11
Trouble
Water is blocking
the oxygen tubing
Not able to dial in
the flow rate
Solution
Disconnect cannula
from tubing, if flow
is fine replace with
new cannula
Disconnect tubing
from concentrator –
if flow is fine, replace
with new tubing
Disconnect humidifier
bottle – if flow is fine
replace humidifier
bottle or connect
tubing to the nipple
adapter
Change tubing or
shake excess out of
tubing (if needed,
switch to portable
while you change or
clear the tubing)
Cause
Obstruction in
cannula
Obstruction in
tubing
Obstruction in
humidifier bottle
Humidifier jar is
over-filled – humidity
has condensed in
tubing
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