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Freezer - Heating & Cooling

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  • ahmed haroual Oct 05, 2009

    it a walking freezer (aja55 17exd) has about 6 lbs r22 new run cap start cap and relay.starts for few sec and quits,and starts overload starts ticking

  • ahmed haroual Oct 05, 2009

    the ventilators you mean the fins of condensing unit.the ventillation place is not bad in that area.the fins of condenser are clear.

  • ahmed haroual Oct 05, 2009

    the ventillation was not a problem

  • ahmed haroual Oct 05, 2009

    will a bad compressor acts like this starts for few seconds and stops.the resistance of C S and R is ok.

  • ahmed haroual Oct 09, 2009

    the capacitor is good ,the compressor is new.could it be a bad compressor to start with?

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Hi,

If your refrigerator starts and stops very frequently, you may have an overheated compressor. This refrigerator part is a component in the cooling system of the refrigerator. The reason for an overheated compressor? Take a look in the back of your refrigerator. The refrigerator parts you see clogged with dirt, dust, and grime are the condenser coils. These coils help dissipate heat. Any coating on the coils interferes with that process and can result in a major loss of efficiency of refrigerator parts like the compressor. Clean the coils, and monitor your fridge to see how often it starts and stops once the compressor load is lessened.

Also, check the compressor for fault.

Let me know, if need further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Oct 09, 2009

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A freezer is a devise in which to store food and keep the food frozen..
Keeping the food frozen is the best way to keep it fresh for longer periods of time..

Before mechanical refrigeration systems were introduced, people cooled their food with ice and snow, either found locally or brought down from the mountains. The first cellars were holes dug into the ground and lined with wood or straw and packed with snow and ice: this was the only means of refrigeration for most of history.
Refrigeration is the process of removing heat from an enclosed space, or from a substance, to lower its temperature. A refrigerator uses the evaporation of a liquid to absorb heat. The liquid, or refrigerant, used in a refrigerator evaporates at an extremely low temperature, creating freezing temperatures inside the refrigerator. It's all based on the following physics: - a liquid is rapidly vaporized (through compression) - the quickly expanding vapor requires kinetic energy and draws the energy needed from the immediate area - which loses energy and becomes cooler. Cooling caused by the rapid expansion of gases is the primary means of refrigeration today.
The first known artificial refrigeration was demonstrated by William Cullen at the University of Glasgow in 1748. However, he did not use his discovery for any practical purpose. In 1805, an American inventor, Oliver Evans, designed the first refrigeration machine. The first practical refrigerating machine was built by Jacob Perkins in 1834; it used ether in a vapor compression cycle. An American physician, John Gorrie, built a refrigerator based on Oliver Evans' design in 1844 to make ice to cool the air for his yellow fever patients. German engineer Carl von Linden, patented not a refrigerator but the process of liquifying gas in 1876 that is part of basic refrigeration technology.
freezer - refrgeratorpatent1.gifSide Note: Improved refrigerator designs were patented by African American inventors, Thomas Elkins (11/4/1879 U.S. patent #221,222) and John Standard (7/14/1891 U.S. patent #455,891).
Refrigerators from the late 1800s until 1929 used the toxic gases ammonia (NH3), methyl chloride (CH3Cl), and sulfur dioxide (SO2) as refrigerants. Several fatal accidents occurred in the 1920s when methyl chloride leaked out of refrigerators. Three American corporations launched collaborative research to develop a less dangerous method of refrigeration; their efforts lead to the discovery of Freon. In just a few years, compressor refrigerators using Freon would became the standard for almost all home kitchens. Only decades later, would people realize that these chlorofluorocarbons endangered the ozone layer of the entire planet.
History of Sealed Refrigeration Systems
One hundred years ago, refrigeration engineers began to search for a permanent solution to the problem of leaky refrigeration systems.

Posted on Oct 06, 2009

  • Carl
    Carl Oct 06, 2009



    Oh - did nor see the follow up comments - sorry..



    YES - a bad compressor could do exactly that. Start then stop..



    It could also be a bad capacitor..



    Have a great day !

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If the unit is placed in the compact place where the units hot air ventilation is blocked.it will cause this problem.try putting up the unit where proper ventilation is possible.also check that ventilators are not clogged.
thanks,keep updated and please rate the solution positively.

Posted on Oct 05, 2009

  • charlymonty Oct 05, 2009

    I suspect the defrost timer. Also your evaporator coil inside could be one big chunk of ice. This will cause the compressor NOT to blow out warm air out of the condenser coil.

    One of the main problems is the objects put into a position to block the airflow coming out of the evap coil. If it is not blocked, pull the cover to the evap fan and coil. If the coil is clogged with frost/ice, most likely it is the defrost timer. Some timers you can advance with a small screwdriver to physically put it into defrost but you then have to advance it again once the defrost is done. Most timers are about $50 +/- $20. As for the location, many manufactures find their own hiding places. Just got to look for it. Usually they are about 3" square and an inch thick with about 4 or 5 wires going to them.and are near to the compressor unit.

    If every thing looks fine inside the box, check your condenser coil. If it is blocked with ghost turds (dust/dirt/pet hair) , this can cause the compressor to lock out on its internal thermal protection. Clean coils by blowing out with an air hose. Be prepared for dirt to fly everywhere when you do this.



    check out .

  • charlymonty Oct 05, 2009

    keep updated.

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Hi

Thanks for using FixYa. Please explain the issue so that I can assist you, is it with the freezer or the air conditioner that you have selected. Please do revert with the problem so that it can be solved.

Thanks
Rylee

Posted on Oct 05, 2009

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