Secondhand Medwelt 7F-5B 5L/min Oxygen Concentrator

Objective AI Report

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Report date: 11.11.2025

Medwelt 7F-5B Oxygen Concentrator Analysis Report

Overview and Device Description

The device shown in the visuals is a Medwelt brand 7F-5B model oxygen concentrator. The device is designed to provide oxygen to users who need respiratory support by generating oxygen from ambient air. This report includes a detailed analysis of the device based on the evidence presented in the visuals.

Quantity Information

The visuals show 1 unit of Medwelt 7F-5B Oxygen Concentrator and 1 unit of a humidifier water tank mounted on the device.

General Condition and Physical Deformation

The device is generally in a used condition, showing visible signs of use. Its white plastic casing exhibits yellowing over time and general dirtiness. Scratches, stains, and scuff marks are present at various points on the device.

• Casing: The device’s casing is generally yellowed. Deformations such as dirt, stains, and scratches are particularly noticeable on the lower part of the front panel and side surfaces. A more prominent black scuff mark is present on the bottom right corner.
• Control Panel and Surroundings: The control panel located on the upper part of the device and its surroundings are quite dusty.
• Humidifier Tank: The transparent humidifier tank located at the front appears to have lime or dirt residues inside and has a dulled appearance.

Technical and Mechanical Condition

The visual analysis of the device’s electronic and mechanical parts is as follows:

• Control Panel: The panel features a POWER switch, (+) and (-) buttons for adjusting the timer, and an I/O function button. The buttons appear physically intact and undamaged.
• Display and Usage Time: One photograph shows the device operating with its screen active. The number “02813” is legible on the screen. The inscription “COUNTS (hours)” above this number indicates that the device has been used for a total of 2813 hours. Additionally, the green I/O light, indicating the device is operating, is active.
• Flow Meter: On the right side of the device, there is a flow meter and adjustment valve for setting the oxygen flow between 0 and 5 liters per minute (L/min). These parts are visually intact.
• Oxygen Outlet: The oxygen output port, labeled “OXYGEN OUTLET”, is located on the front panel and no breakage is observed.

Accessories and Missing Parts

Apart from the humidifier water container attached to the device, no other accessories (e.g., oxygen cannula, power cable, or connecting hoses) are present in the visuals. No comment can be made regarding the presence of other accessories based on the visuals.

Label and Model Information

The brand and model of the device are clearly stated on its front panel.

• Brand: Medwelt
• Model: 7F-5B

There is a label on the top surface of the device containing warnings and technical information, but the entire text on the label is not legible in the photographs. Therefore, detailed information such as serial number, REF code, or lot number could not be obtained.

Originality Assessment

Considering the quality of the “Medwelt” logo on the device, the way the model number is written, and the general casing structure, the product is assessed as original. There are no indications of it being counterfeit.

Conclusion and Potential Risks

The Medwelt 7F-5B, subject to this evaluation, is an oxygen concentrator observed to be operating in the visuals. However, the device has a high usage time of 2813 hours and physical wear and tear due to intensive use. The yellowing, scratches, and general dirtiness on the casing aesthetically indicate the device’s poor condition. No error code, warning light, or obvious broken part indicating a malfunction has been detected in the visuals. Nevertheless, the high operating hours suggest that the device’s internal mechanisms (compressor, filters, etc.) may require maintenance or part replacement. A technical inspection would be beneficial for the device to continue operating safely and efficiently in its current condition.