Page 51 - NG-1 100, NG-1 250, NG-1 500 - Wall-Mounted Nitrogen Generator System Installation Manual

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 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.
NOTE: Adjust the position of the flow meter isolation ball valve so that the pressure indicated on the Pressure Transducer is approximately 15-20 psig (1-1.4 bar) and remains constant between the nitrogen generator’s cut-in and cut-out pressure.
Connect the handheld gas analyzer (THGA) 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 pressure 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%.
NOTE: Nitrogen purity and nitrogen production rate are inversely proportional in the nitrogen generator. As nitrogen purity increases, production decreases. Increase nitrogen purity by turning Flow Control Valve clockwise and decrease nitrogen purity by turning Flow Control Valve counter-clockwise
Verify and document the nitrogen output purity concentration: __________________________
Verify and document the nitrogen production rate as indicated on the flow meter: __________________
Compare documented nitrogen output purity concentration and nitrogen production rate levels with the Shop Test Report provided in the nitrogen generator.
1. Readjust nitrogen output purity level using Flow Control Valve, as necessary, to obtain nitrogen output purity levels and nitrogen production rate comparable to the Shop Test Report, if discrepancies are significant.
2. If unable to obtain comparable nitrogen output purity levels and nitrogen production rate, contact Johnson Controls. Visit the CONTACT US page at www.tyco-fire.com for contact information by location.
Close the isolation ball valve to the internal flow meter.
Disconnect the handheld gas analyzer (THGA) from the gas sampling port of the nitrogen generator.
Leak check all plumbing throughout the nitrogen generator, include the air supply from the air compressor and the nitrogen supply to the fire sprinkler systems, repair any leaks found.
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