Make sure the air inlet pressure gauge reads 100-125 psi (6.8-8.6 bar, 0.68-0.86 MPa). If the gauge does not read 100-125 psi, check the air compressor for proper setup.
Disengage the Emergency Stop.
Make sure the water tank is full and the inlet ball valve is open.
Increase the setting on pot pressure regulator.
Replace the pot pressure regulator assembly.