Podcast
Questions and Answers
What is the required pressure rating for the cylinder?
What is the required pressure rating for the cylinder?
What should be checked before installing the quick connect coupling?
What should be checked before installing the quick connect coupling?
What action should be taken to release the quick connect from the cylinder valve?
What action should be taken to release the quick connect from the cylinder valve?
Which component must be inspected for damage during the pressure reducer setup?
Which component must be inspected for damage during the pressure reducer setup?
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What should be done to ensure the bell is properly installed?
What should be done to ensure the bell is properly installed?
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During the cylinder and valve assembly check, what should be verified about the gauge face?
During the cylinder and valve assembly check, what should be verified about the gauge face?
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What condition should the latch on the cylinder band fulfill?
What condition should the latch on the cylinder band fulfill?
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What is essential to check regarding the control module's buttons?
What is essential to check regarding the control module's buttons?
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What is the first step in unlocking the battery module?
What is the first step in unlocking the battery module?
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What should be done after ensuring a proper seal with the facepiece?
What should be done after ensuring a proper seal with the facepiece?
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What does the control module display need to be consistent with during testing?
What does the control module display need to be consistent with during testing?
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What should happen when the bypass knob is fully closed?
What should happen when the bypass knob is fully closed?
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What is the purpose of holding the breath for approximately 10 seconds during the check?
What is the purpose of holding the breath for approximately 10 seconds during the check?
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What is indicated by the buddy lights flashing green?
What is indicated by the buddy lights flashing green?
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What should you do after pressurizing the system by opening the cylinder valve?
What should you do after pressurizing the system by opening the cylinder valve?
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Which function do both reset buttons on the control module serve?
Which function do both reset buttons on the control module serve?
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Study Notes
Quick Connect Fittings
- Ensure quick connect fittings are properly functioning and securely attached.
- To release, turn the quick connect counterclockwise a quarter turn and pull away from the cylinder valve.
Pressure Reducer
- Check for dirt or debris on male and female ends before installation.
- Tighten the adapter on the cylinder valve securely.
- Inspect the high pressure relief valve for any damage.
- Reattach handwheel to the cylinder valve; push the coupling until an audible snap indicates connection.
- Handgrip rotation indicates successful valve connection; it should rotate approximately 45° counter-clockwise.
- Ensure alignment and tightness of the bell; it should not rotate or feel loose.
Cylinder and Valve Assembly
- Check the hydrostatic test date on the cylinder approval sticker located on the neck.
- Ensure visibility of the gauge face and check that the gauge stem is not bent.
- Confirm presence of the rubber boot on the cylinder valve.
- Cylinder pressure must be 4050 PSI or greater.
Carrier Assembly
- Test the latch on the cylinder band for proper operation and secure holding of the cylinder.
- Confirm that the unit identifier is present.
- Ensure the lumbar pad is securely attached.
- Check that the power module and pressure reducer are securely attached to the backplate.
Control Module
- Inspect displays for cracks or visible damage.
- Check for damaged or missing buttons.
- Verify that the hose assembly is securely attached.
- Ensure gauge face visibility and check gauge stem condition.
Power Module and Battery Module
- Use the battery removal tool to unlock and remove the battery module.
- Inspect battery module for visible damage and check the connection seal.
- Reinsert the battery module and turn off the PASS device.
Negative Pressure Check
- Close the cylinder valve and purge air from the system using the bypass knob or purge cover.
- Create an effective seal by holding the facepiece against the face.
- Attach regulator to the facepiece; inhale until facepiece collapses against the face.
- Maintain breath for approximately 10 seconds; facepiece should remain collapsed to confirm negative pressure.
Functionality Checks
- Ensure the bypass knob is fully closed before pressurizing the system.
- Open the cylinder valve to initiate system pressurization.
- Observe LED starting sequence on the regulator.
- Listen for the power module sound and primary low-pressure warning alarm.
- Verify that buddy lights flash green and gauge displays correct pressure readings.
- Test for consistency within 5% (225 PSI) between graphical display and analog gauge on control module; use reset buttons appropriately.
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Description
This quiz assesses your knowledge on the proper procedures for operating pressure reducer valves, including securing quick connect fittings and inspecting relief valves.
