Step 1:
Calculate if there is an air pressure drop between the FRL and the tool.
- First, read the FRL gauge value
- Secondly, measure the dynamic pressure at the tool’s inlet
- Then, calculate the difference between the two values to see if there is a drop in air pressure between the FRL and the tool
Step 2:
Identify where pressure is being lost by checking that your accessories have been selected and installed properly.
There are various points to inspect, the main ones being: at the tool inlet, the couplings/nipples and hose connections, as well as the FRL.
To avoid pressure drops you want to make sure that:
- Accessories have the correct diameters and thread sizes/types
- The hose is no longer than needed
- Clamps are properly tightened
Step 3:
Final measurements and adjustments.
Once you are confident that all accessories have been selected & installed correctly, measure once more the dynamic pressure at the tool’s inlet.
You can then adjust accordingly the FRL regulator to ensure you get a reading of 90 psi / 6.3 bars at the tool inlet.
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