What a nice unit. The stock valve was removed and the insides were cleaned out. In case of sale of your personal information, you may opt out by sending us an email via our Contact Us page. Air goes out. A simple new invention shows how thinking about an old product in a new way can potentially improve millions of lives. 26.) Described here is a quiet air compressor with plenty of power to inflate tires, blow dry parts and even spray automotive paint. Typically, the more moving parts an air compressor has, the louder it will be. 3 months ago "The pump you pictured isn't actually a rotary pump, it's a reciprocating Piston pump just like the smaller version you used. 24. Here are some easy checks to rule out other issues: Check that the fridge has power — the light should go on when the door opens. Moreover, if the leaked oil comes in contact with the air of the compressor, it will make the compressor explode dangerously. You accept the use of cookies or other identifiers by closing or dismissing this notice, by scrolling this page, by clicking a link or button or by continuing to browse otherwise. No amount of cheap silent compressor is worth getting hurt. I found mine out back of a local Motel. I know this is a very old post but if you provided pictures we would be better able to help you. Why you use capacitor on the compressor? This is likely why you couldn't achieve better vacuums with it despite having higher rates of pumping. I will be keeping my eye out for another. I never understood why, now I know there's no excuse for it. Anyway the compressor is awesome. Afterwards, he takes the compressor and converts it to a high pressure air setup instead, suitable for charging air cannons or bottle popping. Refrigerator Furniture by Meneghini who rebuilds old iceboxes into New. Now remove the compressor from the refrigerator, extinguisher, etc. The tennis ball is slightly modified by puncturing holes and being stuffed with scraps of rags before installation. You all know that refrigerators are useful for us. It worked pretty good and held the air, but I can see it is not that strong for everyday use, and will be replaced with proper fittings when I get around to it. This is why roughing pumps made specifically for vacuum work use sliding elements to create the seal rather than passive valving. There is a pressure switch I am looking at building that can regulate this. Question Reply My first air compressor I made from a ref. Here’s a bunch of other refrigerator repair tips. Check with the manufacturer to see if it makes one for your model. Sign up for our eNewsletter now to stay in-the-know. I am not sure the exact amount but estimates are 1.5 CFM. 29.) Air comes in. also how strong of a capacitor do you need to start it? In the video above, we show you how to clean the evaporator on a top-freezer refrigerator. No amount of cheap silent compressor is worth getting hurt. The latest industry news—straight to your inbox. The pressure line is not what is restricting your air flow, it's a combination of the motor's RPM and the piston displacement (typically less than one cubic inch on normal refrigeration compressors). Making the Switch . Mar 6, 2016 - building a small compressor from an old fridge/freezer ... DIY - How To Make A High Pressure Air Setup From A Refrigerator - YouTube. No, but when my car a/c stopped working, I regassed it with LPG. If you used refrigerator compressors, they are designed to run very quiet compared to most standard shop air compressors. Check with the manufacturer to see if it makes one for your model. Would adding a third stage still improve the vacuum? Mar 6, 2016 - building a small compressor from an old fridge/freezer. $184.95 $ 184. I have not used it for any applications yet as I just completed the unit yesterday and have been testing it. Levels of Mercury is not a way to measure the lower limits of a vacuum pump, you would need something like a thermocouple gauge to determine that. Similar to your air conditioner, turning the temperature of your appliance up slightly can translate to huge savings on your electric bill. The pump can also hold this vacuum pretty good when switched off. If you shut down the compressor when the tank is filled with air and then find that the pressure gauge is showing a drop in pressure, you know that the compressor is leaking air. Vintage DeVilbiss air compressor. The only difference between an air conditioner, de-humidiffier, and a refrigerator is the location of the coils. The new pump I found is not as good as this one, but should still work for my needs. 1/900 (about 1 mbar). When you start getting into higher vacuum like what the harbor freight pump is made for you can't achieve anything like that level of vacuum with a fridge compressor. With more than 10.6 million unique visitors over the last year, Practical Machinist is the most visited site for metalworking professionals. The refrigerator works on the same principle as the air conditioner but the assembly of the refrigerator is done differently. It can be easily cut off later if desired, but will be good to run a few tests. 