15
Manual: NGP-300D
10.
The nitrogen storage tank will fill to 75±3 PSI, then the nitro
-
gen solenoid will close. The Nitrogen Solenoid light should
now be off. See Figure 10.
13. Using the installed petcock at the bottom of the air storage
tank, relieve the pressure until the air compressor turns ON.
The air compressor should turn on at 85±3 PSI. Close the
petcock valve. See Figure 12.
14.
The air compressor will run for 45 seconds. The air compres
-
sor will turn off at 105±3 PSI. If the unit takes longer than
the prescribed time, or does not stop running when the unit
reaches 105±3 PSI. Go to the
Troubleshooting
section, page
21.
15.
The nitrogen generator is now ready to fill the fire sprinkler
11.
The compressor will shut off at 105±3 PSI air storage tank
pressure. This should take 10 minutes. See Figure 11.
12.
Check all piping connections for leaks, as pre-plumbed pip
-
ing may have loosened during shipping.
Air Storage Tank
Pressure Gauge
Air Storage
Tank Petcock
9. Power the nitrogen generator system ON. The Power On
light and the Nitrogen Solenoid light should turn green. See
Figure 9.
Figure 9
Figure 10
Figure 11
Figure 12
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