LEAK DETECTION - DESCRIPTION AND OPERATION
__________________________________________
1. General
_______
REV. DATE : 01-Aug-2011
R
**ON A/C 001-099, 201-249, 251-299, 401-499,
(Ref. Fig. 001)
**ON A/C 101-199,
(Ref. Fig. 001A)
**ON A/C ALL
This continuous monitoring system is designed to detect, by means of
detection loops, any ambient overheat. This is to protect the structures and
components near the hot air ducts in the fuselage, pylons and wings, against
possible leaks or bursts.
2. Component
__________________
Location
(Ref. Fig. 002)
R
**ON A/C 001-099, 201-220, 251-299,
(Ref. Fig. 003)
**ON A/C 101-199,
(Ref. Fig. 003A)
R
**ON A/C 221-249,
(Ref. Fig. 003B)
**ON A/C 401-499,
(Ref. Fig. 003C)
EFF :
ALL
36-22-00
BAW
Page 1
May 01/09
REV. DATE : 01-Aug-2011
Leak Detection Loops - General Schematic
Figure 001
R
EFF :
001-099, 201-249, 251-299, 401-499,
36-22-00
BAW
Page 2
May 01/09
REV. DATE : 01-Aug-2011
Leak Detection Loops - General Schematic
Figure 001A
EFF :
101-199,
36-22-00
BAW
Page 3/4
May 01/08
REV. DATE : 01-Aug-2011
Sensing Element Typical
Figure 002
EFF :
ALL
36-22-00
BAW
Page 5
May 01/08
REV. DATE : 01-Aug-2011
Component Location
Figure 003 (SHEET 1)
R
EFF :
001-099, 201-220, 251-299,
36-22-00
BAW
Page 6
May 01/09
REV. DATE : 01-Aug-2011
Component Location
Figure 003 (SHEET 2)
R
EFF :
001-099, 201-220, 251-299,
36-22-00
BAW
Page 7
May 01/09
REV. DATE : 01-Aug-2011
INTENTIONALLY BLANK
36-22-00
BAW
Page 8
May 01/08
REV. DATE : 01-Aug-2011
Component Location
Figure 003A
EFF :
101-199,
36-22-00
BAW
Page 9/10
May 01/08
REV. DATE : 01-Aug-2011
INTENTIONALLY BLANK
R
36-22-00
BAW
Page 11
May 01/08
REV. DATE : 01-Aug-2011
Component Location
Figure 003B (SHEET 1)
R
EFF :
221-249,
36-22-00
BAW
Page 12
May 01/09
REV. DATE : 01-Aug-2011
Component Location
Figure 003B (SHEET 2)
R
EFF :
221-249,
36-22-00
BAW
Page 13
May 01/09
REV. DATE : 01-Aug-2011
Component Location
Figure 003B (SHEET 3)
R
EFF :
221-249,
36-22-00
BAW
Page 14
May 01/09
REV. DATE : 01-Aug-2011
INTENTIONALLY BLANK
R
36-22-00
BAW
Page 15
Nov 01/08
REV. DATE : 01-Aug-2011
R
R
Component Location
Figure 003C (SHEET 1)
R
EFF :
401-499,
36-22-00
BAW
Page 16
Nov 01/08
REV. DATE : 01-Aug-2011
R
R
Component Location
Figure 003C (SHEET 2)
R
EFF :
401-499,
36-22-00
BAW
Page 17
Nov 01/08
**ON A/C ALL
A. Wing Section
REV. DATE : 01-Aug-2011
R
**ON A/C 001-099, 201-220, 251-299,
(Ref. Fig. 003)
**ON A/C 101-199,
(Ref. Fig. 003A)
R
**ON A/C 221-249,
(Ref. Fig. 003B)
**ON A/C 401-499,
(Ref. Fig. 003C)
**ON A/C ALL
(Ref. Fig. 004)
------------------------------------------------------------------------------FIN
|
FUNCTIONAL DESIGNATION
| PANEL|ZONE|ACCESS |
ATA
|
|
|
| DOOR |
REF.
