Check of the Operation of the Probe Heating Channel

TASK 30-31-00-040-001-A
Check of the Operation of the Probe Heating Channel

WARNING: DO NOT TOUCH THE PROBES IMMEDIATELY AFTER THE TEST. THEY ARE HOT AND CAN BURN YOU.

CAUTION: REMOVE THE PROTECTIVE COVERS FROM THE PROBES BEFORE YOU DO THE TEST.

CAUTION: DO NOT CONTINUE THE TEST FOR MORE THAN ONE MINUTE TO PREVENT DAMAGE TO THE PROBES.

FIN: 6DA1
FIN: 6DA2
FIN: 6DA3

1. Reason for the Job
MMEL 30-31-01A
PROBE HEAT COMPUTER (PHC)
Check of the associated heating channel.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 3M (10 FT)
No specific	AR	THERMOMETER
No specific	AR	WARNING NOTICE(S)

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

3. Job Set-up
Subtask 30-31-00-941-052-A

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Put an ACCESS PLATFORM 3M (10 FT) in position near each probe.
(3) On the panel 25VU:

make sure that the PROBE/WINDOW HEAT pushbutton switch is released (the ON legend is off).

(4) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).

4. Procedure

WARNING: DO NOT TOUCH THE PROBES IMMEDIATELY AFTER THE TEST. THEY ARE HOT AND CAN BURN YOU.

Subtask 30-31-00-860-072-A

A. Aircraft Maintenance Configuration
(1) On the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons that a flight configuration will be simulated.

Subtask 30-31-00-865-058-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
49VU	FWS/FWC1/SPLY	3WW	F01
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34
121VU	EIS/FWC2/SPLY	2WW	Q07
FOR FIN: 6DA1 (PHC1)
49VU	ANTI ICE/PROBES/AOA/1	4DA1	D04
49VU	ANTI ICE/PROBES/PHC/1	2DA1	D03
49VU	ANTI ICE/PROBES/PITOT/1	3DA1	D02
122VU	ANTI ICE/PROBES/1/STATIC	5DA1	Z13
122VU	ANTI ICE/PROBES/1/TAT	1DA1	Z12
FOR FIN: 6DA2 (PHC2)
122VU	ANTI ICE/PROBES/2/TAT	1DA2	Y15
122VU	ANTI ICE/PROBES/2/PITOT	3DA2	Y14
122VU	ANTI ICE/PROBES/2/AOA	4DA2	Y13
122VU	ANTI ICE/PROBES/PHC/2	2DA2	Y12
122VU	ANTI ICE/PROBES/2/STATIC	5DA2	Y11
FOR FIN: 6DA3 (PHC3)
122VU	ANTI ICE/PROBES/PHC/3	2DA3	Y16
122VU	ANTI ICE/PROBES/3/PITOT	3DA3	Z16
122VU	ANTI ICE/PROBES/3/AOA	4DA3	Z15
122VU	ANTI ICE/PROBES/3/STATIC	5DA3	Z14

Subtask 30-31-00-040-050-A

CAUTION: DO NOT CONTINUE THE TEST FOR MORE THAN ONE MINUTE TO PREVENT DAMAGE TO THE PROBES.

C. Check of the Probe Heating

ACTION	RESULT
1.On the overhead circuit-breaker panel 49VU: Open the circuit breaker 1GA. On the rear circuit-breaker panel 121VU: Open the circuit breaker 52GA Open the circuit breaker 2GA.	On the lower ECAM DU: The TAT temperature increases. On the upper ECAM DU: Make sure that no warning message related to the probes comes into view. NOTE: Ignore the aural warning message.
2.On the panel 49VU: Close the circuit breaker 1GA. On the panel 121VU: Close the circuit breaker 52GA Close the circuit breaker 2GA.	On the lower ECAM DU: The TAT temperature decreases.
3.Make sure that the heating of the probes related to the unserviceable PHC, is in operation. For 6DA1 PHC-1 - 7DA1, 8DA1, 9DA1, 3FP1, 11FP1 For 6DA2 PHC-2 - 7DA2, 8DA2, 9DA2, 3FP2, 11FP2 For 6DA3 PHC-3 - 7DA3, 8DA3, 9DA3, 3FP3. NOTE: You can use a THERMOMETER which can read up to 400 deg.C (752.00 deg.F) to do this check.	On the upper ECAM DU: make sure that no warning message related to the probes comes into view. Make sure that the related probes are hot.
On the lower ECAM DU: Make sure that no status message comes into view.	On the lower ECAM DU, if the AC GEN indication comes into view: It goes out at the next IDG connection.
	On the lower ECAM DU, if the AIR BLEED indication comes into view: Do the step that follows.
On the panel 49VU: Open and close the circuit breaker 3WW. On the panel 121VU: Open and close the circuit breaker 2WW.	On the lower ECAM DU: The AIR BLEED indication goes out of view.

5. Close-up
Subtask 30-31-00-860-063-A

A. Put the aircraft back to its initial configuration.
(1) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(3) Make an entry in the logbook.
(4) Remove the warning notice(s).

[Rev.10 from 2021] 2026.04.01 00:30:41 UTC