B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-24-55-991-003 Fig. 402
3. Job Set-up
__________ Subtask 24-24-55-941-052
A. Safety Precautions
(1) In the cockpit, on the overhead panel 35VU, make sure that these pushbutton switches are released:
-BAT 1, BAT 2,
-GEN 1(2), APU GEN,
-EXT PWR.
(2) In the cockpit, put a warning notice to tell persons not to operate the pushbutton switches on the overhead panels: - 21VU (EMER ELEC PWR), - 35VU (ELEC).
(3) Make sure that the external power connector is not connected to the aircraft receptable EXT PWR.
(4) Put a warning notice on the access door 121AL to tell persons not to connect the external power connector.
Subtask 24-24-55-010-051
B. Get access to the Avionics Compartment
(1) Put an access platform at the access doors 812 and 822.
(2) Open the access doors 812 and 822.
Subtask 24-24-55-865-053
C. Open, safety and tag this(these) circuit breaker(s):
R R R -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------106VU AC ESS/BUS/EMER/CNTOR/SPLY 15PC C08 106VU AC ESS BUS/EMER/STBY/CNTOR/SPLY 10XE C06
Subtask 24-24-55-010-053
D. Get Access
(1) In the avionics compartment, remove the access panel (13) from the AC/DC emergency power center 106VU.
4. Procedure_________
(Ref. Fig. 402/TASK 24-24-55-991-003)
R R CAUTION : MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU DISCONNECT_______ THEM. INCORRECT CONNECTION OF WIRES WILL CAUSE DAMAGE TO EQUIPMENT.
Contactor
Figure 402/TASK 24-24-55-991-003
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Subtask 24-24-55-020-051
A. Removal of the Contactor
(1)
Disconnect the two electrical connectors (5).
(2)
Put blanking caps on the electrical connectors (5) and the electrical receptacles (4).
(3)
Loosen the nuts (6).
(4)
Remove the nuts (6) and the washers (7).
(5)
Remove the power supply wires (8) and the retaining washers (9).
R (6) Remove the crimped lugs (10) with the shunts (11) and but do not R discard them.
(7)
Loosen the 4 nuts (12).
(8)
Hold the contactor (2).
(9)
Remove the 4 nuts (12) and washers (1).
(10) Remove the contactor (2).
TASK 24-24-55-400-002 Installation of the AC ESS BUS Contactor (15XE) WARNING : MAKE SURE THAT NO AC OR DC POWER IS CONNECTED TO THE AIRCRAFT
_______ ELECTRICAL CIRCUITS. THERE IS A RISK OF ELECTROCUTION IF THE AC OR DC POWER STAYS CONNECTED.
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific warning notice
No specific access platforms 1.8 m (5 ft. 11 in.)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-24-00-710-001 Operational Test of the Emergency Generation System
24-28-00-710-001 Operational Test of the Static Inverter (3XB) when the Aircraft Electrical Circuits are Energized from the External Power
24-24-55-991-003 Fig. 402
3. Job Set-up
__________ Subtask 24-24-55-860-053
A. Aircraft Maintenance Configuration
(1)
In the cockpit, on the overhead panel 35VU, make sure that these pushbutton switches are realeased:
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