------------------------------------------------------------------------------21HF
CABLE-CONNECTING, L WING LOOP A
521 521EB
36-22-16
22HF
SNSG ELEM-OVHT, L WING LOOP A
521 521EB
36-22-16
23HF
SNSG ELEM-OVHT, L WING LOOP A
522 521AT
36-22-16
24HF
CABLE-CONNECTING, L WING LOOP A
522 521AT
36-22-16
25HF
CABLE-CONNECTING, L WING LOOP A
522 522AB
36-22-16
26HF
SNSG ELEM-OVHT, L WING LOOP A
522 522AB
36-22-16
27HF
SNSG ELEM-OVHT, L WING LOOP A
522 521AT
36-22-16
28HF
SNSG ELEM-OVHT, L WING LOOP A
521 521EB
36-22-16
29HF
SNSG ELEM-OVHT, L WING LOOP A
521 521EB
36-22-16
49HF
SNSG ELEM-OVHT, L WING LOOP B
521 521EB
36-22-16
50HF
SNSG ELEM-OVHT, L WING LOOP B
522 521AT
36-22-16
51HF
CABLE-CONNECTING, L WING LOOP B
522 521AT
36-22-16
52HF
CABLE-CONNECTING, L WING LOOP B
522 522AB
36-22-16
EFF :
ALL
36-22-00
BAW
Page 18
May 01/09
REV. DATE : 01-Aug-2011
Component Location - Wing
Figure 004
R
EFF :
ALL
36-22-00
BAW
Page 19
Nov 01/08
REV. DATE : 01-Aug-2011
------------------------------------------------------------------------------FIN
|
FUNCTIONAL DESIGNATION
| PANEL|ZONE|ACCESS |
ATA
|
|
|
| DOOR |
REF.
------------------------------------------------------------------------------53HF
SNSG ELEM-OVHT, L WING LOOP B
522 522AB
36-22-16
54HF
SNSG ELEM-OVHT, L WING LOOP B
522 521AT
36-22-16
55HF
SNSG ELEM-OVHT, L WING LOOP B
521 521EB
36-22-16
56HF
SNSG ELEM-OVHT, L WING LOOP B
521 521AB
36-22-16
77HF
CABLE-CONNECTING, L WING LOOP B
521 521AB
36-22-16
37HF
CABLE-CONNECTING, R WING LOOP A
621 621EB
36-22-16
38HF
SNSG ELEM-OVHT, R WING LOOP A
621 621EB
36-22-16
39HF
SNSG ELEM-OVHT, R WING LOOP A
622 621AT
36-22-16
40HF
CABLE-CONNECTING, R WING LOOP A
622 621AT
36-22-16
41HF
CABLE-CONNECTING, R WING LOOP A
622 622AB
36-22-16
42HF
SNSG ELEM-OVHT, R WING LOOP A
622 622AB
36-22-16
43HF
SNSG ELEM-OVHT, R WING LOOP A
622 621AT
36-22-16
44HF
SNSG ELEM-OVHT, R WING LOOP A
621 621EB
36-22-16
45HF
SNSG ELEM-OVHT, R WING LOOP A
621 621AB
36-22-16
64HF
CABLE-CONNECTING, R WING LOOP B
621 621EB
36-22-16
65HF
SNSG ELEM-OVHT, R WING LOOP B
621 621EB
36-22-16
66HF
SNSG ELEM-OVHT, R WING LOOP B
622 621AT
36-22-16
67HF
CABLE-CONNECTING, R WING LOOP B
622 621AT
36-22-16
68HF
CABLE-CONNECTING, R WING LOOP B
622 622AB
36-22-16
69HF
SNSG ELEM-OVHT, R WING LOOP B
622 622AB
36-22-16
70HF
SNSG ELEM-OVHT, R WING LOOP B
622 621AT
36-22-16
71HF
SNSG ELEM-OVHT, R WING LOOP B
621 621EB
36-22-16
72HF
SNSG ELEM-OVHT, R WING LOOP B
621 621AB
36-22-16
80HF
SNSG ELEM-OVHT, R WING LOOP A
621 621AT
36-22-16
81HF
SNSG ELEM-OVHT, L WING LOOP A
521 521AT
36-22-16
82HF
SNSG ELEM-OVHT, R WING LOOP B
621 621AT
36-22-16
83HF
SNSG ELEM-OVHT, L WING LOOP B
521 521AT
36-22-16
R
**ON A/C 001-099, 101-199, 201-220, 251-299,
B. MID Fuselage Section
R
**ON A/C 001-099, 201-220, 251-299,
(Ref. Fig. 003)
**ON A/C 101-199,
(Ref. Fig. 003A)
EFF :
ALL
36-22-00
BAW
Page 20
May 01/09
**ON A/C 001-099,
(Ref. Fig. 005)
REV. DATE : 01-Aug-2011
R
**ON A/C 101-199, 201-220, 251-299,
(Ref. Fig. 005A)
R
**ON A/C 001-099, 101-199, 201-220, 251-299,
------------------------------------------------------------------------------FIN
|
FUNCTIONAL DESIGNATION
| PANEL|ZONE|ACCESS |
ATA
|
|
|
| DOOR |
REF.
