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The pressure in portable air compressor turns out to be a problem for many users. There is more than one easy control for this aspect, and it’s very confusing. But changing the pressure level is not that complex. Just a little basic knowledge, care and focus, you can have it at your hand.
Portable air Compressor and Pressure switch
There are two basic concepts that come with every air compressor: cut-in and cut-out pressure. Cut-in is the level of pressure when your device starts compressing and storing the air. As you can guess, the cut-out pressure is the degree when it stops charging and you can use the compressed air. The controls for both of them are placed in the pressure switch.
Any changes made to either one of these above levels will affect differential pressure. This is the range between the levels of cut-in and cut-out. The bigger distance indicates a longer period between when it starts and stops. In contrast, a smaller range causes your portable air compressor to repeat work cycle faster.
Be Careful before Examining
The pressure switch isn’t a fun thing to play. Inappropriate pressure can lead to energy-wasting. Just one bar higher than normal level can consume a lot of energy. Just make sure the need of your work is higher than the current support of your machine. Then changes should be made. Otherwise, don’t do it even you’re curious.
Turn off you machine! Remember that the entire portable air compressor is metal. Even if the material is insulated, you’ll be working very close to the source of power. It’s easy to be paralyzed or get an electric shock. And things will get worse if the compressor suddenly works while you’re making changes.
Changing the pressure can affect the production and the compressor itself. An unnecessarily high pressure increases the chance of breaking your machine. The entire system can get errors because of some tiny extra adjustments. So just do it when it’s a need for your work.
Now you can touch the pressure switch to start investigating. After opening the switch to look inside, you will see an interesting structure. But not all the pressure switches are similar. So which types of pressure switch do you have?
Types of Pressure switch
This is not about different styles or structures of a pressure switch. This is for the differential range in the switch. A pressure switch in portable air compressor can have two distinct models: fixed and adjustable.
With a fixed range pressure switch, the cut-in pressure is in your control as always. But you can only move the differential range up or down, not lengthen or shorten it. That means if you move it up, both the start and stop pressure will go up accordingly. This type is the best choice for amateur users since customizing the range is risky.
For those who are familiar with portable air compressors, adjustable range pressure switches are more favorable. Like its name, you can change anything from the start and stop pressure to the distance between them. With this type, you can become a power user.
How to check my air compressor? It’s very easy. An adjustable range pressure switch has two screws and one nut. The nut is for the differential range. The two screws, from left to right, are controls for cut-in and cut-out pressure. Meanwhile, fixed styles have only one screw for the cut-in pressure adjustment.
There may be some exception about the structure of a pressure switch. But overall, it’s the most common settings. Now, let’s move on to control your switch.
How to Control the Pressure in Portable air Compressors ?
This is the most difficult part. But when you have the knowledge above, you can do this job seamlessly. Remember, change the cut-in pressure first.To customize the pressure level that the compressor will start, hold the left nut. Turn it clockwise to increase and counter-clockwise to decrease. When you do it, watch for the work’s need. Leave an extra of 0.1 or 0.2 bars, but not more, to guarantee the best performance.
Things go the same for the cut-out screw. Increase or decrease it to have the maximum pressure that your machine will stop compressing. But it will also affect the differential range. It changes the idle time between two states of your portable air compressor. Be sure that it isn’t too short or your device will have many quick restarts.
Finally, if you want to move both the cut-in and cut-out level while keeping the range, turn the adjustment nut. It gives you the desired start time while keeping the differential pressure safe.
Now you can change the pressure in your portable air compressor on your own. It’s not difficult anymore. But remember that you can create difficult situations if you are careless. Read the device’s instruction and this post will help you have the best changes you want.