Yuwell 7F-5B - User Manual

Questions and Answers

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Stacey ToddAug 17, 2025
Why is my Yuwell 7F-5B concentrator working but has no oxygen output?
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  Alejandra CowanAug 17, 2025
  If your Yuwell Medical Equipment concentrator is on but the oxygen output is weak or nonexistent, check these items: 1. Make sure the power cord is securely plugged into the wall outlet. A loose connection can cause this problem. Re-insert the power cord into wall outlet securely. 2. Inspect the humidifier bottle and cap for leaks. Re-install and tighten the humidifier cap. 3. Check if the humidifier's safety valve is open. Shake the humidifier slightly to close the safety valve. 4. Ensure the oxygen output is properly connected to the humidifier without any leaks. Re-install the humidifier tubing. 5. Examine all accessories (nasal cannula, mask, humidifier, tubing, etc.) for leaks and replace any that are leaking.
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Stacy HernandezAug 20, 2025
How to increase oxygen concentration in Yuwell 7F-5B Medical Equipment?
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  Nancy ChapmanAug 20, 2025
  If the oxygen concentration of your Yuwell Medical Equipment is below 82%, the filter may be dirty. Clean or replace the filter.
H
Heather RobinsonAug 22, 2025
What to do if Yuwell Medical Equipment displays E1 error?
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  Jenna HunterAug 22, 2025
  If your Yuwell Medical Equipment concentrator isn't working, the yellow light is on, the alarm is sounding, and the display shows “E1”, this indicates that the system cycle pressure is too low. Clean or replace the filter. If the problem continues, stop using the device and contact your supplier immediately.
A
Amy JonesAug 26, 2025
What to do if Yuwell 7F-5B displays E2 error?
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  Makayla StewartAug 26, 2025
  If your Yuwell Medical Equipment concentrator isn't working, the yellow light is on, the alarm is sounding, and the display shows “E2”, this indicates that the system cycle pressure is too high. Stop using the device and contact your supplier immediately. If the problem continues, stop using the device and contact your supplier immediately.
E
Eric JamesAug 28, 2025
How to remove vapor from Yuwell Medical Equipment nasal cannula?
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  Lindsey ButlerAug 28, 2025
  To remove vapor or liquid drops from the nasal cannula of your Yuwell Medical Equipment, turn on the device and connect the tubing to the oxygen outlet. Use your finger to block and release the end of the tubing several times to remove the moisture and liquid.
C
carrollkathleenAug 31, 2025
What does E4 error mean on Yuwell 7F-5B?
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  lewisallisonAug 31, 2025
  If your Yuwell Medical Equipment concentrator isn't working, the yellow light is on, the alarm is sounding, and the display shows “E4”, this indicates that the compressor circuit is closed. Stop using the device and contact your supplier immediately. If the problem continues, stop using the device and contact your supplier immediately.
P
pearsontylerSep 2, 2025
What does E3 error mean on Yuwell 7F-5B?
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  Jacqueline DeckerSep 3, 2025
  If your Yuwell Medical Equipment concentrator isn't working, the yellow light is on, the alarm is sounding, and the display shows “E3”, this indicates that the compressor circuit is opened. Stop using the device and contact your supplier immediately.
D
donna12Sep 5, 2025
How to stop power interruption alarm on Yuwell Medical Equipment?
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  john25Sep 5, 2025
  If the Yuwell Medical Equipment power interruption alarm is sounding, press the power on switch on the control panel. This should resolve the issue if the alarm is due to a simple power interruption. Check if the alarm and display are lit and the device is working.
W
wendy01Sep 8, 2025
How to improve ventilation for Yuwell Medical Equipment?
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  Lisa WangSep 8, 2025
  To prevent overheating of your Yuwell Medical Equipment due to poor ventilation, ensure the device is at least 30 cm away from walls, obstructions, or heaters.
A
Allen CooperSep 12, 2025
What to do if Yuwell Medical Equipment cooling fan is not working?
- S
  Sarah McneilSep 12, 2025
  If the cooling fan on your Yuwell Medical Equipment is not working, replace the cooling fan.

Summary

SAFETY NOTES

Indication and Intended Use

Contraindications and Side Effects

Important Safety Messages

Key warnings and instructions for safe operation and handling.

USING

Fire Safety Precautions

Guidelines to reduce fire risk during oxygen therapy.

Operation and Handling

MAINTENANCE

Preventive Maintenance

Recommendations for routine maintenance and professional servicing.

Clean Cabinet

Filter Cleaning and Replacement

Steps for cleaning and replacing the device's air filters.

RISK OF BURNS, ELECTROCUTION, FIRE OR INJURY TO PERSONS

Water and Electrical Safety

Warnings regarding water contact and electrical hazards.

Usage and Supervision

Guidelines for proper use, patient supervision, and authorized parts.

FEATURES

Technical Specifications

Oxygen Concentration vs. Oxygen Flow

Performance Data

Safety System

Failure Alarms and Indicators

OPERATING & INSTALLATION

Prepare Work

OXYGEN ABSORBING OPERATION

Initial Startup

Instructions for turning on the device and initial system checks.

Setting Flow Rate

How to adjust the flow rate according to physician's prescription.

Flowrate and Cannula Connection

Reading Flowrate

Guidance on correctly reading the flowmeter and setting the ball to the prescribed line.

Cannula Attachment

Instructions for connecting the firesafe valve and nasal oxygen cannula.

ALARM SIGNAL

Alarm Functions Overview

Lists the various failure alarms the concentrator can generate.

Indicator Light and Alarm Explanation

Explains the meaning of indicator lights and associated alarms.

Alarm Signal Register

Details specific alarm conditions and recommended actions.

Alarm Condition Details

Specific Error Code Explanations

TURNNING OFF

Shutdown Procedure

Clean Humidifier

Humidifier Maintenance

REPLACE FUSE TUBE

Fuse Replacement Procedure

TROUBLESHOOTING

Power Interruption Issues

Output or Flow Issues

Yellow Light Alarms

Guidance for conditions indicated by a yellow light and alarm.

Troubleshooting Specific Errors

E3, E4, LL Alarms

Solutions for specific error codes related to compressor, temperature, and flowrate.

Nasal Cannula Issues

Yuwell 7F-5B Specifications

General

Product Name	Yuwell 7F-5B
Category	Medical Equipment
Type	Oxygen Concentrator
Oxygen Flow Rate	1-5 L/min
Oxygen Concentration	≥ 90%
Outlet Pressure	40-70 kPa
Power Supply	AC 220V ± 10%, 50Hz
Alarm	Power failure alarm, low oxygen concentration alarm
Operating Environment Temperature	10°C - 40°C
Operating Environment Humidity	≤ 75%
Operating Environment Atmospheric pressure	86 kPa - 106 kPa