------------------------------------------------------------------------------30HF
CABLE ASSY
150
36-22-18
31HF
OVHT SENS ELEMENT
140
36-22-18
32HF
OVERHEAT SENSING ELEM
140
36-22-18
33HF
OVHT SENS ELEMENT
140
36-22-18
34HF
OVHT SENS ELEMENT
140 147FB
36-22-18
35HF
OVHT SENS ELEMENT
140 147FB
36-22-18
36HF
OVHT SENS ELEMENT
140 147FB
36-22-18
47HF
ELEMENT-OVERHEAT SENSING
140
36-22-18
48HF
CABLE ASSY
190 192EB
36-22-00
57HF
CABLE ASSY
150
36-22-18
58HF
OVHT SENS ELEMENT
140
36-22-18
59HF
OVERHEAT SENSING ELEM
140
36-22-18
60HF
OVHT SENS ELEMENT
140
36-22-18
61HF
OVHT SENS ELEMENT
140 147FB
36-22-18
62HF
OVHT SENS ELEMENT
140
36-22-18
63HF
OVHT SENS ELEMENT
140
36-22-18
73HF
OVHT SENS ELEMENT
140 191EB
36-22-18
74HF
OVHT SENS ELEMENT
140 192EB
36-22-18
75HF
OVHT SENS ELEMENT
140
36-22-18
76HF
CABLE ASSY
190 192EB
36-22-00
78HF
OVHT SENS ELEMENT
140
36-22-18
79HF
OVHT SENS ELEMENT
140 192EB
36-22-18
R
EFF :
001-099, 101-199, 201-220, 251-299,
36-22-00
BAW
Page 21
May 01/09
REV. DATE : 01-Aug-2011
Component Location - Lower MID Fuselage
Figure 005
R
EFF :
001-099, 401-499,
36-22-00
BAW
Page 22
Nov 01/08
REV. DATE : 01-Aug-2011
Component Location - Lower MID Fuselage
Figure 005A
R
EFF :
101-199, 201-249, 251-299,
36-22-00
BAW
Page 23
May 01/09
R
**ON A/C 221-249, 401-499,
B. MID Fuselage Section
REV. DATE : 01-Aug-2011
R
**ON A/C 221-249,
(Ref. Fig. 003B)
**ON A/C 401-499,
(Ref. Fig. 003C, 005)
R
**ON A/C 221-249,
(Ref. Fig. 005A)
R
**ON A/C 221-249, 401-499,
------------------------------------------------------------------------------FIN
|
FUNCTIONAL DESIGNATION
| PANEL|ZONE|ACCESS |
ATA
|
|
|
| DOOR |
REF.
