Buffer Tank Max Pressure was set to 250 psi (max allowed although Sam asked to change it to 999 psi).

1. “ The check valve here acts as a pressure maintaining device. For example, in a situation where the storage tanks outside are empty. This check valve keeps a minimum of 50 psi in the HR3’s loop and buffer tank.
   When the pressure in HR3’s buffer tank reaches 100 psi, the solenoid valve SV7 will open, allowing free flow from the buffer tank to the storage tanks. This will discharge the buffer tank quickly until the pressure reaches 80 psi, then it will shut.
   It will keep doing this until the pressure in the storage tanks outside go above 80 psi at which point the lower set point will never be reached and SV7 will stay open.
2. “The clicking that you hear from the HR3 may be the sound of the buffer tank unloading to the storage tank. The higher the incoming flow to the HR3, the higher the frequency of the clicking sound”.
   “ This model of recovery compressor is rated for 53 scfm at 125 psi. Any incoming flow above 53 scfm will be vented, but the compressor will continue to run and recover 53 scfm.”