Difficulty
Difficult
Steps
24
Time Required
2 hours
Sections
1
- Flow Sensor Receptacle
- 24 steps
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Introduction
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
Featured Document
Step 1
Flow Sensor Receptacle
- Use a screwdriver to remove the two Phillips pan-head screws at the top of the plug guard.
Use a screwdriver to remove the two Phillips pan-head screws at the top of the plug guard.
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Step 2
- Remove the plug guard and unplug the ventilator.
Remove the plug guard and unplug the ventilator.
Step 3
- Remove the 4 Phillips pan-head screws on the back side of the ventilator.
Remove the 4 Phillips pan-head screws on the back side of the ventilator.
Step 4
- Remove all six small side panel screws along the bottom of each side of the top cover.
Remove all six small side panel screws along the bottom of each side of the top cover.
Step 5
- Slide the top cover towards the back side of the ventilator to remove it.
Slide the top cover towards the back side of the ventilator to remove it.
Step 6
- Use your Phillips screwdriver to unscrew the 4 Phillips pan head screws positioned on each side of the battery tray.
Use your Phillips screwdriver to unscrew the 4 Phillips pan head screws positioned on each side of the battery tray.
Step 7
- Lift the battery tray out of the ventilator.
- Caution: The wires connecting the batteries to the ventilator will still be connected so lift the battery tray carefully.
Lift the battery tray out of the ventilator.
Caution: The wires connecting the batteries to the ventilator will still be connected so lift the battery tray carefully.
Step 8
- Disconnect the batteries from the ventilator by pulling apart the Battery Connector.
Disconnect the batteries from the ventilator by pulling apart the Battery Connector.
Step 9
- Remove the 2 Phillips countersink screws from the right side of the rear panel.
Remove the 2 Phillips countersink screws from the right side of the rear panel.
Step 10
- Remove the 1 Phillips countersink screw in the upper front of the right panel.
Remove the 1 Phillips countersink screw in the upper front of the right panel.
Step 11
- Remove the 1 Phillips pan-head screw in the lower center of the right panel.
Remove the 1 Phillips pan-head screw in the lower center of the right panel.
Step 12
- Gently lift out the panel and the power PCB. Lay the panel flat and make the following disconnections:
Gently lift out the panel and the power PCB. Lay the panel flat and make the following disconnections:
Step 13
- Remove the 2 Phillips countersink screws at the rear of the left panel.
- Remove the 1 Phillips countersink screw in the upper front of the left panel.
- Lift out the left panel.
Remove the 2 Phillips countersink screws at the rear of the left panel.
Remove the 1 Phillips countersink screw in the upper front of the left panel.
Lift out the left panel.
Step 14
- Disconnect the following from the main PCB:
- JP2 40-pin ribbon cable to JP1 on the SVGA out PCB
- J301 12-pin to J301 on the blender PCB
Disconnect the following from the main PCB:
JP2 40-pin ribbon cable to JP1 on the SVGA out PCB
J301 12-pin to J301 on the blender PCB
Step 15
- Disconnect the green oxygen nebulizer tube
- Remove the 2 Phillips pan-head screws behind the front panel at the lower left and right.
- Disconnect the 1/8” silicone tube #4 from P2 on the exhalation differential transducer
- Disconnect the 1/8” silicone tube #5 from P1 on the exhalation differential transducer
- Disconnect the 1/8” silicone tube #1 from the turbine
Disconnect the green oxygen nebulizer tube
Remove the 2 Phillips pan-head screws behind the front panel at the lower left and right.
Disconnect the 1/8” silicone tube #4 from P2 on the exhalation differential transducer
Disconnect the 1/8” silicone tube #5 from P1 on the exhalation differential transducer
Disconnect the 1/8” silicone tube #1 from the turbine
Step 16
- Disconnect the 1/16” silicone tube from the front ports of the turbine outlet auto-zero solenoid that goes to the main tubing harness.
- Disconnect the 1/16” silicone tube from the turbine inlet auto-zero solenoid that goes to the turbine.
- Disconnect the 1/16” silicone tube from the airway pressure auto-zero solenoid that goes to the exhalation valve receptacle.
Disconnect the 1/16” silicone tube from the front ports of the turbine outlet auto-zero solenoid that goes to the main tubing harness.
Disconnect the 1/16” silicone tube from the turbine inlet auto-zero solenoid that goes to the turbine.
Disconnect the 1/16” silicone tube from the airway pressure auto-zero solenoid that goes to the exhalation valve receptacle.
Step 17
- Disconnect the following from the main PCB:
Step 18
Step 19
- Loosen 7 Phillips pan-head screws on the main PCB.
Loosen 7 Phillips pan-head screws on the main PCB.
Step 20
- Lift the main PCB out of the front panel.
Lift the main PCB out of the front panel.
Step 21
- Disconnect the 2 1/16” ID tubes to the main tubing harness
Disconnect the 2 1/16” ID tubes to the main tubing harness
Step 22
- Disconnect the grey 6-pin connector.
Disconnect the grey 6-pin connector.
Step 23
- Remove the 2 1/4” nuts on the flow sensor PCB.
Remove the 2 1/4” nuts on the flow sensor PCB.
Step 24
- Lift off the flow sensor PCB
Lift off the flow sensor PCB
To reassemble your device, follow these instructions in reverse order.
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Attached Documents
- Vela Service Manual Draft
- PDF - 4.98 mb
- View
Vela Service Manual Draft
PDF - 4.98 mb
Author
with 1 other contributor
Ethan Nikcevich
Member since: 04/07/2020
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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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