Page 15-18 LTV
®
Series ventilator Operator’s Manual
p/n 10664, Rev. Y
Symptoms Possible Causes What to Do
Alarm silence was already
active (Silence/Reset LED
is red).
The ventilator alarms can be silenced for
60 seconds by pushing the Silence Reset
button. If the alarm is already silenced
(Silence/Reset LED is red), it will not
sound again until the silence period
expires.
High pressure alarm delay
is on - HP DELAY is set to
DELAY 1 BRTH or DELAY
2 BRTH.
When a high pressure condition is
detected, the HIGH PRES message is
displayed and the High Pres Limit control
is flashed. If the HP DELAY option is set to
NO DELAY, the audible alarm is sounded
immediately.
When the HP DELAY option is set to
DELAY 1 BRTH or DELAY 2 BRTH, the
audible is not sounded until the second or
third consecutive breath with a high
pressure condition. (See page 10-4 for an
explanation of HP DELAY.)
HIGH PRES occurred
but alarm did not
sound.
Alarm automatically
silenced after 3 seconds
because condition cleared.
When an alarm occurs, the audible alarms
sound for a minimum of 3 seconds or for
as long as the condition exists. Some
alarms, such as HIGH PRES may clear
almost immediately and the alarm will
sound for only 3 seconds.
Alarm doesn’t sound. Internal problem with the
ventilator.
Immediately contact a certified Pulmonetic
Systems’ service technician.
Ventilator won’t
exhale, repeated HIGH
PRES alarms, turbine
stops and pressure
drops, then autocycles
up to HIGH PRES
again.
Diaphragm installed
backwards or incorrectly
seated in exhalation valve.
Open the exhalation valve and remove the
diaphragm and spring. Reseat the spring
and diaphragm valve and snap the peep
valve or peepless valve cap back in place.
See page 13-11 for a diagram of correct
exhalation valve assembly.
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