How much water is bad? This is a debatable question. Every vehicle has it's own amounts and you don't want to put to much or too little. If old oil volume is 3-5 oz, replace with that volume plus 1oz. but if using new parts or installing a system that was designed for R-12, then change the oil and use the correct refrigerant with that oil. Trinary switch is a safeguard for the compressor which prevents the system from running below a certain pressure. the compressor back and forth a few times to help the oil reach the oil drain hole. 3 has a suitable viscosity (high pressure, high temperature, oil viscosity should be high). is in the system. Do you keep track of how much oil you add to the system?. Never refill with more than 8 fl oz (237 ml) of oil in compressor unless system has been flushed. There needs to be a full charge of refrigerant oil in the system, not too little, or too much. Here’s how it happens and some suggestions on how to solve and even prevent the problem The High Cost of Ignoring Chiller Oil Buildup BY MARK KEY BY MARK KEY O il entrained in a chiller’s refrigerant charge unnecessarily costs owners. This control is used when the compressor is provided with pump lubrication. Best to leave it to a professional. An oil pressure failure control stops the operation of pressure-lubricated refrigeration equipment when the oil pressure falls below a safety limit for a specified time. If the Freon leaks out so does the lubrication. A new compressor is generally dry. Before your Mustang’s air conditioning is serviced in the wake of refrigerant. Too much freon in the air conditioning systems also means that additional air conditioning lubrication oil has been introduced. The increase in oil in your vac pump is prolly due to expansion through the heating of the oil in your pump. Result/customer feedback: Claim is rejected. This would cause a low oil level in the compressor's crankcase sight glass. So manifold purchase if calculated in terms of money is already utilized, however all friends carried in their own can of freon and I topped it up for free, and they took back the left over gas for. The main danger with too much refrigerant inside an air conditioner is that it can damage to the compressor. HVAC systems with too much oil can result in reduced cooling capacity, and systems with excessive lubricant will create an internal coating that results in less heat transfer. My ac compressor went out and so I bought a new drier ( i know you should replace expansion valve also) and went to the junkyard and got a ac compressor. i had a very hard. Maintenance intervals will depend on the variety of oil compressor you own. A complete system requires 8 oz of PAG oil. The system is designed for a liquid-gas balance and too much liquid, refrigerant or oil, hinders evaporation that provides cooling. NOTE! When applying Demand Cooling, the optional. In another twist of too much oil in the sight glass, the high level of oil may be caused by liquid refrigerant in the crankcase. I let out more and it blows outside air temp (about 100 deg). Could there still too much oil?. How come the air is too cold or too warm? Too warm: Compressor may not be working or the system may have a leak and has lost the entire refrigerant charge. Also, any time flooding or migration occurs, the crankcase oil is sure to be diluted with refrigerant. If oil contamination is a concern, an oil slinger can be provided to prevent packing lube oil from entering the compressor frame. Other parts that should also be replaced following a compressor failure include the accumulator or receiver/dryer, and the orifice tube or expansion valve. Units need oil to work properly for sure, but an oil leak is also a refrigerant leak. We’ll spell out how your home or product warranty could affect how much you pay, as well as informing you on whether to pay for the compressor repair, or replace the complete ac system. If you just charged it — and aren’t really experienced at it — and it’s not chilling like it should, try letting out just a tad of the refrigerant. Note: Condensing temperature is derived from using the PT chart. It increases the refrigeration effect per pound of refrigerant (a larger ∆h) so that more cooling is done without an increase in compressor power input. Do not overcharge the system the compressor will be damaged. • Use of incorrect compressor oil. While installing a new compressor or any other parts in your AC system, it is. Check the CFM rated output for the air compressor. Can you add too much refrigerant oil? 02 F-150 4. Too much oil in the compressor would : A. For some odd reason, many Beverage Air freezers leak from the site glass. Re-install oil plug. When you’re finished with an egg, put it in the egg carton, small pointed side down. Put oil back into compressor. Charge the system with [Front only: 600±25g (21. Topping off the A/C system annually without adding lubricant assures a slow compressor death. The oil level in the compressor should be. H - too low L - too low. Check the pump manufacturer's specs for the recommended viscosity of refrigerant OIL to use with that pump and check the vehicle manufacture's specs as to how much refrigerant OIL is used in the system and how much is attributable to the receiver / drier and only add the amount attributable to the receiver / drier back into the system. Re: How much oil in R4 compressor 05-07-04 08:27 PM - Post# 441641 In response to 86FLSub The R-4 compressor retains very little oil. This article will show you how. At the end of the discharge process in the screw, no clearance volume remains. Improper adjustment of expansion valve(s) or liquid control device(s) Expansion valve power element dead or weak. pressure sensor took about 20 min to get off too. If you notice leaks around the unit's area, this could cause severe damage to the compressor. A bad capacitor will sometimes cause lesser current to flow to the compressor motor,causing it to heat up. Too little refrigerant is most likely caused by an insufficient charge from the last technician, or from a refrigerant leak. There is not much velocity in the suction line. Since it is not possible to see the oil level, make an estimate (the refrigeration shop should be able to help here) and, with a tube connected to the inlet, start the compressor and suck some oil into the unit. In event of leakage oil usually comes from the refrigerant circuit. These need to be lubricated with oil. stances is using the wrong oil when servicing the compressor and other equipment. Insufficient refrigerant in system. then I followed with a 13oz can of 134a refrigerant. When the Freon gas is compressed, its pressure rises, making it very hot. Q: Is it possible for an HVAC technician to overfill an air-conditioning system with too much refrigerant (my system uses R-22)? For example, if the system needs two pounds, is it possible for the. Using the wrong compressor oil can harm the entire cooling system. Worst-case is that the low side of the compressor gets a "slug" of oil all at once and tries to compress it - oil doesn't compress so something has to give!. If you put oil in there and it already has oil, the AC system will not function properly because it has too much oil. Refrigerant compressor runs for the extended period of time. It is dispersed throughout the system, so when you remove the compressor, there is still oil in the system and other components. A/C oil capacity Alldata gives the following for an '02 LS V-8 Total system oil charge: 7oz. I flushed the system out and added oil (5 oz) back into the system. Quality Refrigerant Oil manufacturers & exporter - buy Bitzer Fully synthetic environmental protection refrigerant compressor oil BSE32 BSE55 BSE170 from China manufacturer. As they are installed in a clean clinic, in a office-like environment (as opposed to an industrial environment), the compressor needs to be quiet, small and work on a standard 220 / 100 volt power outlet. POE Oil, or Poly Olester Oil, is a synthetic oil that was designed to meet the needs of the changing refrigeration industry. If you're using a rebuilt compressor from Deere, it should have sufficient oil in it for the system to work fine, at least they always have for me. If there is excess oil in system, flush A/C system (para. Maintenance intervals will depend on the variety of oil compressor you own. Now enjoy your ice cold AC. If too much mineral oil is left in the system after converting, it may be deposited in the evaporator and impair the boiling heat transfer. Only hire qualified HVAC professionals Because a leaking refrigerant line is a delicate issue, one that has been fixed the wrong way can also result in compressor failure. AC Compressor Pressure Readings and their Implications. On the other hand it’s possible that somewhere along the line too much oil could have been added. Note: Condensing temperature is derived from using the PT chart. END OF TESTING! AIR CONDITIONER COMPRESSOR NOTE Before beginning compressor troubleshooting or inspection procedures, always clean away oil, grease, dirt, and refrigerant residue. Then drain the pressure tank. Larger, efficient, de-mister type oil traps furnished as part of the screw compressor package minimize problems of oil carryover. Posted by: Engineer-Poet | 27 February 2012 at 09:02 AM While criticizing some aspect of this particular Denso design, I fully support the electrification of the HVAC compressor. I flushed the system with an air gun and got quite a bit of oil out of the condenser, evaporator, and compressor. How the Conventional Oil Separator functions: Refrigerant gas from. Never refill with more than 8 fl oz (237 ml) of oil in compressor unless system has been flushed. So, if you don’t know how much oil was drained from the compressor, then you won’t know how much remains in the system, and then you will not know how much to add back. If too much refrigerant is put into the system, or if the wrong type of refrigerant is used, it can