CareFusion LTV 1200 Service Manual page 105

2) If the flow output is out of the acceptable output flow range, perform the following, in the
order shown.
 Check all flow valve flexible tubing for leaks or occlusions and replace any
damaged components.
 Recalibrate the flow valve transducer (see Valve Differential Calibration in
Chapter 6 for instructions).
 If flow valve recalibration is indicated, recalibrate the flow valve by adjusting the
VHOME setting (see Flow Valve Calibration in Chapter 6 for instructions).
 If flow valve replacement is indicated, see Flow Valve Assembly in Chapter 8 for
instructions.
O Blender Checkout
2
Verify the O blender Solenoid output flows, as follows:
2
1) Remove the O blender (see O2 Blender Assembly in Chapter 8 for instructions).
2
2) Reconnect the 8-wire connector from the O
O tube Pisco connector to the O
2
3) Connect a calibrated flow meter to the blender output barb fitting and a 50 psi O
to the blender O
2
4) Set DIP switch # 5 to ON.
5) Power the ventilator On (in VENT MTNCE mode), select SOLENOID and set solenoids
# 1 through # 4 to Off.
6) Verify each (of four) solenoid's output flow is 0.0 Lpm ± 0.5 Lpm.
 If any are not within this range, the O
7) Select each solenoid individually, set to On and record the output flow.
 If the output flows of all solenoids are within the specified range, the O
correctly calibrated.
 If the output flow of any one of the solenoids is not within the specified range, the O
blender is defective and is to be replaced.
8) Set DIP switch # 5 to Off, power the ventilator Off and reinstall or replace the O
per instructions O2 Blender Assembly in Chapter 8.
Page 7-28
pressure transducer on the analog board.
2
inlet.
Solenoid
1
2 17.45 to 18.15 Lpm
3 46.36 to 48.24 Lpm
4 46.36 to 48.24 Lpm
®
LTV 1200, 1150, and 1100 Ventilator Service Manual
blender to the power board and the blender
2
blender is defective and is to be replaced.
2
Range
5.79 to 6.01 Lpm
source
2
blender is
2
2
blender
2
p/n 18603-001, Rev. J