Page 55 - NG-1 1150, NG-1 1500, NG-1 2000, NG-1 3000 - Stand-Alone Nitrogen Generator System Installation Manual

Verify and document the serial number of the nitrogen generator(s): ________________________ Verify and document whether the nitrogen generator(s) is/are installed correctly: Yes No If No, explain: _________________________________________________________________________ Verify and document whether the nitrogen generator(s) is/are wired correctly: Yes No If No, explain: _________________________________________________________________________
Programming of nitrogen generator’s Pressure Transducer
Turn On/Off Power Switch to the “On” position
Verify and document the cut-in or turn-on pressure of the nitrogen generator is 3-5 psig (.2-.3 bar) below
operating pressure of the dry/preaction fire sprinkler systems’ air maintenance device(s): Yes No
If No, change the cut-in or turn-on pressure of the nitrogen generator to be 3-5 psig (.2-.3 bar) below operating pressure of the dry/preaction fire sprinkler systems’ air maintenance device(s) using the Pressure Transducer Programming Procedure.
Verify and document that the cut-in or turn-on pressure of the nitrogen generator is above the low air alarm pressure of the dry/preaction fire sprinkler system(s): Yes No
Verify and document the cut-in or turn-on pressure of the nitrogen generator: ______________________ Verify and document the cut-out or turn-off pressure of the nitrogen generator is 45 psig (3.1 bar) above
operating pressure of the dry/preaction fire sprinkler systems’ air maintenance device(s): Yes No
If No, change the cut-out or turn-off pressure of the nitrogen generator to be 45 psig (3.1 bar) above operating pressure of the dry/preaction fire sprinkler systems’ air maintenance device(s) using the Pressure Transducer Programming Procedure.
Verify and document the cut-out or turn-off pressure of the nitrogen generator: _____________________ Verify and document that the air inlet valve(s), nitrogen outlet valve(s), and bypass valve(s) is/are
operating properly: Yes No Verify and document the feed air pressure is between 150-175 psig (10-12 bar) and below, but close to
the air compressor cutoff pressure: Yes No Change if needed. Document regulator setting: ________________________________
Verify and document the instrument air pressure regulator is set to 95 psig (6.5 bar): Yes No Change if needed. Document regulator setting: ________________________________
Verify and document the nitrogen back pressure regulator is set to 85 psig (5.9 bar): Yes No Change if needed. Document regulator setting: ________________________________
TFP1275 Page 54 of 84