AirSep AS-G User Manual (English)

Questions and Answers:

T
Thomas TaylorAug 18, 2025
What to do if AirSep Portable Generator operates continuously but oxygen pressure is low?
- J
  Jennifer HolmesAug 18, 2025
  If your AirSep Portable Generator is operating continuously but the oxygen pressure at the specified concentration is lower than expected, it could be due to a few reasons. First, check for adequate feed air pressure by ensuring the feed air valves are fully open and the lines are not obstructed. Second, the cycle pressure might be inadequate, in which case you should adjust or replace the feed air regulator. Finally, the oxygen demand might exceed the generator's capacity, so check your oxygen usage and inspect the unit, oxygen hoses, and piping for leaks.
M
Mark KingAug 21, 2025
How to fix a loud chattering valve noise in AirSep Portable Generator?
- H
  hmitchellAug 21, 2025
  If the valve on your AirSep Portable Generator is making a loud “chattering” noise, it could be due to several reasons. Check the power supply for low voltage. Also, low voltage PLC output can cause this issue, so consider replacing the PLC. Additionally, a dirty valve, worn valve core, or a defective EMI filter can be the cause. In these cases, you should clean or rebuild the valve, or replace the EMI filter, respectively.
P
Philip SanchezAug 25, 2025
How to troubleshoot an AirSep Portable Generator that does not cycle?
- D
  Daryl WilliamsAug 25, 2025
  If the oxygen generator is not cycling, ensure the unit is plugged into a working wall outlet. Check if the circuit breaker has tripped and reset it if necessary. Verify that the oxygen generator is switched on. If the oxygen generator is in standby mode, it will start running once the pressure in the oxygen receiver goes below the low setpoint for standby mode.
W
wrightaliciaAug 27, 2025
What to do if AirSep Portable Generator filter drain valve energizes but no air exhausts?
- D
  Douglas BlanchardAug 27, 2025
  If the filter drain valve on your AirSep Portable Generator energizes with the unit pressurized, but no air exhausts, it could be due to a drain valve obstructed or stuck in the closed position, so you should clean or replace the valve. Another possibility is that the drain tubing is obstructed or pinched, in which case you should clean or replace the tubing.
F
Fernando HughesAug 30, 2025
Why is my AirSep Portable Generator outputting particulates (dusting)?
- S
  seanoconnorAug 30, 2025
  If the AirSep Portable Generator is outputting particulates (dusting), it could be due to an improperly set feed air regulator, so adjust it. Another cause could be contaminated molecular sieve in adsorbers. Also, the system might not be cycling properly, so check and repair or replace any faulty wiring and/or the PLC.
P
parsonsmichaelSep 2, 2025
Why does the feed air regulator leak in my AirSep Portable Generator?
- C
  Caleb HallSep 2, 2025
  If the feed air regulator on your AirSep Portable Generator is leaking out of the bleed orifice, it could be due to a stuck feed air regulator main valve assembly, so you should clean and lubricate the main regulator valve assembly. Alternatively, the main valve assembly seat could be defective, requiring you to rebuild or replace the regulator.
T
Tyler YoungSep 5, 2025
What causes the relief valves to open on an AirSep Portable Generator?
- S
  Samantha GomezSep 5, 2025
  If the oxygen generator relief valves on your AirSep Portable Generator are opening, it could be because the cycle pressure exceeds the maximum pressure specified, so adjust the feed air regulator. It could also be due to a stuck feed air regulator main valve assembly, in which case you should rebuild or replace the regulator. Finally, the relief valve itself might be defective and need replacement.
P
Peter JimenezSep 8, 2025
What to do if AirSep Portable Generator filter drain valve remains open?
- B
  Brendan MurraySep 8, 2025
  If the filter drain valve on your AirSep Portable Generator remains open and is not energized, it could be because the valve is obstructed, so clean or replace it.
D
danielparkerSep 12, 2025
Why doesn't the filter drain valve energize on my AirSep Portable Generator?
- D
  Daniel BeckerSep 12, 2025
  If the filter drain valve on your AirSep Portable Generator does not energize, it could be due to a loose or defective wire to the valve, so repair or replace the wire. It could also be caused by a defective valve coil or a valve core stuck in the closed position, so replace the valve. Finally, a defective PLC with no power output to the valve could be the cause, requiring PLC replacement.

AirSep AS-G Specifications

General

Brand	AirSep
Model	AS-G
Category	Oxygen Equipment
Language	English

Summary

Ownership Data

Symbols/Abbreviations

1.0 Introduction

1.1 GENERAL

Provides general information about the AirSep Corporation PSA Oxygen Generator Models.

1.2 WARNINGS, CAUTIONS, AND NOTES

Explains the meaning of WARNING, CAUTION, and NOTE messages in the manual.

