Operator’s Manual LTV
®
Series ventilator Page 15-7
p/n 10664, Rev. Y
Symptoms Possible Causes What to Do
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 and spring.
Reseat the spring and diaphragm valve and snap
the peep valve back in place. See page 13-11 for
a diagram of correct exhalation valve assembly.
If necessary, replace the exhalation diaphragm,
PEEP spring 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 and replaced
incorrectly, they may not seal correctly when
replaced. Replace the patient wye and sense
lines with a known good assembly.
Leak Compensation is
not on.
Verify that the Leak Compensation extended
features option is set to On (default setting is on).
See page 10-12 for instructions.
Failed autozero. Perform an autozero under XDCR ZERO. See
page 10-23 for more information.
continued…
Monitored volume is
low.
Delivered volume is
low.
Failed calibration or
internal problem with
the ventilator.
Immediately contact a certified Pulmonetic
Systems’ service technician.
Delivered volume is
half the set volume.
VHome setting does
not match flow valve.
Immediately contact a certified Pulmonetic
Systems’ service technician.
Delivered pressure is
low, PEEP is low,
ventilator is
autocycling.
Delivered pressure is
low.
Monitored pressure is
low.
Circuit leak. Run a leak test and reseat or replace the leaking
parts or connections. See page 11-8 for
instructions.
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