Causes of active trip of vacuum pump

This paper analyzes the causes of the active trip of the vacuum pump. Vacuum pump refers to the equipment or equipment that uses mechanical, physical, chemical or physical-chemical methods to extract air from the container to obtain vacuum. In a word, vacuum pump is a kind of equipment to improve, generate and maintain vacuum in a closed space by various methods. If the vacuum pump encounters an active trip condition. 

First of all, we should understand the cause of the trip condition, and then deal with the vacuum pump trip fault, and then clean up the trip problem. The vacuum pump manufacturer explains the cause of the vacuum pump trip for you. The vacuum pump is stopped for a long time. If the vacuum pump is stopped for a long time, the motor load will lead to temporary high current. At the moment, close the air inlet of the vacuum pump to heat the pump body.

Motor load. The current of vacuum pump motor is too high at the moment. If the current exceeds the current set by the electric control box, the vacuum pump will trip and trip automatically. The vacuum pump wholesale prompts that it is the normal phenomenon of the vacuum pump at the moment. The upper limit of current maintenance can be adjusted to deal with the tripping phenomenon. The vacuum pump can be disassembled to check whether there is any internal fault.

The vacuum pump motor is connected to the two-phase power supply. If the three-phase power supply is not enabled, the three-phase power supply of the vacuum pump can be connected. If the operation time is about 10 hours and the tripping and tripping conditions occur, it is still necessary to adjust the upper limit of over-current. The above materials are supplied and shared by horsepower electromechanical manufacturers.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Energy saving corrosion resistant vacuum pump

Many of the corrosion-resistant vacuum pumps rely on pressure to work better. Therefore, proper decompression is beneficial. How do we look at the discharge pressure of energy-saving vacuum pumps? 

The exhaust pressure has a great influence on the suction capacity and shaft power consumption of energy-saving vacuum pump. When the energy-saving vacuum pump system is running, if the exhaust pressure is higher, the suction volume will be smaller, and the power consumption of the corresponding shaft will be greater. On the contrary, when the exhaust pressure of the system is smaller, the suction capacity of the energy-saving vacuum pump will be greater, and the power consumption of the corresponding shaft will be smaller.

Therefore, in the actual operation and maintenance of corrosion-resistant vacuum pump, we should pay attention to the real-time observation of the exhaust pressure data of the vacuum pump system. When there is abnormal exhaust pressure data, the corresponding measures should be taken immediately to update and transform the whole vacuum system, so that the exhaust pressure of the vacuum system can be maintained in the national standard or recommended by the manufacturer for a long time, so as to ensure that the energy-saving vacuum pump is always in place Under the optimal working conditions, the overall operation mechanical efficiency of water ring vacuum pump can be effectively improved.

Rotary Vane Vacuum Pump In Industrial Dust Collection

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

Cooling system of vacuum pump unit

The influence of cooling system temperature on the function of vacuum pump unit. In summer, the closed water temperature can reach 35 ℃. Therefore, in practice, it is difficult to ensure that the sealing water of vacuum pump has a supercooling degree of 4.2 ℃. With the sealing water temperature close to full, its pumping ability is also declining, until full vaporization and loss of operational ability. 

The working pressure of the vacuum pump and the pressure of the condenser is a dynamic balance process. No matter whether the circulating water temperature is concave or convex, the suction pressure of the vacuum pump must be lower than that of the condenser before the non agglomerated gas in the condenser can be pumped out. Therefore, it is necessary for the seal water temperature of the vacuum pump to be lower than the fullness temperature corresponding to the exhaust pressure.

The vacuum of No.3 unit of a company is in a state of decline, which is due to the failure to change the water in the gas water separator in time, resulting in the vaporization of sealing water in the vacuum pump. The experiment was carried out on vacuum pump a of unit 2 on July 30. The temperature of separator was 16.2 ℃ after pump a participated in 16 ℃ cold water. The temperature rose to 24.5 ℃ after starting pump A. with the increase of temperature, the vacuum decreased. When the water temperature was 30 ℃, the vacuum went about 1kPa, and the vacuum pump current increased about 0.8 * *. When the working water temperature drops by 1 ℃, the vacuum travels about 0.19kpa. It can be seen from this experiment that it is an important way to ensure the vacuum of the vacuum unit to ensure the lower temperature of the sealing water of the vacuum pump in summer.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump

Precautions for 2x rotary vane vacuum pump

(1) The vacuum degree refers to the pressure of the remaining gas in the pumped vessel. The partial pressure is the factory standard, and the total pressure is the auxiliary standard. The thermocouple measures the total pressure of all kinds of steam and permanent gas, while the Maxwell's meter can only measure the partial pressure of the permanent gas, so the values of the two meters are different.

