Page 22 - NG-1 100, NG-1 250, NG-1 500 - Wall-Mounted Nitrogen Generator System Installation Manual

b. At the completion of the fourteen (14) day nitrogen inerting process the SMART Vent Controller will automatically close the vent by de-energizing the solenoid.
NORMAL OPERATION
Once in service, the nitrogen generator requires no additional intervention to function properly. Generator settings should not be altered without first consulting with Johnson Controls and the unit should not be powered down for any reason other than maintenance. To take the generator out of service for maintenance, follow these steps:
1. Close the AMD regulated and fast fill valve on the appropriate fire sprinkler system.
2. Power off generator cabinet.
3. Depressurize the nitrogen generator cabinet and/or air compressor before performing any work
on either the nitrogen generator or the air compressor.
FIRE SPRINKLER SYSTEM MAINTENANCE PROCEDURE
In the event the fire sprinkler system requires maintenance or repair, the following procedure ensures the nitrogen inerting process will continue to function properly.
1. Close the AMD regulated and fast fill valve on the appropriate fire sprinkler system.
2. Depressurize the fire sprinkler system.
3. Complete the maintenance or repair work on the fire sprinkler system.
4. Open the appropriate fire sprinkler system AMD to pressurize the appropriate fire sprinkler
system (See System Filling Procedure).
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