22
INS-2500 • 5403680 • REV C • 04/19
1. To ensure the nitrogen generator is operating correctly and that the correct nitrogen purity is being produced a functional test
must be performed.
2. On the inside of the nitrogen cabinet locate the blue N
2
Bleed Valve (V04). See Fig 28.
3. Slightly open the blue N
2
Bleed Valve and begin relieving the pressure from the nitrogen tank.
4. Quickly close the blue N
2
Bleed Valve when you see the red instrument air solenoid lights turn on. This will happen at
approximately 60 PSI as show on the IntelliGen
™
display. See Fig 29.
Note:
If the pressure in the nitrogen tank drops below 55 PSI, the IntelliGen
™
Nitrogen Generator will return to
Bypass Mode. Close the valve and wait for the nitrogen generator to refill the tanks and the unit to return to Nitrogen
Generating Mode before trying again.
5. Immediately begin timing to see how long it takes to reach approximately 80 PSI in the nitrogen tank while the nitrogen
generator is in Nitrogen Generating Mode.
6. If the nitrogen generator is isolated from the sprinkler system the INS-2500 should take no longer than 8 minutes to
pressurize the nitrogen tank to 80 PSI.
7. During this time, connect the Portable Nitrogen Analyzer to the Nitrogen Sample Port (SP) to measure the purity of the
exiting gas. The analyzer should read 98.0% ± 1%. This may take a few minutes. See Troubleshooting Guide on Page 40 if
below 98.0%.
8. When the nitrogen generator reaches approximately 80 psi in the nitrogen tank, the red instrument air solenoid lights will turn
off. The air compressor will continue to run until the air tank pressure reaches approximately 175 PSI.
Nitrogen Functionality Test:
Fig. 28
Fig. 29
V04
