Houngan - 4-6-2013 at 02:21
Hi,
I have removed a freezer pump and have been using it as a vacuum pump.
It pulls an awesome vacuum of about 100 torr on the filtration setup I have.
I am concerned about the pump though, it makes a small popping sound when its pulling down which is fine because of the air its pulling through but it
will still do it a lower pressures.
Does anyone know what exactly is happening in it and should I be concerned?
Cheers, Houngan
Finnnicus - 4-6-2013 at 05:54
Totally normal. I am playing with one of my fridge compressors right now, and have noticed that sound alot, not sure what it is, but it doesn't break
anything when it happens.
Wizzard - 4-6-2013 at 06:24
Might be the oil becoming unhappy, or a slight air leak if it's multi-stage.
Try replacing the oil with better oil, rated for higher vacuum.
Houngan - 5-6-2013 at 01:44
Cheers, thanks for the reassurance.