(2)
Open the access door 824.
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B. Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
NOTE : The energization of the aircraft electrical circuits starts the
____ full test of the ventilation system. The test continues for 2 minutes approximately. Do not connect the manometer until this test is completed.
Subtask 21-26-42-860-053
C. Aircraft Maintenance Configuration
(1)
Remove the protective caps from the pressure ports. The pressure ports of the filter cartridge are black.
(2)
Connect the MANOMETER (EMA84) to the pressure ports.
4. Procedure
_________ (Ref. Fig. 606/TASK 21-26-42-991-007) Subtask 21-26-42-210-061
A. Check for Blockage of the Filter Cartridge
(1) If the differential pressure is more than 16.5 mbar (0.23 psi):
(a) Clean the filter (Ref. CMM 212600) or replace it by a new one (Ref. TASK 21-26-43-600-011).
5. Close-up
________ Subtask 21-26-42-862-057
A. De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002).
Subtask 21-26-42-860-054
B. Put the aircraft back to its initial configuration.
(1)
Disconnect the MANOMETER (EMA84) from the pressure ports.
(2)
Install the protective caps on the pressure ports.
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Check for Blockage of the Filter Cartridge with Pressure Ports
Figure 606/TASK 21-26-42-991-007
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C. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Close the access door 824 (Ref. TASK 52-41-00-410-002).
(3)
Remove the access platform(s).
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TASK 21-26-42-200-006
Check for Blockage of the Demister Filter with the Pressure Ports
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific manometer 0 to 0.3447 bar (0 to 5 psi)
No specific access platform 1.60 m (5 ft. 3 in.)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
21-26-43-600-016 Discard Demister Filter 21-26-43-600-017 Discard Filter Cartridge 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
from the External Power 52-41-00-410-002 Close the Avionics Compartment Doors after Access 21-26-42-991-012 Fig. 607
3. Job Set-up
__________
Subtask 21-26-42-010-062
A. Get Access
(1)
Put the access platform in position at the access door 824.
(2)
Open the access door 824.
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B. Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
NOTE : The energization of the aircraft electrical circuits starts the
____ full test of the ventilation system. The test continues for 2 minutes approximately. Do not connect the manometer until this test is completed.
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