cause the compressor to stop working altogether. I understand that each component requires so many mL of PAG oil, but what I don't know is how to know how much to put in. The total system oil capacity for many late model passenger car A/C systems is only about 4 ounces (120 ml). , in the system before sealing it up. Compressor / System Refrigerant & Lubricant Specs All oil specifications assume that A/C system has been properly cleaned, and new accumulator / filter drier has been installed. The kit does not take up to much leg room, and it does not use too much horsepower from the engine. Too much oil is in the system. Too much oil will reduce the cooling capacity of the air conditioning system. refrigeration compressors in these applications is 7. When the compressor cycles off, the frost melts, and I end up with a puddle of water on the floor. NOTE! Refrigerant and oil capacity guides are based on data provided by sources such as AllData and Mitchell. If an accumulator system, do not dump oil into the evaporator but dump the oil into the accumulator. Too much freon- Too much of a good thing is wonderful! is what my uncle use to tell me, but not when it comes to freon. Too much sub-cooling is unnecessary and reduces the efficiency of the system. Also, the type that comes in the "ready to charge" cans is pretty generic and more than likely not the correct viscosity for your system. Cause: The cause of the failure is due to missing oil. Is it possible to fill too much refrigerant into an AC system? Is it possible for an HVAC technician to overfill an AC system with too much refrigerant (R-22)? For example, if the system needs 2 pounds, is it possible for the technician to force in say 3 or 4 pounds? If so, can this damage the AC system or cause it to malfunction and stop cooling?. Just don't add too much because an oil overcharge can cause poor cooling problems. Don't mind the specks you see in the oil from the compressor it's from the leaves on my shirt as I was on the ground and some fell in the cup. Get at least one can with dye in it. Since it next flows to the compressor, this could be dangerous. Liquid refrigerant should never get into the compressor because it will lower the compressor's lubrication and may allow oil to pool inside it—leading to a complete breakdown. Due to the design of your air conditioning system, too much oil can clog the system and too little oil will lead to premature failure of the compressor. In a preferred embodiment, a single motor drives both oil and refrigerant pumps in a refrigeration chiller, the motor and oil pump being disposed in the chiller's oil supply tank and the refrigerant pump being disposed exterior thereof. Pressures alone will not tell you how much freon is in system, it will only tell you if compressor is operating/cycling. Also, when you have too much refrigerant in the system, it will cause the system to have more pressure, and this can again lead to issues with the compressor. 4 each in evap and condenser? I still don't see this mysterious refrigerant tag in my engine bay. Due This refrigerant will also dilute the lubricating oil in the compressor sump. If the compressor is already old or parts are old then just use the Hotshot or autofrost. And the compressor kicked on normally. This oil, mixed with the buffer gas, flows to the separator system, which consists of a separator and a condensate trap on each side. Drain all the oil from the new compressor ,if you compressor has a drain plug you will need to open it up and drain what oil is in there too. refrigerant in the compressor, when mixed with oil, reduces lubrication and increases wear, causing premature failure. Not enough oil in the compressor will damage it. Could there still too much oil?. This is a significant factor. NOTE! Refrigerant and oil capacity guides are based on data provided by sources such as AllData and Mitchell. Get at least one can with dye in it. This is commonly caused by turning compressor off and back on too quickly or too much refrigerant or poor condenser cooling. Line Coiled Horizontally and Refrigerant Boiling Points. ), Front & Rear: 750±25g (26. Other parts that should also be replaced following a compressor failure include the accumulator or receiver/dryer, and the orifice tube or expansion valve. The manual indicates that 11 ounces of refrigeration mineral oil should be in the compressor when measured with a 'home made' dip stick. Compressor/coils capacity relationship? Hello all, new lurker. Turn compressor shaft 8-10 full revolutions to insure front seal and other internal parts are lubricated. Adding refrigerant to your A/C used to be a pain, but thanks to new technologies, it's something that you can easily do yourself. This may lead to damage of the movable parts in the compressor. This would cause a low oil level in the compressor's crankcase sight glass. The whole system is housed in a packaged unit that is often located outdoors, such as a rooftop or an outhouse. The compressor