Functional Test of the Rain Repellent System (with the Air Conditioning System)

TASK 30-45-00-720-002-B
Functional Test of the Rain Repellent System (with the Air Conditioning System)

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

WARNING: MAKE SURE THAT THE CIRCUIT BREAKERS RELATED TO THE WEATHER RADAR ARE OPENED, SAFETIED AND TAGGED.

CAUTION: DO NOT APPLY THE RAIN REPELLENT FLUID ON A DRY SURFACE.

CAUTION: REMOVE THE RAIN REPELLENT FLUID FROM THE WINDSHIELD AND FROM ALL THE OTHER SURFACES IT TOUCHES WITH SOAP AND WATER. DO THIS EACH TIME YOU APPLY THE RAIN REPELLENT FLUID.

1. Reason for the Job

NOTE: There is an alternative method for this procedure. This task gives one of the methods. For the other method, refer to the other task in this page block.

NOTE: Two persons are necessary to do this task. One person does the rain repellent test and the other person cleans the windshield with water during the test.

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

REFERENCE	QTY	DESIGNATION
No specific	AR	WARNING NOTICE(S)

B. Referenced Information

REFERENCE	DESIGNATION
TASK 12-33-21-618-001-A	Pre-conditioning through the LP Ground Connection (Aircraft Electrical Power Available)
TASK 12-33-21-618-001-A-01	Pre-conditioning through the HP Ground Connection
TASK 12-33-21-618-001-A-02	Pre-conditioning with the APU
TASK 12-33-21-618-001-A-03	Pre-conditioning through the LP Ground Connection (Aircraft Electrical Power Not Available)
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)

3. Job Set-up
Subtask 30-45-00-861-064-A

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

Subtask 30-45-00-941-077-A

B. Put the WARNING NOTICE(S) in the cockpit to tell persons that the igniters are ON when the "engines running" configuration is simulated.

Subtask 30-45-00-865-086-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	ANTI ICE/RAIN/RPLNT/CAPT	1DB1	D01
122VU	ANTI ICE/RAIN/RPLNT/F/O	1DB2	W11

Subtask 30-45-00-875-053-A ** ON A/C NOT FOR ALL

WARNING: OPEN THE PROBE HEATER CIRCUIT-BREAKERS 3DA1(2,3), 4DA1(2,3) AND 5DA1(2,3) BEFORE YOU OPEN THE CIRCUIT BREAKERS 2KS1 OR 2KS2. IF YOU DO NOT OBEY THIS SEQUENCE:

THIS PROBES WILL BECOME TOO HOT.
THIS CAN CAUSE DAMAGE TO EQUIPMENT AND INJURY TO MAINTENANCE PERSONNEL.

WARNING: MAKE SURE THAT YOU OPEN THE CIRCUIT BREAKERS AS FOLLOWS:

1JH, 2JH1 AND 3JH1 BEFORE 2KS1
1JH, 2JH2 AND 3JH2 BEFORE 2KS2.

IF YOU DO NOT OBEY THIS SEQUENCE, THERE IS A RISK OF ELECTROCUTION. THIS IS BECAUSE YOU WILL START CONTINUOUS IGNITION IF YOU OPEN CIRCUIT BREAKER 2KS1 OR 2KS2 FIRST.

WARNING: BEFORE YOU OPEN PHC CIRCUIT BREAKERS 2DA1(2,3), OPEN PROBE HEATER CIRCUIT-BREAKERS 1DA1(2), 3DA1(2,3), 4DA1(2,3) AND 5DA1(2,3). IF YOU DO NOT OBEY THIS SEQUENCE: - THE PROBES WILL BECOME TOO HOT. - THIS CAN CAUSE DAMAGE TO EQUIPMENT AND INJURY TO MAINTENANCE PERSONNEL.