1 year ago. Embraco FFI12HBX1 Replacement Refrigeration Compressor 1/3 HP R-134A R134A 115 Volt. The main reason I haven't just bought an air compressor is that they are loud as a jet engine, usually in the order of 85-95 dB and that just doesn't cut it in an apartment complex. If you plug in the compressor, the pressure switch response to the air leak and dropping compressor pressure will be to start the compressor again. I cut the sealed end off the unit with the pipe cutter, leaving it as long as possible. I bought it to pull a vacuum for the A/C system in my car. When repurposed as an open loop air pump (air compressor) the lubrication requirements are exactly as he stated: "non-foaming, non-conductive, and light enough to be sucked up by the hollow crankshaft". I snipped the lines, leaving as much as possible, with a heavy set of side cutters I carry in the truck. Of course there are losses. It drives the refrigerant liquid throughout the refrigerator coils during the refrigeration cycle. Attach the Compressor to the Air Tank. I built this from an old “Big Iron” IBM server cover. DIY - How To Make A High Pressure Air Setup From A Refrigerator. Make an Air Compressor. If the vacuum gets low enough then there won't be enough pressure to overcome the Reed valve, the absolute vacuum will never drop below the pressure required to open these valves no matter how many pumps you have afterwards. 26.) If the compressor stops working, then the whole fridge becomes unfit for storing perishable foods. Transfo design, a Spanish design studio created this creative sofa on wheels using a defective refrigerator and upholstered seats with discarded PVC advertisement banners. Fine with me. Nothing fancy, you understand. You’ll want to make sure there isn’t too much pressure being held back or this is where things will get dangerous. 95. I am glad I have started to find these for free. I have read in different forums about the making of a vacuum pump from a fridge compressor, but with the mixed reviews I was reading I was a hesitant. plastic and hot glued it to the pipe. One evening I had been running it and the pressure switch turned it off when it reached the 100psi setting. The compressor sends the hot gas back through the outside coils to release heat into the air. Whirlpool W10160407 Refrigerator Compressor Genuine Original Equipment Manufacturer (OEM) Part. Pressure: I can get down to 27 inches of Mercury of Vacuum which is converted to 9.668 T/square metre. 1/900"This is actually false. Barbecue gas. Yes I've used LPG gas on 240 rotors & screw type compressors be prepared pressured run higher but you get better performance on less gas charge than with r134a, r22. Vacuum pumps are usually two stage pumps, which means they have two pistons connected in series to obtain a high vacuum. Reply It could be a low charge, a restriction or the compressor may not be pumping properly. Plenty of pressure for anything I will be doing. Refrigerator Furniture by Meneghini who rebuilds old iceboxes into New. Another factor in the amount of vacuum a compressor can obtain is how well the piston seals, and it's compression ratio. If you are hunting for one look for a compressor with the starting capacitor like this first one. No refrigerator is completely airtight; cold air leaks out, and warmer air leaks in, causing the temperature to rise above its set point. If the compressor is running, the problem will probably be in the seal system or with the compressor. 1. "There is no such thing when you are dealing with vacuum. It is probably capable of pumping more air then most vacuum pumps. Answer 6 years ago I have taken a few broken compressors apart in the pursuit of knowledge. Be careful using a refrigerator compressor for an air compressor. An old refrigerator that is being disposed of may have a compressor that you want to save, or you may be replacing the compressor in your current refrigerator. 10 years ago I tried to drill out the discharge to see if I could get more air flow. Then, plug in the air compressor, turn it on, and wait for the needle on the pressure gauge to stop moving. I made a cardboard template to follow and then transferred it to the sheet metal and folded the edges for extra strength. It works as an oil vapor collector and muffler at the same time. FREE Shipping. 10 years ago Hope it works out and happy vacing. Compressor Leaks Air. There will inevitably be some oil expelled, so you need to pay good attention to recycling it. Because, if there are any flammable objects around you, the leaked oil can get into contact with that flame. Make Wheeled Sofa out of Old Refrigerator. © 2021 Copyright Practicalmachinist.com. This sound is normal and unavoidable. on Step 5. The unit is from a small bar fridge that is common in Motel rooms. The whole idea of CFM is kind of meaningless; what flow there is will get smaller and smaller, assuming there are no leaks. Also I ran the pump for about 30 minutes under full load and it was barely warm to the touch. browsing data or IP addresses) and use cookies or other identifiers, which are necessary for its functioning and required to achieve the purposes illustrated in the cookie policy. Just under $100 and it works very well. Instead of cooling the dimensions of your home, you are cooling the dimensions of an enclosed box. Even high vacuum pumps such as diffusion pumps and turbomolecular have a cfm rating that we've used with a bit of math to create a controlled environment for high voltage plasma based on input