What are the function checks of SCBA (Self Contained Breathing Apparatus)?

Function Checks:
  • Close cylinder valve.
  • Breathe normally to vent system.
  • During venting observe gauge – whistle alarm should sound at preset pressure of 55bar +/-5bar.
  • When gauge indicates ro, hold breath. Face piece should hold onto face indicating positive seal.
  • Open cylinder valve slowly, but fully to pressurize system.
  • Inhale and hold breath. Unit must balance, i.e. no audible leak.
  • Continue breathing. Expired air should easily flow out of exhalation valve.
  • Press center of rubber cover on demand valve checking supplementary supply.

Note: If leak detected, open cylinder valve, readjust head harness and retest.

During Use: