Functional Check of the Pressure Regulating Valve (PRV) Control-Solenoid (10HA1, 10HA2) Non-Return-Function with the Engine Running

TASK 36-11-00-720-819-A-02
Functional Check of the Pressure Regulating Valve (PRV) Control-Solenoid (10HA1, 10HA2) Non-Return-Function with the Engine Running

WARNING: MAKE SURE THAT WHEN THE ENGINES OPERATE ON THE GROUND:

NO PERSONS GO WHERE THE AIRCRAFT CAN CAUSE THEM INJURY OR CAN KILL THEM
NO OBJECTS STAY WHERE THE ENGINES CAN BLOW THEM AWAY OR WHERE THEY CAN BE PULLED INTO THE ENGINES BY SUCTION.

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

REFERENCE	QTY	DESIGNATION
98F10103500000	AR	CHOCK-MLG,ENGINE RUN-UP

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 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 71-00-00-710-003-A	Engine Automatic Start
TASK 71-00-00-710-003-B	Engine Automatic Start
TASK 71-00-00-710-004-A	Engine Manual Start
TASK 71-00-00-710-004-B	Engine Manual Start
TASK 71-00-00-710-018-A	Discontinued Start, Restart and Shutdown Procedures
TASK 71-00-00-710-028-A	Engine Shutdown
TASK 71-00-00-710-028-B	Engine Shutdown
TASK 71-00-00-710-043-A	Normal Engine Automatic-Start Procedure
TASK 71-00-00-710-047-A	Normal Engine Manual-Start Procedure
TASK 71-00-00-860-012-A	Engine Safety Precautions
TASK 71-00-00-869-004-A	Safety Precautions During Engine Ground Operations
TASK 71-00-00-869-006-A	Safety Precautions During Engine Ground Operations
Tool Installation
BLEED Page

3. Job Set-up
Subtask 36-11-00-941-178-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Obey the safety precautions during engine ground operations (Ref. AMM TASK 71-00-00-869-006).
(2)

Tool Installation ** ON A/C NOT FOR ALL

Subtask 36-11-00-941-178-B ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Obey the safety precautions during engine ground operations (Ref. AMM TASK 71-00-00-860-012).
(2)

Tool Installation ** ON A/C NOT FOR ALL

Subtask 36-11-00-941-178-D ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Obey the safety precautions during engine ground operations (Ref. AMM TASK 71-00-00-869-004).
(2)

Tool Installation ** ON A/C NOT FOR ALL

Subtask 36-11-00-865-195-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: 1000EM1 (ENGINE1)
49VU	AIR BLEED/ENG 1/CTL	3HA1	D12
49VU	AIR BLEED/ENG 1/MONG	2HA1	D11
122VU	AIR BLEED/X FEED VALVE/NORM	1HV	Z20
FOR FIN: 1000EM2 (ENGINE2)
49VU	AIR BLEED/X FEED/VALVE/BAT	2HV	D13
122VU	AIR BLEED/ENG 2/CTL	3HA2	Z23
122VU	AIR BLEED/ENG 2/MONG	2HA2	Z22

Subtask 36-11-00-860-218-A ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(3) In the cockpit, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch is in the OFF position.
(4) In the cockpit, on AIR COND panel 30VU:
(a) Make sure that the ENG 1 and 2 BLEED pushbutton switches are released (the OFF legends are on).
(b) Make sure that the APU BLEED pushbutton switch is pushed (the ON legend is on).
(c) Make sure that the X BLEED selector switch is in the OPEN position.
(d) Make sure that the PACK 1 and 2 pushbutton switches are released (the OFF legends are on).
(e) Make sure that the PACK FLOW selector switch is in the LO position.
(5) Start engines 1 and 2 (Ref. AMM TASK 71-00-00-710-003) or (Ref. AMM TASK 71-00-00-710-004).
(6) Let the engine become stable at the minimum idle speed for 5 minutes.

