Removal of the Air Chiller Unit - Aft Galley

TASK 25-34-51-000-002-A
Removal of the Air Chiller Unit - Aft Galley

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

1. Reason for the Job
Self Explanatory

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

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
260	AFT CABIN UTILITY AREA

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
Air Chiller - AFT Galley

3. Job Set-up
Subtask 25-34-51-861-051-A ** ON A/C NOT FOR ALL

A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).

Subtask 25-34-51-941-051-A ** ON A/C NOT FOR ALL

B. Safety Precautions
(1) In the cockpit, on the overhead panel, on the AIR COND section of panel 30VU:
(a) Make sure that these pushbutton switches are released:

APU BLEED pushbutton switch (the ON legend is off)
All the ENG BLEED pushbutton switches (the OFF legends are on)
PACK 1 and PACK 2 pushbutton switches (the OFF legends are on).

(b) Put the WARNING NOTICE(S) in position to tell persons not to operate these pushbutton switches.
(2) On the HP and LP ground-air connectors, put the WARNING NOTICE(S) in position to tell persons not to connect the ground air supply.

Subtask 25-34-51-865-088-A ** ON A/C NOT FOR ALL

C. Open, safety and tag 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

Subtask 25-34-51-010-051-L ** ON A/C NOT FOR ALL

D. Get Access
(1) If necessary, remove the contents of the galley.
(2) If necessary, remove the decorative material(s).
(3) If necessary, remove the galley trolley(s).

4. Procedure
Subtask 25-34-51-020-052-W ** ON A/C NOT FOR ALL

A. Removal of the Air Chiller Unit - Aft Galley

Air Chiller - AFT Galley ** ON A/C NOT FOR ALL

WARNING: SUPPORT THE UNIT/ASSEMBLY. THE UNIT/ASSEMBLY IS HEAVY. IF YOU DO NOT SUPPORT IT, IT WILL FALL. THIS CAN CAUSE INJURY TO PERSONS, AND/OR DAMAGE TO EQUIPMENT.

(1) Remove the screws (5), the washers (6) and the divider panels (7).
(2) Remove the screws (1) and (3) and the access covers (2) and (4).
(3) Disconnect the electrical connector (8) from the connector (9).
(4) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(5) Remove the screws (12) and the washers (11).
(6) Carefully remove the air chiller (10).

[Rev.10 from 2021] 2026.04.01 06:15:20 UTC