D. Open, safety and tag these circuit breakers in this sequence:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	ENGINE/1 AND 2/IGN/SYS A	1JH	A03
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
121VU	ENGINE/IGN/ENG1/SYS A BAT	2JH1	P39
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42
121VU	ENGINE/IGN/ENG2/SYS A BAT	2JH2	P40
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R41
121VU	ENGINE/ENG2/FADEC B	4KS2	Q40
122VU	ANTI ICE/PROBES/1/TAT	1DA1	Z12
122VU	ANTI ICE/PROBES/2/TAT	1DA2	Y15
49VU	ANTI ICE/PROBES/PITOT/1	3DA1	D02
122VU	ANTI ICE/PROBES/2/PITOT	3DA2	Y14
122VU	ANTI ICE/PROBES/3/PITOT	3DA3	Z16
49VU	ANTI ICE/PROBES/AOA/1	4DA1	D04
122VU	ANTI ICE/PROBES/2/AOA	4DA2	Y13
122VU	ANTI ICE/PROBES/3/AOA	4DA3	Z15
122VU	ANTI ICE/PROBES/1/STATIC	5DA1	Z13
122VU	ANTI ICE/PROBES/2/STATIC	5DA2	Y11
122VU	ANTI ICE/PROBES/3/STATIC	5DA3	Z14
49VU	ANTI ICE/PROBES/PHC/1	2DA1	D03
122VU	ANTI ICE/PROBES/PHC/2	2DA2	Y12
122VU	ANTI ICE/PROBES/PHC/3	2DA3	Y16
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
49VU	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
122VU	ANTI ICE/WINDOWS/L	4DG1	X14
122VU	ANTI ICE/WINDOWS/R	4DG2	W14
121VU	COM NAV/RADAR/1	5SQ1	K13
** ON A/C NOT FOR ALL
121VU	COM NAV/RADAR/2	5SQ2	K14

Subtask 30-45-00-875-053-B ** ON A/C NOT FOR ALL

WARNING: OPEN THE PROBE HEATER CIRCUIT-BREAKERS 3DA1(2,3), 4DA1(2,3) AND 5DA1(2,3) BEFORE YOU OPEN THE CIRCUIT BREAKERS 2KS1 OR 2KS2. IF YOU DO NOT OBEY THIS SEQUENCE:

THIS PROBES WILL BECOME TOO HOT.
THIS CAN CAUSE DAMAGE TO EQUIPMENT AND INJURY TO MAINTENANCE PERSONNEL.

WARNING: MAKE SURE THAT YOU OPEN THE CIRCUIT BREAKERS AS FOLLOWS:

1JH AND 3JH1 BEFORE 2KS1
1JH AND 3JH2 BEFORE 2KS2.

IF YOU DO NOT OBEY THIS SEQUENCE, THERE IS A RISK OF ELECTROCUTION. THIS IS BECAUSE YOU WILL START CONTINUOUS IGNITION IF YOU OPEN CIRCUIT BREAKER 2KS1 OR 2KS2 FIRST.

D. Open, safety and tag these circuit breakers in this sequence:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	ENGINE/1 AND 2/IGN/SYS A	1JH	A03
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R41
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R40
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	Q40
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	R41
** ON A/C NOT FOR ALL
122VU	ANTI ICE/PROBES/1/TAT	1DA1	Z12
122VU	ANTI ICE/PROBES/2/TAT	1DA2	Y15
49VU	ANTI ICE/PROBES/PITOT/1	3DA1	D02
122VU	ANTI ICE/PROBES/2/PITOT	3DA2	Y14
122VU	ANTI ICE/PROBES/3/PITOT	3DA3	Z16
49VU	ANTI ICE/PROBES/AOA/1	4DA1	D04
122VU	ANTI ICE/PROBES/2/AOA	4DA2	Y13
122VU	ANTI ICE/PROBES/3/AOA	4DA3	Z15
122VU	ANTI ICE/PROBES/1/STATIC	5DA1	Z13
122VU	ANTI ICE/PROBES/2/STATIC	5DA2	Y11
122VU	ANTI ICE/PROBES/3/STATIC	5DA3	Z14
49VU	ANTI ICE/PROBES/PHC/1	2DA1	D03
122VU	ANTI ICE/PROBES/PHC/2	2DA2	Y12
122VU	ANTI ICE/PROBES/PHC/3	2DA3	Y16
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
49VU	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
122VU	ANTI ICE/WINDOWS/L	4DG1	X14
122VU	ANTI ICE/WINDOWS/R	4DG2	W14
121VU	COM NAV/RADAR/1	5SQ1	K13

Subtask 30-45-00-618-050-A

E. Pressurization of the Rain Repellent System with the Air Conditioning System
(1) Do the pre-conditioning (Ref. AMM TASK 12-33-21-618-001).
(2) In the cockpit, on AIR COND panel 30VU:
(a) Push the PACK 1(2) pushbutton switch to supply air in the rain repellent system.

