Hi Alexander. Can we add the oil while the vacuum is still running? If there's a minor oil leak and the oil drops to a lower than optimal level, do we have to turn off the vacuum (and thus having to turn off the mass spec) to add more oil in? There is hot vapor coming out when we open the cap when the vacuum is still running, and the noise gets louder. What is the risk/harm if we add the oil into the oil tank when the vacuum is still running? Thank you!
