How to choose between a vacuum pump without oil and a lubricated vacuum pump?
The lubrication of the vacuum pump is another aspect that will influence your choice. Whether you need to lubricate a vacuum pump or not plays a role in the maintenance level of the machine.
Lubricated vacuum pumps are more resilient and efficient, however they require regular maintenance, approximately every 12 hours. It is also advisable to use a cold trap, as the oil tends to condense steam and lower the pump’s capacity. This device, installed at the pump inlet, prevents oil vapor from rising above the vacuum. If, however, you do not use a cold trap, we recommend that you regularly inspect the color of the oil used to lubricate the vacuum pump. Another disadvantage of lubricated vacuum pumps is that they cannot be used in certain industrial sectors such as the food industry because the oil can contaminate the food.
Dry vacuum pumps are vacuum pumps without oil. As such, there is no risk of product contamination by the lubricating media. Dry vacuum pumps are therefore particularly recommended if you work in the agri-food industry. These vacuum pumps are however more sensitive to moisture, and as there is no cooling liquid dry vacuum pumps are more sensitive to high temperatures.