Customer Reviews for 4 Cfm 1/4 Hp Air Conditioner Vacuum Pump With 3 Gallon Vacuum Chamber

The one measurement that is most needed but not listed is the actual internal dimensions of the drum.For information it measures 225mm in diameter and 270mm in depth.Also, you need to be aware the instructions say not to run it without sufficient oil in the pump; but it arrives with the oil at the minimum mark!You need the right High Speed Vacuum Oil to top it up (HFV 32) ... be worth ordering some at the same time.Seems to work fine but cannot fully check because I've had to order the oil !!It also arrives in parts with no instructions on assembly ... not difficult but I assume the "O" rings supplied fit inside the brass inlet port ... cannot see where else they could go.Be advised the item comes with continental style 2 pin plug pushed into a UK 3 pin adapter this means the item is unearthed and unfused!Personally not happy with this arrangement and cut off the supplied plug and replaced with a standard UK plug fused at 5A.Other than that very happy with the unit, works perfectly.

Pump fairly quiet, low vibration and very effective. Very adequate for 11 litre chamber. Pumps chamber down quickly, about a minute to about 0.05 bar (95% air removed). To reach lowest pressures then takes about another 2 minutes with no measurable improvement beyond 5 minutes. Low pressure boils off water at room temperature, very interesting to watch (happens about 0.02 bar). Once pumped down the chamber holds vacuum well with pump turned off and isolating tap turned., no noticeable change (with empty chamber) after 24 hours. Chamber holds several spools of plastic if you want to dry (or keep dry) 3d printer filament, especially pesky nylon which is a pain to keep very dry. As with all vacuum pumps their internal oil absorbs moisture. This one has a nice big window so you can see the state of its oil. The pressure gauge is basic but seems to work well. Note that it measures the difference between chamber and atmospheric pressure, you get small changes with the weather, noticeable when monitoring very low chamber pressures.

Yea decent chambers and lump that comes with it not to bad either

F_ den Preis einfach super.Kann ich nur weiter empfehlen.

kann diese Firma allen nur Empfehlen schnelle Lieferung absolut Super alles Ok.

Excellent product and great delivery

Funcionamiento perfecto. Hay que apretar bien las abrazaderas de los tubos para que no pierda aire por las juntas.

Fa il suo lavoro. Lo uso per lavori con resina epossidica e si comporta davvero bene. Immagino ci siano altri prodotti sicuramente migliori ma a questo prezzo che volete di pi?

Conforme la photo parfait

Funciona muy bien, por el precio es espectacular le tube que hechar un poco de aceite, estoy muy contento, la uso para modelismo y va perfecta