Subtask 21-26-54-710-050
C. Do an operational test of the ventilation system of the avionics
equipment (Ref. TASK 21-26-00-710-001).
NOTE : As an alternative procedure, you can do this operational test
____
without the CFDS (Ref. TASK 21-26-00-710-001).
5. Close-up
________ Subtask 21-26-54-410-050
A. 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). Subtask 21-26-54-862-051
B. De-energize the ground service network (Ref. TASK 24-42-00-862-001). VALVES - SKIN EXCHANGER (16HQ,23HQ,24HQ) - REMOVAL/INSTALLATION
_______________________________________________________________ TASK 21-26-55-000-001 Removal of the Avionics Ventilation Skin Exchanger Inlet Bypass Valve (16HQ)
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking caps
No specific blanking plugs
No specific circuit breaker(s) safety clip(s)
No specific access platform 1.6 m (5 ft. 3 in.)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-42-00-861-001 Energize the Ground Service Network from the External
Power 53-12-13-000-001 Removal of the avionics compartment floor panels 21-26-55-991-002 Fig. 401
3. Job Set-up
__________
CAUTION : USE ONLY THE GROUND SERVICE NETWORK TO SUPPLY ELECTRICITY BECAUSE
_______ THE AVIONICS VENTILATION SYSTEM IS NOT SERVICEABLE. IF YOU ENERGIZE THE AIRCRAFT ELECTRICAL CIRCUITS WITHOUT THE VENTILATION SYSTEM YOU WILL CAUSE DAMAGE TO ELECTRICAL EQUIPMENT.
Subtask 21-26-55-861-057
A. Energize the ground service network
(Ref. TASK 24-42-00-861-001).
Subtask 21-26-55-865-060
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR COND/AVNCS VENT/CTL 6HQ D06
Subtask 21-26-55-010-055
C. Get Access
(1)
Put the access platform in position at the access door 824.
(2)
Open the access door 824.
(3)
Remove the access panel 128EG (Ref. TASK 53-12-13-000-001).
4. Procedure
_________ (Ref. Fig. 401/TASK 21-26-55-991-002) R **ON A/C 001-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
Subtask 21-26-55-020-054
A. Removal of the Skin Exchanger Inlet Bypass Valve
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