For dry products such as rice and bacon, the vacuum pump oil can be changed once every 6-12 months.
For products with a little moisture, such as vegetables, fresh meat, the vacuum pump oil should be changed once every 3-6 months.
For products with more moisture, such as sauerkraut and kimchi, the vacuum pump oil should be changed once every 1-2 months.
One more attention: change oil when the machine is shut off but the vacuum pump is still warm.
