Questions and Answers
What is the intermediate pressure set by the pressure reducer of the G1 system?
What feature ensures continued airflow to the user during a malfunction in the pressure reducer?
At what pressure does the relief valve in the pressure reducer activate?
Which component serves as a power supply and provides information for the control module in the G1 system?
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What notification does the power module provide when the rechargeable batteries need to be recharged?
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What is the primary function of the G1 control module?
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How is the G1 control module connected to the high pressure air source?
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What does the primary low pressure warning device activate at?
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Which component provides weight distribution and prevents slippage of the straps?
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What is the drag rating of the hop handle on the backplate?
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What is the purpose of the pressure-relief device in the cylinder valve assembly?
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What are the three components of the PASS device in the G1 SCBA?
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How does the cylinder band contribute to the overall structure?
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How long does the PASS device wait before going into full alarm after detecting motionlessness?
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Which of the following features is NOT associated with the shoulder pads?
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What can be used to check the battery status without powering on the SCBA?
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What function does the backplate serve in the G1 Carrier and Harness Assembly?
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What happens when the battery power indicator is yellow?
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How long does the battery of the MSA G1 SCBA take to fully charge?
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What function does the G1 speaker module perform during use?
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How can the speaker module be turned off?
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What is the maximum pressure for the Eclipse cylinder?
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What material primarily comprises the exterior of the Eclipse cylinder?
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What is the weight of the Eclipse cylinder?
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What is the minimum pressure for the SCBA to be in service?
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What kind of fitting does the pressure reducer have?
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What is a key feature of the SCBA's pressure relief system?
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What is the diameter of the Eclipse cylinder?
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What should you NOT do with a partially charged cylinder?
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What type of teams utilize the RIT/UAC fitting?
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Study Notes
G1 Pressure Reducer
- Reduces cylinder pressure to an intermediate level of 115 PSI for user safety.
- Features a fail-safe design to ensure continuous air flow even during malfunctions.
- Relief valve activates between 200-250 PSI to prevent overpressure.
- Connects to cylinder valve assembly via a handwheel assembly.
- Equipped with an intermediate pressure relief valve and a sintered filter to capture particulates.
- Quick Connect fitting allows easy connection and disconnection; uses a safety pin to prevent accidental disconnect.
G1 Power Module
- Acts as the power supply for the SCBA system and other components.
- Connected to the backplate and includes features like audible PASS alarms and buddy lights.
- Contains non-replaceable lithium-ion cells in the rechargeable battery module.
- Notifies users when recharging is needed through sounds, display icons, and blinking LEDs.
- Includes a RIT light for visibility during low-pressure alarms in dark conditions.
- Data logging feature records operational information while the control module is active.
- Equipped with an internal real-time clock for operational timing.
G1 Control Module
- Serves as the user interface for the SCBA system.
- Connected to the high-pressure air source and power module via a pneumatic and electronic hose.
- Includes an analog gauge in addition to a graphical display for vital data like estimated time remaining.
PASS Device
- Monitors user movement; pre-alarm alerts within 20 seconds of motionlessness.
- Full alarm sounds after 30 seconds if user motionlessness continues.
- Also tracks cylinder pressure and battery status.
G1 Speaker Module
- Clarifies speech from the facepiece during use; inhibits breathing sounds while inhaling.
- Can be turned on/off via its button and acknowledges activation with a beep.
Battery
- Utilizes a rechargeable Lithium Ion battery to power lights, communications, and controls.
- Provides 6-8 hours of operation with all features active.
- Battery can be checked without turning on the SCBA; changes require pressing green buttons for 3-5 seconds.
- Battery indicator shows yellow when only two hours remain; charging takes 4-6 hours.
Cylinder Valve Assembly
- Features a large pressure gauge with a photoluminescent face for visibility.
- Includes a non-locking handwheel and pressure-relief device for safe venting of overpressured cylinders.
Primary Low Pressure Warning Device (Bell)
- Alarm activates at 35% of the SCBA's rated service pressure (~1575 PSI) indicating low pressure.
G1 Carrier and Harness Assembly
- Comprises a backplate, cylinder band with latch, padded straps, lumbar support, and waist belt.
- Ergonomically designed to distribute weight and enhance user comfort during use.
Backplate
- Includes ergonomic design with large handles for ease of handling and storage.
- Handles rated for significant drag loads (1000 lbs for hop handle and 500 lbs for side handles).
Cylinder Band
- Metal construction securely retains the cylinder and simplifies installation/removal.
Shoulder Pads
- Enhance weight distribution and visibility with retroreflective materials and provide a secure fit via steel buckles.
- Feature snap buttons for easy release and exchange; facepiece clip can be attached to straps.
Cylinder Specifications
- Utilizes the low-profile Eclipse cylinder, notable for its black color.
- Constructed of seamless aluminum with carbon fiber over-wrap and fiberglass fibers.
- Rated at 4500 PSI for a service time of 45 minutes; weighs 13.5 lbs with a diameter of 6.1 inches.
- Minimum operational pressure set at 4050 PSI; partial charges are prohibited for storage.
Rapid Intervention Team/Universal Air Connection (RIT/UAC)
- RIT/UAC fitting for emergency filling operations by intervention teams.
- Includes an automatically resetting pressure relief valve for safety during filling.
- Compatible with all SCBA manufacturers for versatile use.
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Description
This quiz covers the essential features of the G1 Pressure Reducer and Power Module used in SCBA systems. Learn about their safety mechanisms, power supply functions, and other critical components. Test your understanding of how these devices contribute to user safety and effectiveness in emergency situations.
