In the lab, the temperature is often around 30 degrees Celsius and lately, the pre-vacuum pump has often stopped working. I wondered if this high temperature could cause the constant (daily) shutdown. The conditions are temporary, we will soon be back to 24 degrees, but until then I would like to know if we can use it or not.
For a vacuum pump, 30°C is not a challenging environment. Internal operating temperatures of the pump are usually far higher, ~ +80°C.
Suggested things to check - in likely order:
1. Airflow round the pump. Lab may be +30°C but if the pump is under the bench, behind a box, under a package of lab supplies, and sucking dust into the motor ... the acutual pump operating temperature is MUCH higher.
2. If it is an oil pump - has the oil been changed and is there sufficient oil present? "normal" oil colour is a clear golden colour - a good lager. If darker, change the oil!
3. other things are far less likely, such as power dropping to minimum of the RMS supply to the pump.
Hope this helps.
Rob
Thank you for your answer, it helped a lot. We changed the oil regularly, this cannot be the problem. In this case, we need a general service I guess.
Rob Darrington I agree with you, i wanted to also state that I have worked in a little above 30oC with no problem at all. Dalma Radványi I will suggest you check the pump oil level if you haven't done so in a while ...could be the culprit
If the pump is shutting down, it sounds more like an issue with the motor rather than the pump. Many motors have over temperature switches. Check for obstruction of any air vents on the motor that might be causing an over temperature in the motor.
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