Please help, what is the role of the red bolt of the mixer reducer? Is it an exhaust valve or a breather valve?
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Reducer model reduction ratio nominal torque installation method manufacturer model power voltage rated current speed power factor efficiency protection level FAF87-15-13.1213.123000M4SEW Suzhou YB3-160L-4153803014710.8490.6IP55 The above are the parameters of the mixer. What does the red bolt do? There is a small exhaust valve on top, which should balance the box and outside atmospheric pressure, in my opinion. But after removing the exhaust valve, there is a small spring and valve head inside, which cannot be opened by blowing with the mouth. It takes at least dozens of KP to ventilate. I am confused whether this is an exhaust valve or a ventilation valve? If it is a breather valve, it is structurally blocked. If it is an exhaust valve, the reducer box needs a certain pressure to discharge the oil and gas inside. Aren't the reducer boxes all under normal pressure?
Just read the instructions. Also, if your photo is more comprehensive, you can see it more clearly. This photo is too partial. I guess it's not the oil drain/fill bolt.
The one on the top is the degassing cap, and the one in the middle is the minimum oil level observation hole. It’s all marked in the instructions for use.
There is no oil level window, and the accompanying information is very simple and has no corresponding instructions.
The upper one is the ventilation hole, and the lower one is the minimum oil level window.