Removal of the Condenser

TASK 21-52-32-000-001-A
Removal of the Condenser

WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.

NOTE: The procedure is the same for condensers 10HM2 and 11HM2.

FIN: 10HM2
FIN: 11HM2

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
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [10HM2] (CONDENSER)
191BB, 191KB
FOR [11HM2] (CONDENSER)
192FB, 192KB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 21-52-32-200-001-A	Attachment Components (In-Service Wear Limits) - Condensor
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 53-35-13-000-002-A	Removal of the Quick-Release Access Panels from the Belly Fairing Structure
Condenser - Component Location ** ON A/C NOT FOR ALL
Condenser - Component Location ** ON A/C NOT FOR ALL
Condenser - Component Location ** ON A/C NOT FOR ALL
Attachment Components - Condenser

3. Job Set-up
Subtask 21-52-32-861-051-A

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 21-52-32-865-050-A

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 10HM2 (CONDENSER)
49VU	AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC	52HH	D08
** ON A/C NOT FOR ALL
122VU	AIR COND/PACK TEMP/CTL SYS1/1/115VAC	1HH	X22
122VU	AIR COND/PACK TEMP/CTL SYS1/1/28VDC	3HH	X21
122VU	AIR COND/PACK TEMP CTL SYS2/1/28VDC	4HH	Y19
122VU	AIR COND/PACK TEMP CTL SYS2/1/115VAC	2HH	Y18
** ON A/C NOT FOR ALL
122VU	AIR COND/TEMP CTL SYS 1/CHAN A/115VAC	49HH	X22
122VU	AIR COND/TEMP CTL SYS 1/CHAN A/28VDC	51HH	X21
122VU	AIR COND/TEMP CTL SYS 1/CHAN B/115VAC	50HH	Y18
** ON A/C NOT FOR ALL
FOR FIN: 11HM2 (CONDENSER)
122VU	AIR COND/PACK TEMP/CTL SYS1/2/115VAC	21HH	W22
122VU	AIR COND/PACK TEMP/CTL SYS1/2/28VDC	23HH	W21
122VU	AIR COND/PACK TEMP CTL SYS2/2/28VDC	24HH	Y21
122VU	AIR COND/PACK TEMP CTL SYS2/2/115VAC	22HH	Y20
** ON A/C NOT FOR ALL
122VU	AIR COND/TEMP CTL SYS 2/CHAN A/115VAC	53HH	W22
122VU	AIR COND/TEMP CTL SYS 2/CHAN A/28VDC	55HH	W21
122VU	AIR COND/TEMP CTL SYS 2/CHAN B/28VDC	56HH	Y21
122VU	AIR COND/TEMP CTL SYS 2/CHAN B/115VAC	54HH	Y20

Subtask 21-52-32-010-050-A

C. Get Access
(1) Remove these access panels from the belly fairing structure (Ref. AMM TASK 53-35-13-000-002):
(a) FOR [10HM2] (CONDENSER)

191KB
191BB.

(b) FOR [11HM2] (CONDENSER)

192KB
192FB.

Subtask 21-52-32-941-050-A

D. Safety Precautions
(1) On panel 30VU:
(a) Make sure that:

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

(b) Put a WARNING NOTICE(S) in position to tell persons not to operate these pushbutton switches.
(2) On the HP ground connector, put the WARNING NOTICE(S) in position to tell persons not to supply the ground air.

4. Procedure
Subtask 21-52-32-020-050-A ** ON A/C NOT FOR ALL

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

A. Removal of the Condenser

Condenser - Component Location ** ON A/C NOT FOR ALL

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(1) Disconnect the electrical connector (27).
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Disconnect the sense lines (3), (8) and (18).
(4) Put the PLUG-BLANKING in each disconnected line end.
(5) Loosen the clamp (24), and disconnect the sleeve (23).
(6) Remove the clamp (21).
(7) Hold the hexagonal part of the retaining cables (11) and remove and discard the nuts (6) and the washers (7).

