Page 30 - NG-1 1150, NG-1 1500, NG-1 2000, NG-1 3000 - Stand-Alone Nitrogen Generator System Installation Manual

System Power Loss
In the event of a system power loss, all programmed information in the nitrogen generator is stored in the nitrogen generator and the nitrogen generator will automatically restart once system power is restored.
• Where TAV-D vents are installed, the system will automatically return to Nitrogen Inerting Mode or Supervisory Gas Mode, depending on which mode the nitrogen generator was in when the power loss occurred.
o If the TAV-D vent ball valve is open (Nitrogen Inerting Mode), then the ball valve needs to be manually closed upon completion of the fourteen (14) day DPNI process. The air compressor and nitrogen generator will automatically transition to the Gas Supervisory Mode.
• Where TSV-D SMART vents are installed, the system will automatically return to the Supervisory Gas Mode. When the system power loss is during the fourteen (14) day DPNI process, the DPNI process will need to be reinitialized.
o Depress the “Vent” button on the SMART vent control box which energizes the solenoid on the SMART vent.
o The nitrogen generator and compressor will automatically cycle on operating in the nitrogen inerting mode.
o Upon completion of the fourteen (14) day DPNI process, the vents automatically close and the air compressor and nitrogen generator will automatically transition to the Gas Supervisory Mode.
TFP1275
Page 29 of 84