I purchased a compressor, designed for maintaining 40 psi in fire sprinkler systems. … With the gauge connected and revving the engine the reading lowered into the yellow. The compressor was fully on and the car just was barely cooling before I began adding the freon into the car – but it certainly was not keeping up and was not cool enough. I mean that would be the way to proceed if you're too chicken to try just doubling the speed, and I do not blame you if want to be cautious. The reading only went higher. It was 2hp and ran at 1000rpm, what I needed to use it in my shop was 100psi, since I did not want to change the motor to something bigger, I decreased the rpm to 850 with a smaller motor pulley and got my 100PSI. It takes 25+ minutes to pump up, I am not satisfied at all. The company that made it is all but lost among all reaches of the internet and around here nobody knows any more than I do about old compressors. These electric car ac compressor offer perfect HVAC solutions to people using them in commercial places such as offices, laboratories, test labs, garment shops, etc. Above 1200 RPM, efficiency rapidly increases; at operating speeds of 1800 to 2400 RPM it is about the most efficient pump on the market. The electric car ac compressor are capable of purifying and cooling the temperature of a large room and are also ideal for automotive. Once the problem has been diagnosed, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. Rencool have released their new series DC Voltage Compressor to suit the Automotive market. Guchen GC-EVS series electric scroll compressor adopt DC150V-420V or DC400V-720V voltage, used for all kinds of vehicle air conditioners such as bus ac, sleeper truck cab ac, car ac it also can be used for vehicle battery heating system. Hi all, I have a 1997 merc sable, out of the blue the a/c started putting out hot air intermittently. Replaced the AC compressor. If you are using the same motor as before, then I can't guess at a reason for the suspected slowness. It came to Colorado brand new and has been here ever since. Additionally, he made a recommendation or two about the maintenance of my vehicle. The high side pressure is too low. P.S. 8 years ago, The three fastest possible no-load speeds for a AC induction motor, with a power line frequency of 60 hertz, are: 3600 RPM (for a 2 pole motor) 1800 RPM (for a 4 pole motor) 1200 RPM (for a 6 pole motor) Assuming a "slip" of about 4.2%, those numbers become: 3450 RPM (for a 2 pole motor) 1725 RPM (for a 4 pole motor) 1150 RPM (for a 6 pole motor) Assuming the original motor was a different motor than the one you're using, it might have been a 2-pole, instead of a 4-pole. Fast, free online quotes for your car repair. Especially since you say you spent a lot of money on this compressor. It also depends on your acceleration and the year (most cars manufactured after 2000 have a relay that shuts off air conditioning at WOT (wide open throttle)) to ensure ample power for the engine under hard acceleration. document.write(new Date().getFullYear()) What I would suggest you do is get a service manual for it (if you haven't already). The reason I suggested the servicing was to check the filter(s), seals, valves and to ensure that internal parts are still well lubricated and moving freely. Mazda 2 - Car is not starting - Westminster, California. BTW,  the formula for determining induction motor speed, from power line frequency, and number of poles, is: no-load speed (in rev/min) =2*(60 s/ min)*(frequency)/(number of poles) And this page explains that a little bit:http://www.aosmithmotors.com/motornews/default.aspx?id=568, Answer I spent a lot of money on this thing and I was expecting it to be really fast. In electric vehicles, the A/C compressor is driven by an electric motor and runs at a constant RPM only when the A/C is switched on. The oil light illuminates due to a loss of oil pressure in the engine. Optimize fleet uptime and compliance via mobile vehicle repairs, Partner with us to simplify and scale fleet maintenance, Over 25,000 topics, from beginner tips to technical guides, Check cars for recalls, common issues & maintenance costs, Hand-picked, community-rated professionals, Our mechanics make house calls in over 2,000 cities, Explore nationwide job opportunities for automotive technicians, Trusted mechanics, rated by thousands of happy car owners, Fleet maintenance with certified mobile mechanics, Car surges when air conditioning is on Inspection Cost, The statements expressed above are only for informational purposes and should be independently verified. It does this to offset the power drawn by the air conditioning system. 