Installation of the System 1 (2) Transformer

TASK 33-14-51-400-002-A
Installation of the System 1 (2) Transformer

ZONE: 212
FIN: 36LP
FIN: 37LP

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	CAP - BLANKING

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
212	COCKPIT

C. Referenced Information

REFERENCE	DESIGNATION
TASK 33-14-00-710-001-A	Operational Check of the Light Test System
System 1 (2) Transformer

3. Job Set-up
Subtask 33-14-51-865-055-A

A. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
122VU	LIGHTING/TST/BOARD/SPLY	30LP	X06
FOR FIN: 36LP (XFMRSYS 2)
122VU	LIGHTING/ANN LT SPLY/XFMR/BUS 2	27LP	X05
FOR FIN: 37LP (XFMRSYS 1)
122VU	LIGHTING/ANN LT SPLY/XFMR/BUS 1	26LP	X04

Subtask 33-14-51-010-053-A

B. Get Access
(1) Make sure that the panel(s) 121VU and/or 122VU is (are) removed.
(2) Make sure that the quick-disconnect fasteners are loosened for these panels:
(a) FOR [37LP] (XFMR-SYS 1)
122VU.
(b) FOR [36LP] (XFMR-SYS 2)
122VU, 121VU.
(3) Make sure that these panels are pulled to the front.

4. Procedure
Subtask 33-14-51-420-051-A

A. Installation of the Transformer
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the CAP - BLANKING from the electrical connector.
(4) Make sure that all the electrical connections are clean and in the correct condition.
(5) Install the new transformer (1).
(6) Install the four screws (3) and the washers (2) that attach the transformer (1) to the structure.
(7) Connect the movable connector (4) to the transformer.

Subtask 33-14-51-410-050-A

B. Install these panels. Attach them with the quick-disconnect fasteners:
(1) FOR [37LP] (XFMR-SYS 1)
122VU
(2) FOR [36LP] (XFMR-SYS 2)
122VU, 121VU

Subtask 33-14-51-865-054-A

C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
122VU	LIGHTING/TST/BOARD/SPLY	30LP	X06
FOR FIN: 36LP (XFMRSYS 2)
122VU	LIGHTING/ANN LT SPLY/XFMR/BUS 2	27LP	X05
FOR FIN: 37LP (XFMRSYS 1)
122VU	LIGHTING/ANN LT SPLY/XFMR/BUS 1	26LP	X04

Subtask 33-14-51-710-051-A

D. Do the operational test (Ref. AMM TASK 33-14-00-710-001).

5. Close-up
Subtask 33-14-51-942-051-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.

[Rev.10 from 2021] 2026.04.01 00:53:09 UTC