LTV 1150 - Displays and Buttons

Page 7-2 LTV
®
1200/1150 Ventilator Service Manual p/n 18603-001, Rev. C
The troubleshooting tables are organized by symptoms, then by possible causes and
methods of diagnosing and resolving the problem. If you do not find the symptom you are
looking for under one section, you may find it listed under another. You may also be able to
diagnose the problem by reading sections with related symptoms. For information on
resolving problems that are not listed here, contact Pulmonetic Systems using the contact
information at the front of this manual.
Displays and Buttons
Some of the symptoms listed in this section are part of the normal operation of the ventilator
and do not indicate a problem with the ventilator. They are included for information only.
Symptoms Possible Causes What to Do
Pressure Control
display flashing.
Pressure control breath
terminated by flow - PC
FLOW TERM is set to on.
Pressure control breaths are normally
terminated when the set inspiratory time
expires. Flow termination of pressure
control breaths is allowed when PC FLOW
TERM is set to ON (See the LTV
®
1200 or
the LTV
®
1150 Ventilator Operator's
Manual for an explanation of this feature).
When a pressure control breath is
terminated by flow instead of time, the
Pres. Control display is flashed.
Pressure Support
display flashing.
Pressure support breath
terminated by time - set
under TIME TERM.
Pressure support breaths are normally
terminated when the flow drops below the
set percentage of the peak flow. Pressure
support breaths may also terminate on
time when the variable time limit is
reached before the flow drops to the set
level. (See the LTV
®
1200 or the LTV
®
1150 Ventilator Operator's Manual for an
explanation of the FLOW TERM and TIME
TERM features). When a pressure support
breath is terminated based on time, the
Pres. Support display is flashed.
High Pres Limit
display flashing.
HIGH PRES alarm
occurred.
The High Pres Limit display is flashed
and the HIGH PRES message is
displayed when a high pressure alarm
occurs. The display will continue to flash
even after the condition clears. (See the
LTV
®
1200 or the LTV
®
1150 Ventilator
Operator's Manual for an explanation of
the HIGH PRES alarm feature.)
Check high and low pressure sense lines
to be sure they are correctly attached and
securely seated at both the ventilator and
wye ends.