(2) The pumping speed is calculated according to the geometric dimensions. At atmospheric pressure J, the actual pumping speed is basically consistent with the geometric pumping speed. At various pressures, the pumping speed decreases to a certain extent. The relationship between pumping speed and pressure is shown in Fig. 4.

(3) Temperature rise refers to the temperature difference between the oil at the exhaust valve and the room temperature after the pump temperature is stable.

(4) 2X rotary vane vacuum pump model: column 2k-1, 2 represents double-stage pump, K represents rotary vane vacuum pump, and the number behind a horizontal line represents pumping speed per second.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

System operation flow of water ring vacuum pump

 Seal water pump is to supply satisfactory sealing cooling water for vacuum pump. Under normal conditions, the water volume is 200L / min, and the temperature is 10 ~ 30 ℃. The circulation process is: seal water pump → seal water cooler → vacuum pump → gas water separator → seal water pump (as shown in Figure 1). The water storage in the gas water separator and the whole system is 2m3, and the make-up water and water consumption in the normal operation of the unit are less. 

In the suction system of vacuum unit, there are two air suction ports for air extraction. When the vacuum pump is just started, the air in the vacuum system of the condenser enters the vacuum pump through the bypass of the air extractor, and then enters the steam water separator along with the working water. When the negative pressure at the inlet of the vacuum pump reaches 13.3kpa, the aspirator is actually started and put into operation. At this moment, the bypass valve of the vacuum pump is closed actively (as shown in Fig. 3). Under normal conditions, the negative pressure in the vacuum system of the condenser can reach the required vacuum value after 30min operation of the air extractor.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Selection of lining materials for corrosion resistant vacuum pump

Corrosion resistant vacuum pump is a kind of self-priming pump with liquid corrosion resistance and long service life. Its material must be special. The first characteristic is corrosion resistance. Next, we introduce the selection of lining materials for corrosion-resistant pump 

It is necessary to satisfy the technical parameters of flow, head, pressure, temperature, NPSH and other technical parameters of corrosion-resistant vacuum pump products. It is necessary to satisfy the requirements of medium characteristics. F46, as the material of equipment fabric, absorbs a few touch substances in the process of application because there is a small space between F4 macromolecules, which is dispersed and relocated among them. The absorption image is usually shown by a small amount of weight gain and color change, and the amount of absorption increases with the increase of working pressure and touch time. In addition, it can be solved by lowering the temperature, shaking the scale and improving the planning.

In addition, the volume of pores between macromolecules increases with the increase of temperature, and liquid absorption and infiltration will also be added. Thus, the circulation effect at high temperature will cause the liquid absorbed by F4 to expand or transpiration, resulting in pores, and finally form damage. For example, after 34 months of operation, small spots appear on the surface of the pipeline of trichlorosilane rectification equipment, which will be carried out continuously in small shifts for one year. Therefore, this is the demand for F4 sheet as chemical anti-corrosion fabric. The lower the porosity content, the better. The specific gravity is necessary to be greater than 2.18, and the thickness is also required, usually 1.5 ~ 3 mm. The planned service life of the pump is usually at least 10 years. When determining the type and manufacturer of the pump, we should sum up and consider the pump's function, energy consumption, reliability, quotation and manufacturing standards.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

Influence of pipeline on the performance of rotary vane vacuum pump

For users, the diameter of the suction pipe should be the same as the diameter of the pump port, and the length should be as short as possible. Too many elbows and too long pipeline will not only affect the pumping speed, but also affect the power consumption. Exhaust pipe is also the same, exhaust pipe is the most easily ignored by users, too long pipe will increase exhaust resistance, increase gas backflow, affect pumping speed, and increase power consumption. 