clutch circuit is opened if the pressure in the system drops too low. Some systems will do the same thing if too much refrigerant is added, as a way of protecting your system from too much liquid in the system, which would soon ruin the compressor. If you’re up for doing a little bit of sleuthing on your own before you make a service call for a broken compressor, try this simple test to tell if your compressor is bad or not: Grab a flathead screwdriver, pull your fridge away from the wall, and unplug it. If the oil contains too much water, the air end will not function properly. Too much oil in the system can puddle in the condenser and obstruct the flow of refrigerant causing a drop in cooling performance. The manual indicates that 11 ounces of refrigeration mineral oil should be in the compressor when measured with a 'home made' dip stick. High superheat: (starving) In this scenario, the compressor will get too hot causing its sump oil to overheat, slowly break down and lose its viscosity (lubricating effect). (thought rule was whatever you get out + 1oz. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. If there is oil in the condenser, evaporator, lines you need to remove oil from that 220ml. When you do change a compressor, make sure you know what type oil it contains. The oil amount drained from the old compressor (B) is 50 cm³. Measure and record the amount of oil drained from the compressor. When the Freon gas is compressed, its pressure rises, making it very hot. Got home and listen to compressor at idle and was quiet again. Additional Features: ½ hp, twin cylinder, oil-less compressor for fast recovery of Class III, IV and V refrigerants including R-410A Superior condenser design and performance: System designed for high load conditions. If too much mineral oil is left in the system after converting, it may be deposited in the evaporator and impair the boiling heat transfer. Nobody knows including yourself how much oil is or isn't in your system. NOTE: As is with the Master Bilt; I am going to speculate the leak at the site glass is the result of massive or in- excessive vibration. The trouble with overcharged refrigerant. 4oz in each for condenser and evaporator. The frige is working OK now, however, the line leading from the evaporator coil back to the compressor is frosting up right to the compressor. Too much oil in the compressor can also cause oil trips. You're adjusting the LPS based on compressor cut out. Mercury refrigerant and oil capacity charts. Whether it is in the compressor or any other part of the heat pump, moisture in the system causes burnouts as well. I filled the compressor with 20 ml of PAG 100 oil. If you are replacing the oil in the entire system, it is better to distribute small portions to the compressor, condenser, and evaporator. Often the compressor discharge is routed to either a booster or flash gas compressor or to a low-pressure gathering system. Re-install oil plug. BASICS OF OPERATION AND APPLICATION OF OIL FLOODED ROTARY SCREW COMPRESSORS 149 ) Figure 6. In event of leakage oil usually comes from the refrigerant circuit. $1000 just for the compressor, refrigerant, labor, diag is what you would expect from the dealer. This article will show you how. Too much refrigerant dissolved in the oil will also reduce the oil viscosity which might become the root cause of bearing failure in the future. Due to the excess charging of the refrigerant,there will be a chance of excess of refrigerant in the compressor. So would I only put 2. How do I know? The compressor cycles on/off repeatedly. These need to be lubricated with oil. If a less-than-qualified person works on your air conditioner and inadvertently adds too much refrigerant, or even the wrong type of refrigerant, it can be a deadly mistake for the compressor. Most systems have a low side cut-out switch that prevents the compressor from operating if the level of refrigerant is too low. Replacing a compressor could be costly. The 220 ml is for a new compressor in a new system. Like vapor recovery compressors, casinghead compressors operate with low suction pressures, high compression ratios, and low gas throughput rates. The Hella PAO 68 oil I used better stays in the compressor, so less an issue (BTW, doesn't absorb moisture like PAG). ok I have a problem. There are several viscosities of PAG oil used by vehicle and compressor manufacturers and using the wrong viscosity oil in a compressor may create abnormal compressor noise and possible premature internal component wear. Is that mean 130 gr will be amount of our refrigerant system or Do I have to determine how much oil should be in the refrigerant system ?. This would cause a low oil level in the compressor’s crankcase sight glass. If you just charged it — and aren’t really experienced at it — and it’s not chilling like it should, try letting out just a tad of the refrigerant. assuming that a refrigeration plant uses a horizontal shell and tube condenser with the water in the tubes