Robinair VacuMaster Single Stage Pump 115, 3 CFM

Nice, Brand name, Light duty pump. Used it 3 times already and found it to be more than adequate. Easily pulls the rated vacuum AS LONG AS YOU HAVE NO LEAKS. Follow proper repair and charging procedures to avoid poor results and shortening the pumps life. Due to the design of the a/c charge hose fittings, it's easy to have leaks that are hard to detect, which will make the pump look weak. Aside from a defective unit, this is probably the issue with a lot of the "won't pull the rated vacuum" reviews on here. Even though Robinair is a BIG name in the industry, I think this unit is priced fair for something made overseas for occasional use. I'm a Certified Master Technician and Instructor with 35 yrs experience and I researched and purchased this unit for home use. I use the more expensive Robinair equipment at work because they are more reliable in a shop environment. Quality control on products made outside the U S is always a problem, but so far so good. BTW, these units do get hot, make some strange noises at times and can give off a mist and smell. Perfectly normal, just means it's working correctly.

Excelente marca y muy buena calidad. De lo mejor. Ya llevo unos años con ella y ninguna falla.

To all that have given this brand of pump a bad review, I suggest that you read the manual again. There is a red cap that the manual says to remove to put the oil into. You get a big bottle but it doesn't take the whole bottle to fill the oil tank. You put in enough to get the oil just past the bottom of the view window and then as per the manual, turn the unit on. LET IT RUN A MINUTE. Then when the oil has heated up, add more oil to get it to the fill line. If you put in too much oil, it will give off more mist/smoke, and you may not get as much vacuum. If you didn't read the manual and follow the instructions, you only have yourself to blame. Get a sharpie and put the letter i on your forehead to remind yourself. Hooked it up and put in the correct amount of oil. It gave off a small bit of mist/smoke when starting up but as soon as I started to pull a vacuum that all went away. On my empty 5 gal vacuum chamber it easily pulled 30Hg of vacuum. Then when using it to stabilize some assortment of wood, it pulled all the air out and did a wonderful job. It's not quite as fast at the 2 stage, but at less than 1/2 the price, I am quite happy to wait the little bit more.

This model cost a little more than most but it works great in my vacuum chamber that I set up for stabilizing wood. So far I have used it three times for 12+hour long sessions with no problems. A little noisy but that is expected. Great machine up until now I was renting the free loaner from Oreillys that I considered just purchasing it since I already had it in hand but glad I didn't. The Robinair pulled more suction and just seemed better built.

Buena herramienta, excelente calidad cumple con su propósito