Page 62 - NG-1 1150, NG-1 1500, NG-1 2000, NG-1 3000 - Stand-Alone Nitrogen Generator System Installation Manual

Nitrogen Production Flow Rate Check Procedure
The production rate of the nitrogen generator can be verified using the production flow meter in the nitrogen generator cabinet (See Generator Configuration Diagram).
1. With the nitrogen generator powered and in the nitrogen production mode:
a. Partially open the nitrogen production flow meter isolation ball valve to automatically
start the nitrogen generator.
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 pressures.
b. Close the nitrogen generator’s nitrogen outlet isolation ball valve.
c. Read and document the nitrogen production flow rate on the nitrogen production flow
meter.
i. Flow rate indicated is in standard cubic feet per hour (SCFH).
ii. The production rate is measured using the center of the silver ball in the flow meter.
iii. If production flow rate is lower than anticipated, verify the excess air assembly is not exhausting too much air. (See Nitrogen Generator Excess Air Adjustment Procedure)
d. Open the nitrogen generator’s nitrogen outlet isolation ball valve.
e. Close the flow meter isolation ball valve.
f. Compare the nitrogen production flow rate with the nitrogen production values listed in
the following chart.
Nitrogen Generator Flow Rates
NG-1 100 Wall Mount w/ Integral Air Compressor NG-1 250 Wall Mount w/ Integral Air Compressor NG-1 500 Wall Mount w/ Integral Air Compressor NG-1 1000 Skid Mount w/ Integral Air Compressor NG-1 1150 Stand-Alone w/ 5 hp Air Compressor NG-1 1500 Stand-Alone w/ 7.5 hp Air Compressor NG-1 2000 Stand-Alone w/ 7.5 hp Air Compressor NG-1 3000 Stand-Alone w/ 10 hp Air Compressor
150 (70.8)
198 (93.5) 342 (161.4) 600 (283.2) 858 (404.9) 1,458 (688.1) 1,458 (688.1) 2,100 (991.1)
20 (9.4) N/A N/A N/A N/A N/A N/A N/A
N/A
27 (12.7) N/A
76 (35.9) 130 (61.4) 130 (61.4) 225 (106.2) 285 (134.5)
N/A
N/A
44 (20.8) N/A 240 (113.3) 240 (113.3) 425 (200.6) 550 (259.6)
Nitrogen Generator
Production Rate – SCFH (L/min)
Bypass Mode
70 psig (4.8 bar)
Nitrogen Generation Mode
100 psig (6.9 bar)
150 psig (10.3 bar)
NOTE: If production flow rate is lower than flow rates in the production chart, check pressure regulator of the excess bleed off assembly.
If production flow rate identified and documented varies more than 10% of the flow rates in the production chart, contact Johnson Controls.
TFP1275 Page 61 of 84