Service and repair
8-38
10070389 Rev. A
Puritan Bennett™ 700 Series Ventilator System Service Manual
8.8.2 Inspiration manifold thermistor
(See Figure 8-31). Remove the inspiration manifold thermistor as follows. Install by reversing
removal procedure.
1.
Open and prop lid (Section 8.5.1).
2.
Disconnect thermistor from ventilator head harness.
3.
Using 10-mm (for previous version) or 19-mm (for current version) open-ended wrench,
remove thermistor.
8.8.3 Safety valve assembly
Warning
The safety valve solenoid can get very hot. To prevent burns, be careful when servicing
the safety valve or adjacent inspiration manifold components.
(See Figure 8-31). Remove the safety valve assembly as follows. Install by reversing removal
procedure.
1.
Open and prop lid (Section 8.5.1).
2.
Remove inspiration access panel (Section 8.6.6, steps 3 through 11).
Caution
To prevent equipment damage, never disconnect any solenoids while power is applied.
3.
Disconnect safety valve solenoid from ventilator head harness.
4.
Using 2.5-mm hex driver, remove four M3 x 8 screws and split-ring washers that attach
safety valve assembly to inspiration manifold.
8.8.4 Removing/installing inspiration manifold assembly
(See Figure 8-33). Remove the inspiration manifold assembly as follows. Install by reversing
removal procedure.
1.
Open and prop lid (Section 8.5.1).
2.
Remove inspiration access panel and air intake manifold assembly (Section 8.6.6).
Caution
To prevent equipment damage, never disconnect any solenoids while power is applied.
3.
Disconnect safety valve solenoid, oxygen sensor, and thermistor from ventilator head
harness at cable management bar.
4.
Disconnect two pressure-sensing tubes from manifold (inspiration/atmospheric pressure
sensing and exhalation valve control). Disconnect large-bore elbow tube.
5.
Using 2.5-mm hex driver and/or key, remove four M3 x 8 screws and split-ring washers
that attach manifold assembly to cylinder. Remove manifold assembly.
6.
To remove check valve, remove gasket, then check valve.
Summary of Contents for Puritan Bennett 700 Series
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