Installation of the Aft Galley Unit

TASK 25-33-50-400-801-A
Installation of the Aft Galley Unit

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

WARNING: BE CAREFUL WHEN YOU REMOVE OR INSTALL THIS EQUIPMENT. THIS EQUIPMENT IS HEAVY (MORE THAN 12 KG (26.5 lb)) AND CAN CAUSE INJURY AND/OR DAMAGE.

ZONE: 260
FIN: 6482MM ** ON A/C NOT FOR ALL

1. Reason for the Job
Self Explanatory

NOTE: More than one person is necessary for this procedure.

2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
260	AFT CABIN UTILITY AREA

B. Referenced Information

REFERENCE	DESIGNATION
TASK 12-15-38-613-001-A	Fill the Potable Water Tank System (Aircraft Electrical Power Available)
TASK 12-33-21-618-001-A-01	Pre-conditioning through the HP Ground Connection
TASK 12-33-21-618-001-A-02	Pre-conditioning with the APU
TASK 38-10-00-614-001-A	Pressurization of the Potable Water System from a Ground Air Supply

3. Job Set-up
Subtask 25-33-50-865-051-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
122VU	ELEC/GALLEY/CNTOR	7MC	S28
122VU	ELEC/GALY & CAB/CTL	1XA	S26
122VU	AIR COND/LAV/GALLEY VENT CTL/EXTRACT FAN/CTL	5HU	U21
122VU	AIR COND/LAV/GALLEY VENT CTL/EXTRACT FAN/SPLY	6HU	U19
123VU	AFT GALLEY/FEEDER E	14MC	AF09
123VU	AFT GALLEY/FEEDER A	3MC	AF04
2001VU	POT/WASTE WIP-HEATER-LINE	31DW	D03

4. Procedure
Subtask 25-33-50-865-052-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
122VU	ELEC/GALLEY/CNTOR	7MC	S28
122VU	ELEC/GALY & CAB/CTL	1XA	S26
122VU	AIR COND/LAV/GALLEY VENT CTL/EXTRACT FAN/CTL	5HU	U21
122VU	AIR COND/LAV/GALLEY VENT CTL/EXTRACT FAN/SPLY	6HU	U19
123VU	AFT GALLEY/FEEDER E	14MC	AF09
123VU	AFT GALLEY/FEEDER A	3MC	AF04
2001VU	POT/WASTE WIP-HEATER-LINE	31DW	D03

Subtask 25-33-50-710-050-B ** ON A/C NOT FOR ALL

B. Operational Test of the Galley Systems
(1) Do a check of the air supply as follows:
(a) Do the pre-conditioning with the APU (Ref. AMM TASK 12-33-21-618-001) or the HP ground connection (Ref. AMM TASK 12-33-21-618-001).
(b) Turn the air outlet clockwise until it is in the closed position.
(c) Make sure that no air comes out from the air outlet.
(d) Examine all the air hoses and the connections for leaks.
(e) If you find leaks, repair them.
(f) Turn the air outlet counterclockwise until it is in the open position.
(g) Make sure that the intensity of the airflow changes when you turn the air outlet.
(2) Do a check of the potable water and drain systems as follows:
(a) Make sure that the potable water system is filled (Ref. AMM TASK 12-15-38-613-001).
(b) Pressurize the potable water system (Ref. AMM TASK 38-10-00-614-001).
(c) Examine all the potable water hoses for leaks.
(d) If you find leaks, repair them.
(e) Operate the faucet and make sure that water flows.
(f) Let the water flow until it is clean.
(g) Examine all the drain water hoses for leaks.
(h) If you find leaks, repair them.
(3) Do an operational test of the galley electrical system as follows:
(a) On the galley control panel, make sure that all the circuit breakers are closed.
(b) Operate each electrical unit/component for a short time to make sure that it is serviceable.

ACTION	RESULT
1.In the flight compartment, on ELEC panel 35VU:	On the galley control panel:
Push 2XA GALLEY pushbutton switch.	The POWER indicator light comes on.
2.On the galley control panel:	In the galley:
Set the work light switch to the BRIGHT position.	The galley work light comes on brightly.
Set the work light switch to the DIM position.	The galley work light comes on dimly.
Set the work light switch to the OFF position.	The galley work light goes off.
3.In the flight compartment, on ELEC panel 35VU:	On the galley control panel:
Release 2XA GALLEY pushbutton switch.	The POWER indicator light goes off.

[Rev.10 from 2021] 2026.03.31 23:33:51 UTC