BOMBARDIER CHALLENGER 604, Maintenance Manual

Page: 6 / 8

WARNING: MAKE SURE THAT YOU DO NOT PUT TO MUCH PRESSURE
INTO THE OXYGEN CYLINDER. FULL PRESSURE IS
DEPENDENT ON AMBIENT TEMPERATURE. IF YOU PUT TOO
MUCH PRESSURE INTO THE OXYGEN CYLINDER, THE GREEN
DISC ON THE OVERBOARD DISCHARGE INDICATOR(S) (1) WILL
BREAK.
(e) Slowly pressurize the crew oxygen cylinder (at a rate of 200 psi (1 379 kPa)
maximum per minute) until the crew oxygen cylinder is fully charged as per
placard.
(f) When the pressure in the crew oxygen cylinder is at the fully charged level,
decrease the supply pressure from the oxygen cart to zero.
(g) Slowly loosen the filler line at the oxygen filler valve (4) to release the pressure
out of the filler line.
(h) When the pressure is released from the filler line, disconnect the filler line from
the oxygen filler valve (4).
(i) Install the dust cap (3) on the oxygen filler valve (4).
(2) Remove the tags and close the circuit breakers that follow:
LOCATION CB NUMBER CB NAME ZONE
CBP−2 M3 BATT BUS POWER SENSE 222
CBP−2 M4 RCCB CONT MAIN BATT 222
CBP−2 M5 RCCB CONT APU BATT 222
CBP−2 M7 FEED 1 BATT BUS 222
CBP−2 M9 FEED 2 BATT BUS 222
(3) Do a quantity check of the oxygen system (TASK 12−14−35−610−801).
(4) Close the oxygen refill connection door (212BR).
F. Close Out
(1) Remove all tools, equipment, and unwanted materials from the work area.
CL−604 AIRCRAFT MAINTENANCE MANUAL − PART II
EFFECTIVITY: ALL
12−14−35
Page 306
Nov 28/2008