BOMBARDIER CHALLENGER 604 Maintenance Manual

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.

Procedure

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
Servicing of the Oxygen System
Door, Oxygen Refill Connection
Aircraft with two oxygen cylinders have two overboard discharge
indicators.
DESIGNATION
DESIGNATION
12−14−35
Page 301
Nov 28/2008