Subtask 36-11-00-860-218-D ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(3) In the cockpit, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch is in the OFF position.
(4) In the cockpit, on AIR COND panel 30VU:
(a) Make sure that the ENG 1 and 2 BLEED pushbutton switches are released (the OFF legends are on).
(b) Make sure that the APU BLEED pushbutton switch is pushed (the ON legend is on).
(c) Make sure that the X BLEED selector switch is set to the OPEN position.
(d) Make sure that the PACK 1 and 2 pushbutton switches are released (the OFF legends are on).
(e) Make sure that the PACK FLOW selector switch is in the LO position.
(5) Start engines 1 and 2 (Ref. AMM TASK 71-00-00-710-003) or (Ref. AMM TASK 71-00-00-710-004).
(6) Let the engine become stable at the minimum idle speed for 5 minutes.

Subtask 36-11-00-860-218-E ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(3) In the cockpit, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1 and 2 control switches are in the OFF position.
(4) In the cockpit, on AIR COND panel 30VU:
(a) Make sure that the ENG 1 and 2 BLEED pushbutton switches are released (the OFF legends are on).
(b) Make sure that the APU BLEED pushbutton switch is pushed (the ON legend is on).
(c) Make sure that the X BLEED selector switch is in the OPEN position.
(d) Make sure that the PACK 1 and 2 pushbutton switches are released (the OFF legends are on).
(e) Make sure that the ECON FLOW pushbutton switch is in the ON position.
(5) Start engines 1 and 2 (Ref. AMM TASK 71-00-00-710-043) or (Ref. AMM TASK 71-00-00-710-047).
(6) Let the engine become stable at the minimum idle speed for 5 minutes.

Subtask 36-11-00-860-218-F ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(3) In the cockpit, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1 and 2 control switches are in the OFF position.
(4) In the cockpit, on AIR COND panel 30VU:
(a) Make sure that the ENG 1 and 2 BLEED pushbutton switches are released (the OFF legends are on).
(b) Make sure that the APU BLEED pushbutton switch is pushed (the ON legend is on).
(c) Make sure that the X BLEED selector switch is set to the OPEN position.
(d) Make sure that the PACK 1 and 2 pushbutton switches are released (the OFF legends are on).
(e) Make sure that the ECON FLOW pushbutton switch is in the ON position.
(5) Start engines 1 and 2 (Ref. AMM TASK 71-00-00-710-003) or (Ref. AMM TASK 71-00-00-710-004).
(6) Let the engine become stable at the minimum idle speed for 5 minutes.

4. Procedure
Subtask 36-11-00-720-119-A ** ON A/C NOT FOR ALL

A. Functional Check of the PRV Control-Solenoid (10HA1) Non-Return-Function

BLEED Page ** ON A/C NOT FOR ALL

ACTION	RESULT
1.In the cockpit, on AIR COND panel 30VU: Push the ENG 1 BLEED and ENG 2 BLEED pushbutton-switches (the OFF legends are off). Set the PACK 1 and PACK 2 to ON, in the normal mode (NORM). NOTE: If there is a problem with the opposite flow protection, you can set the PACK 1(2) switch to OFF.	On the SD: The BLEED page comes into view The BLEED page shows the PRVs (4001HA1, 4001HA2) are in the open position.
2.To do the test of the PRV control-solenoid (10HA1) non-return-function: Slowly push the ENGINE-2 thrust lever to around 30% N1.	On the SD: The PRV (4001HA2) is in the open position. Do a check for the position of the PRV (4001HA1): Check that the PRV (4001HA1) closes and stays in the closed position. Record the engine rating and the bleed pressure value then go to the step 3. If the PRV (4001HA1) stays in the open position: Slowly pull the ENGINE-2 thrust lever rearward to the idle position. Set the PACK 1(2) to the released position (the OFF legend is on). Slowly push the ENGINE-2 thrust lever until the thrust is 30% N1. Monitor the status of the PRV (4001HA1). If the PRV (4001HA1) continues to stay in the open position, it is because of a defective PRV control solenoid. In such conditions, do the steps carefully to make sure that the procedure is followed correctly. Make sure that: GEN 2 frequency stays at 400 Hz ± 5Hz. IDG 2 output temperature stays below 130 DEG.C (266 DEG.F).
3.Slowly pull the ENGINE-2 thrust lever rearward to the idle position.	On the SD: The PRV (4001HA1) and the HPV (4000HA1) comes back to the open position. NOTE: For a reopening of the PRV, it can be necessary to: Close the X bleed valve Increase the thrust of engine 1 until 30% N1 in small increments. NOTE: This test covers the reverse flow protection test at ENGINE 1.
	On the ECAM display: No warnings and messages are displayed.

