When your air conditioning system’s oil takes on a dark hue, it’s a clear sign that something is amiss in your system. This issue can be attributed to several factors, and addressing it correctly is crucial for ensuring optimal system performance and longevity. In this article, we will delve into the reasons behind the darkening of compressor oil and provide solutions to this problem.
Why Does Compressor Oil Turn Dark?
Let’s start by understanding the potential causes behind the darkening of air conditioner compressor oil:
1. Pressure Overload
Compressor oil may turn dark when your air conditioning system operates at excessively high pressures over an extended period. This elevated pressure can lead to the creation of tiny carbon particles in the oil, resulting in its darkened appearance.
2. Compressor Overheating
If your system’s compressor experiences internal overheating, the oil can become scorched, leading to the production of carbon particles that darken the oil.
3. Moisture Contamination
In certain instances, the oil may take on a light brown color with white streaks due to contamination by moisture. This kind of contamination can be detrimental to the system and reduce its lifespan.
What to Do When Compressor Oil Is Dark?
Here are some recommended steps to address the issue:
a. System Cleaning
The initial step should be to perform a comprehensive cleaning of your air conditioning system. This process involves removing the contaminated oil and cleaning the pipes and various components.
b. Oil Replacement
After cleaning, it’s imperative to replace the oil with new, high-quality oil. Ensure that the oil you use is suitable for your specific air conditioning system. It’s important to note that the most common practice for determining the amount of oil to replace is by referencing the amount of old oil present in the compressor. Typically, you should add approximately 30% more oil. However, if you have the manufacturer-recommended oil measurement, it’s best to use that precise quantity.
c. Filter Inspection
Inspect and replace the system’s filters as needed. Clogged filters can contribute to oil contamination and negatively impact the performance of the compressor.