Installation and Operating Guide
Nitrogen Generator
©
Copyright 2017 Terra Universal Inc. All rights
reserved. • Revised June 2017 • Document No. 1800-47
Terra Universal, Inc. • TerraUniversal.com • 800 S. Raymond Ave. • Fullerton, CA 92831 • TEL: (714) 578-6000 • FAX: (714) 578-6020
3
3.0
Set-Up and Operation
Before operation, carefully unpack and inspect the Nitrogen Generator. Any damage should be reported immediately
to the shipping company.
To prevent dangerously low oxygen levels and risk of asphyxiation, nitrogen-purged systems should only
be installed in a well-ventilated area.
WARNING
Connecting and Operating the System
1.
With the pressure regulator (counter clockwise rotation) and flowmeter (clockwise rotation) completely closed,
connect the Nitrogen Generator to an incoming compressed air line by means of the 3/8” (5/8” for Cat. #2700-
09B) inlet slip fitting on the top panel. The compressed air fed into the Nitrogen Generator should be regulated
externally between 100 and 200 psi (For maximum purity, choose the highest inlet pressure possible.)
2.
Connect the nitrogen outlet by means of the other 3/8" (5/8” for Cat. No. #2700-09A) quick connect fittings on the
top panel.
3.
Open regulator (completely clockwise) and flowmeter (completely counterclockwise) to allow unrestricted flow at
full line pressure. The outlet pressure will drop roughly 20-30% from the inlet pressure as the compressed air
flows through the membrane. Flow and purity are determined by adjusting either the pressure regulator or
flowmeter.
If consistent outlet pressure is required, set the pressure regulator at the desired level and then adjust the
flowmeter to achieve the desired flow at your selected pressure. The lower the flow rate at any pressure level,
the higher the product purity. The higher the pressure at any flow rate, the higher the product purity.
For your convenience, Terra installed a low-pressure alarm to alert users of gas line kinks or compressor
malfunctions via an easy-to-see Operator Status Indicator (OSI) light. This light emits a solid-color glow
under normal conditions and flashes if it detects that the compressed air feed falls below 70 PSI. This light is
120VAC powered and included as a convenience; electricity is not needed for the generator to extract
nitrogen from compressed air.
NOTE
Refer to flow tables on following pages for guidelines on
typical purities achieved at varying pressures and
temperatures. Conduct purity tests to determine the settings that meet your specifications.
Initial Calibration
The frequency at which to replace pre-filters will vary depending on your application and system set-up. To help
determine the frequency for your system, check the pre-filter every three months until the color indicator on the pre-
filter turns yellow, which signifies that it’s time to replace it with a new pre-filter. Use the elapsed-time data from this
procedure to set up a filter maintenance schedule that corresponds to your workflow. By doing this, the membrane
filter will last indefinitely.
