Datex-Ohmeda Anesthesia Delivery Unit S/5 Technical Reference Manual page 398

Datex-Ohmeda ADU
error / % Technical reason
no
Coml = Compliance errors
15,35,55, compl < 1 ml/cmH
75
14,34,54, Ppeak – Pendexp < 50
74 mmH O
2
16,36,56, compl > 10 ml/cmH
76
78 Pplatmax > Ppeak. The
difference between the
lowest and highest
compliance is larger than
0.7 ml/cmH
Discn = Disconnection errors
4 Ppat > 12 mmH
17,37,57,7 Bottle > 170 mmH2O
7 and Ppat < 120 mmH
94 Ppat < 21 mmH
96 Ppat < 200 mmH
C-72
O Compliance error during
2
one of the four
measurement cycles.
Measured compliance
below lower limit.
Compliance error during
one of the four
measurement cycles.
Pressure difference is
too small for calculation
of compliance.
O Compliance error during
2
one of the four
measurement cycles.
Measured compliance
above higher limit.
Compliance error during
one of the four
measurement cycles.
Big difference between
O. the four compliance
2
calculations.
O Bellows not filled during
2
the start-up phase of
the test. Pressure too
low after 15 sec.
Disconnection during
O one of the four
2
measurement cycles. To
big difference between
the bottle and circuit
pressure.
O Disconnection during
2
one of the four
measurement cycles.
Bellows not filled after
10 sec.
O Disconnection during
2
the last fill-up cycle of
the bellows. Pressure
too low after 4 second.
Possible cause
Suggested action
- Big obstruction inside the bellows block.
- Replace bellows block.
- One or more components in the breathing circuit
have too large compliance.
- To long tubing's
- Silicon tubing's are not recommended to use, it
will increase the compliance in the system.
- Check connections and tubing's.
- Replace tubing's.
Big leak in circuit tubing's.
- Circuit tubing's bad connected.
- Absorber leaks or wrong connected.
- Insp./exp. valves covers are not installed.
- Gasket underneath bellows block is missing.
- The Y-piece is not occluded or a patient bag is
connected to it.
- Overflow valve missing in bellows block.
- Compact block have a big leak.
- Fresh gas hose not connected between the
compact block and fresh gas outlet.
- No test flow is coming from the freshgas control
unit / check the O Test valve function.
2
- Following Leak Tracing Chart for Auto Leak Test in
the "Technical Reference Manual".
Document No. 8502855