Introduction
This guide provides step-by-step information on how to replace the Flow Sensor Receptacle for the Cardinal Health Vela Ventilator.
The flow sensor is used for measuring the flow rate of the gas passing through the ventilator. It is a crucial component of the ventilator, and must receive periodic sterilization.
The Flow Sensor may need to be removed/replaced for the following reasons:
- The Flow Sensor must be sterilized in an autoclave.
- The Flow Sensor may need to be replaced if monitored volumes are out of the 20% specification.
Viasys’ replacement guide for the Flow Sensor can be found on page 37 of the service manual attached.
What you need
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Use a screwdriver to remove the two Phillips pan-head screws at the top of the plug guard.
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Remove all six small side panel screws along the bottom of each side of the top cover.
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Use your Phillips screwdriver to unscrew the 4 Phillips pan head screws positioned on each side of the battery tray.
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Disconnect the batteries from the ventilator by pulling apart the Battery Connector.
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Remove the 2 Phillips countersink screws from the right side of the rear panel.
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Remove the 1 Phillips countersink screw in the upper front of the right panel.
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Remove the 1 Phillips pan-head screw in the lower center of the right panel.
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Gently lift out the panel and the power PCB. Lay the panel flat and make the following disconnections:
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Remove the 2 Phillips countersink screws at the rear of the left panel.
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Remove the 1 Phillips countersink screw in the upper front of the left panel.
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Lift out the left panel.
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Disconnect the following from the main PCB:
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JP2 40-pin ribbon cable to JP1 on the SVGA out PCB
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J301 12-pin to J301 on the blender PCB
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Disconnect the green oxygen nebulizer tube
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Remove the 2 Phillips pan-head screws behind the front panel at the lower left and right.
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Disconnect the 1/8” silicone tube #4 from P2 on the exhalation differential transducer
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Disconnect the 1/8” silicone tube #5 from P1 on the exhalation differential transducer
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Disconnect the 1/8” silicone tube #1 from the turbine
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Disconnect the 1/16” silicone tube from the front ports of the turbine outlet auto-zero solenoid that goes to the main tubing harness.
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Disconnect the 1/16” silicone tube from the turbine inlet auto-zero solenoid that goes to the turbine.
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Disconnect the 1/16” silicone tube from the airway pressure auto-zero solenoid that goes to the exhalation valve receptacle.
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To reassemble your device, follow these instructions in reverse order.
Attached Documents
Team
Cal Poly, Team S11-G22, Paton Spring 2020 Member of Cal Poly, Team S11-G22, Paton Spring 2020
CPSU-PATON-S20S11G22
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3 Guides authored
