How a Refrigeration Compressor Works

The refrigeration compressor is at the heart of the system and works like a pump to ensure the unit receives the appropriate cooling. It is the most critical part of the unit that needs attention, and understanding how it works can help save you time and money.

Knowing where to get started is critical, so let's take a look at how the system functions and the three signs you need to call for repair.

4 Critical Components of a Compressor

The system is made up of four major refrigeration parts, which include:

1. Compressor

The compressor is a pump that increases the pressure and temperature of the vaporized refrigerant.

2. Evaporator

The evaporator is a refrigerator cooling component and reserves the heat from any contents inside the appliance.

3. Condenser

The condenser or coiled tubes cool the vaporized refrigerant and turn it into liquid.

4. Piping

Refrigerant piping comes in two sizes: smaller and larger. One is for the high-pressure liquid, and the other is for the low-pressure gas from the compressor.

How Does the Compressor Function?

Compressors work as a pump and a motor to move the refrigerant through the unit. Temperature sensors will signal for it to start, and as cold gas leaves the evaporator, it's drawn in. The compressor then applies pressure to the gas to compress it, making its temperature go up.

The gas is then expelled through the tubes on the bottom or back of the refrigerator, which allows the heat to dissipate, and the gas will change into a liquid as it begins to cool due to the pressure from the compressor.

The gas will continuously flow through the system until it reaches the expansion valve, which evaporates as it moves through the freezer coils and draws the heat out of the surrounding air in the refrigerator and freezer.

These coils lead back to the compressor, and more pressure is applied. The compressor then sends the gas back through the outside coils to release the heat, and once the temperature has met its set point, the process is completed.

3 Signs Your Compressor is Failing

Knowing when to call an expert starts with understanding critical signs that your compressor is experiencing issues, and the top three are:

1. Strange Noises

If the unit starts making any clicking, buzzing, or hissing noises, these are key indicators that the compressor is failing, and you must call for professional services.

2. Leaking Water

If the unit is sweating or you're finding water pooling around or inside, this is another strong indication the compressor needs attention.

3. Not Maintaining Temperature

If it's taking longer than usual for the fridge to cool or the food or beverages aren't as cool as they should be, chances are, the compressor is at fault.

Solid Refrigeration: Your Twin Cities Refrigeration Compressor Experts

The compressor is an essential part of the refrigeration unit, and safely handling it requires training and experience, and the team at Solid Refrigeration are your local professionals. Since 2005 we have been repairing and installing commercial refrigeration equipment in the Twin Cities, and our team specializes in custom units to meet your needs.

When you need a repair expert, get your free estimate online or call us at 952-854-2850.