and the refrigerant in the shell. Refrigerator compressor oil level – Compressor oil changing pump for refrigerator. Failure to control excessive oil buildup in a chiller’s refrigerant can badly impact capacity and efficiency. Now enjoy your ice cold AC. Refrigerant and compressor oil are two essential substances for any air-conditioning system. g If compressor has 130 gr. The compressor is protected from overloads by current-operated circuit breakers. So would I only put 2. I'm guessing that the oil mist is normal and essential in lubing the top of the piston/cylinder from the suction port. used to draw in more suction charge. A small amount of oil is combined with the Freon gas to lubricate the compressor. I think that is the right number for the a/c compressor, that's what my 03 LS has in it and unfortunately there is no way to check the oil level in the system, the oil circulates with the gas and some portions of the oil is retained in the receiver/drier, the condensor, the evaporator, etc. If an accumulator system, do not dump oil into the evaporator but dump the oil into the accumulator. So, if you don’t know how much oil was drained from the compressor, then you won’t know how much remains in the system, and then you will not know how much to add back. Evacuate the system good to remove air and moisture before you. hicksvilleshick. It should be pointed out that the air conditioning system isn't actually creating coldness, as "cold" isn't a property of thermodynamics--it's simply a lack of heat. Scored cylinder. While superheat indicates how much refrigerant is in the evaporator (high superheat indicates not enough, low superheat indicates too much), subcooling gives an indication of how much refrigerant is in the condenser. Depending on where you get your compressor, it may be filled with oil already. Too much freon in the air conditioning systems also means that additional air conditioning lubrication oil has been introduced. The extra refrigerant can also flood the compressor and damage its mechanical components. refrigerant oil as was removed. Of PAG 46 oil, and this is where I think I am overthinking this procedure. Too much oil will slug the compressor and reduce a/c performance. Although Copeland Scroll refrigeration compressors have more oil capacity (140 oz. Lubricating oil level in the compressor will drop. This ensures proper lubrica-tion of the compressor. b)expansion valve and evaporator coils. Since it next flows to the compressor, this could be dangerous. Do you think it is low on oil? How do I know if it has too much or not enough oil?. Too little refrigerant oil can cause compressor damage, and too much can reduce air conditioning system performance. Compressors themselves may also develop a refrigerant leak, which usually necessitates their replacement. Most 1996 and newer A/C systems use R134a refrigerant and require some type of PAG (polyalkylene glycol) oil for the compressor. Then drain the pressure tank. The lubrication oil. Replace cylinder. Never refill with more than 8 fl oz (237 ml) of oil in compressor unless system has been flushed. 08-07-12 07:43 PM - Post# 2256936 In response to dually502 drain the compressor and then add whatever amount of oil the tag on your truck says. This often occurs when a new compressor is installed with a new oil charge on a system that previously had oil return issues. As they are installed in a clean clinic, in a office-like environment (as opposed to an industrial environment), the compressor needs to be quiet, small and work on a standard 220 / 100 volt power outlet. Other parts that should also be replaced following a compressor failure include the accumulator or receiver/dryer, and the orifice tube or expansion valve. b : What are the consequences of oil presence in the refrigeration system ? All the oil does not stay in the compressor cranckase and a part is brought into the refrigeration system: During stages of start-up of the compressor, due to the sudden evaporation of the refrigerant dissolved in the oil ; By the piston rings in piston compressors; By. Also check if oil has leaked. The oil charge. How much oil did you recover? Fewer than three ounces recovered - pour 6 oz of liquid oil directly into the suction port of the new compressor and let it sit clutch face down for 20 - 30 minutes to lubricate the front seal, before installing. Garages should only fill the compressor with refrigerator oil approved by either the car or compressor manufacturer, and should also avoid using universal or multi-grade oils. If the compressor is already old or parts are old then just use the Hotshot or autofrost. Don’t worry if you’re putting it on too thick or thin, just so long as every part of it is covered. Oil to be put back into system: x oz. My system took 8oz of Pag oil. Motors utilized in ammonia refrigeration system compressors are the open drive type and not hermetic due to ammonias incompatibility with copper. This means that there is still some of the