Subtask 36-11-00-720-113-A ** ON A/C NOT FOR ALL

B. Functional Check of the PRV Control-Solenoid (10HA2) Non-Return-Function

BLEED Page ** ON A/C NOT FOR ALL

ACTION	RESULT
1. In the cockpit, on AIR COND panel 30VU: Push the ENG 1 BLEED and ENG 2 BLEED pushbutton-switches (the OFF legends are off). Set the PACK 1 and PACK 2 to ON, in the normal mode (NORM). NOTE: If there is a problem with the opposite flow protection, you can set the PACK 1(2) switch to OFF.	On the SD: The BLEED page comes into view The BLEED page shows the PRVs (4001HA1, 4001HA2) are in the open position.
2. To do the test of the PRV control-solenoid (10HA2) non-return-function: Slowly push the ENGINE-1 thrust lever to around 30% N1.	On the SD: The PRV (4001HA1) is in the open position. Do a check for the position of the PRV (4001HA2): Check that the PRV (4001HA2) closes and stays in the closed position. Record the engine rating and the bleed pressure value then go to the step 3. If the PRV (4001HA2) stays in the open position: Slowly pull the ENGINE-1 thrust lever rearward to the idle position. Set the PACK 1(2) to the released position (the OFF legend is on). Slowly push the ENGINE-1 thrust lever until the thrust is 30% N1. Monitor the status of the PRV (4001HA2). If the PRV (4001HA2) continues to stay in the open position, it is because of a defective PRV control solenoid. In such conditions, do the steps carefully to make sure that the procedure is followed correctly. Make sure that: GEN 1 frequency stays at 400 Hz ± 5Hz. IDG 1 output temperature stays below 130 DEG.C (266 DEG.F).
3.Slowly pull the ENGINE-1 thrust lever rearward to the idle position.	On the SD: The PRV (4001HA2) and the HPV (4000HA2) comes back to the open position. NOTE: For a reopening of the PRV, it might be necessary to: Close the X bleed valve Increase the thrust of engine 2 until 30% N1 in small increments. NOTE: This test covers the reverse flow protection test at ENGINE 2.
	On the ECAM display: No warnings and messages are displayed.

5. Close-up
Subtask 36-11-00-860-219-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Stop engines 1 and 2 (Ref. AMM TASK 71-00-00-710-028).
(2) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(3) On the ECAM control panel, set the UPPER DISPLAY and LOWER DISPLAY potentiometers to OFF.
(4) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(5) Remove the 98F10103500000 CHOCK-MLG,ENGINE RUN-UP.

Subtask 36-11-00-860-219-B ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Stop engines 1 and 2 (Ref. AMM TASK 71-00-00-710-018).
(2) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(3) On the ECAM control panel, set the UPPER DISPLAY and LOWER DISPLAY potentiometers to OFF.
(4) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(5) Remove the 98F10103500000 CHOCK-MLG,ENGINE RUN-UP.

Subtask 36-11-00-860-219-D ** ON A/C NOT FOR ALL

[Rev.10 from 2021] 2026.04.01 01:07:24 UTC