17
NITROGEN GENERATORS
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
9.5 Evaluation
Performance of the Parker Nitrogen Generator is highly dependent on the temperature of the
inlet air. The data on the flow rate presented in this bulletin is based on an inlet air temperature
of 77^F (25^C).
The performance and operating conditions of the Parker Nitrogen Generator should be monitored
on a routine basis, as dictated by the application. This routine system check should include correcting
any changes in the flow meter reading, confirming operating and outlet pressure gauge reading stability,
checking the downstream flow meter (if applicable) to ensure flows are consistent with the rated
capacity of the generator. If these readings have changed significantly from their original settings,
adjustments must be made as described in the Adjustment Procedure section of this bulletin.
9.6 System Upsets
System upsets relative to pressure or flow rate (e.g., compressor malfunctions or plumbing
leaks) will result in variations in the purity of the outlet gas. System upsets relative to temperature,
dewpoint, or hydrocarbon content of the inlet compressed air may also result in variations of the
system performance. These types of upsets should be eliminated from the compressed air delivery
system to assure consistent performance of the Parker Nitrogen Generator.
9.7 Shutting Down
Proper shutdown of the Parker Nitrogen Generator can be accomplished by simply closing the
(customer supplied) inlet air gate valve (see Figure 4 or 5). If this valve is left open, the system
will continue to consume compressed air. Closing the outlet flow control valve will not prevent air
consumption because the membrane module permeate port is open to atmosphere.
10. MAINTENANCE
To avoid system damage and/or personal harm, isolate the Parker Nitrogen Generator
from the compressed air supply and fully depressurize prior to performing any maintenance
activities. All maintenance activities for the N2-120, N2-160, and N2-240 Nitrogen Generators
should be performed by suitable personnel using reasonable care.
The primary maintenance tasks required by the Parker Nitrogen Generators every 6 months are:
changing the prefilter cartridges, changing the carbon dust filter, changing the final membrane
filter, and replacing the activated carbon filter. See Figure 6 for the locations of the various mainte-
nance items. A summary of the replacement part numbers and recommended service frequency
is shown at the end of this Maintenance section.
Replacement prefilter cartridges, carbon dust filter cartridges, final membrane filter cartridges,
and activated carbon filters may be ordered through your local Parker representative. Parker also
offers a convenient Filtration Maintenance Kit (P/N 75478) which contains two Grade DXE coalesc-
ing filters, two Grade BXE coalescing filters, two Grade BXE carbon dust filters, and two GS Grade
Membrane filters.
