Brand：Best Value Vacs
Single-stage vacuums pump exhaust into a chamber in the pump, which separates the oil from the pumped gas. Then, the oil is returned and the gas is exhausted. When evacuation exceeds 5 minutes these solvents begin to vaporize and then re-condense in the vacuum pump reservoir. Once enough solvent re-condenses in the pump displacing the oil the plastic internal components may begin to warp, melt or seize. The use of a cold trap will condense the vapors prior to making their way to the vacuum pump preventing pump damage due to excessive use. Furthermore, Minwax Wood Hardener is not to be used with any vacuum pumps, EVER. (A seized motor will result within the first use.) To prevent these issues from happening to your process, change the Oil after each vacuum pump use, Even if the use time is only 5min.
