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Nitrogen Generator Equipment
Verify and document the location of the nitrogen generator(s): ________________________
Verify and document the quantity of the nitrogen generator(s): ________________________
Verify and document the model number of the nitrogen generator(s): ________________________
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 Settings
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
Nitrogen Generator Pressure Adjustment 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 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 above operating pressure
of the dry/preaction fire sprinkler systems’ air maintenance device(s) and below 85 psig (5.9 bar) using
the Nitrogen Generator Pressure Adjustment Procedure.
Verify and document the cut-out or turn-off pressure of the nitrogen generator: _____________________
Verify and document that the bypass/nitrogen generation valve is operating properly: Yes No
Verify and document the nitrogen back pressure regulator is set to 80 psig (5.5 bar): Yes No
Change if needed. Document regulator setting: ________________________________
Open the isolation ball valve to the internal flow meter.
Connect the handheld gas analyzer (PHGA-1) to the gas sampling port of the nitrogen generator.
Allow the nitrogen generator to operate in nitrogen production mode for approximately five (5) minutes
to ensure proper operating temperature of the nitrogen generator prior to adjusting nitrogen purity or
measuring nitrogen production rate.
NOTE: The nitrogen generator will obtain optimum operating temperature faster if the nitrogen
generator cabinet door is closed.
Adjust to Flow Control Valve in the nitrogen generator to obtain a nitrogen output purity level of 98%.
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