Yuwell 7F-3 User Manual page 21

TROUBLESHOOTING
Symptom
Concentrator is
working, the yellow
illuminate
, alarm, the
display show "E3".
Concentrator is
working, the yellow
illuminate
, alarm, the
display show "E4".
Concentrator is
working, the yellow light
illuminate
, alarm, the
display show "LL".
The nasal cannula is
fogged with vapor or full
of liquid drops.
(Remove the vapor or
liquid drops method:
Turn on the device and
connect the tubing to the
oxygen outlet.
your finger to block and
release the end of the
tubing several times to
remove the moisture and
liquid.)
Probable cause
1) Compressor circuit is opened.
not
light
2) inside temperature is too high ;
3) If the phenomenon is still appeared, stop using the device, please contact the
immediately
supplier
not
1) Compressor circuit is closed.
light
2) If the phenomenon is still appeared, stop using the device, please contact the
immediately
supplier
not
1) oxygen flowrate is too low.
2) If the phenomenon is still appeared, stop using the device, please contact the
immediately
supplier
1) Poor ventilation around the
around the device, so operating
temperature is too high.
2) The water which added to
humidifier is too hot.
3) Add too many water into
humidifier.
4) The device stops suddenly
during operating.
Use
5) Accessory is connected to the
device. The tubing is kinked
and the device stops suddenly.
6) Cooling fan which mounted
inside the device stop running or
rotate slowly,
operating temperature is too hot.
7) If the phenomenon is still appeared, the device can be used but please
contact the supplier.
If you have all other problems, TURN OFF the concentrator first,
use your reserve oxygen supply, and contact the supplier
immediately.
1) Stop using the device, please contact
the supplier
2) fan failure ; or concentrator air inlet
and air outlet blocked ;
.
1) Stop using the device, please contact
the supplier
.
1) oxygen outlet or tubing accessories
is blocked or kinked; or flowrate
knob is turn down.
.
1) Make sure the device is at least 10
cm away from the walls, other jam
or heater.
2) Add cold water to humidifier.
3) Water added should between the
maximum and minimum levels in
humidifier.
4) Turn off the device immediately.
Restart the device to remove the
moisture and liquid.
5) Smooth the nasal cannula and
tubing.
6) Replace the cooling fan.
Note: Cut off the power first. And
make the
perform by qualified personnel only.
- 20 -
Solution
immediately
.
immediately
.