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20
TROUBLESHOOTING
TROUBLESHOOTING
故障现象
Solution
Probable cause
Symptom
The oxygen
concentrator is
operated, but the
yellow indicators
are turned on at
the same time.
1) Oxygen concentration
<82%
1) Clean or replace the filter.
2)Oxygen flow exceeding
recommended maximum
flow：＞5L/min
2) Adjust the flow rate to the
specified position based on
the doctor's advices.
3) If this condition persists, the machine can be used
continuously, but must contact the supplier.
The oxygen
concentrator is
not operated, the
red indicator is
turned on, the
alarm sounds and
"E1" is shown on
the display screen.
1) The system cycle
pressure is too low.
1) Clean or replace the filter
element.
2) If this condition still persists, shutdown the machine
and contact your supplier immediately.
The oxygen
concentrator is
not operated, the
red indicator is
turned on, the
alarm sounds and
"E2" is shown on
the display screen.
1) The system cycle
pressure is too high.
1) Shutdown the machine
and contact the supplier
immediately.
The oxygen
concentrator is
not operated, the
red indicator is
turned on, the
alarm sounds and
"E3" is shown on
the display screen.
1) The compressor
circuit is open-circuit.
1) Shutdown the machine
and contact the supplier
immediately.
故障现象
Solution
Probable cause
Symptom
* In atomization
operation, there is
small or no
atomization
output from the
nebulizing
assembly (only for
7F-5AW).
1) The n e b u l i z i n g
assembly is not installed
in place or is installed
incorrectly.
1) Properly install the
nebulizing assembly in place
with the specified method.
2) T h e n e b u l i z ing
assembly is deformed
during cleaning and
disinfection.
2) Move it to the outlet with
power output.
3) T h e n e b u l i zing
assembly outlet is
blocked.
3) Clean or replace the
nebulizing assembly.
5) If this condition persists, must shutdown the
machine and immediately contact the supplier.
The oxygen
concentrator is
not operated, the
red indicator is
turned on, the
alarm sounds and
"E4" is shown on
the display screen.
1) The compressor
circuit is short-circuit.
1) Shutdown the machine
and contact the supplier
immediately.
4) The drug liquid is
filled excessively.
4) Fill the proper amount of
drug liquid below the
maximum level on the
atomization cup based on the
doctor's advices.
CAUTION:
If you have all other problems, TURN OFF the
concentrator first, use your reserve oxygen supply,
and contact the supplier immediately.
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