The oil mist eliminator of rotary vane vacuum pump developed by us, which is connected to the exhaust port of the pump, can meet the requirements of gas indoor emission. Of course, the oil mist eliminator will inevitably lose part of the power. After careful design and repeated improvement, not only the exhaust resistance is small, but also the effect is very good, and the increase of power is not obvious. It should be noted that the core of the oil mist eliminator must be replaced regularly according to the use condition.

Vacuum Pump For Negative Pressure Evaporation

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

How to optimize the selection of dry screw vacuum pump

Different types of dry vacuum pump, we are constantly looking forward to reducing its physical size. However, this is in contradiction with the pumping speed of the vacuum pump, which is proportional to the volume of the vacuum pump. Small physical size means low volume. Of course, another important factor affecting the pumping speed of vacuum pump is speed. In order to make the suction speed of small vacuum pump different from that of large vacuum pump, it is necessary to improve the speed. There are two ways to change the speed of vacuum pump, one is to change the frequency of power supply, even with frequency converter; the other is to change the proportion of gearbox. Among them, the advantage of using frequency converter is that it can provide a closed-loop control, but it is easy to cause torque loss under heavy load. Changing the gear ratio of the gearbox is a very economical way, of course, it can only provide a single speed, can not be controlled. 

Today, you can see that there are so many different designs for dry vacuum pumps, each with its own characteristics and advantages and disadvantages. In history, the use of capital has been an important factor influencing people's choice of vacuum pump. More and more vacuum pump users realize that the stability of vacuum pump should also be considered. Due to the wrong solution of the vacuum pump, the efficiency of the machine is reduced, which affects the consumption and delivery of the wafer, resulting in the formation of wafer scrap and processing damage of other parts. As the screw design adopts a single-stage design, the number of parts used can be reduced by up to 60% compared with multi-stage pumps (such as ball gap, claw and combination). This is a big advantage for stability and future maintenance costs.

In general, if the user thinks the power consumption is the most important for him, then choosing an internal compression screw may be a good choice, and the nitrogen content is the least important for him. However, in general, the requirements for tail gas disposal are more and more severe, so it is particularly important to reduce the amount of nitrogen used in the future. If you want to dispose of a variety of semiconductor processes without changing them with a simple inventory control pump, external compression screws are the best choice.

Rotary Screw Vacuum Pump Performance And Structural Characteristics

Vacuum Pump In Farm Vehicle Power System

Vacuum Unit Equipment In Light Oil Metallurgic Requirements

Environmental protection water ring vacuum unit

The environmental protection water ring vacuum unit is designed and optimized according to the requirements of modern enterprises for environment and environmental protection, integrating the characteristics of various industries. The manufacturing unit is composed of water ring vacuum pump, waterway system, vacuum system, cooling system, silencing system and control system. It is mainly designed and manufactured according to the specific conditions of customers 

1. Ensure that the gas and liquid with pollution are concentrated and will not leak, and truly achieve zero pollution

2. Low noise, the use of noise abatement facilities, will not cause noise pollution, especially suitable for the working environment of man and machine together

Application: daily chemical, medical (especially dental), food, pharmaceutical, electronic, laboratory.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

Heater and heating power of oil diffusion pump

Compared with the diffusion radiation pump, the pumping capacity and maximum outlet pressure of the oil diffusion pump are much lower, so the heating power of the pump is also lower. The boiler diameter of oil diffusion pump is usually equal to (less than) the diameter of pump port. The heat load of oil diffusion pump boiler with pumping speed greater than 500L / s shall not exceed 2-2.5w/cm2 

In the oil diffusion pump, the power consumed by oil evaporation is usually 60% - 70% of the total power, and other parts are used to compensate for various heat losses. In the diffusion pump, the heat loss mainly includes the following aspects: the heat conduction from the heater surface through the boiler wall to the outside (20% - 25%); the heat transfer from the hot boiler to the cold pump body along the pump wall (10% - 15%); the radiation from the guide pipe surface to the pump wall and the heat transfer from the gas and steam mixture from the guide pipe to the pump wall (5% - 10%). If the pump results are good, the heat loss can be reduced to 10% - 15% of the total power.

For example, the heat loss can be obviously reduced if the heat insulation of pump heater and boiler is stopped. Assuming that there is no air layer between the bottom of the boiler and the heater, the heating power can be well applied.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump

Screw vacuum pump failure

Screw vacuum pump, in the era of rapid development of vacuum, is widely used, especially in chemical, pharmaceutical, semiconductor and other enterprises. 

