I don’t have enough air pressure, a visitor recently stated, and then asked how to turn up the cut out settings on their air compressor pressure switch.
The idea was that a higher pressure coming out of the compressor could, somehow, give more air flow.
Sorry. That’s not going to happen.
First off, the engineers that designed the air compressor designed in an upper pressure limit. That’s the high pressure setting that the compressor can produce, somewhere, typically in the 120-150 PSI range, though there are more industrially oriented air compressors that can generate more pressure than that.
Trying to turn up the pressure on the pressure switch so that the air compressor can build greater pressure than it was designed to will only mean that there may be an unsafe condition created – possibly too much pressure for the compressor components – or that turning the air pressure up past design limits will ensure that the air compressor will fail much sooner than it should.
If your air regulator is turned to the lowest air pressure at which the air tool works satisfactorily and in using the air tool at that pressure setting you keep running out of air, the problem is not one of pressure. If your air tool dies due to air starvation or you have to keep waiting for the air compressor to catch up – meaning it’s probably running all the time – then your air compressor is too small for the air demand of the tool(s) you are using. Period!
Adding a secondary tank will give you more run time for your air tool, but that will mean that the air compressor will run longer to try and fill two tanks, meaning you’ll wait twice as long between compressor fill-ups before you have enough air to run the air tool.
That will quite possibly mean that you will wear out the compressor sooner, particularly if you are exceeding that model’s duty cycle.
Simply, not enough air pressure to run the air tool means – assuming the air compressor is running normally – that your air compressor is too small for the job.