Certainly, air compressors are too noisy tools. So loud, sometimes you need huge ear protectors to work comfortably. A too noisy air compressor can be a huge problem in some cases.
For example, if your neighbors can’t stand high noise or when you need to use your air compressor in a nighttime emergency.
If your compressor used to be quiet and today is a noise generator, maybe it’s time to do some maintenance. Fortunately, making an air compressor quiet isn’t that difficult. You just need to learn how to do it right.
In this article you’ll learn some tips to make your air compressor the quietest tool.
What is Air Compressor?
An air compressor is a tool used to generate high pressure air. Usually, it’s composed of an air pump and one or two air receiver tanks. When the pump starts, pistons make a reciprocating motion inside a solid steel cylinder. This movement generates the effect of suction and ejection.
According to the number of pistons, air compressors can be:
- Single-stage compressors.
- Two-stage compressors.
Single-stage compressors use a single piston to pump air. It’s the most common configuration used in small devices. Single-stage compressors have a limited capacity to generate air pressure, so they aren’t the best to run several pneumatic tools at the same time.
On the other hand, two-stage compressors use two pistons to pump air. The first piston sucks air from the outside and pumps it through a check valve. The second piston pumps air that passes through the check valve to receiver tanks.
Usually, air compressors use synthetic oil as a lubricant and coolant. The oil prevents wear of moving parts due to metal-metal friction. However, some compressors don’t require oil to operate. They allow you to save the money reserved for oil changes. However, their useful life is very short.
Step by Step Guide to Quiet an Air Compressor
You don’t need to send your air compressor to technical service to make it quieter. You just need the necessary tools and know the procedure to do it well. In this article you’ll learn everything you need to know to have the quietest machine.
1. Avoid Direct Contact with the Ground
When the air compressor vibrates against the ground, the noise waves amplify. So, you can easily solve this problem by installing rubber grommets on the compressor’s mount.
Rubber helps absorb the impact against the ground, also reducing noise.
2. Relocate the Air Intake
The air intake valve is by far the noisiest part of an air compressor. In enclosed spaces, like a garage, noise tends to amplify. So, what can you do in these cases? You can use an extra air hose to relocate the air intake.
Just attach a long hose to the air intake valve using a hose clamp. Then, locate the other end of the hose as far as you can. If you’re inside your garage, drill a hole in the wall to get the other end out. The noise could return through open doors and windows.
3. Use an Old Car Muffler
For best results, follow the above procedure and then install an old car muffler at the free end of the hose. Then, connect another hose to the air muffler. By doing this, the noise level may decrease up to 4 dB.
4. Tighten Nuts and Bolts
Loose nuts and bolts can add more vibration and amplify noise. Therefore, it’s advisable to tighten the loose parts periodically.
5. Clean the Air Filters
Dirty air filters make your air compressor to run harder. This makes the noise even louder. To prevent this, clean the air filters every 6 months or change them at the end of their useful life.
6. Keep A Good Lubrication
Periodically, check the oil level to ensure proper lubrication. Refill the oil tank whenever necessary. In addition, apply grease on the bearings and other moving parts that require extra lubrication. But, don’t apply too much to not interfere with their normal movement.
If your old air compressor stopped being quiet long time ago, you don’t need to buy a new one or send it to technical service to solve the problem. With the necessary tools and knowledge, you’ll be able to leave any air compressor as new.
The concept behind the operation of an air compressor isn’t so difficult to understand. The secret to learn how to repair an air compressor is to know well its operation. And the best way to learn is getting down to work and disassembling your own machine to identify each component.
If you follow these tips, you’ll certainly succeed in whatever repair project you have.