(c)
Remove the blanking caps from the electrical connectors.
(d)
Make sure that the electrical connectors are clean and in the correct condition.
(e) Connect the electrical connector 970WR-A (3). Subtask 35-23-54-865-052
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1WR, 2WR.
Subtask 35-23-54-790-050
C. Do this leak check (Ref. TASK 35-23-00-790-001). Subtask 35-23-54-720-050
D. Test of the Low Pressure Switch (970WR)
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the overhead panel 20VU in the cockpit:
-Examine the Passenger Oxygen Indication Panel (POXIP).
2. On the overhead panel 20VU in the cockpit:
-Push the TEST pushbutton on the POXIP for approx. 1 sec.
On the overhead panel 20VU in thecockpit:
-Make sure that there is no 'LO PR'indication on the POXIP.
On the overhead panel 20VU in thecockpit:
-All indication lights on the POXIPcome on.
-On the display of the POXIP the indication '8888' comes on.
On the overhead panel 20VU in the cockpit, after 3 seconds:
-All indication lights on the POXIP go off.
-On the display of the POXIP some indications of a BITE-Test comes on.
-------------------------------------------------------------------------------ACTION RESULT
-------------------------------------------------------------------------------On the overhead panel 20VU in the cockpit, after 6 seconds:
-On the display of the POXIP the indication of the oxygen system pressure comes on.
Subtask 35-23-54-440-050
E. Pressurize the Emergency Oxygen System
(1)
Slowly open the manual shut-off valves of the emergency oxygen cylinders 3.5 to 4 turns.
(2)
Let the pressure become stable.
NOTE : This occurs after approximately 90 seconds.
____
(3)
Fully open the manual shut-off valves of the emergency oxygen cylinders.
Subtask 35-23-54-942-050
F. Remove the warning notice(s).
5. Close-up
________ Subtask 35-23-54-410-050
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Install the related lining panel to close access to the oxygen storage (Ref. TASK 25-55-12-400-003).
(3)
Set the CARGO COMPT LIGHT switch 8LU to the OFF position.
(4)
Remove the access platform(s).
(5)
Close the AFT cargo-compartment door 826 (Ref. TASK 52-30-00-860-002).
Subtask 35-23-54-862-050
B. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
VALVE - PRESSURE RELIEF (7000WR) - REMOVAL/INSTALLATION
_______________________________________________________
TASK 35-23-55-000-001
Removal of the Pressure Relief Valve (7000WR)
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s) No specific TEST TOOL - MANUAL RELEASE No specific access platform 1.6 m (5 ft. 3 in.) No specific 1 BAG - VINYL No specific 1 PLUG - BLANKING No specific 1 WARNING NOTICE
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 25-55-12-000-003 Removal of the Sidewall Panels in the AFT Cargo Compartment - FR59/FR65 35-00-00-860-001 Special precautions when working on a Gaseous Oxygen System 52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump 35-23-55-991-001 Fig. 401
3. Job Set-up
__________
Subtask 35-23-55-861-050
A. Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
Subtask 35-23-55-865-050
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU OXYGEN/PASSENGER/CTL AND WARN 2WR HA03 49VU OXYGEN/PASSENGER/CTL AND WARN 1WR HA02
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