Robinair (15500) VacuMaster Economy Vacuum Pump - 2-Stage, 5 CFM , Red

Because Robin air is American made and I don't trust Chinese crap, I bought this instead of a Chinese made 12 CFM 1 horse power vacuum pump for the same price. I was disappointed to find a made in China sticker on the bottom of it.

Benjamin Wu

| Dec 05, 2021

While this pump performs as expected, be aware that if even the tiniest component fails, you will be forced to discard the pump due to a lack of replacement parts. br>br>I purchased this pump and a 15310 single stage pump, both of which failed after about 100 hours or less of use due to the plastic blades, which are easy to remove but can't be replaced. I now have two pumps, both of which are relatively new and ineffective.

Alia Gould

| Aug 12, 2021

The vacuum did not work well right out of the box. The item was in good condition when it arrived. Provided oil was used to fill the container. Connected the CPS VG200 vacuum gauge to the inlet and powered it up. Attained a score of 27 out of a possible thirty-seven. In less than a minute, Hg and only 27. After 30 minutes, you get a score of 5. It's not a good idea to work in an air conditioning system.

Mordechai Pham

| Dec 10, 2021

I was surprised to receive a unit with oil in the pump a third of the way down the window below the fill line, and the detachable extension cord already plugged into the pump, with the remainder of the cord wrapped under the handle instead of being placed on top of styrofoam packaging in its slot. It appears to be a repackaged item, despite the fact that I paid for a new one. I'm going to return it. Surprisingly, it arrived in its original packaging and was shipped directly from Robinair.

Jeffery Anthony

| Dec 08, 2021

Pump is fantastic. If your hose has a schraeder valve, you might need an adapter if you're using automotive R134 gauges. Several people have complained that the included adapter does not have a valve depressor for the ACME size, but it does for the older R12 size, and that it fills your work area with clouds of smoke, which it will if you overfill it. READ THE INSTRUCTIONS BEFORE GOING ANY FURTHER. Also, do not pour oil into the exhaust port, which is the large red knob labeled OIL. (Yes, this is bass ackwards) This is a fantastic pump; it quickly reduces vacuum, and I was reading maximum vacuum for my elevation. It was ready to add a small amount of oil after I had run it for 24 hours straight. It gets hot, but that's to be expected. Also, the noise level is about what you'd expect from an oil-lubbed compressor, which is significantly lower. If you're looking for a pump in this price range, this is the one to go with.

Emmalynn Golden

| Mar 06, 2021

My old Robinair 15000 weighs about 40 pounds and walks around a lot while pumping, which I despise. This 15500 is extremely light and runs smoothly with no walk. If the Operating Manual wasn't so bad, I'd give it a five-star rating. Although the manual shows all of the external service parts, it never explains how the Exhaust Fitting works. Some users believe it's a plug for filling up the oil tank. Then there's a section that explains how to properly shut off the pump in three or more steps, but it never says when to turn off the power switch. br>br>Many users had expressed their dissatisfaction with the Operating Manual. I propose that the company demote those who are in charge of the Manual. br>br>Created: br>br>Revise: br>br>Revise: I can confirm that the pump does a great job after using it on three mini split system installations: There is no use of oil; Even though I only changed oil once during a month working on three units installation, it pulled down to 80 microns in less than 15 minutes on a tight connection using copper pipe instead of rubber hose. br>br>It just has a terrible, illegible User Manual.

Kyrie Patton

| Jan 06, 2021

Despite the fact that it is made in China, this pump is excellent. It's for this reason that it's called Robinson. Follow the directions in the manual and warm up and cool down properly. It will work flawlessly if you follow the steps in the procedure. Although I can smell the oil from the top, it does not emit any oil vapor, as some claim. The only flaw I can find is that the manual instructs you to "remove and discard the exhaust plug from the exhaust fitting. " My exhaust filter had no plug inside it, but an inexperienced person might read that and decide to remove the entire exhaust filter and discard it. This is a possibility. If they did that, it would undoubtedly emit oil vapor. Anyway, with just a vacuum hose connected to my micron gauge, this little guy pumped down to 20 microns in no time. This is fantastic. When turned off, it doesn't hold vacuum, but that's what my Appion core removal tool is for. Before I turn off the pump, I need to disconnect the system from it.

Cara Daniel

| Mar 20, 2021

Instead of going with a cheaper model with similar specs, I went with a brand name. I've never had a pump before, but if you keep your car long enough, it will require a new compressor. This pump (including Freon and oil) is more expensive than one pump and refill. Setup was simple, quiet, and the vacuum pulled well. Because my gauges aren't the best, I didn't check the final vacuum, but the needle was essentially pegged at the highest vacuum level. The following was done during the repair: automobiles new compressor, all new seals on all components, complete flush on what was left, new suction/discharge hose, and new receiver drier). After an hour of sitting with no change in vacuum, add enough R134a to run the compressor and charge the system fully. Despite the new parts (all AC Delco), the problem persists. so twice what I could have paid) plus the tools I didn't have (flush kit, flush, this pump) cost half of what a dealer would have charged to simply replace the compressor. I replaced the pump oil after each use - After 45 minutes of use, the color changed from clear to yellow. Changes are simple to make; simply follow the provided instructions. This is a low-cost, low-maintenance option. Because I've only used it once, I can't comment on its durability. This pump is a lot quieter than the last one I borrowed.

Melissa Salazar

| Aug 10, 2021