the rotation direction is not correct, then switch any two phases in the three-phase power supply.
3.2.2 Starting the System
- Open the air intake
- Turn on the power switch
3.2.3 Shutdown
- Close the air intake
- Turn off the power switch
3.3 Precautions during operation
- Stop immediately when there is abnormal sound and abnormal vibration in operation.
- There is vacuum or pressure in the pipeline and the body during operation. Do not loosen the pipeline or plug or open irrelevant valves.
- During long-term operation, if it is found that the oil level on the oil viewing mirror is not found and the temperature is too high, stop the machine immediately. Observe the oil level after stopping for 10 minutes. If it is found that the oil level is insufficient, replenish the vacuum pump oil when there is no pressure in the system.
3.4 Troubleshooting Methods for Long-term Shutdown
Long-term downtime should be carefully handled according to the following methods, especially in high humidity seasons or areas.
1) Stop for more than two months, need to do the following treatment:
- Close all openings to prevent moisture and dust from entering.
- Replace the vacuum pump oil before starting and run for 30 minutes.
- Move the machine to a dust-free and dry place as much as possible.
2) Restart the program
- Measure the insulation of the motor, should be more than 1MΩ.
- Other procedures are as described in the test run.
Note: After the vacuum pump has stopped using for a long time, the blades may stick. When the vacuum pump is started by the motor, the blades are in danger of being damaged. Therefore, after the vacuum pump is stopped for a long time, it must be turned by hand.
4. Maintenance
4.1 Vacuum pump oil specifications and oil change procedures and methods
4.1.1Vacuum pump oil has three main functions
- Lubrication: the vacuum pump oil can form an oil film between the pump cover, rotor, blade and pump body to avoid direct contact with each other and reduce friction.
- sealing effect: the oil film produced by the vacuum pump oil can seal the vacuum pump and improve the efficiency of the vacuum pump.
- Cooling effect: Because the vacuum pump oil absorbs a lot of compression heat, the compression process is close to isothermal compression, which reduces the power of the vacuum pump. In addition, vacuum pump oil can also reduce the noise caused by high frequency compression.
4.1.2 Vacuum pump oil specifications and recommended oils
Vacuum pump oil has a decisive impact on the performance of vacuum pump, if used improperly or incorrectly, it will lead to serious damage to vacuum pump.
Suggestion: Please use SYHPR vacuum pump special oil to ensure the service life of the vacuum pump, or use the same type of vacuum pump special oil.
4.1.3 Factors affecting oil change time
- poor ventilation, high ambient temperature, high humidity or rainy season, dusty environment.
- The vacuum pump oil is not good.
4.1.4 Precautions for using vacuum pump oil
- For the oil change time of vacuum pump oil, please refer to the relevant sections below.
- Do not let the vacuum pump oil exceed the service life of the oil, the oil should be replaced on time, otherwise the quality of the oil will be reduced, the lubrication performance will be poor, and the vacuum pump will be prone to spontaneous oil combustion due to the decrease of the burning point of the oil.
- After the vacuum pump is used for one year, it is best to use the vacuum pump oil to do a "system cleaning" work, which is to replace the vacuum pump oil when the new vacuum pump oil, let the vacuum pump run for 6 to 8 hours, immediately replace the vacuum pump oil, so that the remaining organic components of the original system can be cleaned, and the vacuum pump oil replaced again can have a better service life.
4.1.5 Oil Change Procedure
- First let the vacuum pump run, make the oil temperature rise, facilitate discharge, and then cut off the power supply, stop running.
- Open the oil plug when the machine is cool to the point that it is not hot and there is no pressure in the system.
- After the vacuum pump oil is drained, tighten the oil drain plug.
- Note: All vacuum pump oil in the system must be drained, such as pipes, coolers.
- Open the oil filling plug and add new vacuum pump oil. Tighten the oil filling plug at MAX.
Note: In the process of disassembling the injection and discharge plug, it is necessary to ensure the integrity of the sealing ring on the end to avoid the phenomenon of oil leakage.
4.2 Exhaust filter replacement procedure
- The exhaust filter has the function of fine separation, so its quality plays a crucial role in the cleanliness of the exhaust gas. Although there are exhaust filters with similar appearance to our company on the market, it is not guaranteed to meet the performance requirements of our original exhaust filter, and may reduce the efficiency and life of the vacuum pump. Please use our original exhaust filter.
- After the vacuum pump is shut down, check that the system has no pressure.
