The way to succeed as an air compressor and what you can do about it

air conditioner compressors do not usually one of two conditions: time and hours of operation (wear) or abuse. There are some errors that occur in other parts of the system will cause a compressor, but these are less common, unless the system has been abused in essence.

It is usually a result of the abuse charge freon improper operation, or as a result of improper maintenance on the road. This lack of maintenance are overloadedDrain, installation of the wrong starter capacitor as a replacement, since the (rather than the repair / replacement) of the thermal limiting, too little oil, mix incompatible types of oil or wrong, the installation of the compressor in a system that is a great burnout without adequate steps had to remove the acid from the system, installing the compressor wrong (too small) for the system or installing a new compressor in a system that some other error, which have never been diagnosed .

Air

L 'Compressor can fail in only a handful of different ways. There can open, shorted, there is an error or a failure of the bearing of the piston (throw a stick), or an error occurs valve. This is practically the entire list.

If you do not open a compressor, a wire inside the compressor breaks down. This is useless, and the symptom is that the compressor is not running, although it may buzz. If the compressor is not to open and address the steps are not here, then the system is a goodCandidate for a new compressor. This error does not cause disruption and further damaged the rest of the system when the rest of the system would not go down so it will be cheaper, just a new compressor to be

Test for a failed open compressor is simple. Pop the lid of the electric compressor, and remove the cables and thermal limiting. With an ohmmeter, measure the impedance from one terminal to another in all three terminals of the compressor. The measureImpedance of the compressor case for all three terminals.

Values ​​should be low impedance for all terminals for connecting the terminal (a few hundred ohms or less) to read, and you should have a high impedance (several kilo-ohms or greater) for all terminals in the ( the earth) have. If a terminal connected to the terminal, a very high impedance, a compressor has failed open. In very rare cases, a failed open compressor low impedance to earth of a showTerminal (one of the terminals are not associated with open). In this case, the moves broken wire and the contact with the case. This state - are very rare, but not impossible - it could cause a switch to travel and could result in misdiagnosis of quick success. Be careful here, this is a test of the contents of the rows before deciding how to proceed with the repair.

When a compressor is not short, what happens is that the insulation on the wires or burn downon or inside the compressor broke. This allows a thread of a motor winding to touch something that should not touch it - usually run one or two more than the engine. This leads to a "short-circuit load, the compressor will stop immediately, because the heat and burning inside.

Bad bearings can cause a non-short. Or enough to swing the rotor stator, causing damage to the insulation that shorts the rotor with the ground or on the stator,wear or end, you can start the stator to climb over time, until it ends at or rub the stator housing.

Typically, these occur when a short is not a hard fire immediately - which means it is the first contact is intermittent and comes and goes. Every time there is lower, the stronger of the pair compressor, the compressor can be a little shudder as the visible result, and thrill shakes his clearance sufficient to separate the short. During the short is present,the current effort by the short circuit winding and a lot of heat is generated. The short wheelbase is usually some sparks - the acid produced in the HVAC system by splitting the Freon in a mixture of hydrochloric acid and hydrofluoric acid.

Over time (maybe a couple of weeks, usually less), goose bumps and the sparks and heat insulation and cause acid to fail fast on the settlement. At the end loses sufficient insulation, the interiorThe compressor is literally burning. This will be for a few minutes, but this time the compressor is destroying himself and the system is filled with acid. Then, the compressor stops. You can melt a wire at this time and just relaxed to the case (a trip of a switch main building) or not. If the initial cause of the error was so bad stock to rub the rotor, it is usually when the thing finally dies with the body will be short-circuited.

If shorts to the case,blowing fuses and / or power switch and your ohmmeter will show a very low impedance of one or more laps around the earth. If it does not short the container is not, then it will just stop. You do not have to create the type of error with an ohmmeter.

It is not possible to directly hit a diagnosis with an ohm meter short shorts, if necessary - is a short-circuit winding is not shown, with an ohmmeter, though with an inductance meter (? But who has one) Instead, you must close the failedshort. They do this by setting the ohmmeter are normal values, the start capacitor is good, the benefit depends on the compressor, and a test shows the Freon acid.

With one failed to give a quick, easy. Changes everything, including lines, if possible. It is not worth fixing, is full of acid and then everything is rubbish. In addition, a short would be the first in the system by some other mistakes that led to an overload of the compressor, tradethe whole system are also others to get rid of potential problem.

Less frequently, a compressor bearing failure is the failure of the piston or a malfunction of a valve. This may wear down mechanical failure as a rule, but only the signal of abuse of the signal (low level of lubricant, thermal limiter removed so overheated compressor, repaired chronic condition resulting from the loss of a Freon-). Less frequently, can be another error in the system as a matter of switching valve or a valve problem of expansion of the signalthat winds can get liquid refrigerant in the suction side of the compressor.

If a field, you usually know why the compressor is a motor with a bad bearing sound or stops and refuse to run. In the worst cases, the rotor begins to falter, the coils are rubbing on the stand, and you end up with a failed short.

If the compressor is mechanically locked and will not run, you'll know because the volume may be busy for a few seconds and shudder(As each engine is off) until the temperature limiter that stops. If you want the electrical controls, you will find no reference to not open or short. The litmus test will show no acid. In this case, you can try a hard start kit, but to begin when the compressor does not have the kit is mechanically hard-start the compressor. In this case, replacing the compressor is a good plan until the rest of the system is decrepit. After replacing the compressor, it must be carefullyAnalysis of system performance to determine if the problem of the compressor was caused by something else.

Rarely, the compressor experiences a failure of a valve. In this case, it is sitting there and seems happy to run, but no liquid pump (valve closes), or closes due to an inability to move the liquid from the compression chamber (valve open). If you are happy, then once it was established that there is actually very freonSystem, but nothing moves, then you have no choice but to change the compressor. Again, a system with a compressor, a valve failure was a good candidate for a new compressor.

Well, if the compressor is mechanically locked up for what could be a few things. If the compressor of a heat pump, make sure that the valve is stuck halfway. Also make sure that the expansion valve is blocked when you can to stop the compressor. Also, make sure that the filter isare not clogged. I once saw a system that had a closed compressor with liquid. Some idiot was "expected" the system by adding freon and freon, and adding freon until the matter was completely filled with liquid. Trust me, this does not work.

If the diagnostics indicate a clogged filter, then this should be considered a positive test of some errors in the system other than a failure of the compressor. Typically, the fragment of metal from the compressor, the filter is clogged. This canonly happen if something caused the compressor will consume very quickly, especially in the rings, pistons, bores and bearings. Either the compressor is highly insufficient lubrication or (and more) is in liquid freon compressor to the suction line. This behavior must be stopped. Look at the expansion valve and the valve (for a heat pump).

Often an old system experiences mechanical wear enough internally that is "worn" and needsmore torque to start can be supplied to the load as the system. This system ringing as a fixed bearing compressor with a sound that loud for a few seconds, then the thermal limiter will kill them. From time to time the system boots properly when the compressor is whack with a rubber mallet, while it is humming. This system is a good candidate for a hard-start kit. This kit allows you to save energy and, if the compressor starts telling dumps extra energy for the compressor a second or so. This overload of the compressor, but some additional torque for a short period and is often enough to make the compressor run again. I had to hard-start kit gave me an extra 8 or 9 years, in some units that would otherwise replace me. On the contrary, I had only a few months. It 's the call, but considering how cheap it is a hard-start kit, it is worth trying if the symptoms described.

This in a nutshell, is what can happen, a> Air compressor and what you do.

The way to succeed as an air compressor and what you can do about it