Atlas Copco LF 2 Instruction Book page 60

Testing on Trolley
1. Close the air outlet valves depressurize and disconnect the hoses from the valves.
2. Loosen the red handle of the pilot valve (1) and the two nuts (3)
3. Open outlet valve (AV1) a fraction. Start the compressor.
4. Gradually turn adjusting screw (2) clockwise while checking pressure gauge (Gp). If the safety valve has
not opened at the pressure specified in Compressor data, it must be replaced by a new one.
5. Readjust the normal working pressure after testing. Consult section Adjustment of pilot valve
6. Fit nuts (3) and handle (1) in their original positions.
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Instruction book
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