CareFusion LTV 1200 Service Manual page 283

D) Turn the PPin solenoid off. Set
the turbine speed to 10 and
monitor the PPP transducer
reading.
E) Turn the PPout solenoid off.
F) Set SERVO to OFF. Apply 15 
0.5 cmH O to the high flow
2
XDCR port, and turn the Apres
solenoid on. After reading, turn
the Apres solenoid off.
G) Apply and maintain 15  0.5
cmH O pressure to the low and
2
high flow XDCR port, turn the
Purge solenoid on for 3 sec, and
then turn it off.
H) Apply 15  0.5 cmH
the low and high flow XDCR
ports, and turn the ExhDiffP
solenoid on. After reading, turn
the ExhDiffP solenoid off.
I) Apply and maintain 15 cmH
pressure to the high flow XDCR
port.
10) Perform a Watchdog test
A) Unit under test:
AC adapter
Patient circuit attached
Test lung(s) attached
B) Navigate to WDOG TEST under
the VENT MTNCE menu and
press Select.
89
It is normal for a RESET alarm to occur at the conclusion of POST after performing the Watchdog test, Battery
Duration test, or any other test that which causes the ventilator to go inoperative (other than pressing and
holding the On/Standby button). Press the Silence/Reset button twice to clear the alarm.
Page 9-24
O to both
2
O
2
89
.
®
LTV 1200, 1150, and 1100 Ventilator Service Manual

Leakage rate must be ≤ 1 cmH
one minute

The PPP value under the RT XDCR DATA
menu must be  0.5 cmH
measured pressure

Pressure at the exhalation drive port must
be 0.0  0.1 cmH
2
 AP and FDw display must read 0  0.5
cmH O after activating the solenoid.
2

FDw display must read 0 ± 0.5 cmH
before and after activating the solenoid.
 FDw display must read 0  0.5 cmH
before activating the solenoid and must
equal AP  0.5 cmH
 FDw display must read 15  0.5 cmH

Ventilator powers down, powers up,
and successfully performs POST

Ventilator alarms, constant audible
alarm and flashes RESET alarm

Clear alarms
O within
2
O of the
2
O.
O
2
O
2
O after.
2
O.
2
p/n 18603-001, Rev. J