-
the single audio warning is heard. On the ECAM upper display unit:
-
the warning message CAB PR SAFETY VALVE OPEN comes on.
-release the diaphragm. On the ECAM lower display unit:
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
-
the open valve symbol closes and changes to green and the amber SAFETY indication changes to green.
On the panels 130VU and 132VU:
-
the amber light in the two MASTER CAUTION pushbutton switches go off.
On the ECAM upper display unit:
-
the warning message CAB PR SAFETY VALVE OPEN goes off.
NOTE : Do this test again for the other safety valve.
____
5. Close-up
________ Subtask 21-31-00-860-062
A. Do the EIS stop procedure
(Ref. TASK 31-60-00-860-002).
Subtask 21-31-00-410-050
B. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Close the access to the safety valves. Subtask 21-31-00-862-055
C. De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002).
TASK 21-31-00-720-001
Functional Test of the Positive and Negative Delta P Protection of the Safety Valves
R R R R NOTE : If the test set NORD MICRO PN 0622-19857-01 is not available the test____ set NORD MICRO PN 0622-19857-02 can be used and vise versa. If either one of the test sets is not available send the safety valves to the vendor (NORD MICRO).
1. Reason for the Job__________________
Refer to the MPD TASK: 213100-05
2. Job Set-up Information______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
R R No specific No specific No specific No specific No specific 0622-19857-02 circuit breaker(s) safety clip(s)constant negative pressure supply of minimum 20 mbar (0.3 PSI)constant positive pressure supply of minimum 610 mbar (8.85 PSI) TEST SET - VALVE ACTUATING (0622-19857-01) as alternative to -02access platform 3.4 m (11 ft. 2 in.)1 TEST SET - VALVE ACTUATING
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
21-31-00-710-006 24-41-00-861-002 24-41-00-862-002 21-31-00-991-001 Operational Test of Safety Valve Position IndicationEnergize the Aircraft Electrical Circuits from the External PowerDe-energize the Aircraft Electrical Circuits Supplied from the External PowerFig. 501
3. Job Set-up
__________
(Ref. Fig. 501/TASK 21-31-00-991-001)
Subtask 21-31-00-861-060
A. Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
Subtask 21-31-00-010-054
B. Get Access
(1) Put the access platform in position at the access panel 312AR.
(2) Remove the access panel 312AR. R (3) In the cabin remove the food trolleys from the Aft galley and remove
R the access panel (1) Subtask 21-31-00-865-060
C. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
49VU AIR COND/CAB/PRESS/CTL1 1HL D09 122VU AIR COND/CAB PRESS/CTL/MAN 3HL Y23 122VU AIR COND/CAB PRESS/CTL/2 2HL Y22
4. Procedure
_________
Subtask 21-31-00-480-053
A. Functional Test of the Safety Valve
(1) Installation of the Test Equipment TEST SET - VALVE ACTUATING (0622-19857-02) TEST SET - VALVE ACTUATING (0622-19857-01) as alternative to -02. (Ref. Fig. 501/TASK 21-31-00-991-001)
(a)
On the Test Set 1 Make sure that the pressure controller (18) and the vacuum
(b)
On the Aircraft: 1 Connect the test wiring to the safety valve
_ controller (25) are fully closed.
R Safety Valve - Differential Pressure Test Figure 501/TASK 21-31-00-991-001- 12 (SHEET 1)
1EFF : 1 1 1CES ALL 1 111 21-31-00 Page 522 Feb 01/04
R Safety Valve - Differential Pressure Test Figure 501/TASK 21-31-00-991-001- 22 (SHEET 2)
1EFF : 1 1 1CES ALL 1 111 21-31-00 Page 523 Feb 01/04
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