The influence of screw vacuum pump air compressor oil consumption meeting on the enterprise: too little screw air compressor oil will increase the wear of air compressor accessories, increase the maintenance cost of air compressor, too much screw air compressor oil, oil will overflow, at the same time, the compressed air oil content will increase, screw vacuum pump air compressor oil consumption is too much, generally the air compressor failure.

There is too much oil in the valve chamber, which may be due to the wear of valve guide, piston ring and cylinder sleeve, and the damage of sealing ring of turbocharger, which will lead to excessive oil consumption of air compressor and oil leakage of air compressor; oil leakage fault of air compressor is generally the main reason for excessive oil consumption of air compressor. Maintenance personnel of air compressor need to find out the oil leakage place as soon as possible and carry out maintenance as required.

It should be emphasized that oil leakage from the air compressor will lead to oil in the machine and other places. In order to reduce pollution, special cleaning agent should be used to clean the air compressor during maintenance, and there is too much oil in the engine. The maintenance personnel of air compressor should eliminate the surplus oil, find out the source of these oil, and use appropriate oil in the engine, and do not add too much oil leakage.


Air Ejector Structure And Working Principle

Rotary Vane Vacuum Pump For Sprinkling Irrigation On Sloping Land

Water Ring Vacuum Pump For Distilled Water Recovery

What are the characteristics and applications of dry vacuum pump

Dry vacuum pump makes the working volume oil-free, so it brings many benefits. First of all, it enhances the pump's reliability. Dry pumps are not affected by water vapor or dust particles as oil seal pumps, so they are more durable and require less maintenance. Reducing oil consumption also means reducing the cost of serious disposal of oil. The use of dry vacuum pumps also reduces the possible contamination to a smaller level, which may be present in the oil - affecting the performance of the pump, or in some extreme conditions. 

At present, most of the dry vacuum pumps used in the vacuum industry use oil, water or other polymers as the working medium of the pump, which plays a variety of functions such as cooling, sealing and smoothing in the pump. With the development of science and technology and the expansion of vacuum application scope, the original dry vacuum pump and its pumping system present two urgent problems: one is the backflow of the working medium of the pump pollutes the pumped container, which affects the quality and quantity of products in many cases, and increases the maintenance cost of equipment. Secondly, due to the reaction material in some process, the medium in the vacuum pump is seriously degenerated, so that the pump can not work normally.

As for the common oil-free vacuum system, although the oil sealed vacuum pump and the accessories such as cold trap or adsorption trap can be used to avoid backflow, it can not completely deal with the problem and make the system complex. The application of appropriate type of dry vacuum pump can achieve the ideal application effect.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

Vacuum Pump Rust Removal Method

If the vacuum pump is not used for a long time, the water in the pump chamber should be released, and the pump chamber should be wiped with a dry cloth. If the interior of the pump chamber is not dry, the pump chamber will rust over a long period of time. The following vacuum pump manufacturers introduce several rust removal methods.dry-vacuum-pump-and-oil-sealed-vacuum-pump

1. Manual derusting
Such measures are cost-effective and insurable. Artificial rust removal, we can use the tools we have at hand to remove rust, our artificial rust removal, do not need to use other chemical products to remove rust, so save some costs. Why is it insurance? Because if chemical rust remover is used to remove rust inside the vacuum pump chamber, the pump chamber will be damaged more or less.gas-transmission-vacuum-pump-types


2. Rust removal with rust remover
This method is very clean but damages the pump chamber.diffusion-vacuum-pump-types

rotary vane vacuum pump for sale

Rotary vane vacuum pump is a kind of varactor mechanical vacuum pump, which utilizes the rotating motion of the rotor and the vane sliding in the rotor slot to obtain vacuum. When the working fluid is used to lubricate and fill the dead gap of the pump chamber, separating the exhaust valve from the atmosphere, it is commonly known as the oil-sealed rotary vane vacuum pump.

When there is no working fluid, it is a dry rotary vane vacuum pump. In oil-sealed rotary vane vacuum pump, it is customarily called a rotary vane vacuum pump with belt drive in China, and a direct rotary vane vacuum pump with direct connection to motor or coupling is called a direct rotary vane vacuum pump.

