Pressure Reducer Valve Operations

Questions and Answers

What is the required pressure rating for the cylinder?

4500 PSI or greater

4040 PSI or greater

3500 PSI or greater

4050 PSI or greater (correct)

What should be checked before installing the quick connect coupling?

Ensure the adapter is loose

Make sure the valve is empty

Check for dirt or debris on the coupling ends (correct)

Confirm the quick connect is broken

What action should be taken to release the quick connect from the cylinder valve?

Turn it clockwise a quarter of a turn

Pull it straight out without turning

Twist it rapidly in both directions

Turn it counterclockwise a quarter of a turn (correct)

Which component must be inspected for damage during the pressure reducer setup?

High pressure relief valve Signup and view all the answers

What should be done to ensure the bell is properly installed?

It should be tightly aligned without movement Signup and view all the answers

During the cylinder and valve assembly check, what should be verified about the gauge face?

It should be clearly visible Signup and view all the answers

What condition should the latch on the cylinder band fulfill?

It should open and close properly Signup and view all the answers

What is essential to check regarding the control module's buttons?

They should be fully functional Signup and view all the answers

What is the first step in unlocking the battery module?

Use the battery removal tool to unlock the battery module. Signup and view all the answers

What should be done after ensuring a proper seal with the facepiece?

Inhale until the facepiece collapses. Signup and view all the answers

What does the control module display need to be consistent with during testing?

The cylinder pressure within 5% (225 PSI). Signup and view all the answers

What should happen when the bypass knob is fully closed?

No air should escape the system. Signup and view all the answers

What is the purpose of holding the breath for approximately 10 seconds during the check?

To ensure negative pressure is maintained. Signup and view all the answers

What is indicated by the buddy lights flashing green?

The device is operational and in good condition. Signup and view all the answers

What should you do after pressurizing the system by opening the cylinder valve?

Listen for the power module and primary low pressure alarm. Signup and view all the answers

Which function do both reset buttons on the control module serve?

Resetting the motion alarm and testing the manual alarm. Signup and view all the answers

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.