12 Questions
What is the recommended replacement interval for the battery in the Sentinel?
Every 6 months
What is the purpose of the pressure relief valve in the breathing circuit?
To open when the pressure is between +20 and +50 mm of pressure
What is the correct reading on the pressure gauge during the exhalation valve test if the valve is operating properly?
-10 embar
What type of lubricant is recommended for O-rings in the breathing circuit?
Dow Corning 111
What is the maximum permissible pressure change during the positive pressure leak test within 1 minute?
Less than 1 embar
What is the approved cartridge type for the BG-4 apparatus?
Both factory-packed and refillable cartridges
What is the volume of the breathing bag in the BG-4 apparatus?
5.5 liters
What is the minimum flow rate provided by the minimum valve?
80 L/min
How often should the supply of oxygen gas on the Sentinel be checked?
Every 15 minutes
What is the pressure range for medium pressure in the BG-4 apparatus?
58 psi - 64 psi
What should be done with the belt and harness before storage?
Dry to prevent mold and fungus
What happens when the pressure drops to approximately 700 psi?
The first low pressure warning occurs
Learn about the proper procedures for testing and maintaining SENTINEL devices, including pressure leak tests, battery replacement, and lubrication. Understand the functions of key components like the pressure relief valve and test adapters. Ensure accuracy and safety in your testing protocols.
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