|Modular F.R.L.
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Why do bubbles come out from the element in the oil passage of an AL series lubricator?
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If the pressure in the bowl is lower than the outlet pressure, the flow is reversed and bubbles are generated at the end of the oil passage (element part).
Possible causes of low bowl pressure are as follows. ① The IN-OUT are reversely connected. ② There is leakage from the bowl O-ring. ③ There is leakage from the lubrication plug O-ring. Take appropriate measures.
For AL30-A to AL60-A series lubricators, when the lubrication plug is opened under the pressure of the lubricator, air bubbles may be generated at the end of the oil passage (sometimes they are not). This is also caused by the bowl’s internal pressure being lower than the outlet pressure.
