Page 22
3001002 Rev. T
Section 12 Alarms
Alarm icon
Audio Signal
Indicates
Cause
Action
General fault
and " - - " in
flow
(flashing)
Medium
Priority
Cannot be
muted
Malfunction of
sensor or con-
trol system
Internal compo-
nent failure or
insufficient gas
supply
Check gas supply. If
not corrected, discon-
nect patient. Unplug AC
power, press and hold
Run/Standby button for
3 seconds to clear the
alarm, send for service.
General fault
and " - - " in
O
2
(flashing)
Medium
Priority
Cannot be
muted
O
2
sensor
fault
Depleted or
defective O
2
sensor
Unplug AC power, press
and hold Run/Standby
button for 3 seconds to
clear the alarm. Replace
O
2
sensor. Restart unit.
Blocked tube
(flashing)
Medium
Priority
Mutes only
during brief
reset period
High back
pressure
Obstructed or
kinked cannula/
delivery tube,
incorrect can-
nula for flow
rate, or DPC
improperly
seated
Clear obstruction, check
cannula type,
re-install DPC.
Water out
Medium
Priority
No water in
disposable
water path.
Gas flow
continues
without heat-
ing or water
circulation.
Sterile water
empty, or
obstructed inlet
tube.
Replace water bag or
straighten inlet tube.
Restart unit. If alarm per-
sists, disconnect patient
from therapy.
Disposable
water path
(flashing)
Medium
Priority
Disposable
water path
faulty or not
detected. Unit
will not run.
Dispos-
able water path
defective, not
properly seated
or not installed.
If disposable water path
is present, place unit into
Standby, remove and re-
place disposable patient
circuit to reset detector.
Restart Unit.
Battery
charging
(steady)
None
The internal battery backup is not fully charged. The unit
would not run on battery for the full rated time in the event of
a power failure. No action is necessary.
Battery
(flashing)
Medium
Priority
The unit is
running in
BATTERY
mode. Gas
flow and
blending con-
tinue without
heat or water
circulation.
AC power is
disconnected
Reconnect AC power.
Alarm Table
