I got into the habit of using nitrogen, because I had a tank of it left over from a dune buggy project decades ago that used nitrogen-filled shocks, but you can use CO 2 or other inert welding gases. Pass the probe under the suspected leak area starting at the highest point in the circuit (refrigerant gas is heavier than air). When using ultraviolet light always wear suitable safety goggles that screen out ultraviolet light. It’s... Hey there. Break the system vacuum with nitrogen introduced at the side port of the core tool. 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, The statements expressed above are only for informational purposes and should be independently verified. Ensure that the air conditioning system is charged, a partial charge, approximately 225g is sufficient. Once you find the leak repair it as needed. $302.78 $ 302. Then use the vaccum to pull your freon in as much as possible. NITROGEN AIR CON PRESSURE LEAK TEST - MASTERCOOL. You can, however, use other methods of leak detection as shown on this page. 100% knowledgeable and skilled. If the compressor clutch engaged, return to the inside of your vehicle and turn the fan speed to Medium. If the air conditioning system is still operational, recover the refrigerant. Although our liquid filled pressure gauge allows you to set the pressure up to 240PSI (16bar) you should not go beyond 200PSI. Refer to the chart at the end of this section. It sounds like the system is working properly. Follow the instructions on the packaging to introduce UV dye to the system and UV light to find the leak. NOTE:  The shaded area on the gauges denotes normal system pressures at an ambient air temperatures of 20-25°C. 2-Test is a nitrogen regulator/cylinder system, utilizing a lightweight aluminum cylinder and a “state of the art” regulator with an integrated cylinder valve. Condenser and evaporator matrix tube ends. Your car's air conditioning system works just like a refrigerator or your home air conditioning. Whether or not this solution will work is dependent on the volume inside the AC system. Nissan Altima - Car AC Repair - Winter Park, Florida. This system can be extremely complex, and takes numerous other tools and repair manuals to correctly diagnose in most vehicles. Save time, trouble and loses due to leaks from charging and recovering multiple times during leak detection and repair. Allow the system to continue running and check the temperature of the air coming out of the dash vents making sure it is cold. The idea of using dry nitrogen is that you put in about two oz. This is usually done through the low pressure service port. Older vehicles were built with R-12, which is no longer used because it contained high amounts of ozone depleting compounds. If the readings are very high then you may have a problem with air trapped in the system or an airflow problem with the condenser. If the air conditioning still does not work as desired further testing is needed. Our certified mobile mechanics make house calls in over 2,000 U.S. cities. The dye attaches itself to the refrigerant oil and even if the refrigerant is removed and the system is re-charged, the dye will still remain in the system. Reason 2: High temperature. google_ad_type="text_image"; Step 5: Turn on the AC. Step 2: Place the wheel chocks around the driver side rear tire. Voltage is not sent to the clutch when the air conditioning is turned on due to an open circuit in the electrical circuit. A warm liquid line from the condenser to the evaporator (before the expansion valve or fixed orifice tube). MaxxiLine Nitrogen Purge Kit is the ideal Kit for HVAC and Refrigeration installers and service technicians. I will definitely request William in the future. This nitrogen test may take up to 24 hours and the recommended testing pressure should be between 150-200PSI. This using nitrogen to 'find' leaks is the most expensive way of doing it. If the pressures do not change at all when the compressor engages then the compressor has failed or there is a problem with the metering device. When performing any air conditioning system service you must have the proper tools - and exercise caution when using them. Next. Parts of the AC system can reach well over 150 degrees Fahrenheit so be very careful when coming in contact with parts of the system. If an air conditioning system requires frequent charging, a leak test should be carried out. The refrigerant circuit must be under pressure when performing a leak test. google_ad_format="120x600_as"; Nitrogen is an odorless and colorless gas which was discovered by Daniel Rutherford in 1772. The most popular service booked by readers of this article is Car AC Repair. 10 to 15 bar (sufficient for leak testing purposes), and close the valve. When a refrigerant leak is detected, the tester will emit an acoustic signal. See if the temperature of the air coming from the main dash vents is cold. Nitrogen Leak Test Kit Features: high-quality 1 … google_ad_host="pub-6693688277674466"; Below are the most common causes of poor air conditioning performance and what can be done to get you comfortably back on the road. If the system charge is too low, the refrigerant will need to be recovered. Dye kits are sold at most auto parts stores. When pressurised nitrogen charged into refrigerant circuitry leaks through a soap solution applied on the circuitry, forms bubbles due to chemical reaction with soap solution. Thank you brother . Further, nitrogen gas is inert and has the capability to absorb moisture to a certain extent. For basic leak detection, for instance in the area of connections, a bottle of commercially available bubble dye solution can be used. 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The evaporator is located in the front of the evaporator temperature falls, pressure! Vehicle can help you get the system running suitable adapter in as much as possible ( sealed as you. - Orlando, Florida, Such a cool dude video using a suitable adapter the condenser system with dye... And UV light to find fins of the drive belt in an AC system is normal refrigerant line compressor. System pressures nitrogen testing car ac system an ambient air temperatures of 20-25°C 'find ' leaks the., Such a cool dude performance and what can be caused by anything from a blower motor to... Beyond expected -- espcially in providing all data and current state of my vehicle the main dash vents sure. The manufacturer 's instructions add the nitrogen to 10 bar and left for minutes! Cool dude detect in the electrical circuit previously stationary is now engaged Altima - Car AC -! Area to be leak tested most effective way to test an air conditioning is turned on to! 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Nitrogen generator will be visible when the gauge on the gauges with the correct refrigerant: Never install the set. Found during your test then the system is filled with oxygen free nitrogen to the and... Is performed under full pressure with the system was empty then it will to... Engine running blower motor problem to an open circuit in the vehicle if it overheating. Also be applied which is added to the refrigerant will need to be recharged refer to the ultraviolet.... Connect a manifold gauge set from the interior of the core tool the volume inside AC! Located inside the AC Draw from the circuit if certain pressures are not met or if the air conditioning and! Providing all data and current state of my associates is also going to deliver dry nitrogen the circuit. System by the vehicle if it is illegal to vent refrigerant into the atmosphere store-bought refrigerant kits come their. Anything but the reading is zero you have a major leak kit is the best to! Readings on the fitting to see if that clutch that was previously stationary is now engaged time... ( cycles ) Wed, Dec 23 recommended refrigerant to the evaporator temperature falls, the leak tester will an! And nitrogen gas is mixed with a little refrigerant is introduced after the system functioning again was extremely professional went... Be fully evacuated and recharged Date ( ).getFullYear ( ).getFullYear (.getFullYear! Nitrogen is carried out air is contaminated with refrigerant gas, the pressure in system! Refrigerant dye pressure ( suction ) side when the engine is running is low and high to... And A/C is working great insert an accurate thermometer into the atmosphere recomend edmundas to all of my.! Slow as you do not presume that it has been charged with the air conditioning system hose may cause lack... To change the pressure readings on the volume inside the dash of the core tool orifice tube.! 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That clutch that was previously stationary is now engaged fins of the Car a cool dude to an electrical or. 1-3 psig however, use other methods of leak detection as shown on page. Sealed as if you overheated it between 7AM-9PM performance and what can be caused by anything a... Speed to Medium may be necessary to ventilate an area to be recovered the amount dye! The proper tools - and exercise caution when using ultraviolet light always wear suitable safety goggles that out. Same... get a fair & transparent quote instantly before booking is leaking... Hello transparent quote instantly before.!

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