4. Procedure
Subtask 30-45-00-720-055-A

A. Functional Test of the Rain Repellent System
(1) Do a check of the CAPT and the F/O nozzles to make sure that:

The compressed air goes out through the CAPT and the F/O nozzles:

ACTION	RESULT
1.On the WIPER section of panel 21VU (22VU): Push and release the CAPT (F/O) RAIN RPLNT pushbutton switch.	Make sure that the rain repellent fluid flows through the CAPT (F/O) nozzle (between 0.1 and 1 second).
2.Open circuit breaker 1DB1 (1DB2).
3.On the WIPER section of panel 21VU (22VU): Push and release the CAPT (F/O) RAIN RPLNT pushbutton switch.	Make sure that the rain repellent fluid does not flow through the nozzles.
4.Close circuit breaker 1DB1 (1DB2).
5.On the WIPER section of panel 21VU (22VU): Push and release the CAPT (F/O) RAIN RPLNT pushbutton switch.	Make sure that the rain repellent fluid flows through the CAPT (F/O) nozzle (between 0.1 and 1 second). Make sure that the compressed air removes the remaining fluid from the system. Make sure that the compressed air goes out through the CAPT and the F/O nozzles.
6.Close circuit breakers 2KS1, 2KS2, 4KS1 and 4KS2.
7.On the WIPER section of panel 21VU (22VU): Push and release the CAPT (F/O) RAIN RPLNT pushbutton switch.	The rain repellent fluid does not flow through the nozzles. Only the compressed air goes out through the CAPT and the F/O nozzles.

(2) Clean the windshield with water to remove the remaining rain repellent fluid.
(3) After you complete the functional test of the rain repellent system, make sure that:

The area around the windshield is clear.
The windshield is clean and clear of all items.

5. Close-up
Subtask 30-45-00-618-051-A

A. Stop the Pressurization with the Air Conditioning System
(1) In the cockpit, on AIR COND panel 30VU:
(a) Push the PACK 1(2) pushbutton switch to stop the air supply in the rain repellent system.
(2) Stop the pre-conditioning (Ref. AMM TASK 12-33-21-618-001).

Subtask 30-45-00-865-087-A

WARNING: CLOSE THE CIRCUIT-BREAKER 2KS1 OR 2KS2 BEFORE YOU CLOSE THE PROBE HEATER CIRCUIT-BREAKERS 3DA1(2,3), 4DA1(2,3) AND 5DA1(2,3). IF YOU DO NOT OBEY THIS SEQUENCE:

THIS PROBES WILL BECOME TOO HOT.
THIS CAN CAUSE DAMAGE TO EQUIPMENT AND INJURY TO MAINTENANCE PERSONNEL.

B. Remove the safety clips and tags and close these circuit breakers in this sequence:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	COM NAV/RADAR/2	5SQ2	K14
** ON A/C ALL
121VU	COM NAV/RADAR/1	5SQ1	K13
122VU	ANTI ICE/WINDOWS/R	4DG2	W14
122VU	ANTI ICE/WINDOWS/L	4DG1	X14
122VU	ANTI ICE/PROBES/PHC/3	2DA3	Y16
122VU	ANTI ICE/PROBES/PHC/2	2DA2	Y12
49VU	ANTI ICE/PROBES/PHC/1	2DA1	D03
122VU	ANTI ICE/PROBES/3/STATIC	5DA3	Z14
122VU	ANTI ICE/PROBES/2/STATIC	5DA2	Y11
122VU	ANTI ICE/PROBES/1/STATIC	5DA1	Z13
122VU	ANTI ICE/PROBES/3/AOA	4DA3	Z15
122VU	ANTI ICE/PROBES/2/AOA	4DA2	Y13
49VU	ANTI ICE/PROBES/AOA/1	4DA1	D04
122VU	ANTI ICE/PROBES/3/PITOT	3DA3	Z16
122VU	ANTI ICE/PROBES/2/PITOT	3DA2	Y14
49VU	ANTI ICE/PROBES/PITOT/1	3DA1	D02
122VU	ANTI ICE/PROBES/2/TAT	1DA2	Y15
122VU	ANTI ICE/PROBES/1/TAT	1DA1	Z12
** ON A/C NOT FOR ALL
121VU	ENGINE/IGN/ENG2/SYS A BAT	2JH2	P40
** ON A/C ALL
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42
** ON A/C NOT FOR ALL
121VU	ENGINE/IGN/ENG1/SYS A BAT	2JH1	P39
** ON A/C ALL
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
49VU	ENGINE/1 AND 2/IGN/SYS A	1JH	A03

Subtask 30-45-00-862-063-A

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

[Rev.10 from 2021] 2026.04.01 00:31:15 UTC