Page 59 - NG-1 1150, NG-1 1500, NG-1 2000, NG-1 3000 - Stand-Alone Nitrogen Generator System Installation Manual
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Safety Warnings
All maintenance is to be performed by qualified personnel. Prior to any system maintenance on the nitrogen generation system, ensure that the nitrogen generator is isolated from the compressed air supply and all system risers. Ensure that the nitrogen generation system and the associated piping that is to be manipulated is completely depressurized prior to performing any maintenance. Failure to do so can result in system damage and/or personal injury.
Maintenance and Troubleshooting Warnings
1. Nitrogen Generator includes 120-240VAC 50/60 Hz voltage inside cabinet – exercise caution and do not touch any wiring connections when power is applied to the unit.
2. Nitrogen Generator has hot surfaces inside cabinet when nitrogen generator is operating and after nitrogen generator has turned off – exercise caution when working on nitrogen generator while operating and after nitrogen generator has shut off. (Wear Hand Protection, where needed)
The nitrogen generators require limited maintenance; however, it is advisable to routinely check the generator to ensure functionality. The following is a checklist and schedule for routine inspection.
   Verify all valves have smooth operation - clean and un-corroded Verify all manual valves fully open and close
Verify compressor is turning on/off at low/high pressure
Verify correct nitrogen purity level out of cabinet sampling port Verify pressure gauges are in working order
Change oil in air compressor (per manufacturer’s recommendations) Verify there are no noticeable leaks on unit
Check coalescing filters
Check for loose connections in cabinet and control box
Check air compressor filter, replace as necessary
Check air receiver tank auto-drain strainer, clean as necessary Replace coalescing filters
Verify Oxygen Removal Vent In-Line Filter and Y-Strainer are clean Verify no air or water leaks in Oxygen Removal Vent
Nitrogen Generator Excess Air Adjustment Procedure
Quarterly Quarterly Quarterly Quarterly Quarterly Quarterly/500 hrs Quarterly Semi-annually Semi-annually Semi-annually Annually Annually Annually Annually
                            Air compressors used to meet the NFPA 13 30-minute fill requirement typically have a higher production rate than the maximum feed rate of the nitrogen generator separation membrane. When using the same air compressor to meet the NFPA 30-minute fill requirement and nitrogen production, the compressed air
TFP1275 Page 58 of 84

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