Service and repair
Puritan Bennett™ 700 Series Ventilator System Service Manual
10070389 Rev. A
8-35
8.7.2 Installing oxygen regulator, oxygen solenoid assembly, mixing
manifold, and cylinder inlet check valve
Install the oxygen regulator, oxygen solenoid assembly, mixing manifold, and cylinder inlet
check valve by reversing removal procedure.
Warning
To minimize fire hazard, inspect and clean as necessary any ventilator parts that come
into contact with oxygen.
NOTE:
• When reinstalling the inlet check valve, make sure leaf faces toward the inside of the
ventilator. Installing the check valve backwards prevents the unit from ventilating.
• To prevent the check valve and gasket from falling out during installation, try
inclining the ventilator slightly.
• When installing a new oxygen solenoid assembly, always (1) input the calibration
constants for the new assembly into NVRAM (Chapter 4), and (2) install calibration
constants label supplied over existing “OXYGEN MIXING SYSTEM” section of
Calibration Constants label on underside of ventilator lid.
• When installing a new oxygen solenoid assembly, transfer the existing oxygen
pressure transducer (with 19-mm extension adapter) to the new oxygen solenoid
assembly. Replace PTFE tape (P/N G-060759-00) on the threads of the pressure
transducer and extension adapter.
• When installing a new oxygen regulator, replace all four hex screws and ensure that
they are tightened.
8.7.3 Oxygen regulator pressure transducer
(See Figure 8-30). Remove the oxygen regulator pressure transducer as follows. Install by
reversing removal procedure.
1.
Remove oxygen regulator (Section 8.7, steps 1 through 4).
2.
Using 19-mm open-ended wrench, remove pressure sensor from oxygen regulator port.
NOTE:
• When installing the sensor, remove any existing tape, and apply new PTFE tape
(G-060759-00) on the threads. To prevent tape debris from coming loose and
entering the pneumatic system, do not wrap tape around the first two threads.
• After installing the transducer, run an oxygen regulator pressure transducer
calibration (Section 4.2.3.2.2).
Summary of Contents for Puritan Bennett 700 Series
Page 1: ...Service Manual Puritan Bennett 700 Series Ventilator Systems TM...
Page 439: ......