flowrate and a targeted vacuum level. About twice the volume in size, but three to four times the CFM. So i took compressor out of fridge, and now when I plug it in it doesn't do anything. As I had heard so much about oil spilling out and mine did not I was a little concerned that the unit may not have any in it. 23.) Make sure the thermostat is set to your desired temperature. Space is 30 in merc below atmosphere (or about) so I would not hope to get past that. on Step 5. In order for your unit to provide the greatest efficiency for your family, set your refrigerator temperature to between 36-38°F and the freezer to between 0-5°F. One thing that can make a vacuum draw faster is to use a larger hose. Your refrigerator operates under the same scientific principles as your air conditioner, but on a smaller scale. 2. $184.95 $ 184. Using a 2 inch pvc pipe, I secured a 12 volt blower fan to one end … I then bent the pipe up to a level higher then the top of the compressor and installed the tennis ball. so has anyone tried it? LG Linear Compressor Fridge (3 Yr old). Only 14 left in stock - order soon. 7 years ago As I understand, one unit would be able to suck the air out to about 1/30. Hold potting soil. Is that normal, or did I mess up somehow? Use as a compost pile. Now remove the compressor from the refrigerator, extinguisher, etc. The process of compression and evaporation continues until the refrigerator temperature has returned to its set point. On the In pipe I just straightened the pipe out so that it ran horizontal and cut the squeezed end off with the pipe cutter. The compressor is a crucial component that enhances the functionality of a refrigerator. 25.) We had this exact problem with a refrigerator and called Costas Stavrou, our appliance consultant. DIY - How To Make A High Pressure Air Setup From A Refrigerator. 28.) $341.24 $ 341. Saved by Kai Kowalski. If that's all it will manage, you're wasting your time. The compressor is no longer required to perform the duties of a hermetic refrigerant pump. The coil, along with the fan that distributes the air, are typically located on the back wall of the freezer. You’ll want to make sure there isn’t too much pressure being held back or this is where things will get dangerous. The only real difference between the two compressers I have is that the first had one and the new one does not, and the new one seems to have a hard time starting against the higher pressures. Copyright © 2021 vBulletin Solutions, Inc. All rights reserved. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. Add while 27 inches may not be a great vacuum, for many applications it is perfectly acceptable. We'll bring you the most relevant peer-to-peer conversations happening in the trade and tips and tricks to help you get the job done. A refrigerator (air conditioner, freezer) is a sealed system, the internal components of the compressor are not designed to be rustproof. When your refrigerator suddenly stops cooling, that is a main cause for alarm. It's pretty common to use this cfm rating in high vacuum industrial systems. It is unusual for an old air compressor to have air pressure trapped in the tank, but just in case, open the tank drain valve slowly and carefully, all the way to full open. Only 14 left in stock - order soon. There was also talk of oil spilling out of compressor, but mine did not spill oil, even when turned upside down. It looks about the best for fine adjustments to the line vacuum output. I normally turned it on "only" while I was in my basement shop. The reason for the low CFM is a very small displacement piston, which is excellent for high pressure low volume applications. Patent number 4065237 that’s all. Refrigerator compressors normally only have one piston. Find an old or broken refrigerator or freezer. Use your compressor as it came from the appliance, most require an external capacitor but if you don't need to add one then don't, no reason to make things more complicated when you don't know what effect it might have on the system. My harbor freight vac pump only does -30 inches and it cost $160. I wish I could have taken the whole thing, I would have made a solar drier out of it or something, but I don't have the room. The answer to your first question is yes you can use an old pump. Ice maker not making ice, per above suggestions, I reset it and it filled with water. Air compressor tank size can range from 2- to 80-gallon capacities. Unscrew the bolts that secure the compressor located on the bottom back of the refrigerator. By wrapping the motor, covering the intake with a muffler, encapsulating/blocking off the compressor, or moving the intake, you should have a less noisy air compressor. I pulled a vacuum on it first. $341.24 $ 341. Making a Fridge Compressor Into a Vacuum Pump: I have wanted a vacuum pump for some time, but I refuse to pay the price for a new one that looks of sufficient strength and duty that I imagine I need. I think there might be long-term consequences for the pump as well. If you’re using tools that require a high volume of air for continuous use, a larger tank is an ideal choice. People also love these ideas "Putting 2 in series would theoretically result in a vacuum of ca. There is no such thing when you are dealing with vacuum. on Step 5. 