LTV 1150 - Page 89

p/n 18603-001, Rev. C LTV
®
1200/1150 Ventilator Service Manual Page 7-11
Symptoms Possible Causes What to Do
Circuit leak. Run a Leak Test and reseat or replace the
leaking parts or connections. See Leak
Test in Chapter 6 for instructions.
High or low side sense line
or elbow at patient wye
loose or leaking.
High or low sense lines are
occluded.
High or low sense ports in
the wye are occluded.
Check high and low pressure sense lines
to be sure they are correctly attached and
securely seated at both the ventilator and
wye ends.
Check the Luer fitting connections for
leaks.
Check the elbow connectors at the wye to
be sure they have not loosened or been
broken loose.
Verify lines are not occluded or pinched.
Check the exhalation drive line at both the
ventilator and exhalation valve ends. Verify
the line is securely seated and not leaking.
Exhalation drive line
leaking or loose.
Exhalation valve leaking
during inspiration.
Check the exhalation drive line at both the
ventilator and exhalation valve ends. Verify
the line is securely seated and not leaking.
Verify the exhalation valve is not leaking
during inspiration. If it is leaking, open the
exhalation valve and remove the
diaphragm. Reseat the diaphragm and
snap the valve cap back in place. See
Cleaning the Exhalation Valve and
Reusable Patient Circuit in Chapter 4 for a
diagram of the exhalation valve assembly.
If necessary, replace the exhalation
diaphragm, or exhalation valve with a new
one.
Sense lines are reversed. The sense lines are not designed to be
removed from either the wye or the Luer
fittings. If the sense lines have been
removed, they may not seal correctly
when replaced. Replace the patient wye
and sense lines with a known good
assembly.
Delivered pressure is
low, PEEP is low,
ventilator is auto
cycling.
Delivered pressure is
low.
Monitored pressure is
low.
Leak Compensation is not
on.
Verify that the Leak Compensation
Extended Features option is set to On
(default setting is off). See the LTV
®
1200
or the LTV
®
1150 Ventilator Operator's
Manual for more information.