Note for Vacuum Pump Maintenance on Vacuum Package Machine

Vacuum packaging is not actually completely vacuum,the vacuum degree is usually 600-1333Pa in the packed container.

Vacuum pump is the main but core components for packaging machine. The vacuum pump’s quality directly determines the efficiency of vacuum packaging machine. As the core of the vacuum packaging machine,how should we maintain it ? Below are our brief suggestion:

1) Vacuum pump oil: Adopted vacuum pump oil should be in line with SH0528-92 standard. When ambient temperature is between 0 ~ 10 ℃, use oil meeting ISO-VG32 viscosity grade. When ambient temperature between 10 ℃ ~ 40 ℃, with ISO-VG100 viscosity grade. When the vacuum pump is running, the oil level must be kept height at 1/2 to 3/4 of oil window. Check the oil level and oil contamination frequently (recommended once a week).

2)Replace the exhaust filter: When the pump temperature is significantly increased, motor current reached or exceeded the rated one, the pump exhaust port with soot generated, please check if the exhaust filter is blocked.yes,please replace it. Users can install a discharge pressure gauge at pump oil supply port to test if the filter is clogged. If the pressure exceeds 0.6bar (gauge pressure), the exhaust filter should be replaced.

3) The replacement of vacuum pump oil: the oil should be replaced instantly when the oil was polluted and turned black, emulsified or thickened. Oil filter should be replaced simultaneously. And clean the pump before adding new is the clean and oil change steps:
a) stop the pump and discharge the heated oil;
b) spin on the oil plug, run 5-10 seconds; exhaust the oil;
c) infuse the cleaning oil (32# general mechanical oil), oil level reaches the height of 3/4 at oil window;
d) run the pump with 5-10 minutes;
e) stop the pump and exhaust the oil;
f) if the exhausted oil was relatively turbid and failed to meet the requirements, repeat step C&D, until the exhausted oil was transparent;
g) after that, spin on the oil plug to run 5-10 seconds; the oil is exhausted;
h) then infuse he new oil.

4) Cleaning: Suction filter should be kept clean to avoid a reduction of suction speed.

5) Storage: If the vacuum pump would not been run for a long time, the oil should be exhausted and keep the pump clean, then infuse the prescribed new oil and place it in dry enviroment. Ensure the pump carry no oil while in transportation.

6) if you need new pump for your package machine, please feel free to contact us by email:


please click rotary vane vacuum pump to know about the pump sepcification.

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