1.3 REFERENCES TO CONTROLS AND INDICATORS WITH TAGS OR LABELS

Describes how controls and indicators are referenced using tags, labels, and numbers.

2.0 Safety

2.1 GENERAL

Discusses the nature of oxygen and the importance of reading the safety section.

2.2 POTENTIAL HAZARDS

Details potential hazards associated with oxygen, fire, and electrical shock.

2.3 SAFETY PUBLICATIONS

Lists publications for additional information on safe oxygen handling.

3.0 System Description

3.1 GENERAL

Explains the PSA process, components, and regenerative nature of the oxygen generator.

4.0 Components Description

4.1 EXTERNAL COMPONENTS

Illustrates and describes the external components of the oxygen generator.

4.2 ADSORBERS

Defines adsorbers as vessels containing molecular sieve for gas separation.

4.3 CONNECTIONS

Details the air inlet, oxygen outlet, and condensate drain outlet connections.

4.4 MANIFOLD COMPONENTS

Illustrates and names manifold components like valves, filters, and transducers.

4.5 CONTROL PANEL: EXTERNAL COMPONENTS

Describes the Schneider Electric touch screen and its functions.

4.6 CONTROL PANEL: INTERNAL COMPONENTS

Lists internal control panel components like PLC, HMI, and circuit breakers.

4.7 ACCESSORY KITS

Lists items included in starter kits for various generator models.

5.0 Installation

5.1 HANDLING AND UNPACKING

Provides guidelines for inspecting and unpacking the oxygen generator unit.

5.2 PRE-INSTALLATION GUIDELINES

Outlines important considerations before installing the oxygen generator.

5.3 INSTALLATION INSTRUCTIONS

Details the recommended installation arrangement and connections.

5.4 INITIAL START-UP

Provides step-by-step instructions for the initial start-up procedure.

5.5 OPERATION

Explains how to operate the oxygen generator in AUTO or MANUAL mode.

5.6 SHUTDOWN

Details the procedure for shutting down the oxygen generator.

5.7 EXTENDED SHUTDOWN

Outlines steps for shutting down the generator for 24 hours or longer.

5.8 START-UP AFTER AN EXTENDED SHUTDOWN

Describes the procedure for starting the generator after an extended shutdown.

6.0 Maintenance

6.1 DAILY MONITORING

Instructions for daily checks of the automatic drain valve function.

6.2 MONTHLY MONITORING

Guidelines for monthly inspection of filters and testing drain valve performance.

6.3 DEPRESSURIZING THE FILTERS

Procedure to safely depressurize filter assembly for maintenance.

6.4 CHANGING FILTER ELEMENTS

Step-by-step guide for changing particulate and coalescing filter elements.

6.5 DEPRESSURIZING THE OXYGEN GENERATOR

Procedure to safely depressurize all oxygen generator components.

6.6 ADJUSTING THE FEED AIR REGULATOR

Instructions for re-adjusting the feed air regulator after maintenance.

7.0 Troubleshooting

7.1 TECHNICAL SUPPORT

Contact information for assistance with troubleshooting or repairs.

7.2 TROUBLESHOOTING CHART

A chart listing problems, probable causes, and solutions for the oxygen generator.

A. Appendix Technical Data

A.1 SPECIFICATIONS

Provides technical data for standard AS-D+ through AS-P model oxygen generators.

A.2 DRAWINGS AND SCHEMATICS

Includes diagrams like pressure profiles, installation arrangements, general drawings, and flow schematics.

A.3 ELECTRICAL SCHEMATICS – AS-D+ – AS-P

Presents detailed electrical schematics for the AS-D+ and AS-P models.

B. Appendix Warranty/Returns

B.1 PRODUCT WARRANTY

Outlines the terms and conditions of the AirSep Corporation product warranty.

B.2 LIMITS OF LIABILITY

Details the limitations of warranty and AirSep's liability.

B.3 RETURNING THE OXYGEN GENERATOR OR A COMPONENT FOR SERVICE

Provides instructions for returning units or components for service or credit.

C. Appendix Component Literature

C.1 PROGRAMMABLE LOGIC CONTROLLER

Provides information on the Schneider Modicon M221 Programmable Logic Controller.

C.2 TOUCHSCREEN

Details the Schneider Electric Magelis HMISTU855 Touch Panel.

C.3 FILTERS

Information on Wilkerson Corporation MICROalescer filters.

C.4 REGULATORS

Information on Wilkerson Corporation regulators.

C.5 VALVES

Information on Neles-Jamesbury 3 Piece Ball Valves.

D. Appendix

D.1 OXYGEN GENERATOR DECOMMISSIONING AND DISPOSAL GUIDELINE

Provides a guideline for decommissioning and disposing of oxygen generators.

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