\u00a9 2023 wikiHow, Inc. All rights reserved. When comparing measured or gauge pressure with recommended refrigerant pressures it is necessary to correct gauge pressure for ambient temperature variations. It is typically made of brass and is found at the base of the valve stem. Although the low side pressure should be around 2 psig, at times it can fluctuate from 0 to -3 psig. Website operating Every A/C System has two service ports: A high side and a low side. The gauge set accepts three connecting hoses: Note that gauge pressure is an absolute pressure reading before any correction for ambient temperatures around the unit. 2. With the compressor NOT running, connect your low side compound gauge to the valve that was added to the processor tube in the first picture, the tube that runs directly into the compressor housing. About. Warning: It can be difficult to solder a pipe if you dont have professional experience. A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. for technical comments regarding article text clarity, 12/30/2013. The male rotor moves the female rotor as the rotors inter-mesh against each other. Good as mentioned before, if it goes into a vacuum while running, which it likely will, don't disconnect the hose or air will get in. We describe the procedure for using test gauges when adding or replacing refrigerant: charging an air conditioner, heat pump, refrigerator with refrigerant gas. The low side service port is usually located between the AC compressor and evaporator. WebRefrigeration access valves provide an access port for connecting hoses to charge, drain, or test refrigerant and check pressure. The price of the new refrigerator compressor depends on many factors, such as the model of your refrigerator, the area where you live, and your country. Readings that are higher or lower indicate an overcharged system. Web10PCS Service Access Valve, 1/4'' SAE x 1/4'' OD x 4.92'' Brass Copper Charging Valve for Air Conditioner Refrigerant System, Air Conditioning Line Repair Tools $1098 ($1.10/Count)$12.38 Save 8% with coupon FREE delivery Mon, Feb 6 on $25 of items shipped by Amazon Aaron Beth. Gauge port. Gauge port. Connect your Freon tank to the adaptor. Service Areas. This compressor uses helical screw rotors to compress larger volumes of refrigerant. These caps serve two purposes: 1. If that did the trick, it was just a $30 fix. You need to use the same kind of Freon listed on the label of your refrigerator. To avoid overcharging, its best to charge in short bursts and let the system settle down for a few minutes in between. If the valve stem is all the way in, the valve is considered to be in the front-seated position. Web10PCS Service Access Valve, 1/4'' SAE x 1/4'' OD x 4.92'' Brass Copper Charging Valve for Air Conditioner Refrigerant System, Air Conditioning Line Repair Tools $1098 ($1.10/Count)$12.38 Save 8% with coupon FREE delivery Mon, Feb 6 on $25 of items shipped by Amazon wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. This prevents the valve from being overheated and damaged. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. 23-cu ft 1-Door Reach-In Commercial Refrigerator (White) Model # MXX-23R. Resource Hub. This article has been viewed 132,764 times. Make sure the valve is fully open by turning it counter clockwise. Exposing the low side and gauge to high pressure could certainly blow the gauge, damage the HVACR system, and cause serious injury as well. Working with these valves is not difficult, but there are some finer points to remember. Load More Products Note: Product availability is real-time basis and adjusted continuously. I have a sub zero 550 the refer compressor burnt out. My side by side Viking freezer/fridge has a top mounted compressor. There are 12 references cited in this article, which can be found at the bottom of the page. Carbon fluoride; Freon 14; Perfluoromethane; Carbon tetrafluoride; Halocarbon 14; R 14; PFC 14 are synonyms for R14 refrigerant. Just remember some basic rules for trouble-free operation. We explain how a refrigeration gauge set should be connected to HVAC equipment to avoid contamination damage and we review the refrigeration system evacuation and cleaning procedure. Do this for 4-10 seconds and retest your valve. Close the port every minute to check the pressure. 4. On some fridges, the Freon line will be added to the suction line. The compressor has three copper tubes attached. We are no longer supporting IE (Internet Explorer). The compressor tank is the large tank on the bottom of your fridge behind the panel. some walkin freezers have a hot gas bypass valve that is usually called a head pressure control. Maximum amount of digits: 6. If your refrigerator uses freon, keep in mind you'll need to hire a professional to remove the freon whenever you dispose of your fridge. WebYou should install a refrigerant valve adapter to the saddle valve for the safety of your refrigerator. They are designed to work for specific models. Newer vehicles will use an R134a Manifold gauge set while older vehicles will require use of an R12 Manifold Gauge set. In the shop we connect both high and low pressure gauges to the equipment being tested. To be clear, when connecting an HVAC refrigeration gauge set to test fittings on an air conditioner or heat pump we must: We use (and illustrate) a traditional Imperial System Analyzer gauge set that provides three charging lines (refrigerant canister, high side, low side). WebDIY Refrigeration System #2 Service valve Shaun Dobbie 8.88K subscribers Subscribe 45K views 7 years ago Fitting a service valve to a refrigeration compressor. Service Areas. CPS Products is a business built by technicians, for technicians. If there are multiple pipes, consult your fridges manual to determine which one is the Freon line. nobody can match our lg repair service technicians' product knowledge and commitment to excellence, utilizing only genuine lg The most common arrangement has the switch contacts on the 3 grouped terminals with the common leg in the center (hot 120 vac line) and the normally open leg (defrost heater wire) on the end. To avoid an expensive service call, Costas suggested we first try pulling the fridge away from the wall, unplugging it and removing the service panel for about 20 minutes to allow enough time for the compressor to cool and any onboard computers to reset. Once connected, and if positive pressure is shown, loosen the hose connection at the gauge manifold body and allow a small whiff of freon to escape so as to purge the line of air (a one second psst is enough). So he suggested we buy an overload and a compressor relay (or a universal relay kit) from the appliance parts store and install it (see photo above). If you do, there will be a hole in your suction line or Freon supply. You may need to remove the defrost drain hose from the service panel and soak it in hot water before reinstalling it. Use these valves as a temporary service tool, preferably attached on the process tube. Be sure not to allow water to enter the system. If the needle is higher than 0 but under 1 psi, youre fine. Consult a fridge repair company if youre not confident when it comes to fixing pipes. Together, these parts help the refrigerator turn liquid refrigerant into a gas, and then back into a liquid once again. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. All Rights Reserved BNP Media. Explore all our refrigeration access fittings, adapters, valves, and accessory options: Adapters Back Seating Control Valves FIND. Your local service area CHANGE LOCATION. (new Image()).src = 'https://capi.connatix.com/tr/si?token=2ba02a33-c319-4410-bba7-f8321a13bed3&cid=877050e7-52c9-4c33-a20b-d8301a08f96d'; cnxps.cmd.push(function () { cnxps({ playerId: "2ba02a33-c319-4410-bba7-f8321a13bed3" }).render("00499ba9282e4d1b985fa8af14d29c2b"); }); Unfortunately, our compressor noise returned, meaning it was toast. Two are the high side and low side, but one is a short piece that's crimped and brazed closed. 3. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Locate your compressor tank. In this position all three connections the gauge port, line, and compressor are open. The possible versions include R-12, R-13B1, R-22, R-410A, R-502, and R-503. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Never break into a system that may be under vacuum air will enter and you'll have a second problem.