System Discharge
Slowly, discharge the system starting with the high-pressure side until the pressure drops below 345 kPa (3.52 kg/cm2 , 50 psi), then open the low-pressure side.
Slowly, discharge the system starting with the high-pressure side until the pressure drops below 345 kPa (3.52 kg/cm2 , 50 psi), then open the low-pressure side.