BOMBARDIER CHALLENGER 604 Maintenance Manual
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TASK 12−14−35−610−801
1.
Quantity Check of the Oxygen System
A.
Reference Information
REFERENCE
TASK 12−00−07−861−801
TASK 12−00−07−861−802
TASK 12−14−35−614−801
B.
Job Set−Up
(1) Connect and energize the external ac power (TASK 12−00−07−861−801).
(2) Open the oxygen service door that follows:
ACCESS
212BR
C.
Refer to Figure 301.
(1) At the oxygen refill connection door, examine the pressure gauge (1). Make note of
the value shown on the pressure gauge (1).
(2) Examine the overboard discharge indicator (2). Make sure that the green disc on
the indicator (2) is not broken. If the green disc is broken, there is too much
pressure in the crew oxygen system.
NOTE:
(3) In the flight compartment, do the steps that follow:
(a) Examine the oxygen quantity indication on the status page of the engine
indication and crew alerting system (EICAS).
(b) Compare the indication on the pressure gauge (1) with that of the EICAS
readout. Make sure that the values are less than 100 psi (689.50 kPa) of each
other.
EFFECTIVITY: ALL
CL−604 AIRCRAFT MAINTENANCE MANUAL − PART II
REPLENISHING, OXYGEN SYSTEM - SERVICING
Connect and Energize External AC Power
Remove External AC Power
Door, Oxygen Refill Connection
Aircraft with two oxygen cylinders have two overboard discharge
indicators.
DESIGNATION
DESIGNATION
12−14−35
Page 301
Nov 28/2008
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Summary of Contents for BOMBARDIER CHALLENGER 604
- Page 1 CL−604 AIRCRAFT MAINTENANCE MANUAL − PART II REPLENISHING, OXYGEN SYSTEM - SERVICING TASK 12−14−35−610−801 Quantity Check of the Oxygen System Reference Information REFERENCE DESIGNATION TASK 12−00−07−861−801 Connect and Energize External AC Power TASK 12−00−07−861−802 Remove External AC Power TASK 12−14−35−614−801 Servicing of the Oxygen System Job Set−Up (1) Connect and energize the external ac power (TASK 12−00−07−861−801).
- Page 2 CL−604 AIRCRAFT MAINTENANCE MANUAL − PART II (c) Use the table that follows to make sure that the crew oxygen system is fully pressurized: CREW OXYGEN SYSTEM AMBIENT TEMPERATURE FULLY PRESSURIZED 100°F (37°C) 1990 psi (13.720 kPa) 80°F (27°C) 1990 psi (13.100 kPa) 60°F (16°C) 1805 psi (12.445kPa) 40°F (4°C)
- Page 3 CL−604 AIRCRAFT MAINTENANCE MANUAL − PART II NOTE Aircraft with two oxygen cylinders have two overboard discharge indicators. Quantity Check of the Crew Oxygen System − Servicing Figure 301 EFFECTIVITY: ALL 12−14−35 Page 303 Nov 28/2008...
- Page 4 CL−604 AIRCRAFT MAINTENANCE MANUAL − PART II TASK 12−14−35−614−801 Servicing of the Oxygen System Reference Information REFERENCE DESIGNATION TASK 12−00−07−861−802 Remove External AC Power TASK 12−14−35−610−801 Quantity Check of the Oxygen System TASK 35−00−00−910−801 Oxygen Safety Precautions TASK 35−11−01−000−801 Removal of Oxygen Cylinder and Regulator Assembly TASK 35−11−01−400−801 Installation of Oxygen Cylinder and Regulator...
- Page 5 CL−604 AIRCRAFT MAINTENANCE MANUAL − PART II (2) Make sure that the BATTERY MASTER switch in the flight compartment is set to OFF. (3) Open, safety and tag the circuit breakers that follow: LOCATION CB NUMBER CB NAME ZONE CBP−2 BATT BUS POWER SENSE CBP−2 RCCB CONT MAIN BATT...
- Page 6 CL−604 AIRCRAFT MAINTENANCE MANUAL − PART II 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.
- Page 7 CL−604 AIRCRAFT MAINTENANCE MANUAL − PART II NOTE Aircraft with two oxygen cylinders have two overboard discharge indicators. Servicing of the Oxygen System − Servicing Figure 302 EFFECTIVITY: ALL 12−14−35 Page 307 Mar 13/2009...
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