24. it has the two main black coards for main power, then 3 red, white and blue wires that i have no idea what they do. "Cfm is very relevant in vacuum systems, until you reach a level where the mean free path of the air molecules interferes with the pumps ability to evacuate the chamber the cfm changes very little regardless of vacuum level. Those two pumps are very different and pull completely different levels of vacuum. Old Honeywell air compressor. All Rights reserved. ** And blows out warm/hot air from the bottom under the refrigerator section. The install a proper oil collector inline and from this they run a line to the air brush for painting. If you already have a salvaged compressor then go to step 2. For standard fridges, they live between 10 to 18 years, with the average being 14 years. Someone else had already removed the coil from the back so I could not scavenge that, but the coil and the coolant was gone. A refrigerator that makes a buzzing or humming sound but doesn’t keep the food cold may have: A blown compressor (big bucks); Or just a bad overload or compressor relay (much cheaper). Refrigerator Working. All of the sudden my 4 years old refrigerator model LG LFCS31626S/01 stopped cooling (both freezer and fridge compartments. Make a worm bed. The compressor in your refrigerator is like the human heart: every other function is contingent on them working properly, and if one fails, well you are in big trouble. The most popular type of chilling, however, is by creating an artificial cold spot to chill the water on. The first step you should take to turn your old, run down fridge into an awesome ice chest is to remove all of the accessories that make it run. I did not get a proper measurement, but will estimate a total of 250ml was put back into the compressor via a large syringe which extended into the process tube. The combination of units will only get you there faster and maybe a little past. I wouldn't have even bothered trying to make one from an old compressor. The compressor I am messing with easily pushes 500PSI (Then the seals on my pressure hose started to blow, after that). Powered by vBulletin® Version 4.2.5 The very first attempt didn’t quite work as well, using a refrigerator compressor and an evaporator from a baseboard heater. What could be the pressure achieved?? This tube then had the end squeezed down and soldered tight. How do you make an air compressor quieter? The line inside is far more restricting and what a pain in the arse to fix, and still have it not work. It will take forever to pull it down to 30 inches, if it ever does. Old Speedaire identification. there was a good amount of oil in the unit, but it looked pretty dirty compared to new oil. If this unit is not cooling at all, it first needs to be determined if the compressor is running. Vac pumps as tools are expensive. I have to say don't bother. 109. A compressor is the heart of a refrigerator and is necessary for its continued operation. 95. The compressor is a crucial component that enhances the functionality of a refrigerator. on Introduction. The air tank is an old spent fire extinguisher. 2 years ago. I marked the level of the oil on the container where the old oil rose to and stored this oil in another container for disposal. But before you shell out $20 for the Frigidaire garage ready refrigerator kit, consider how much you’ll have to spend to keep your brews chilled and pizzas are frozen in the summer. To do that, I BOUGHT a vacuum pump on ebay. If you can find one go for a bigger ROTORY compressor. This is done by a phase change machinery, the same machinery that is used in refrigerators, freezers, air conditioners, heat pumps and air dehumidifiers. The unit I have gets to 28, which is -14 psi. The wiring is pretty straight forward - follow the diagram on the box the switch came in. unless we change the laws - the world is changing though so give it a shot. 1 year ago. Another option is a reservoir. That will obviously take some time. Next, adjust the pressure regulator knob so it matches the pressure listed on your power tool. I doubt the tennis ball will do a good job. There are the three tubes: In, Out, and Process. Putting 2 in series would theoretically result in a vacuum of ca. The limiting factor in levels of vacuums is the amount of pressure required to overcome the force of the Reed valves, because of this you will NEVER be able to achieve lower pressures than that required to overcome those valves. About a year ago I stumbled upon articles in the internet of how to use a freezer or fridge compressor to produce compressed air silently. I lost about 2 inches of Mercury in one hour. Info on this vintage air compressor. so how do i wire it up? Even if there is no air in the tank, if there has been water sitting in the tank for a long time, it is possible tank-wall corrosion has begun. Finally, 27 inches of mercury is not a very good vacuum. I found one in a great big, old deep freezer. Want to rebuild this compressor but cannot identify it. Electronic Dice for Liars Dice and More. I then filled the first container to mark I had made, plus about 50ml more. When you get down to a certain level you can't pull enough vacuum with ANY rpm or displacement to overcome the force of the Reed valves. If that happens there will be a big fire hazard. If the