In each pump, there are single and double stages. In single-stage pumps, the limit pressure and usage of pumps are different due to the different structure and parameters. Their common characteristics are simple structure, easy use, starting from atmospheric pressure, direct discharge of the atmosphere, small eccentric mass, simple maintenance, the limit pressure of two-stage pump is 6 *10-2~l *10-2 Pa, one single-stage pump can reach about 4 Pa, the other single-stage pump is about 50-200 Pa.

If you want to know more about our  vacuum pump products,  please leave a message or send us an email at contact@evpvacuum.com 
web:https://www.evpvacuum.com

Rotary vane vacuum pump troubleshooting method

Rotary vane vacuum pump is suitable for the extraction of dry or containing a small amount of condensable vapor gas, not suitable for the extraction of excessive oxygen, explosive, corrosive, the vacuum pump oil plays a chemical role and contains a large number of solid particles gas. In the operation of rotary vane pump, if the operation is not correct, it will lead to some faults, serious will also lead to its stop operation. Next, let me introduce to you some of its common faults and troubleshooting methods:

1, this rotary chip vacuum pump oil grades are different from the original ones. Different brands of pump oil, due to different saturated vapor pressure, the result will be different.

Exclusive method: select the correct vacuum pump oil according to the product type.

2. The gap between components in rotary vane vacuum pump is larger. This is a long drawn out air containing dust in the body, causing the clearance between the rotary vane and the stator to increase.

Troubleshooting: check whether the gap is too large and replace the new parts.

3, the oil circuit in the pump is blocked or not smooth, and the pump chamber does not maintain a certain amount of oil.

Troubleshooting: check whether the oil circuit is open and add the same type of vacuum pump oil.

4, the temperature of the gas being pumped may be too high.

Troubleshooting: reduce the temperature of the gas being pumped, or add a corresponding heat exchanger on the rotary vane vacuum pump.

5, the water vapor and impurities in the gas are too high to cause the rotary vacuum pump to emulsify or discolor.

Elimination method: Pump out the vacuum pump oil, replace the same type of pump oil, and set up a filter to ensure that the steam and impurities in the pumped gas do not enter the pump.

Water ring vacuum pump principle

Water-ring vacuum pump because of its simple structure, low manufacturing accuracy requirements, easy processing and other related characteristics by many manufacturers like, super-high performance and affordable prices make it stand out among the many types of vacuum pumps, the following mini-series for your popular science about water-ring vacuum pump structure and working principle Related introduction.

Brief introduction of structure and working principle of water ring vacuum pump
1. The working principle is that the gas enters the vacuum pump or compressor through the pipeline through the valve, and then discharges into the gas-water separator through the air-guide bend pipe, and discharges through the gas-water separator exhaust pipe.vacuum-system-in-heavy-steel-industry-application

2. Water-ring vacuum pump (abbreviated as water-ring pump) is a kind of coarse vacuum pump. The limit vacuum it can obtain is 2000-4000Pa, and the vacuum degree of the vacuum pump unit can reach 1-600Pa. Water ring pump can also be used as compressor, called water ring compressor, is a low-pressure compressor, its pressure range is 1 ~ 2 *105Pa meter pressure.

Roots vacuum pump rotor

Roots Vacuum Pump as a necessary supporting equipment in the unit, is more important in all respects, although the production of Roots Pump is a conventional product, but also in the deep processing of the product should be in place, for the rotor technology should also be further improved than the previous stage, only to ensure that the Roots Pump products Performance, in the use of the unit to show the proper performance, performance will play out the overall performance of the unit, conducive to supporting the production process of enterprises.

Increasing the technological improvement of Roots vacuum pump rotor is to improve the overall performance of the pump. As long as the quality of the main components is reliable, coupled with strict process requirements and assembly quality, the use of the pump is very consistent with the standards, there will be no abnormalities, in the normal production process can play a good role. Use to enhance the practicability of the unit. Therefore, the process is very important for the integrity of the pump, the times are progressing, the process should also be improved, only advanced technical ability to adapt to the development of products.

