R EFF : 001-049, 101-105, 107-107, 151-199, 49-20-00Page 302 201-210, Config-2 Aug 01/05
CES
-------------------------------------------------------------------------------
REFERENCE DESIGNATION -------------------------------------------------------------------------------
52-41-00-410-001 Close the APU Doors after Access
3. Job Set-up__________
Subtask 49-20-00-620-055
A. Table 301
----------------------------------------------Storage
Period Installed APU
----------------------------------------------One to At the start of the storage
45 days period, operate the APU
at no-load governed speed for at least 20 minutes. Cover or plug openings to prevent entrance of water or foreign matter.
----------------------------------------------
45 to At the beginning of the
180 days storage period, operate
at no-load governed speed for at least 5 minutes. Perform preservation procedure in accordance with para. 4. A.
----------------------------------------------
More than If APU is not to be
180 days operated, it is recommended
that the APU be removed from A/C, preserved and stored.
R EFF : 001-049, 101-105, 107-107, 151-199, 49-20-00Page 303 201-210, Config-2 Aug 01/05
CES ----------------------------------------------
APU to be removed from Storage A/C for maintenance and/or Period storage ----------------------------------------------One to Remove APU and install 45 days caps and covers in
accordance with para. 4. A.
step (15). ----------------------------------------------45 to Remove APU and perform 180 days preservation procedure
in accordance with para.
4. B. ----------------------------------------------More than Remove APU and perform 180 days preservation procedure
in accordance with para.
4. B.
Subtask 49-20-00-860-073
B. Aircraft Maintenance Configuration
(1)
Energize the ground service network
(Ref. TASK 24-42-00-861-001).
(2)
On the panel 25VU, make sure that the APU MASTER SW p/bsw is OFF.
(3)
Put a warning notice in the cockpit to tell persons not to start the APU.
(4)
Make sure that hydraulic systems are depressurized
(Ref. TASK 29-00-00-864-001).
Subtask 49-20-00-865-083
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41
R EFF : 001-049, 101-105, 107-107, 151-199, 49-20-00Page 304 201-210, Config-2 Aug 01/05
CES Subtask 49-20-00-010-066
D. Get Access
(1)
Put the access platform in position below the APU access doors 315AL and 316AR.
(2)
Open the access doors 315AL and 316AR (Ref. TASK 52-41-00-010-001).
(3)
Set the LIGHT SW 11LJ to the ON position.
(4)
Put a container in position of the flow divider and drain-valve assy.
4. Procedure
_________ Subtask 49-20-00-620-056
A. APU Preservation
(1) Disconnection of fuel supply CAUTION : DO NOT PUT HYDROCARBON FUEL(S)/OIL(S) INTO THE ENGINE
_______ COMPRESSOR. THEY CAN BURN SUDDENLY AND DAMAGE THE APU.
(a) Disconnect the main fuel supply pipe from the solenoid (Ref. TASK 49-32-13-000-001).
(2)
Let the fuel drain into the container.
(3)
Disconnection of electrical supply WARNING : DISCONNECT THE LOW TENSION ELECTRICAL SUPPLY 5 MINUTES
_______ BEFORE YOU START WORK ON THE IGNITION SYSTEM. ALSO, GROUND THE IGNITER LEAD WITH AN INSULATED DEVICE AS YOU DISCONNECT IT FROM THE IGNITER PLUG. HIGH CURRENT AND VOLTAGE, WHICH ARE USED IN THE IGNITION SYSTEM, CAN KILL YOU.
(a) Disconnect the electrical connector P10 from the ignition unit (Ref. TASK 49-41-38-000-003).
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