Pulmonetic Systems LTV 950 - Page 209

Operator’s Manual LTV
®
Series ventilator Page 15-9
p/n 10664, Rev. Y
Symptoms Possible Causes What to Do
Diaphragm is
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.
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.
Failed autozero. Perform an autozero under XDCR ZERO. See
page 10-23 for more information.
Delivered pressure is
high.
Monitored pressure is
high.
Failed calibration or
internal problem with
the ventilator.
Immediately contact a certified Pulmonetic
Systems’ service technician.
Delivered pressure
increases towards
end of inspiration.
VHome setting does
not match flow valve.
Immediately contact a certified Pulmonetic
Systems’ service technician.
Disconnected
Exhalation Drive Line.
Leaks in the Patient
Circuit.
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.
Failed autozero. Perform an autozero under XDCR ZERO. See
page 10-23 for more information.
Delivered flow is high.
Delivered flow is low.
Failed calibration or
internal problem with
the ventilator.
Immediately contact a certified Pulmonetic
Systems’ service technician.
Bias flow is 20 lpm or
5 lpm instead of 10
lpm.
VHome setting does
not match flow valve.
Immediately contact a certified Pulmonetic
Systems’ service technician.