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Questions and Answers
What is the first step to check the manual activation of the PASS alarm?
What is the first step to check the manual activation of the PASS alarm?
What is the purpose of slowly opening the tank valve during the regulator and facepiece pressure checks?
What is the purpose of slowly opening the tank valve during the regulator and facepiece pressure checks?
What is the correct sequence of events during the regulator and facepiece pressure checks?
What is the correct sequence of events during the regulator and facepiece pressure checks?
What is the purpose of holding the facepiece away from the mask during the regulator and facepiece pressure checks?
What is the purpose of holding the facepiece away from the mask during the regulator and facepiece pressure checks?
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What is the final step in the regulator and facepiece pressure checks?
What is the final step in the regulator and facepiece pressure checks?
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What is the purpose of the PASS alarm?
What is the purpose of the PASS alarm?
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What is the correct procedure to check the manual activation of the PASS alarm?
What is the correct procedure to check the manual activation of the PASS alarm?
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What is the purpose of the HUD LED display?
What is the purpose of the HUD LED display?
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What is the first step in the regulator and facepiece pressure checks?
What is the first step in the regulator and facepiece pressure checks?
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What is the final step in the entire process?
What is the final step in the entire process?
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Study Notes
SCBA Components and Inspections
- The type of BA used is a self-contained open circuit, positive pressure breathing apparatus.
- The 4 components of the breathing apparatus are:
- Mask
- Cylinder
- Back pack (Frame)
- Regulator
Visual Inspections: Mask
- Inspect rubber for a tight seal and secure fit to the lens ring
- Inspect head harness
- Inspect lens for scratches, deformation, and color change (HUD)
- Check Light ports are undamaged
- Ensure Nose cup is in correct disposition
Visual Inspections: Cylinder & Valve Assembly
- Inspect rubber boot is present and dove tail is not damaged or cracked
- Inspect gauge face and needle
- Inspect cylinder valve
- Ensure Pressure relief valve is secure
- Inspect cylinder body for cracks, damage, faceplate, whims label, or discoloration
- Hydrostatic test date should be within 5 years
- Pressure Reducer with low pressure warning device should be present
- Inspect pressure relief valve (Label is not damaged)
- Inspect hose and connections, ensuring O-ring is present on High-Pressure connection
Carrier and Harness Assembly
- Ensure bell is properly aligned and screws are tight
- Operate latch on cylinder band to ensure it opens and closes properly and holds the cylinder securely
- Inspect backplate & power module/pressure reducer are secured
- Inspect all harness components (straps, lumbar pad, hoses, buckles, regulator keeper & chest strap)
- Ensure Speaker Module is attached and secure to shoulder strap
- Inspect TIC Sensor for cleanliness and freedom from debris
- Control Module should be undamaged
Regulator (Demand Valve)
- Ensure it is free of moisture and debris
- Seals (Orange & grey) should be present and functional
- Bypass function should be operational
Power Module
- Inspect for damage
- Inspect LED's on all sides
- Ensure black O-ring is present on battery
- Functional test: insert battery, wait for unit to power on, then turn off
Functional Tests
- Check cylinder pressure is full (Above 4000PSI)
- Open Cylinder valve and listen for alarm on up-swing
- Allow gauges to equalize (within 5%)
- Close tank valve and perform 10-second bleed down (no more than 100psi)
- Open bypass and ensure low air alarm engages at 3537% of rated bottle capacity (1575PSI)
- Alarm functions audibly until 200 PSI or less
- Allow control module to remain motionless for approximately 18-20 seconds and verify PASS pre-alarm functions
- Verify buddy lights are flashing red
- Verify red LED is flashing in the HUD
- Verify White LED illuminates
- Verify shaking control module does not silence PASS
- Check manual activation of the PASS alarm by pressing and holding the alarm button on the front of the control module until the alarm activates
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Description
Test your knowledge of SCBA breathing apparatus components, including the type of BA used and its 4 essential parts. Identify the components and demonstrate your understanding of this critical equipment.
