Reasons for Common Malfunctions of Vacuum Pumps

Dongguan Punok Vacuum Technology Co., Ltd. is a professional manufacturer of vacuum equipment that integrates research and development, manufacturing, and sales. It is also a professional service provider for repairing imported vacuum pumps. Punok adopts the German vacuum pump production process,100% use German production equipment to professionally produce vacuum pump accessories and provide vacuum pump maintenance services.

Common problems with vacuum pumps in use:

1. Decreased vacuum degree (aging of seals, cracking or detachment of exhaust valves)

2. Fuel injection (too much fuel or oil baffle falling off)

3. Oil leakage (oil seal wear, O-ring, gasket damage)

4. Difficulty starting (worn oil pump or loose belt)

5. Air appears in the system when the pump is stopped (seal valve damaged)

The aging of parts in vacuum pumps can lead to various problems. Vacuum pump maintenance is not only a simple replacement of parts, but also involves high-precision and difficult repair processes such as vacuum pump rotors, blades, and shaft positions. It is very important to ensure that the parts are installed accurately and in place. These factors determine the prerequisite for the normal operation of vacuum pumps after maintenance, so choosing a good vacuum pump maintenance manufacturer is crucial. The vacuum pump maintenance plan and after-sales service provided by Dongguan Punok Vacuum Technology Co., Ltd. ensure that vacuum pump problems are improved.

After long-term use, the vacuum pump may encounter the following problems:

1. The exhaust port of the vacuum pump is smoking

2. Vacuum pump fuel injection and oil leakage

3. The vacuum pump has loud noise

4. Decreased vacuum degree

5. High temperature phenomenon generated by vacuum pump

If the vacuum pump produces the above symptoms, Punok Vacuum Technology does not recommend the manufacturer to disassemble and handle it on their own. They hope to find a professional repair company to repair it. But if the user unit has maintenance capabilities and wants to reduce costs, they can do some maintenance work themselves.

Reasons for Common Malfunctions of Vacuum Pumps：

1. The exhaust port is smoking, it must be due to a clogged exhaust filter. The vacuum pump exhaust filter is used to separate gas and oil, which we call oil mist. Under normal circumstances, after the oil mist passes through the exhaust filter, the gas is discharged and the oil is filtered out for reuse. If the exhaust filter is clogged and the gas cannot be discharged, the seal will be pushed open, and the oil will be directly discharged into the atmosphere without being filtered by the exhaust filter.

There are three main reasons for this, one is that the exhaust filter has not been replaced for a long time, and the vacuum pump oil has not been replaced, which means that maintenance is not timely.

The second point is to use inferior exhaust filters, which can easily cause blockages in the exhaust filters.

The third point is to use inferior vacuum pump oil. We suggest that the vacuum pump must use imported original oil, and if it is a substitute, it must also be imported and verified. Replacing vacuum pump oil will not withstand high temperatures, causing carbonization of the pump oil and direct blockage of the vacuum pump exhaust filter by carbon particles, which will directly damage the service life of the vacuum pump. Punok Vacuum Technology requires all users to pay attention.

2. The vacuum pump is spraying oil and leaking oil. Similar to the principle mentioned above, it may be caused by the use of unqualified vacuum pump oil blocking the exhaust filter. When the pressure inside the pump increases, oil leakage can occur.

3. The vacuum pump produces loud noise. When the oil circuit inside the pump is blocked and there is a lack of oil, it will produce noise and high temperature. At this point, a major overhaul is needed.

4. Vacuum degree decrease: blockage or leakage of vacuum system or intake pipeline, contamination or deterioration of vacuum pump oil, blockage of exhaust filter, blockage of intake filter or intake filter screen.

5. There are several reasons for the high temperature phenomenon of vacuum pumps, including high ambient temperature, high intake temperature, partially clogged exhaust filter, poor air circulation, insufficient lubricating oil, and deteriorated lubricating oil. Strengthen cooling and ventilation, cooler.

The solution is to replace the exhaust filter to enhance cooling, ventilation, cooler, add vacuum pump oil, clean the vacuum pump, replace the vacuum pump, replace the exhaust filter and lubricating oil.

Reasons for Common Malfunctions of Vacuum Pumps