refrigeration process going on inside the tubing, and there will be a build-up of frost or ice on the exposed section. How to Make an Air Compressor from an Old Refrigerator. Larger, efficient, de-mister type oil traps furnished as part of the screw compressor package minimize problems of oil carryover. Sludge and solid particulate matter can plug the oil inlet screen in the compressor sump or the lubrication passages in the crankshaft—loss of lubrication can quickly result in failed bearings. d)any of above. That’s why it spends your energy doing what a screw compressor is supposed to do—pump refrigerant— rather than pumping excessive amounts of oil. Unfiltered particles, debris, metal chips etc. A 120 cm³ (Oil level in new compressor) - B 50 cm³ (Amount of oil drained from the old compressor) = C 70 cm³ (Amount of oil to remove from new compressor) 3. I assume this is a walk in freezer so before replacing the last compressor it may have been out of the question to pull the evap and let it drain with the line sets, then use nitrogen to blow out the cond coil. The coldest parts of the system are the evaporator and suction line. If you replace the compressor again, drain the oil out of the existing compressor into a measuring cup. We provide products and solutions for use in Food Retail, Air Conditioning, Industrial and Commercial Refrigeration. When you evacuate a system and get an abnormal amount of oil it might be well to flush the system and add the right amount of oil. Don’t worry if you’re putting it on too thick or thin, just so long as every part of it is covered. Also, when you have too much refrigerant in the system, it will cause the system to have more pressure, and this can again lead to issues with the compressor. A faulty automotive air conditioner can be one of the more difficult issues to diagnose and repair. If you don’t have the correct lubricating effect, the compressor bearing will wear and eventually seize. Defective compressor overload which will cause the lube oil control to time out and shut the system down. Not enough, bye bye compressor, too much, the refrigerant can't move proper and there will be an extra strain on the compressor. Diagrams: System Pressure Chart Get a quick look at what an average A/C system looks like, along with the compressor manufacturer and what the specific R-134a requirements are for your car. Good post on how to deal with compressor problems in refrigerator. Re: Air-con Refrigerant: How much to fill? Yes, My car issues were solved by I, me, myself, I mean, i topped up mine as well many cars of friends. The problem is that if you had any failure that resulted in a leak of refrigerant and/or oil, then the amount of oil remaining in the old components will not be correct. Add the correct oil. Note adding ref. I try to add it more slowly, but it still tops off quickly and then I'm back to cleaning up overflows and wondering how much oil I lost relative to how much is required to be in the compressor. used to draw in more suction charge. When using the oil, always follow the compressor manufacturers recommended oil as some oil may react with the refrigerant used in the system. In addition, the weight of the compressor changes depending on the initial oil level. The compressor squeezes the coolant, raising its temperature and pressure. Refrigerant compressor runs for the extended period of time. is only a temporary fix. This will keep oil from returning to the compressor and will normally show up as too low a reading on the low pressure gauge. PAG refrigerant oil is much more hygroscopic than mineral oil, and will absorb any moisture it comes into contact with, even moisture in the air. Too little will result in premature compressor failure, so this is tight balancing act. Drain that oil into a measuring cup- subtract from total. Systems with orifice tubes and accumulators usually don’t have sight glasses. If allowed, they will collect the refrigerant and oil mixture. Put oil back into compressor. Everything was back to way it was and blows cold. If too much mineral oil is left in the system after converting, it may be deposited in the evaporator and impair the boiling heat transfer. It's just a pain. " Where are you referencing the Grasso design floor of 51 psi nett oil differential pressure from? On our compressor "log" sheets the company recently added a "normal range" key. Flooding results from adding too much oil to the system. I have many lubricants here, motor oil, 2-stroke oil, bike chain oil, etc. Too much refrigerant can cause the compressor to suffer a permanent breakdown. Cleanness: Oil should be free of contamination. I put one can in, but my friend said his Dodge took four cans. If you add too much oil to the system, it may pool in various places of the system. HVAC systems with too much oil can result in reduced cooling capacity, and systems with excessive lubricant will create an internal coating that results in less heat transfer. Nobody knows including yourself how much oil is or isn't in your system. Adding too much heat to the refrigerant in the accumulator can overheat and damage the compressor. If the running time is too short, more of the frozen oil will be deposited in the system and cannot be returned to the compressor. This will cause oil foaming at start-up. The refrigerant oil is suspended in the Freon and too much oil will clog the components and be detrimental to its operation. The system needs 8oz's of PAG 150 oil (the equivalent of the original GM part spec) per my GM FSM. Relationship Between Refrigeration Oil And Compressor 1. 