Wife falls asleep within minutes of using an oxygen concentrator

Question edited for a lot more clarity.
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It can be two things.
It went over pressure and is venting.
or
It has a dry bearing.

Pill Identifier Pill Finder Drugs com This should help.

Engine failure lights, idle mixture concentrated, resulting in a mixed gas concentration is usually the cause of the fault before the oxygen sensor, fuel injectors clogged or resistor failure, the engine computer failure, etc., in order to repair the fault sensors and injectors majority, use the diagnostic tool to determine the cause and analyze the necessary data and measurement process, as suggested by the service shop technician repairs and testing, they are more professional. Another reminder recently because of the gasoline engine fault light of reason more, but mostly caused by clogged injector coking dilute mixture, throttle naturally by the carbon. Concentrated mixture of small, generally throttle jitter mostly carbon reason, testing is also very easy to just look at the opening of the can. I hope the answer to help you.

The main idea behind nearly all water filters is keeping the contamination out by trapping them within the filter matrix by attracting them to the surface of carbon particles or by screening them out with very small pores.

check the on screen menu on the monitor that you havent got a sleep timer set or aggressive power saving on. Also check on your pc that you dont have it set to turn the monitor off after two minutes

That is not normal operation. You need to contact a service or support rep from Fujitsu or contact the company you purchased the unit from.

These should produce oxygen within a few seconds of being turned on and be up to full flow in well under a minute.That is going to vary by model but 15 minutes is too long.

You are correct. This concentrator is oxygen specific. Therefore it only concentrates the oxygen, not other gasses. Joe

ps please rate my answer as very helpful.. thanks

are you using it in a closed room? you should be using it where there is air circulation. what's happening is the heater is using up oxygen and is producing carbon monoxide which is poisonous and if you are not careful IT WILL KILL YOU!

2002 PCED OBDII-Villager SECTION 1: Description and Operation Catalyst and Exhaust System Overview The catalytic converter and exhaust system work together to control the release of harmful engine exhaust emissions into the atmosphere. The engine exhaust gas consists mainly of nitrogen, carbon dioxide and water vapor. However, it also contains carbon monoxide, oxides of nitrogen, hydrogen, and various unburned hydrocarbons. Carbon monoxide, oxides of nitrogen, and hydrocarbons are major air pollutants, and emission into the atmosphere must be controlled.
The exhaust system consists of an exhaust manifold combined with a pre-catalytic converter, upstream heated oxygen sensor (HO2S11), (located just in front of the pre-catalytic converter), three way catalytic converter (TWC), downstream heated oxygen sensor (HO2S12) (located in front of the TWC), a muffler and an exhaust tailpipe.
Heated Oxygen Sensors The Villager is equipped with both upstream and downstream heated oxygen sensors (HO2S) (Figure 1). The upstream heated oxygen sensor (HO2S11) is used to control engine fuel flow. The sensor detects the concentration of oxygen in the exhaust gas and sends a signal to the powertrain control module (PCM). In a rich condition, the HO2S will output a voltage of 0.6 volts or greater, and in a lean condition a voltage of 0.4 volts or less will be output.
The downstream heated oxygen sensor (HO2S12) is used primarily for monitoring the efficiency of the catalytic converter system. The HO2S12 works in a similar way to the HO2S11 but only indicates to the PCM that the catalyst is functioning properly. In the event that the HO2S11 fails, fuel control will be switched over to the HO2S12 and the malfunction indicator lamp (MIL) will be illuminated. This allows the vehicle to operate with fewer emissions, even with a sensor failure.
Figure 1: Typical Heated Oxygen Sensor (HO2S)