Secondhand Devilbiss Compact 525KS 5L/min Oxygen Concentrator

Objective AI Report

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Report date: 03.01.2026

Drive DeVilbiss 525 Series Oxygen Concentrator Analysis Report

Device Identification, Brand and Model Analysis

The device shown in the visuals is a medical oxygen concentrator used for respiratory support. As a result of detailed examinations, the brand of the device has been clearly identified as Drive and DeVilbiss Healthcare from the logos located on the front panel and the bottom.

For model identification, the labels and technical specifications on the device were examined; the phrases “DEVILBISS 5 LITER OXYGEN CONCENTRATOR” and “525 Oxygen Concentrator” were observed. In light of this data, the product model has been definitively determined as the Drive DeVilbiss 525 series 5 Liter Oxygen Concentrator.

Visual inspections of the print quality of the logos, the craftsmanship of the device’s molding, and the arrangement of the labels indicate that the product is Original.

Physical Condition and Deformation Analysis

The outer casing of the device is made of black hard plastic. Upon examining its general physical condition, the following details stand out:

• Case Condition: There are prominent and widespread scuff marks, scratches, and white abrasions on the side and rear panels of the device (surfaces where the air inlet filter is located). This indicates that the device has been previously transported or has come into contact with surfaces when used in confined spaces.
• Front Panel: The control panel and the flowmeter section appear clean, and the writings on the buttons and labels are not erased and are clear.
• Handle: The carrying handle on the top appears sturdy.
• Integrity: No cracks or breakages have been detected in the casing; deformations are superficial/cosmetic in nature.

Mechanical and Electronic Component Examination

The operating components of the device have been analyzed through the visuals as follows:

• Flowmeter: On the front face, there is a tube used to adjust the oxygen flow in the range of 0 to 5 LPM (Liters/Minute). The black ball inside indicates the flow level. The adjustment knob is in place.
• Control Panel and Warning Lights: The panel features LED indicators and symbols showing O2 (Normal), Low O2, Service, and Power statuses.
• On/Off Switch: An I/O position power switch is present and appears physically robust.
• Wheels: Wheels providing mobility are visible at the base of the device; no mechanical deficiencies are apparent.
• Filter System: At the rear of the device (3rd visual), there is a coarse particulate filter with a black spongy structure. The filter is observed to be installed in its housing.

Usage Time and Counter Information

In the 4th visual, which shows the internal components or the back of the filter, there is a mechanical hour meter (counter). The value on this counter has been examined in detail:

• Counter Value: The numbers read on the analog counter are 00331. Although it is not possible to definitively determine from the visual whether the last digit represents a decimal (1/10 hour) or a full hour due to the nature of mechanical counters, the clear number sequence observed is 00331.
• Comment: The relatively low counter value compared to the scratches on the outer casing suggests that the device’s motor life may still be early, but its exterior cosmetics have worn due to usage or storage conditions.

Accessories and Connections

Accessories seen integrated with or connected to the device in the visuals, and the total number of products:

• Quantity Information: 1 main device and attached accessories.
• Humidifier Bottle: On the front of the device, there is 1 humidifier water bottle connected to the oxygen outlet. Water has been observed within the bottle, between “Minimum” and “Maximum” levels.
• Oxygen Cannula/Tubing: A transparent oxygen tube/cannula is attached to the humidifier bottle.
• Power Cable: A black power cable used for electrical connection is present at the rear of the device. There is a barcoded label on the cable.

Technical Label and Warning Sign Analysis

Critical technical information and warnings on the device labels are as follows:

• Oxygen Purity: The label states that oxygen purity at 5 LPM (5 Liters per Minute) flow is 93% ± 3%.
• Serial/Part References: Part/label revision codes such as “525DD-037 REV C” and “525DD-131 REV A” are visible.
• Warnings: “No Smoking” symbols, “Do not lubricate,” “Keep away from fire” symbols, and the “Rx Only” (Prescription Only/Medical Use) phrase are present.

Areas of Use and Purpose

This device is designed to provide long-term oxygen therapy to patients in home environments or clinics in cases of COPD, respiratory failure, or low blood oxygen saturation. The device takes ambient air, separates nitrogen, and delivers high-purity oxygen to the user.

Current Malfunction and Risk Status

Current Malfunction: There is no indication in the visuals that the “Service” light is on or that a screen/mechanical part is broken.

Potential Risk: The extensive scratches and wear on the device’s outer casing suggest that the product may have been subjected to physical impacts. Although this does not impede its operation, it is recommended that the buyer pays attention to filter cleaning and casing integrity. Against the possibility that the water in the humidifier bottle may be stagnant, it is important for hygiene and health to replace the bottle and water before use.