Basic Troubleshooting Tips for Your Automotive Air Conditioner

Bloged in aircompressorparts.air-compressor-guide.info by itbsuperrich Saturday July 5, 2008

If your automotive air conditioner isn’t working quite right, here are a few ideas to begin. First of all start with the control panel on your dashboard. Most automobiles have an A/C button that actually turns the compressor on and allows cold air to be circulated. You might have accidentally hit the recirculation button instead of the A/C button. (Don’t laugh, I had a friend that spent a week in a hot car and all he needed to do was press the right button.)

The second thing to check is the actual function of the controls. Do they move at all? Are they loose and giggle around? The big question is “do they feel different from the last time your air conditioner worked?” This could tell if the controls are messed up and need replacing. Your air conditioner system may be fine but the controls could be frozen or broken. If your controls seem to be functioning, lets move to the blower fan. Turn on your car and start you’re air conditioner as you normally would. Then turn your blower to it’s highest setting. Can you here your fan blowing? If you can hear it, does it sound weak or whining. This could signal that your blower motor is malfunctioning or needs to be replaced. If it doesn’t work at all, check the fuse for the blower motor. The fuse for your blower motor should be located in the fuse box under the dash.

Most automobiles have the fuses clearly labeled. First take out the blower fan fuse with the removal tool provided in the fuse box. A blown fuse should be easy to identify. However if you are unsure, replace it with a similar rated fuse and try your blower again. If that fuse blows you may have a bad blower motor or a short in the circuit. In this case, you will need an authorized mechanic to fix it.

If the blower fan is working properly and you can only get cold air out of the defroster vents, you may have vacuum-system supply line problem. To check for this, look for a small black plastic tube going from the engine area through the dash. It is usually right by the refrigerant lines. Check this tube and see if it has holes or is not connected. If all of these little tips are not helping and you’re A/C doesn’t blow cold air no matter how many switches you turn on or off, you will probably need an certified mechanic. Good luck and stay cool!

Jason is the webmaster for Red Hill Supply - Online Air Tools

Automotive Air Conditioning Tools, Refrigerant Leak Detectors, and More - Red Hill Supply

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A Look at Industrial Air Compressors

Bloged in aircompressorparts.air-compressor-guide.info by itbsuperrich Friday July 4, 2008

Manufacturers and industry alike depend on the services of industrial air compressors. Most industries that use air compressors use high quality industrial-grade models. These models are different, more powerful and more expensive than ones that are used for lightweight jobs and for regular homeowners.

Industrial air compressors can be fueled by either natural gas or electricity. Most industries use natural gas to power their air compressors. Even though both types of energy used to run these industrial air compressors can be costly, many businesses find that using natural gas as a power source greatly reduces their utility costs.

Most industries use a two-stage type of air compressor for their needs. Generally speaking, this type of industrial air compressor is built for heavy-duty jobs. These offer a much higher level of air compression, as compared to smaller or compact models. Industrial air compressors usually also offer the ability to store unused air for future usage. These also can be more energy efficient because they run on a higher level of horsepower than other models; this increased usage of horsepower also creates a better working machine that is less likely to break down and requires less maintenance.

As with the purchase of any type of air compressor, those purchasing industrial air compressors need to be especially cautious of safety and quality standards. Very few industries are legally allowed to buy air compressors that are not certified by the American Society of Mechanical Engineers (ASME). Increased workplace safety and liability concerns have made it necessary for most companies to purchase high-quality, certified-devices to ensure the well-being of their employees. Some safety features may include a safety valve to use in the case of excess air pressure in the unit. The valve will automatically release air, therefore decreasing pressure, in the event of an overload of power. Without this safety device, users of the machine run the risk of causing an explosion.

Air Compressors Info provides detailed information about portable, industrial, engine-driven, 12 volt, and used air compressors, as well as air compressor parts, manufacturers, and more. Air Compressors Info is affiliated with Original Content.