- Remove the securing bolts on the exhaust cap and remove the exhaust cap.
- Remove top plate assembly.
- Remove exhaust filter and replace with new filter.
- Install top plate assembly and exhaust cover in reverse order of disassembly.
- Suggestion: Replace the vacuum pump oil when replacing the exhaust filter.
Note: Be sure to place the new O-ring and exhaust filter into the oil separator, noting that it must be mounted in the same direction as the arrow marked on the exhaust filter.
Oil filter replacement steps
- After the vacuum pump is shut down, check that the system has no pressure.
- Open the oil plug, drain the vacuum pump, and close the oil drain plug.
- Replace the new oil filter.
Air intake filter replacement procedure
- After the vacuum pump is shut down, check that no vacuum exists in the system.
- Open the buckle on the intake filter cover to open the filter cover.
- Remove the old intake filter element and replace it with the new intake filter element.
- Close the intake filter cover and fasten the latch on the intake filter cover.
Daily maintenance
- Daily or before each operation: check the vacuum pump oil color as before starting up (see previous section), check whether the vacuum pump oil leaks, vacuum pump oil after static precipitation turbidity and sediment or oil black, the vacuum pump oil must be replaced.
- Run the new machine for 500 hours, clean the intake filter, use low pressure compressed air below 0.2MPa to blow the intake filter from inside out, and replace the oil filter and vacuum pump oil.
- Check, clean, or replace intake filters every 1000 hours or 3 months of operation.
- every 2000 hours or six months of operation, check whether the pipes are leaking, if there is leakage after cleaning and tightening; Check the vacuum pump oil and determine whether it is effective, and replenish the vacuum pump oil.
- Every 3000 hours or a year of operation, clean the intake valve, clean the dust outside the cooler and clean the internal lines. Replace intake filter, exhaust filter, vacuum pump oil.
5. Common faults and troubleshooting methods
Fault | reason | Elimination method |
The vacuum pump can not reach the vacuum degree, the motor current is too large, and the vacuum time is too long | The vacuum system or intake pipe is blocked or leaked | Check whether the pipeline is blocked or leaked, and remove |
Vacuum pump oil is contaminated or deteriorated | Replace the vacuum pump oil | |
Exhaust filter clogging | Replace exhaust filter | |
The air intake filter or screen is blocked | Clean or replace the intake filter and air filter screen | |
The suction valve is jammed by dirt | Clean suction valve and intake filter | |
The suction valve is jammed by dirt | Replace piping that meets requirements | |
Tubing leak or damage | Tighten the joint; Replace tubing or fittings | |
Seal ring or shaft seal leak | Replace the seal ring or shaft seal | |
The exhaust valve is damaged or stuck | Replace or clean the exhaust valve | |
The blade is stuck or damaged | Clean rotors, blades or replace blades | |
The clearance between the rotor and the pump body is incorrect | Adjust the clearance between rotor and pump body | |
The internal parts of the vacuum pump are damaged | Service vacuum pump | |
Abnormal noise or heavy load occurs after the vacuum pump is started | Motor out of phase | Check power supply and wires and remove |
Vacuum pump reversal | Correction direction | |
Long-term deactivation | Close the vacuum pump inlet, run the vacuum pump, and make the pump hot | |
The ambient temperature is high and the oil viscosity is too small | Switch to a slightly higher viscosity vacuum pump oil | |
The ambient temperature is low and the oil viscosity is too large | Switch to a slightly lower viscosity vacuum pump oil | |
Bad oil | Use our vacuum pump oil | |
If the oil is not changed for a long time, the exhaust filter is blocked and the oil is black | Clean the vacuum pump, replace the exhaust filter, replace the vacuum pump oil | |
Foreign matter enters the pump | Disassemble the machine and remove foreign bodies | |
Blade or bearing damage | Service vacuum pump | |
