ZENY 3,5CFM Single-Stage 5 Pa Rotary Vane Economy Vacuum Pump 3 CFM 1/4HP Air Conditioner Refrigerant HVAC Air Tool R410a 1/4" Flare Inlet Port, Blue
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- Inlet Port: 1/4" Flare, Warm note: 1)Pressure Scale:0~400psi, 0~140psi 2)Length of hose:1.2m Red:1/4''-1/4'' Yellow:1/4''-1/4'' Blue:1/4''-1/4'' Please make sure your manifold gauge is in accordance with this size. Any question in using, please contact seller first. *** A self-paying vacuum pump Adapter needed if inflet not suitable.
- High Efficiency and Low Noise, Heavy-duty Aluminum Alloy Casing, Oil Drain Plug Positioned at Bottom of Oil Reservoir,Internal High Volume Cooling Fan for Extended U
- Exhaust Port with Exhaust Cap, Direct Drive Motor Allowing Easy Starting Which is Maintenance Free
- Oil Sight Glass For Monitoring Oil Levels, ON/OFF Switch
- Non Slip Cushion Handle, Comes With a Bottle of Vacuum Oil
Specifications for this item
|Item Weight||11.70 pounds|
|Size||3.5CFM Vacuum Pump|
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Strong Copper Motor
Strong copper motor, stable operation. When the machine pumps vacuum, it ensures the stable operation of the machine and saves energy and electricity. Copper wire good motor, long-term durability, long-term work without burning machine
- High Efficiency and Low Noise
- Viewable oil window
- Copper suction port
- Supper bigger fan
- Shockproof base
ZENY All-copper Motor, Rotary Vane Vacuum Pump
Specifications & Features for ZENY Vacuum Pump
Overall Dimensions: 10.6'' x 4.6'' x 8.5 '' (L x W x H)
Heavy-duty Aluminum Alloy Casing
Internal High Volume Cooling Fan for Extended Use
Exhaust Port with Exhaust Cap
Oil Sight Glass For Monitoring Oil Levels
Non Slip Cushion Handle
Comes With a Bottle of Vacuum Oil
Warm Note: If pump heats up or fitting not suits, please contact seller in the first place, solution awaits. Please make sure your manifold gauge is in accordance with this size. Thanks.
- Visual fuel tank to prevent oil shortage and motor burnout
- High quality capacitor, fast start, anti-wave, ensure the stability of machine output
- Intelligent radiator: when something is stuck, it can protect itself and prevent it burning out
- Solenoid valve: automatic cut-off of power failure, effectively prevent gas reflux
- Oil Drain Plug Positioned at Bottom of Oil Reservoir
- Direct Drive Motor Allowing Easy Starting Which is Maintenance Free
Why Choose ZENY Vacuum Pump?
Built-In Thermal Protection
Built-in thermal protection, avoid burning machine, extent the machine's life.
Fast heat dissipation, increase the radiation window. Format heat dissipation window design, fast heat dissipation, effective protection of machine performance.
1 Stage Vacuum Pump
Shock-Proof and Wear-Resistant Base
ZENY vacuum pump base was made of composite rubber material, shock absorption and seismic resistance, extend machine life.
Four rubber bottoms increase product stability.
Wide range of applications: suitable for household air conditioning, automobile maintenance, vacuum packaging, refrigerator vacuum, Industry etc.
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The PROBLEM comes from the fact that this thing leaks oil terribly. I used it a couple times after I bought it in September, but by late October I was talking with ZENY's customer service department because of how much oil this thing was leaking. From the bottom of the unit as well as the side plate where it mounts horizontally. I found at least two different places it leaks from (there are likely more but I'd have to take it apart which would void the warranty!), have the photos to prove it, and I tried to get a warranty replacement. Of course their customer support group has gone 100% quiet without any resolution. I'm lodging a complaint with Amazon on this one - it is not usable in this state.
I suspect the oil it ships with is not very good vacuum oil. It has a distinct odour which is generally a bad sign, if you can smell it the vapour pressure of something in it is non-trivial. I will replace the oil with a high quality vacuum oil and see if it can pump a bit lower. Anything around 100 micron is pretty good for a single stage pump anyway, for $60 bucks I am not disappointed.