NOTE: The retaining cables (11) will twist, if you do not hold the hexagonal part of the retaining cables (11).

(8) Disconnect the retaining cables (11).
(9) If necessary, remove and discard the lockwire, and remove the clamp (15).
(10) Remove the half clamps (13), and move the sleeve (14) away from the condenser (22).
(11) Hold the condenser (22):
(a) Remove the nuts (34), washers (33), bolts (29), (if installed, washers (30)) and bushes (31).
(b) Disconnect the support rods (72B) and (73), and remove the condenser (22) from the aircraft.
(12) Remove the screw of the clamp (35), and bend the clamp (35) carefully to remove it.
(13) Remove the sleeves (10) and (14):
(a) Turn the sleeve (10) when you disconnect it.
(14) Remove and discard the seals (9), (16) and (20).
(15) Put the PLUG-BLANKING in each disconnected line end.

Subtask 21-52-32-020-050-B ** ON A/C NOT FOR ALL

A. Removal of the Condenser

Condenser - Component Location ** ON A/C NOT FOR ALL

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(1) Disconnect the electrical connector (25).
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Loosen the clamp (21), and disconnect the sleeve (20).
(4) Remove the clamp (18).
(5) Hold the hexagonal part of the retaining cables (9) and remove and discard the nuts (5) and the washers (6).

NOTE: The retaining cables (9) will twist, if you do not hold the hexagonal part of the retaining cables (9).

(6) Disconnect the retaining cables (9).
(7) If necessary, remove and discard the lockwire, and remove the clamp (13).
(8) Remove the half clamps (11), and move the sleeve (12) away from the condenser (19).
(9) Hold the condensor (19):
(a) Remove the nuts (34), washers (33), bolts (29), (if installed, washers (30)) and bushes (31).
(b) Disconnect the support rods (72B) and (73), and remove the condenser (19) from the aircraft.
(10) Remove the screw of the clamp (35), and bend the clamp carefully to remove it.
(11) Remove the sleeves (8) and (12):
(a) Turn the sleeve (8) when you disconnect it.
(12) Remove and discard the seals (7), (14) and (17).
(13) Put the PLUG-BLANKING in each disconnected line end.

Subtask 21-52-32-020-050-D ** ON A/C NOT FOR ALL

A. Removal of the Condenser

Condenser - Component Location ** ON A/C NOT FOR ALL

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(1) Disconnect the electrical connector (19).
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Loosen the clamp (34), and disconnect the sleeve (33).
(4) Remove the clamp (15).
(5) Remove and discard the nuts (2) and the washers (3), and disconnect the studs (6).
(6) If necessary, remove and discard the lockwire, and remove the clamp (10).
(7) Remove the half clamps (11), and move the sleeve (9) away from the condenser (1).
(8) Hold the condenser (1):
(a) Remove the nut (26), washer (25), bolt (24), (if installed, washer (23)) and bushing (22).
(b) Remove the nut (32), washer (31), bolt (30), (if installed, washer (29)) and bushing (28).
(c) Disconnect the support rods (21) and (27), and remove the condenser (1) from the aircraft.
(9) Remove the sleeves (5) and (9):
(a) Turn the sleeve (5) when you disconnect it.
(10) Remove and discard the seals (4), (8) and (14).
(11) Put the PLUG-BLANKING in each disconnected line end.

Subtask 21-52-32-020-052-A

B. Removal of the Attachment Components

Attachment Components - Condenser

(1) Record the positions of the support rods to use in the Installation procedure.
(2) Remove the nuts (34), washers (33), bolts (29) and (if installed, washers (30)), bushes (31) and support rods (72A), (72B) and (73).
(3) Remove the nut (3), the washer (2), the bolt (4), and disconnect the support rod (72A) from the support rod (72B).
(4) Do the inspection of the components for in-service wear (Ref. AMM TASK 21-52-32-200-001).

[Rev.10 from 2021] 2026.04.02 06:11:30 UTC