1998 Honda CRV. http://www.aosmithmotors.com/motornews/default.aspx?id=568, http://en.wikipedia.org/wiki/Revolutions_per_minute#Examples. Tester. George_San_Jose1 March 16, 2017, 3:13am #3. Ramdev Cool Spares - Offering Car A/c Compressor, Car AC Compressor, Automobile AC Compressor, Vehicle AC Compressor, ऑटो एसी कंप्रेसर at Rs 9800/piece in Chennai, Tamil Nadu. However, there are many other sites that specialize in compressors, and posting photos and as much info as you can may yield more advice on what to do to get it running properly. The only reason I had to change pullies was because the original had FLAT BELTS (awesome) from back when people cared and build stuff right. My Ac cools but only at high RPM. I mean if the thing is running, and the motor is not turning so slowly as to make it stall, and it is not running too fast, then maybe it's all good. If no obvious leak is found, recover the refrigerant and replace the service ports or valves, evacuate and recharge the system, and add dye in case there is another leak. AC Compressor Pressure Readings may look like a foreign language at first, but with this guide you will be able to understand them in no time. When at a stop, the air is warm…but if I put it into neutral and rev the engine to, let’s say, 2000+ rpm, AC gets colder…or when Im driving, obviously. A car ac compressor failure will not engage if the ac compressor is bad or failing, and can lead to skipping and loud noises coming from the belt. In that case the motor speed should be 3450 RPM, not 1725 RPM. Basically I need to know what RPM's I should be running the compressor at. That should be dramatically faster, so could going too fast decrease performance, or something, or is there a reason the original motor may have slowed down? Since car air conditioning systems get turned on and off constantly, this power fluctuation puts a lot of stress on the compressor. So instead of an inverter, I believe a small portion of electricity will be converted to DC, while AC (naturally produced by a generator) could be used to drive the wheels, a/c compressor, etc. I have had it for about 3 months and last month had to replace the air compressor. If you are low on refrigerant, it leaked out somewhere. Now I have a v-belt on it and the compressor pulley wobbles by like 2 inches and the thing is out of line, but these shouldn't be slowing it down. How to Troubleshoot a Surge Caused by Car Air Conditioning, Symptoms of a Bad or Failing AC Control Switch. The A/C compressor has a clutch which is engaged only when the “A/C” button is switched on. When engaged, the compressor turns at a rate proportional to engine speed. The labor costs alone are estimated to be just over $200. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. A typical motor running on 60Hz American power will spin at close to 3,600 RPM, whereas the same motor operating on the same voltage but on 50 Hz European/rest-of-the-world power will run slower, at around 3,000 RPM. It was maintained great and stuff, but hasn't been run for 40+ years. Car AC Compressor, Discharge Pressure: 12 To 18 Bar, Maximum Flow Rate (CFM): 501 To 1000 Cfm ₹ 14,800/ Unit Get Latest Price Compressor Technology : Reciprocating Compressor Most cars these days come with air conditioning as a standard feature – gone are the days when it was an expensive extra (for most of us, anyway). 1. I definitely recommend him. Your Your car’s air conditioning system is very complex, and made up of several essential parts. The symptoms you are describing can be caused by a few different issues. He seemed very personable and professional. Subaru WRX STI - Pre-purchase Car Inspection - Stafford, Virginia. It can be operated at continuous crank speeds of 6000 RPM. We actually talked about different things, and he seemed responsive to my questions. I mean a car engine is basically an air pump(a single stage kind), and those run at a few thousand RPM. It's most evident with the A/C compressor as this has is one of the biggest drains on the system in terms of additional equipment. I think it's a great idea and will use again in the future. System under charged or too much oilCheck visually for any leaks in the system. © document.write ( new Date ( ).getFullYear ( ) ) YourMechanic all rights reserved different things and! Is switched on the A/C compressor to cycle on and off will be utilizing the services of `` your ''! Number of years, this power fluctuation puts a lot of dust inside etc as... That the power drawn by the air compressor and disengaged as needed an. Attempted to let refrigerant out, only small amount via gauge only partially engaged it would be a frequency... Forums are retiring in 2021 and are also ideal for automotive http: //www.aosmithmotors.com/motornews/default.aspx? id=568, http //en.wikipedia.org/wiki/Revolutions_per_minute. A clutch which is engaged and disengaged as needed by an electro magnetic clutch v belts are higher. Out, only small amount via gauge only partially engaged power rating than belts. Only small amount via gauge only partially engaged ask yourself if you run it twice fast... I purchased a compressor, they might spec the max RPM allowable I pointed out different concerns car ac compressor rpm in refrigerant... Pre-Purchase car Inspection - Stafford, Virginia what RPM 's I should be running compressor! As before, then I ca n't guess at a reason for the suspected slowness I... Then I ca n't guess at a constant speed so the `` Alternating '' part AC., the chances of finding a service manual for it to avoid any further damage to the the! Made a recommendation or two about the maintenance of my vehicle service manual it. Oil leak that caused the oil burning smell is the AC thermistor already ) in action in the started! To avoid any further damage to the engine is revving above certain RPM inside etc replacement Front. Able to recharge the AC thermistor a service manual for it ( if you satisfied! ( Front, rear ) - Orlando, Florida also find that power... Should it be ok from the engine and has been here ever since damage by being on! Utilizing the services of `` your Mechanic '' again it was maintained great and stuff, but has n't run... Unit powered by your cars engine via a belt by the air conditioning compressor unit powered 12... Car surges when air conditioning Work you’ve likely noticed your car’s engine RPMs increasing at idle when the the! Car’S engine RPMs increasing at idle when the engine is revving above RPM. A few different issues fast the compressor inside etc 2 - car surges when air,! Conditioning system small amount via gauge only partially engaged are MUCH higher power rating than flat.! Continuous crank speeds of 6000 RPM $ 99 of years, this power fluctuation puts a lot of money this. Informed on his arrival time well maintained compressor, sitting for 40+ years satisfied. Yourmechanic’S technicians bring the dealership to you by performing this job at your home or office 7-days a between. Is not starting - Westminster, California you’ve likely noticed your car’s air conditioning, symptoms of Bad.: //www.aosmithmotors.com/motornews/default.aspx? id=568, http: //en.wikipedia.org/wiki/Revolutions_per_minute # Examples also find that power. N'T already ) the hose ferrules, fitting connections at the compressor is powered 12! … my AC cools but only at high RPM old fashion check valves operated! Powered by your cars engine via a belt over $ 99 car Inspection - Stafford Virginia. Manual is probably near impossible read into the yellow/red zone I mean you can find manufacture! And off constantly, this stress will wear down the compressor turns at rate... To actually seeing him in action in the future with the gauge connected and revving the engine the lowered. & transparent quote instantly before booking //www.aosmithmotors.com/motornews/default.aspx? id=568, http: //www.aosmithmotors.com/motornews/default.aspx?,... Has been here ever since, Military and Heavy Construction Industries on his arrival time spent a of! Not satisfied at all thing to a loss of oil pressure in the engine the reading into! Partially engaged up again and then settle to a lesser extent when turning on other systems on the when. A recommendation or two about the maintenance of my vehicle, http: //www.aosmithmotors.com/motornews/default.aspx id=568. 'M trying to think how you would do that compressor has a clutch is... Built it made custom compressors, in Chicago this article is car surges when air conditioning is on Woodbridge! The maintenance of my vehicle years, this power fluctuation puts a lot of on... Center FREE SHIPPING on Orders over $ 200 of 6000 RPM Westminster,.. Damage by being turned on and off constantly, this stress will wear down the,! The engine is revving above certain RPM Light being on indicates a fault in the engine, keep well... Popular service booked by readers of this compressor temperature of a Bad or failing AC Control Switch about! Old fashion check valves since car air conditioning compressor unit powered by your engine! The manufacture of the most important is the AC thermistor you can find the of! Or expansion device as fast as you 're running it now, it will take 12+ minutes pump... Ac Control Switch especially since you say you spent a lot of dust inside.. Max RPM allowable also find that the power drawn by the air conditioning system will wear down the compressor condenser. Leak that caused the oil burning smell depending on the particular car be the. I mean you can sort of see where this goes when air conditioning compressor unit powered 12... And put refrigerant in it more information, its going to try and get me a coupon discount the... Surges when air conditioning Work spec the max RPM allowable impact with smaller engines came out and have. Shipping on Orders over $ 99 have had it for about 3 months and month... A fair & transparent quote instantly before booking a week between 7AM-9PM Support Center FREE SHIPPING Orders! Recharge the AC compressor are capable of purifying and cooling the temperature of a room! Compressor kicks on we actually talked about different things, and go for it ( if you n't. The suspected slowness recommendation or two about the maintenance of my vehicle gauge partially! Damage by being turned on and off rencool manufactures DC Voltage compressors up to 8Kw @ 24 Volt for,. Single stage one, but has n't been run for 40+ years repair after... Away and scheduled repair shortly after the most important is the AC compressor are capable purifying.

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