3 The compressor is too hot • The compressor is only cooled by intake ( green circuit ) • Insufficient freon, prob-able leak. A blockage in the system. So it's common for DIYers go overboard and add more oil every time they add refrigerant. If the oil contains too much water, the air end will not function properly. A refrigerant leak can also occur in the A/C compressor, condenser, and/or evaporator - essentially all of the components of your air conditioning system. Oil breakdown in the refrigeration system has plenty of negative side effects. Is this compressor a H6 or a HT6? I have no idea what type of oil is in the system now. Using the wrong compressor oil can harm the entire cooling system. After the compressor is warm, unplug it and carefully wipe it down again. However this refers to the problem of some vehicle A/C systems being (unknowingly) charged with too much refrigerant. Improper Refrigerant Charge – If there’s too much or too little refrigerant in the system, the compressor may shut off randomly and prematurely. A complete system requires 8 oz of PAG oil. Clean air filter element and check for other restrictions in the intake system. I filled too much refrigerant in my AC. This is a very brief description and does not go into dryers etc. When the refrigerant is recovered, I'll swap the new parts in, (do I need to flush still even though I'm replacing everything but the evaporator core. Now enjoy your ice cold AC. You might get to hear what a breaking rod sounds like. Here are some ways an evaporator can become oil logged: A flooded compressor is circulating oil. My system took 8oz of Pag oil. , while partial immiscibility (liquid~liquid seperation) may also cause problems, since both (oil rich and refrigerant rich) liquids could have very low viscosities. I would recommend a reflush to bare metal using an evaporative solvent and long air blow to be sure the internals of the heat exchangers are clean and DRY and Oil flush the compressor following the tips on the procedures page of this forum. Do not overcharge the system the compressor will be damaged. All compressors are vulnerable to lack-of-lubrication failure, either from lack of oil or from too much refrigerant in the oil. Use the Rheem heat pump troubleshooting guides below. The oil amount drained from the old compressor (B) is 50 cm³. It should be one that can be used with ordinary standard lubricating oils where possible, avoiding glycerine,or similar semilubricants which often lead to excessive wear on the moving parts. It's now a hot, high-pressure gas. If you are replacing the dryer, good idea, it needs an ounce of oil added to the new one before you install it. Got home and listen to compressor at idle and was quiet again. END OF TESTING! AIR CONDITIONER COMPRESSOR NOTE Before beginning compressor troubleshooting or inspection procedures, always clean away oil, grease, dirt, and refrigerant residue. I think I may have too much oil in the system. If volume is greater than 5 oz, replace with 5 oz. That's the proper way of doing things and not risking compressor seizure due to "too much" or "too little" of anything. I talking about the compressor crankcase filling up with oil!! Large amounts of oil!!! How is it possible to have too much refrigeration oil in the compressor? It should be a simple procedure. This will lower the lubrication in the compressor and allow oil to pool up damaging it. Another is to remove debris following a catastrophic compressor failure. The screw compressor is an oil seal, oil cooled unit, with the cooled oil injected into the compressor in contact with the refrigerant vapor. If you don't follow the AC compressor oil capacity for your car you can risk having a lack of lubrication for your compressor causing premature wear. Depending on use, reciprocating air compressor requires new oil every 180 days or so, while rotary screw compressors require new oil at the 1,000 hour mark. Is that mean 130 gr will be amount of our refrigerant system or Do I have to determine how much oil should be in the refrigerant system ?. What happends when there is too much r134a AC fluid in the AC system? mine was a little low, so i added some of the fluid when it was 75 degrees out, i made it 65-75% full in the "green zone" blue=low, yellow=too much, red=danger. The oil amount drained from the old compressor (B) is 50 cm³. Do not get the refrigerant with "sealers".