No sign of ceasing or an exploding motor-start capacitor as others have reported yet, but I have only run it for an hour or so.
Also I noticed the screws that hold the plastic switch cover were loose. Maybe due to vibration from use, it's hard to tell. It was no problem to remove them by had. I went ahead and took the cover off as there was no sticker saying not to and found that that there was a relay after the switch that was not secured inside the housing in any way. Just a red wire going in from the switch and coming out and going to the motor. I felt like maybe it shouldn't be jiggling around in there. A dab of hot melt glue put that right.
At this price point I don't think I could do much better and the hassle of returning and replacing is not worth it. The unit works for drawing a strong vacuum in a short amount of time and the price was right. You get what you pay for most of the time and that holds true here.
If you aren't familiar with Wine Degassing, you can read more online, but in a nutshell, "degassing" wine removes the CO2 that is created when sugar converts to alcohol. When you leave CO2 in wine, it tastes bubbly, and leaves a foul flavor.
I've tried several other products to degas my wine before looking at an actual vacuum pump:
* A handheld vacuum, often called Wine Pump or Vacu Vin. This is a six-inch tall pump with a rubber stopper designed for removing the air from a single bottle of wine. This works, but only pulls up small bubbles and takes a lot of effort to get a very small result.
* A metal rod wine whip. This is a straight metal rod with two plastic flaps at the end that you attach to a power drill and stick into your wine bucket or carboy to spin the wine around and stir up the bubbles. This was essentially, for me, an electric version of the Vacu Vin. Not much of an improvement, and took a lot of time.
* A Wine Whip degasser. This is a C-shaped plastic rod (much like the metal rod) that you also attach to a power drill and stick into your wine bucket or carboy to spin the wine around and stir up the bubbles. It works pretty well, better than the metal equivalent in my case, but takes a lot of time and only gets slightly larger bubbles than the Vacu Vin.
* A Vacuum Sealer. This is a completely different product. These are used to vacuum seal food. There are a lot of examples online using a Vacuum Sealer that use the accessory port (normally used for things like sealing Mason Jars) to degas the wine. I haven't tried many of these, but my Vacuum Sealer had a safety mechanism that shut it off when it hit a certain amount of pressure, so I had to restart it over and over. In the end, it never got more than small bubbles.
So I started looking for a proper Vacuum Pump; no shortcuts, just a real electric vacuum pump.
If you've looked at these much, you probably know that they are pricy. Most of the local big-box stores didn't even carry them, and even the few that did started over $100. At the time that I purchased this unit, it was $48 plus about $10 shipping.
I researched the different types of pumps: single stage, dual stage, etc. For Winemaking, a single stage looked like it was going to do the trick. The main advantage that I found in this research was that a dual stage would eventually be quieter as it was running. However, this vacuum pump isn't loud at all. I measured the decibels that it put out after warming up. With the decibel meter 6 inches away from the pump, it produced 64db. This is pretty low, in my opinion. This doesn't sound like an air compressor; it sounds more like a washing machine, dryer, but probably closer to a dehumidifier. This is not loud at all.
The vacuum power on this is more than enough for a 23 liter (or 5-6 gallon) glass carboy.
You are supposed to put another drip container in between your carboy and the vacuum pump when you start. I had read about how important it was to make sure that you don't get any wine or fluid into a vacuum pump, but having tried the above mentioned methods, I was expecting a slow start when I plugged it in, so I hurriedly skipped adding a drip container, but was ready to pull the hose off in case it started to fill the hose with wine. I am so glad I was ready. When I first turned it on, it degassed so fast! Bubbles shot to the top and wine was in the tube faster than I expected, and I was able to rip the hose away from the pump in time! But be careful, this thing can degas quickly.
After that, I connected a drip container and turned it back on and it is pretty amazing how well this works. I was using spare hose, not air hose that is reinforced, so the hose and tubing collapsed on itself and pinched, slowing down the airflow. Tomorrow I'll be heading out to get proper air hose, a relief valve, and probably even a regulator so I can monitor the pressure. This thing works very well and is a great deal!