Used Philip V200 Ventilator Monitor Parts Exhalation Flow Sensor Valve Assy PN 1001321

Used Philipilip Respironics V200 Ventilator Exhalation Flow Sensor Valve assy PN 1001321 Ventilator Parts

Philipilip Respironics V200 Ventilator Exhalation Flow Sensor Valve assy PN 1001321

► Brief Introduction

The exhalation valve is controlled by a stepper motor. At the beginning of an inspiration, the exhalation valve shuts to create a closed circuit and allow the patient system to pressurize. The exhalation valve opens at the beginning of exhalation, allowing system pressure to vent to atmosPhilipilipere.

The exhalation valve also regulates positive end expiratory pressure (PEEP) and expiratory positive airway pressure (EPAP) levels during exhalation.

► Theory of Operation

The exhalation filter reduces the risk of contamination or component damage due to bacteria or moisture in expired gases. The exhalation filter is housed in a heated sleeve, which reduces the relative moisture condensation in the exhalation filter, exhalation valve, and expiratory flow sensor. Exhaled gas is then vented to atmosPhilipilipere.

► Removal

Follow these steps to remove the exhalation flow sensor.

1. Separate the top from the bottom enclosure.

2. Move the enclosure brace aside.

3. Cut the tie wraps that hold the exhalation flow sensor to the exhalation valve and to the EXH F/S cable.

4. Disconnect the EXH F/S cable from the exhalation flow sensor.

5. Using a 3-mm hex driver, remove the screw that holds the exhalation valve outlet port to the exhalation valve.

6. Using a 4-mm hex driver, remove the screw that holds the exhalation valve to the bottom enclosure standoff.

7. Push the flow sensor toward the vent port.

8. Wiggle the outlet port to remove it from the exhalation valve. Remove the flow sensor.

► Installation

Follow these steps to install the exhalation flow sensor.

NOTE: You must install the filter heater and exhalation valve assemblies before reinstalling the exhalation flow sensor.

1. Gently push the exhalation flow sensor body through the bottom enclosure vent port. Make sure the flow direction arrow on the sensor points toward the vent port.
2. Verify that check valve CV4 is oriented and seated properly.

NOTE: It is not necessary to inspect CV4 if you are installing a new exhalation valve.

NOTE: Check valve CV4 should remain inside the exhalation valve when the outlet port is removed. If CV4 falls out, reinstall it into the exhalation valve assembly.

3. Inspect the two O-rings on the exhalation valve outlet port. Replace the O-rings if they are cracked or deformed. Lightly lubricate O-rings with Krytox GPL226 lubricant.
4. Squarely position the exhalation valve outlet port to the exhalation valve outlet and fully insert it into the exhalation valve.
5. Using a 3-mm hex driver, install the screw that holds the exhalation valve outlet manifold to the exhalation valve.

CAUTION: To avoid damaging the flow sensor, hand tighten only (do not tighten tie wraps with a tool).

6. Using a 4-mm hex driver, install the screw that holds the exhalation valve outlet port to the bottom enclosure standoff.
7. Insert the flow sensor completely into the exhalation valve outlet port (use a slight rotating motion) and fasten it with a tie wrap.
8. Connect the EXH F/S cable to the flow sensor and fasten it with a tie wrap. See Figure 10-39 for tie wrap positioning.
9. Install the enclosure brace.
10. Install the top enclosure.

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