coupling is damaged | Replace the coupling | |
Vacuum pump does not work (motor does not turn) | The wire is too long or too thin, and the voltage is too low | Use suitable wires to provide normal voltage |
Motor overload protection is too small | Select motor overload protector according to rated motor current | |
The fuse is blown | Find out why the wire is blown and attach the fuse | |
Single phase motor capacitor is bad | Motor repair | |
The vacuum pump or motor is stuck | Inspect and repair vacuum pumps or motors | |
Motor failure | Repair or replace the motor | |
Smoke is emitted from the exhaust port | The sub-valve is stuck or blocked | Clean or replace the float valve |
The exhaust filter is off or blocked | Reinstall or replace the exhaust filter |
Fault | Reason | Elimination method |
The motor turns the pump but does not turn | The coupling is damaged | Replace the new coupling |
The vacuum pump blade is damaged | Foreign bodies enter the vacuum pump | Vacuum pump repair |
The vacuum pump inhales corrosive gases | Repair vacuum pump and check process flow | |
Vacuum pumps suck in large amounts of oil or liquid | Repair vacuum pump and check process flow | |
The vacuum pump did not turn correctly | Repair vacuum pump and correct steering | |
The vacuum pump oil consumption is abnormal | The sealing ring or shaft seal is damaged | Replace the seal ring or shaft seal |
The exhaust filter is off or blocked | Reinstall or replace the exhaust filter | |
The float valve is stuck or blocked, and oil is expelled from the exhaust port | Clean or replace the float valve | |
Vacuum pump leakage | Inspect and seal the leak area | |
The vacuum pump temperature is high | The ambient temperature is too high, and the intake air temperature is too high | Enhance cooling and ventilation |
The exhaust filter is partially blocked | Replace exhaust filter | |
Lack of ventilation | Enhance cooling and ventilation | |
Vacuum pump oil is insufficient | refuel | |
Vacuum pump oil deterioration | Clean vacuum pump, replace exhaust filter, vacuum pump oil | |
The intake or exhaust pipe is too long or too small | Replace piping that meets requirements | |
The power supply frequency or voltage is incorrect | Provide qualified power supply | |
The inlet and exhaust pipes, filters, and filters are blocked | Clean the inlet and exhaust pipe, filter screen, unclog, replace the filter | |
The oil turns black or sticky | Do not change the oil for a long time, the environment is poor, the oil is wrong or mixed with incompatible oil | Clean the vacuum pump, replace the exhaust filter and vacuum pump oil |
Oil becomes thin, mixed, and foamy | The oil is wrong or mixed with incompatible oil, and the oil inhales water vapor and becomes damp | Clean the vacuum pump, replace the exhaust filter and vacuum pump oil |
6. Vacuum pump technical parameters
Model parameter | XD-010 | XD-020 | XD-021 | XD-025 | XD-040 | XD-063 | XD-100 | XD-160 | XD-202 | XD-250 | XD-302 |
Rated flowm3/h | 10 | 20/21 | 20/21 | 25 | 40 | 63 | 100 | 160 | 200 | 250 | 300 |
Ultimate pressure(mbar) | 0.1~0.5 | 0.1~0.5 | 0.1~0.5 | 0.1~0.5 | 0.1~0.5 | 0.1~0.5 | 0.1~0.5 | 0.1~0.5 | 0.1~0.5 | 0.1~0.5 | 0.1~0.5 |
Noise (dBA) | 61 | 62 | 62 | 62 | 64 | 65 | 66 | 71 | 73 | 73 | 75 |
Working temperature() | 81 | 82 | 82 | 82 | 85 | 85 | 85 | 85 | 85 | 85 | 85 |
Oil (L) | 0.5 | 0.5 | 0.5 | 0.5 | 1.5 | 2 | 2 | 5 | 5 | 7 | 7 |
Steam allowable pressurembar | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 |
Steam removal rate(Kg/h) | 0.15 | 0.3 | 0.3 | 0.4 | 0.6 | 1 | 1.6 | 2.5 | 4 | 4.8 | 5 |
Air intake thread(inch) | Rp1/2” | Rp1/2” | Rp1/2” | Rp1/2” | Rp11/4” | Rp11/4” | Rp11/4” | Rp2” | Rp2” | Rp2” | Rp2” |
Motor power (kW) | 0.37// 0.37 | 0.75/ 0.9 | 0.75/ 0.9 | 0.75/ 0.9 | 1.5 | 2.2 | 3 | 4 | 4.5 | 5.5 | 7.5 |
Motor speed (rpm) | 1440 | 2880 | 2880 | 2880 | 1440 | 1440 | 1440 | 1440 | 1440 | 1440 | 1440 |
Weight (Kg) | 17 | 17 | 18 | 19 | 48 | 58 | 72 | 157 | 157 | 195 | 211 |
size(cm) | 4846.5*23.2*22 | 4846.5*23.2*22 | 4847.3 *23.2*22 | 4847.3 *23.2*22 | 65*30 *28 | 65*43 *29.5 | 72*43 *29.5 | 85.5*49.5*43.5 | 85.5*49.5 *43.5 | 98*56 *44 | 101*56 *44 |
