N2GEN-FLEX Series Safety Guidelines – South-Tek Systems

Applies to: N2GEN-FLEX Series industrial PSA nitrogen generators — models 4TS, 6TS, 8TS, 10S, 12S, and 14S.

Safe installation, operation, and maintenance are essential to protect personnel and equipment. This article outlines the main safety guidelines for N2GEN-FLEX systems.

Who this article is for

This content is intended for installers, operators, maintenance personnel, and supervisory staff responsible for the installation, operation, and service of the system.

General safety

Only trained personnel should install, operate, or service the system.
Improper installation or operation can result in injury or damage to equipment.
Review all applicable site, startup, maintenance, and operating requirements before placing the system into service.

Nitrogen safety

⚠ Warning — Asphyxiation Hazard Nitrogen is inert and odorless and displaces oxygen. A nitrogen release in an enclosed or poorly ventilated space can lower oxygen below safe levels without warning and cause rapid loss of consciousness. Never enter or work in an area where an oxygen-deficient atmosphere may exist.

Install and operate the system in a properly ventilated area.
Do not operate the system in an enclosed, poorly ventilated space.
If there is any concern about room ventilation or confined-space conditions, review the installation area before startup.
Consider an oxygen-depletion monitor where ventilation is limited or where local code requires one.
Do not use nitrogen produced by the system as breathing air.

Compressed air and pressure safety

⚠ Warning — Stored Pressure The system, its sieve beds, and the nitrogen storage tank operate under pressure and can hold stored pressure even after the system is shut down. Sudden release of pressurized gas can cause serious injury.

Do not loosen, disconnect, or service any fitting, connection, hose, or component while the system is pressurized.
Relieve and verify that pressure is fully vented from the generator and the nitrogen storage tank before service.
Confirm the compressed air supply is isolated before opening the system.
Keep hoses and connections in good condition; a pressurized hose or fitting that fails can whip or become a projectile.

Electrical safety

⚠ Warning — Electrical Shock Hazardous voltage can cause injury or death. Isolate and lock out power before opening the control cabinet or servicing electrical components.

Electrical work should be performed or reviewed by a qualified electrician authorized to work in the installation jurisdiction.
Verify incoming power matches system requirements before operation.
Do not energize or operate the system until electrical connections have been properly reviewed.

Installation safety

Install the system on a stable, suitable surface.
The installed unit should be no more than 5° off level.
Maintain at least 3 feet of clearance on all sides of the skid.
Keep the area reasonably clear of dust and debris.
Operate the system only within the approved ambient temperature range for the equipment.

Startup safety

All N2GEN-FLEX units include either a virtual startup or an on-site startup. Customers should contact South-Tek Systems to schedule this startup before operating the system for the first time.

Do not attempt initial startup before the included startup has been scheduled.
Before starting the system, confirm the E-Stop is released.
Confirm the touchscreen and PLC are active before startup.

Operating safety

Use the touchscreen Status screen to turn the system on and off during normal operation.
After shutting the system down, do not restart it until the programmed shutdown delay has cleared.
During operation, monitor the system for abnormal alarms, unusual noise, or unexpected operating behavior.

Settings and adjustment safety

▲ Attention — Factory-Tuned Settings N2GEN-FLEX systems are factory tuned to perform as specified. Do not adjust valves, regulators, analyzer settings, calibration values, or PLC settings unless specifically directed by South-Tek Systems.

Do not change protected or factory-level settings without authorization.
Test screens and calibration-related settings should only be accessed by authorized personnel.
Unauthorized changes may affect system performance, displayed values, alarms, and startup readiness.

Lockout/tagout before service

▲ Attention — Isolate Before Service Before any maintenance or internal service, isolate all energy sources and confirm the system is safe to work on.

Shut the system down from the touchscreen, then turn off and disconnect electrical power and lock and tag it out.
Isolate the compressed air supply to the generator.
Relieve and verify that stored pressure is fully vented from the generator and the nitrogen storage tank.
Follow your facility's lockout/tagout procedures and confirm a zero-energy state before beginning work.

Maintenance safety

Perform maintenance only after the system has been properly shut down, isolated, and made safe for service.
Maintenance counters and filter counters should only be reset after the required service has been completed.
If the system develops excessive noise, suspected leakage, or repeated alarms, stop and review the condition before continuing operation.

Personal protective equipment

Wear eye protection when working on or around the system.
Wear hearing protection near operating equipment where noise levels require it.
Use appropriate PPE for the task and follow your facility's safety requirements.

When to stop and contact South-Tek

Contact South-Tek Systems if:

The system will not power on or start correctly.
Alarms continue to repeat.
You suspect a leak or worn component.
Purity does not recover during normal operation.
You are unsure whether a setting should be changed.

Documentation

For full operating, installation, and maintenance guidance, download the complete O&M manual below.

Download the N2GEN-FLEX Series O&M Manual

Need help? South-Tek Systems Service — Phone: (910) 415-1880 · Open a support ticket at support@southteksystems911.zendesk.com or through the Help Center.