Relief Valve - Atlas Copco LT 2 Instruction Book

4. Gradually turn adjusting screw (2) clockwise while checking pressure gauge (Gp). If the safety valve has
not opened at the pressure specified in
5. Readjust the normal working pressure after testing. Consult section
6. Fit nuts (3) and handle (1) in their original positions.
6.8

Relief valve

Remove the relief valve and fit a G 3/8" plug instead. Remove the safety valve from the air receiver and
replace it by the relief valve. The latter can then be tested at increasing air receiver pressure after the
compressor has been started with the open air outlet valve. If the valve has not opened at the pressure specified
in section Compressor
after testing.
64
The relief valve protects the LP side of the compressor. No adjustment is allowed.
Testing: Testing as described below shall only be carried out by competent personnel.
data, it must be replaced by a new one. Reinstall the valves in their respective places
Compressor data, it must be replaced by a new one.
Instruction book
Adjustment of pilot valve
2920 7089 90