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It’s FRL on Purpose, Folks!

Bloged in aircompressorparts.air-compressor-guide.info by itbsuperrich Thursday July 3, 2008

FRL is an acronym for Filter, Regulator and Lubricator, devices used to “condition” the compressed air from a compressor before it gets to your application be that through an air valve to air cylinders, powering air tools and so on.

When called in to troubleshoot a complaint from a client that their compressed air filter, regulator or lubricator wasn’t working, the first response is to ask the symptoms. Common complaints are, “the regulator is not working, and it’s leaking oil”, or “my air filter fills up too quickly”. Have you ever had these problems?

The acronym FRL is placed in this order deliberately.

These air treatment units, whether they are an assembly (combination FR + L) or a number of single components - Filter + Regulator + Lubricator - installed in a row, must always be installed with the Filter first, the Regulator next, and the lubricator last.

The filter must ’see’ the air coming from the compressed air supply line first, as it’s the defense against compressed air-borne water and particulates. If you think about it, you would want the filter to remove contaminants and free water from the compressed air before that air gets to more sensitive down-stream components, including the regulator and the lubricator.

The regulator is installed after the filter to ensure that the air getting to the regulator is as clean as that type of compressed air filter will allow, thus increasing the life span and mean-time-between-failures for the regulator.

The regulator’s purpose is to regulate a lower pressure to the downstream application. Some folks are of the opinion that the regulator can be used to “dial-up” the pressure. This is true, as long as it’s understood that the pressure that’s being selected is at a level below the upstream supply pressure. You cannot use a regulator to increase the pressure downstream higher than the supply pressure upstream of that regulator.

Compressors are usually cyclic, meaning that the air pressure in the lines from them varies according to where the pressure is in the compressor receiver. When the air pressure in the compressor receiver falls to the low level set point, the compressor will kick in, and bring the pressure in the receiver up to the high level set point, at which point the compressor will stop. This cycle repeats, sometimes quite quickly, depending on the compressed air demand in the shop. A regulator will dampen the pressure swings from the system as the compressor kicks on and off, ensuring that your application, if the regulator pressure is set at the correct level, will see a constant, steady pressure.

If the regulator is incorrectly installed, upstream from the filter instead of after it, not only is the regulator not protected from air-borne water and particulates, it will negatively affect the flow of air to the filter, decreasing its effectiveness.

The lubricator’s purpose is to provide a steady, metered stream of the appropriate lubricant to the downstream application, be that an air tool, or an air valve / cylinder combination.

The lubricator is installed last in the FRL series to ensure that the lubricant has ready access to the components desired to be lubricated though many modern pneumatic circuits may not need a lubricator at all, what with the high cycle type lubricants that are commonly used by air actuator manufacturer’s.

If the lubricator is incorrectly installed after the filter and before the regulator, the lubricant flow will negatively affect the operation of the regulator. The regulator may be over lubricated to the point where it doesn’t work properly. This may be the cause of the “lubricator’s all gummed up and not working properly” complaint. Most compressed air regulators are relieving type, and if the lubricator is “feeding” lubricant to the regulator, lubricant will wick from the relieving port, hence the “regulator’s leaking oil” complaint.

If the lubricator is installed upstream from the filter and the regulator, the lubricant stream from the lubricator will simply be intercepted by the filter, and not get downstream to the application at all. Thus the filter is “filling up too quickly” complaint.

In the absence of the lubricator, the correct installation if filter first, then regulator.

If the unit you have is a combined filter regulator, it’s internally plumbed to have the air filtered through the filter ‘half’ before the compressed air gets to the regulator.

Remember, it’s FRL on purpose!

Bill Wade is a former sales representative, sales manager, marketing manager and president of companies that use and sell compressed air, along with other equipment and supplies. His sales agency currently represents a select group of companies. Mr. Wade writes about understanding compressed air, how it’s compressed, how it’s treated, and how it’s used at http://www.about-air-compressors.com.

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