CareFusion LTV 1200 Service Manual page 102

FVd Delivered Volume:
1) Apply 15 cmH O to the flow valve differential transducer at the high side port and verify
2
the FVd readout is within ± 0.5 cmH
2) Disconnect the tube from the syringe to the high pressure port of the valve differential
transducer so the connection is open to ambient air. When the displayed value
stabilizes, verify the FVd readout is within ± 0.5 cmH
FDw Monitored Volume:
1) Apply 30 cmH O to the Flow Differential transducer at the high side port and verify the
2
FDw readout is within ± 0.5 cmH
2) Disconnect from the ventilator so the connection is open to ambient air. When the
display value stabilizes, verify the FDw readout is within ± 0.5 cmH
FDb Inspired Volume (LTM Only):
1) Apply 30 cmH O to the Flow Differential transducer at the low side port and verify the
2
FDb readout is within ± 0.5 cmH
2) Disconnect from the ventilator so the connection is open to ambient air. When the
display value stabilizes, verify the FDb readout is within ± 0.5 cmH
O Oxygen Inlet Pressure:
2
1) Apply 50 PSI to the high pressure oxygen inlet port and verify the readout is applied
pressure ± 1 PSI.
2) Disconnect from the ventilator so the connection is open to ambient air. When the
display value stabilizes, verify the readout is 0 ± 0.5 PSI.
Transducer Tolerance Variance Table:
Transducer
tolerance range
AP
FVd
FDw
FDb
O
2
 If transducer recalibration is indicated, recalibrate that transducer (see Chapter 6 -
Maintenance & Calibration for instructions) and repeat the test.
 If analog board replacement is indicated, replace the analog PCBA. See Analog Board
Assembly in Chapter 8 for instructions and repeat the test.
 If the results for the transducers are within tolerance, perform the flow valve Accuracy
Checkout tests to determine accuracy of the flow valve.
p/n 18603-001, Rev. J
O of the applied pressure.
2
O of the applied pressure.
2
O of the applied pressure.
2
Acceptable
Recalibrate transducer if
transducer
variance to tolerance is;
± 0.5 cmH O >0.5 but < 2.5 cmH
2
± 0.5 cmH O >0.5 but < 0.75 cmH
2
± 0.5 cmH O >0.5 but < 1.5 cmH
2
± 0.5 cmH O >0.5 but < 1.5 cmH
2
± 1.0 PSI
®
LTV 1200, 1150, and 1100 Ventilator Service Manual
O.
2
O
2
O
2
O
2
O
2
>1.0 but < 2.5 PSI
O.
2
O.
2
Replace analog board
if variance to
tolerance is;
>2.5 cmH O
2
>0.75cmH O
2
>1.5 cmH O
2
>1.5 cmH O
2
>2.5 PSI
Page 7-25