Page 15-6 LTV
®
Series ventilator Operator’s Manual
p/n 10664, Rev. Y
Symptoms Possible Causes What to Do
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.
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 and replaced
incorrectly, they may not seal correctly when
replaced. Replace the patient wye and sense
lines with a known good assembly.
Failed autozero. Perform an autozero under XDCR ZERO. See
page 10-23 for more information.
continued…
Monitored volume is
high.
Delivered volume is
high.
Failed calibration or
internal problem with
the ventilator.
Immediately contact a certified Pulmonetic
Systems’ service technician.
Delivered volume is
twice the set
volume.
VHome setting does
not match flow valve.
Immediately contact a certified Pulmonetic
Systems’ service technician.
Circuit leak. Do a leak test and reseat or replace the leaking
parts or connections. See page 11-8 for
instructions.
Monitored volume is
low.
Delivered volume is
low.
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.
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