Roots vacuum pump is also tightly dependent on advanced technology to achieve today's success, only to refine the product, can have room to play, can effectively provide the enterprise with room for development, this is the product ductility, but also the most important part of the enterprise.molecular-pump-application-in-energy-saving-lamp-manufacturing-process

Oil return treatment of SK vacuum pump

SK vacuum pump as a commonly used modern vacuum equipment, usually when we are in use, often refueling lubrication, after a long time of use, some equipment will appear anti-oil situation, how should we deal with it?

1. The molecular weight of SK vacuum pump oil is large.Molecular_Pump

2, in order to reduce the ultimate pressure of the equipment, it is required that the saturated steam pressure of the vacuum unit oil at room temperature is low.

3. In order to make the equipment work under higher outlet pressure, the saturated vapor pressure of SK vacuum pump oil at boiling temperature should be as high as possible.

4. The thermal stability of SK vacuum pump oil will not be better when it contacts with the atmosphere. Freezing point and low temperature viscosity should be low.

Usually when SK vacuum pump is used, lubricating oil has a great influence on the limit pressure. In the diffusion vacuum unit with the same structure, the partial pressure of the pumped gas will also change with the pump oil. In the later stage, we should pay more attention to these points when refueling.

Working principle of water ring vacuum pump unit

For the corrosion-resistant water ring vacuum pump unit, we will actually use the Roots pump as the main pump in actual use, and then, we should pay attention to the water ring pump should be formed for the previous pump series.

Corrosion-resistant water-ring vacuum pump unit selected by the water ring pump to a large extent will actually become a front-end pump, in this respect, it is actually more advantageous than other vacuum pumps, because it can not only overcome a single water-ring pump operating time limit pressure difference (unit limit pressure) In fact, it will be higher than the limit pressure of the water ring pump in fact, that is, there will be a great deal of improvement, under a certain pressure on the drawback of a relatively low pumping rate, in this respect, we will actually note that it is to a great extent directly retained the Roots pump energy of the rapid operation, there is a relatively large amount of pumping. The advantages of speed.

Next, as far as the corrosion-resistant water-ring vacuum pump unit is concerned, it can actually be adapted to remove a large number of condensable steam, especially for the gas-filled oil seal mechanical vacuum pump to remove condensable steam capacity is not enough, or the use of solvents can actually make the pump oil deterioration, thus affecting The performance will be even more obvious when the vacuum system does not allow oil contamination.

As far as the corrosion-resistant water ring vacuum pump unit is concerned, when it is equipped with explosion-proof motor and its electrical appliances, to a large extent, it will directly comply with the corresponding safety rules, but also can extract flammable and explosive gases. In view of the above reasons, its application will be very extensive.

Maintenance of rotary vane vacuum pump unit

In terms of the maintenance of the rotary vane vacuum pump unit, the first point is to pay attention to the maintenance of the rotary vane vacuum pump unit cleaning, and the next thing is to pay attention to the prevention of debris into the pump equipment. And then the next thing you want to do is you want to keep the oil level; In the face of improper storage, water or other volatile substances into the pump equipment to affect the maximum vacuum, attention should be paid to replace the pump oil.

Then, on the oil change on the vacuum pump unit method, first of all, is to pay attention to go to the open pump running about 10 minutes, make oil loose some, then, that is, pay attention to the pump stop, this time should be pay attention to the oil drain Kong Fang oil, to open air inlet running a 1 ~ 2 minutes, in the midst of this, namely from inspiratory mouth slowly add a small amount of clean oil pump, this also is to actually change the pump cavity of remaining oil.

Followed by vacuum pump unit maintenance, should pay attention to can not be mixed with diesel or gasoline and other full with relatively large oil vapor pressure, at that time, namely can reduce its limit vacuum, unpick and wash of pump parts, typically with gauze polishing the test also is ok, there will be a metal debris, sand, mud or other hazardous substances must be clean, we should actually is also should pay attention to is to use gasoline to scrub, also can undertake assembly after drying.

In addition, if the pump needs to be disassembled and cleaned or overhauled, it is necessary to pay attention to the disassembly steps, so as to avoid damage to the parts.

Finally, as far as the vacuum pump unit is concerned, other objects should not be placed. In the following part, it is very important to pay attention to whether the belt is elastic enough, and it should be adjusted every half a year. Check if there is air leakage on the pipe joint of the vacuum pump unit, it should be stopped in time.