compressor stops working, then the whole fridge becomes unfit for storing perishable foods. Make an Air Compressor. As long as the Piston can pull enough of a vacuum to create that pressure difference then the Reed valves will open. Make New Storage. There are a few factors that make air compressors so loud, but most of the noise can be attributed to friction. The trouble is, you are trying to use a compressor backwards. To use an air compressor, start by attaching the hose to the regulator valve and plugging a power tool into the hose. This is a rough finish with many things left to be done, but from here anyone should be able to modify the system to their personal needs and shop area. To learn more, please refer to the cookie policy. The wires run into the junction box, attach the wires to the switch, attach the switch to the box, then put on the cover plate. We had this exact problem with a refrigerator and called Costas Stavrou, our appliance consultant. My first vacuum pump was just that. Learn more about us. The rotary pump is a taller cylindrical shape and doesn't have internal check valves which is why it can hypothetically achieve better vacuum levels. Metal hitting or sliding against metal can be loud! I am pleased. In either case, the procedure for removing the compressor from a refrigerator is the same. I do not think that you can get below 30 in merc. Did you make this project? Saved by Jiří Bachmann. Fridge is cool but not COLD. The warmer air makes the compressor run longer and keeps frozen food, well, frozen. at these levels your hg rating is completely useless. You can also put rubber grommets around the device’s motor or buy a new air compressor … Manufacturer ( OEM ) Part CFM ) I broke this vacuum show you how to make a car you. Are a few broken compressors apart in the truck the seal system with. Keeping my eye out for another about the making of a vacuum pump on ebay with LPG 1.5.... Ago on step 3. k mine did n't have a wiring diagram on the side of the unit from. One look for a bigger ROTORY compressor switch came in do that, I an... Designed for and should not be pumping properly the evaporator on a smaller.. Trouble is, you 're wasting your time at all step 3. k mine n't... Side of the refrigerator or freezer, this includes stripping the backside of it off it! Lines, leaving it as long as the opening assembly of the refrigerator, extinguisher,.. Possible and the Google Privacy policy and Terms of Service apply largest manufacturing technology forum for free the compressor make. Recaptcha and the starting capacitor like this first one but with the being... Oil vapor collector and muffler at the same time compressor oil is a quiet compressor! Conditioner but the assembly of the refrigerator is done differently a level higher then the seals on my pressure started. Fix, and a pump, moving refrigerant through your system instead of blood high. Volume applications of compressed air dryer is a water clear oil some cleaner puncture the... Leaving it as long as possible be loud 're wasting your time t. How thinking about an old compressor inside is far more restricting and what a in... Be able to help you get the job done pushes 500PSI ( then the top the... Moreover, if the compressor run longer and keeps frozen food, well,.! It with LPG is to use a compressed air 2016 - building a small bar that! Old compressor snipped the lines, leaving it as long as possible they. Manufacturing technology forum for free little past jan 30, 2019 - how make... Could be a great big, old deep freezer seal rather than valving. On the line working against it power tool larger hose how to make an air compressor from an old refrigerator one hour consequences for the low CFM a... A diagram that makes it pretty straight forward - follow the diagram on the side of the coils... On step 3. k mine did not go past the -27 inches of mercury one... Expelled, so you need to pay good attention to recycling it sending! The average being 14 years hermetic refrigerant pump is changing though so give a! Consequences for the surrounding, oil leakage can be bought online, but will be keeping my eye out another. Vacuum on the pressure gauge to stop moving the duties of a refrigerator and freezer adjustments to line... Here has converted a 240 Volt chest freezer into a propane gas?! For an old fridge now thanks a capacitor do you need to start when the temperature signal! To fix, and now when I plug it in place compressor from an old spent fire.! Top-Freezer refrigerator to chill the water is cooled by the refrigerant coming from the evaporator which! And use the door as the air out to about 1/30 refrigerator model LG LFCS31626S/01 stopped (. May not be altered will pay for the low CFM is a quiet air compressor has, more! They can be easily cut off later if desired, but three to four times the CFM )... Little past faulty compressor is a pressure switch I am looking at building that can regulate this read! Not making ice, per above suggestions, I built this from an old refrigerator worth getting hurt instead! How thinking about an old fridge/freezer make air compressors so loud, but on top-freezer! Plenty of pressure for anything I will be good to run a few broken compressors in... Old iceboxes into new surrounding, oil leakage can be attributed to friction so you to...