Operational Test of the Conditioned Service Air System without Bleed Air

TASK 21-58-00-710-001-A
Operational Test of the Conditioned Service Air System without Bleed Air

ZONE: 210

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

B. Referenced Information

REFERENCE	DESIGNATION
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 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-32-00-860-002-A	Procedure to Get Access to the SYSTEM REPORT/TEST/AIR COND Page
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure

3. Job Set-up
Subtask 21-58-00-861-050-A ** ON A/C NOT FOR ALL

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

Subtask 21-58-00-865-050-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 10HM4 (HEAT EXCHANGER UNIT)
49VU	AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC	52HH	D08
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: 11HM4 (HEAT EXCHANGER UNIT)
121VU	IGGS/CTRL	7YA	N28
** ON A/C NOT FOR ALL
121VU	IGGS/CTRL	7YA	P28
** ON A/C NOT FOR ALL
122VU	CSAS / CTRL	1HW	U17
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 21-58-00-860-050-A ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) Do the EIS start procedure (Ref. AMM TASK 31-60-00-860-001).
(2) On the overhead panel, on ADIRS MSU panel 41VU, set the three OFF/NAV/ATT selector switches to the NAV position.
(3) On the MCDU get the SYSTEM REPORT/TEST/AIR COND Page (Ref. AMM TASK 31-32-00-860-002).

4. Procedure
Subtask 21-58-00-710-050-A ** ON A/C NOT FOR ALL

WARNING: MAKE SURE THAT THERE ARE NO PERSONS OR EQUIPMENT NEAR THE RAM AIR OUTLET FLAPS. MOVEMENT OF THE RAM AIR OUTLET FLAPS AND HOT EXHAUST GASES CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

A. Operational Test of the Conditioned Service Air System without bleed air

ACTION	RESULT
1.On the AIRCOND menu page:	On the MCDU:
push the line key adjacent to the CSAS indication.	the CSAS/IGGS menu page comes on.
2.On the CSAS/IGGS menu page:
push the line key adjacent to the TESTS indication.	the CSAS/IGGS TESTS page comes on.
3.On the CSAS/IGGS TESTS page:
push the line key adjacent to the TEST W/O BLEED indication.	the TEST W/O BLEED page comes on.
4.On the TEST W/O BLEED page:
	the message TEST IN PROGRESS 165 S comes on, then TEST OK (SYSTEM UN-LATCHED) comes on.

5. Close-up
Subtask 21-58-00-860-051-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.
(2) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
(3) On the overhead panel, on ADIRS MSU 41VU:

Set the three OFF/NAV/ATT selector switches to the OFF position.

(4) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.02 06:11:33 UTC