Respironics ESPRIT Service Manual page 224

Chapter 9
Component Removal/Installation
9-58
Oxygen
valve Tie wrap
Flow sensor
circuit board
Figure 9-69: Oxygen Flow Sensor
Follow these steps to install the oxygen flow sensor:
NOTE:
• The oxygen regulator assembly, oxygen module assembly, and
inspiratory manifold assembly must be installed before reinstalling the
oxygen flow sensor.
• When reinstalling the oxygen flow sensor, ensure that it is fully
installed to the oxygen valve assembly and the oxygen inspiratory port.
• Always inspect o-rings between interconnecting parts and replace if
visibly damaged or rough to the touch. Always use new o-rings
supplied with replacement parts. Lightly lubricate o-rings with Krytox
GPL226 lubricant when installing, and relubricate at every
reinstallation.
1. Slide the aluminum oxygen inspiratory port onto the outlet of the flow
sensor.
2. With the flow arrow pointing toward the inspiratory manifold, insert the
flow sensor into the oxygen valve outlet port, then push the aluminum
sleeve into the inspiratory manifold.
• The circuit board on the flow sensor must face up.
• Route cables MTR O
sensor.
• The flow sensor and aluminum sleeve must be pushed completely
into their respective ports.
3. Place the clamp around the outlet of the flow sensor and fasten with
the 4-mm screw.
Esprit® Ventilator Service Manual © Respironics, Inc.
4-mm screw and clamp
at flow sensor outlet
Inspiratory
O flow
2
sensor cable manifold
, MTR BV and MTR EV underneath the flow
2
Oxygen
inspiratory port
REF 580-1000-02 G