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To start use a vacuum cleaner with a soft brush hose attachment to get rid of the loose stuff. Then you are going to want to use a degreaser/ cleaner to spray on the evaporator. I would suggest a foam based one [http://www.homedepot.com/buy/appliances/air-conditioners-fans-dehumidifiers/ac-safe/foam-coil-cleaner-22963.html|such as this] to keep the mess minimal. You may notice the product I suggested is self-rinsing, which means it will only need wiped off. To wipe it off between the fins use a fin comb. Fin combs come in different sizes and styles. To pick the proper one measure the number of fins per inch and purchase one that has the matching comb. Most of those are plastic. I could not find one like mine which is more like a disposable razor with different sized interchangeable blades. I've got 10 combs/blades for mine. [http://www.american-appliance.com/old_Site/images/image_data/fin_tool_kit.jpg|Click here] for an example of the plastic one I have. They seem to be coming in some kind of a rotating circle set up now. These can also be used for straightening out bent fins. They also make universal fin combs. Please [http://www.amazon.com/Adjustable-Fin-Comb-Comedium-Sealed/dp/B0002YTP3M/ref=pd_cp_hi_3|click here] for an example. The universal ones do a good job for cleaning ( I have one for that purpose only.), if the fins are not bent, I would not recommend using one to straighten bent fins. You will want a bucket of water and some paper towels for cleaning the comb between strokes.
 
Insofar as recommended maintenance. Clean and straighten out the inner and outer fins on both the evaporator and condenser. That will ensure good air flow and efficiency. Clean the fan blades and if the fan has an oil port add some oil (3n1 electric motor oil). If you have a clamp on amp meter use it to compare the amperage draw of the unit to the rated amount on the specifications plate provided by the manufacturer, if there is more than a 25% difference you may consider having it professionally serviced - if you are not happy with it's performance. Freon systems are closed systems and if they are leaking it is most likely through a compromised piece of metal or a joint. With age compressor motors do tend to draw less current, so a difference in plate rating and actual current draw does not always indicate a loss of freon in the system. You can do what is called a wet bulb test. Use a quick reacting thermometer where the air is coming in to be circulated. Take another quick acting thermometer, wrap it's sensing part with a wet paper towel. Lettowel, place it where the air is leaving the unit to "cool" the room. Let the AC run for 10 minutes. There should be approximately a 20F difference between the two if the system is in good order.
Insofar as recommended maintenance. Clean and straighten out the inner and outer fins on both the evaporator and condenser. That will ensure good air flow and efficiency. Clean the fan blades and if the fan has an oil port add some oil (3n1 electric motor oil). If you have a clamp on amp meter use it to compare the amperage draw of the unit to the rated amount on the specifications plate provided by the manufacturer, if there is more than a 25% difference you may consider having it professionally serviced - if you are not happy with it's performance. Freon systems are closed systems and if they are leaking it is most likely through a compromised piece of metal or a joint. With age compressor motors do tend to draw less current, so a difference in plate rating and actual current draw does not always indicate a loss of freon in the system. You can do what is called a wet bulb test. Use a quick reacting thermometer where the air is coming in to be circulated. Take another quick acting thermometer, wrap it's sensing part with a wet paper towel. Lettowel, place it where the air is leaving the unit to "cool" the room. Let the AC run for 10 minutes. There should be approximately a 20F difference between the two if the system is in good order.

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Aporte original por: ABCellars ,

Texto:

To start use a vacuum cleaner with a soft brush hose attachment to get rid of the loose stuff. Then you are going to want to use a degreaser/ cleaner to spray on the evaporator. I would suggest a foam based one [http://www.homedepot.com/buy/appliances/air-conditioners-fans-dehumidifiers/ac-safe/foam-coil-cleaner-22963.html|such as this] to keep the mess minimal. You may notice the product I suggested is self-rinsing, which means it will only need wiped off. To wipe it off between the fins use a fin comb. Fin combs come in different sizes and styles. To pick the proper one measure the number of fins per inch and purchase one that has the matching comb. Most of those are plastic. I could not find one like mine which is more like a disposable razor with different sized interchangeable blades. I've got 10 combs/blades for mine.  [http://www.american-appliance.com/old_Site/images/image_data/fin_tool_kit.jpg|Click here] for an example of the plastic one I have.  They seem to be coming in some kind of a rotating circle set up now. These can also be used for straightening out bent fins. They also make universal fin combs. Please [http://www.amazon.com/Adjustable-Fin-Comb-Comedium-Sealed/dp/B0002YTP3M/ref=pd_cp_hi_3|click here] for an example. The universal ones do a good job for cleaning ( I have one for that purpose only.), if the fins are not bent, I would not recommend using one to straighten bent fins. You will want a bucket of water and some paper towels for cleaning the comb between strokes.

Insofar as recommended maintenance. Clean and straighten out the inner and outer fins on both the evaporator and condenser. That will ensure good air flow and efficiency. Clean the fan blades and if the fan has an oil port add some oil (3n1 electric motor oil). If you have a clamp on amp meter use it to compare the amperage draw of the unit to the rated amount on the specifications plate provided by the manufacturer, if there is more than a 25% difference you may consider having it professionally serviced - if you are not happy with it's performance. Freon systems are closed systems and if they are leaking it is most likely through a compromised piece of metal or a joint. With age compressor motors do tend to draw less current, so a difference in plate rating and actual current draw does not always indicate a loss of freon in the system. You can do what is called a wet bulb test. Use a quick reacting thermometer where the air is coming in to be circulated. Take another quick acting thermometer, wrap it's sensing part with a wet paper towel. Let the AC run for 10 minutes. There should be approximately a 20F difference between the two if the system is in good order.

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open