If your air dryer is not working properly, here are a few common issues that you may experience as well as how to deal with these issues.
#1 Compressor Malfunctions
If the compressor on your air dryer does not work properly, you need to check the oil reserve. If there is excess oil in the reserve, that means that the compressor for your air dryer may be releasing oil instead of using it properly. Test out the compressor and see if the oil continues to leak out. If the oil continues to leak out, you are going to need to replace the entire compressor.
#2 Air Dryer Temperature Is Too Hot
If the air dryer temperature is too hot, there are a few things that you are going to need to check and do.
The first thing that you want to check is the discharge line. You need to make sure that the discharge line is set up so that it continually slops downward. If the discharge line is flat, ice may have built up in the line and stopped the flow of air, resulting in air that is too warm. To fix this, you need to change the angle of the discharge line and you may want to insulate the discharge line so that ice doesn't build-up for any reason.
Second, you need to check and make sure that the air dryer has enough coolant. When the coolant is low, this can cause the air dryer to put out air that is just a little too hot. As you check the coolant levels, be sure to also check the coolant lines, and make sure that there are not any kinks that are limiting the flow of the coolant in your machine.
#3 Air Dryer Is Cycling Too Frequently
If the air dryer is cycling too frequently, your air dryer is most likely not holding pressure as it should. The first thing you want to do is check the gauges and see if the air pressure leakage is showing on the gauges. If the air pressure loss is not registering on the gauges, that means you need to check all the fittings and lines in the supply system. You may need to tighten the fittings, hoses, lines, or connections. There are numerous areas where the air can leak out, so when your air dryer keeps cycling, you need to take some time to identify where the air is leaking out and stop the leak.
Following these air dryer repair tips will put you well on your way to a well functioning air dryer.