servicing oxygen

what do you use when servicing

rig or cart

what type of oxygen

aviators oxygen

oxygen servicing is required for

onboard oxygen system bottles

aviators breathing oxygen

• Pure oxygen 

• Moisture controlled 

• Dewpoint of -85F

difference between medical oxygen and aviators oxygen

medical oxygen has moisture

oxygen cart systems

drive and oxygen

drive side consists of

nitrogen bottle plumbed into a regulator

drive side inlet port

attach nitrogen bottle or shop air as the power source for the oxygen booster pump

moisture trap and filter to purify gas source

drive side regulator

controls output pressure from the nitrogen bottle (max 125psi)

drive side pump

has its own regulator to the oxygen booster

what do you set the pump pressure to

200psi higher than aircraft system oxygen pressure

oxygen side consists of

input regulator from the oxygen bottles

shutoff valve that controls the flow to the output side of pump

what is used to supply pressure when cart pressure is greater than aircraft pressure

differential pressure

what is used to supply pressure when cart pressure is lower than aircraft pressure

oxygen booster pump

oxygen booster pump consists of

nitrogen side (input) and oxygen side (output)

max output of pump

2200 psi

min output of pump

200psi

overpressure blowout disc

dumps all oxygen when bottle is overpressurized

servicing port consists of

protective cap

check valve to prevent oxygen from escaping when cap is removed

how can you tell if the bottle has been tampered with

witness wired open