Procedure starting, stop NITROGEN GENERATOR & maintenance

Preparations before starting NITROGEN GENERATOR

1. Crank case heater for Freon compressor, oxygen analyzer, space heater for the panel to be before 24 hrs.
2. Cooling water for the compressor and cooler to check
3. Drain system pipe lines
4. Calibration of oxygen analyzer
5. Confirm that the valves on the system piping lines are in the state of starting condition
6. Prepare and setting up of air compressor pre cooler / membrane unit.
7. Check the manual regulating valve for flow rate and oxygen density adjustment at  the membrane outlet module in the position as per the guidelines

procedure Starting nitrogen generator

1. Purge mode or auto selected
2. Sequential start of the machinery and nitrogen production
3. Cold start mode ensures production modes only if oxygen and dew point are as per the set points

procedure Stopping nitrogen generator

1. Unload compressor before stopping
2. Freon compressor stop
3. Draining of system pipe lines
4. Delivery valve close and purge valve open
5. Power to be off for main heaters and panel

Maintenance

1. Membrane unit-inspect and clean the line filter, and replace the membrane element if required
2. Air compressor & Freon compressor-check filters and replace elements for them if required, overhaul of compressor and parts replacement as required
3. Oil separator-check the differential pressure and replace the filter element, if required
4. Lube oil-check and renew/replenish as needed
5. Oxygen analyzer-Inspection and replacement of sensor if needed
6. Periodical cleaning of the heat exchangers 

Author : E & I

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