What happens if you overcharge AC system?

What happens if you overcharge AC system?

Having too much refrigerant in your AC can damage the compressor. This can happen because the excess refrigerant will likely collect inside the compressor and cause subcooling, wherein temperatures are below normal. Furthermore, the extra refrigerant can flood the compressor and damage its mechanical parts.

How does R12 refrigerant return to the compressor?

Firstly, there is no problem of the oil return back to compressor. Some particles of the oil from compressor tend to get carried away with the discharged refrigerant, because of the property of miscibility of R12, these particles return back to the compressor easily.

What’s the difference between R12 and R22 refrigerant?

Since R12 has the molecules of chlorine and fluorine, it is called as chlorofluorocarbon (CFC). R-12 is a highly versatile refrigerant that is used for wide range of refrigeration and air conditioning applications though in many air conditioning applications it is now replaced by R22 refrigerant.

Why does a refrigeration system have redundant compressors?

As depicted with a site in Figure 1, many refrigeration systems have redundant compressors for a refrigerated or frozen space which mask the issues of a compressor short cycling since the space is able to maintain the set temperature.

What happens to energy when a compressor is short cycling?

In addition to repair costs, any compressor that is short cycling will consume a great deal more energy and the controlled space rarely reaches set point. Operating in this condition can consume 20-50% more energy a hidden cost that is rarely linked to the problem.

Why does the R12 compressor work harder than the R134a?

Though, it’s not that simple. The reason is that the R134A runs at a higher pressure due to the size of its molecules being smaller when compared to those of the R12. Just filling your compressor with the R134A would cause your compressor to work harder due to the increased pressure and eventually create a leak to seal.

Do you need to know the pressure on a R-12?

If you are working on an R-12 machine you are going to need to know your pressures. Let’s take a look at our pressure chart. (Note that the first few pressure values are in Vacuum inches in Hg.):

How much refrigerant do I need for a R12 Charger?

If you are charging the system with R-134a, then the amount of refrigerant required is 80-90% of the R12 refrigerant amount required by the system. Two lubricants are being used commonly with the R12 retrofitted systems, these are: PAGs and esters.

Which is the best way to convert R12 to R134a?

There are two ways to convert your car’s old R12 system to R134a: The factory method and the easy method. The factory method is the best choice because you’ll replace parts that are probably leaking due to age. Plus, you’ll get the best AC performance using the factory method.