Re: Vacuum pump and moisture
Those who believe no.2 do not understand vacuum. With moisture there can be no vacuum.
Vacuum boils moisture in accordance with steam tables.
Re: Vacuum pump and moisture
One important factor is to use the correct size vacuum pump always change the oil in the pump on a regular basis,triple vac as much as possible and remember to always use a torr gauge myself I prefer the old fashioned type I just don't trust the electronic type.
Re: Vacuum pump and moisture
A vac pump is the perfect tool to remove moisture from a system. Although using a vac pump, you can actually freeze the moisture if you vac too fast, then it will not be removed by the pump.
This is where "triple vacuuming" is useful.
To triple vac you evacuate the system, charge system with dry nitrogen, change vac pump oil and repeat. Untill you pull a vacuum under 500microns and does not raise significantly.