------------------------------------------------------------------------------30HF
CABLE ASSY
150
36-22-18
31HF
OVHT SENS ELEMENT
140
36-22-18
32HF
OVERHEAT SENSING ELEM
140
36-22-18
33HF
OVHT SENS ELEMENT
140
36-22-18
34HF
OVHT SENS ELEMENT
140 147FB
36-22-18
35HF
OVHT SENS ELEMENT
140 147FB
36-22-18
36HF
OVHT SENS ELEMENT
140 147FB
36-22-18
47HF
ELEMENT-OVERHEAT SENSING
140
36-22-18
48HF
CABLE ASSY
190 192EB
36-22-00
57HF
CABLE ASSY
150
36-22-18
58HF
OVHT SENS ELEMENT
140
36-22-18
59HF
OVERHEAT SENSING ELEM
140
36-22-18
60HF
OVHT SENS ELEMENT
140
36-22-18
61HF
OVHT SENS ELEMENT
140 147FB
36-22-18
62HF
OVHT SENS ELEMENT
140
36-22-18
63HF
OVHT SENS ELEMENT
140
36-22-18
73HF
OVHT SENS ELEMENT
140 191EB
36-22-18
74HF
OVHT SENS ELEMENT
140 192EB
36-22-18
75HF
OVHT SENS ELEMENT
140
36-22-18
76HF
CABLE ASSY
190 192EB
36-22-00
R
EFF :
221-249, 401-499,
36-22-00
BAW
Page 24
May 01/09
REV. DATE : 01-Aug-2011
------------------------------------------------------------------------------FIN
|
FUNCTIONAL DESIGNATION
| PANEL|ZONE|ACCESS |
ATA
|
|
|
| DOOR |
REF.
------------------------------------------------------------------------------78HF
OVHT SENS ELEMENT
140
36-22-18
79HF
OVHT SENS ELEMENT
140 192EB
36-22-18
90HF
INTERCONNECTING CABLE
140
36-22-00
91HF
INTERCONNECTING CABLE
140
36-22-00
92HF
INTERCONNECTING CABLE
140
36-22-00
93HF
INTERCONNECTING CABLE
140
36-22-00
R
**ON A/C 001-099, 201-249, 251-299,
C. MID and AFT Fuselage Section
R
**ON A/C 001-099, 201-220, 251-299,
(Ref. Fig. 003)
R
**ON A/C 221-249,
(Ref. Fig. 003B)
**ON A/C 001-099,
(Ref. Fig. 006)
R
**ON A/C 201-249, 251-299,
(Ref. Fig. 006B)
R
EFF :
001-099, 201-249, 251-299, 401-499,
36-22-00
BAW
Page 25
May 01/09
REV. DATE : 01-Aug-2011
Component Location - Lower MID and AFT Fuselage
Figure 006
R
EFF :
001-099,
36-22-00
BAW
Page 26
Nov 01/08
REV. DATE : 01-Aug-2011
Component Location - Lower MID and AFT Fuselage
Figure 006A
R
EFF :
101-199,
36-22-00
BAW
Page 27
Nov 01/08
REV. DATE : 01-Aug-2011
Component Location - Lower MID and AFT Fuselage
Figure 006B
R
EFF :
201-249, 251-299,
36-22-00
BAW
Page 28
May 01/09
REV. DATE : 01-Aug-2011
R
**ON A/C 001-099, 201-249, 251-299,
------------------------------------------------------------------------------FIN
|
FUNCTIONAL DESIGNATION
| PANEL|ZONE|ACCESS |
ATA
|
|
|
| DOOR |
REF.
------------------------------------------------------------------------------11HF
CONNECTING CABLE
151
36-22-17
12HF
OVHT SENS ELEMENT
151
36-22-17
13HF
OVHT SENS ELEMENT
151
36-22-17
14HF
OVHT SENS ELEMENT
151
36-22-17
15HF
OVHT SENS ELEMENT
161
36-22-17
16HF
OVHT SENS ELEMENT
171
36-22-17
17HF
OVHT SENS ELEMENT
171
36-22-17
18HF
OVHT SENS ELEMENT
311 312AR
36-22-17
19HF
OVHT SENS ELEMENT
311 312AR
36-22-17
20HF
CABLE ASSY
311 312AR
36-22-17
**ON A/C 101-199,
C. MID and AFT Fuselage Section
(Ref. Fig. 003A, 006A)
------------------------------------------------------------------------------FIN
|
FUNCTIONAL DESIGNATION
| PANEL|ZONE|ACCESS |
ATA
|
|
|
| DOOR |
REF.
------------------------------------------------------------------------------11HF
CONNECTING CABLE
151
36-22-17
12HF
OVHT SENS ELEMENT
151
36-22-17
84HF
OVERHEAT SENSING ELEM
150
36-22-17
13HF
OVHT SENS ELEMENT
151
36-22-17
14HF
OVHT SENS ELEMENT
151
36-22-17
15HF
OVHT SENS ELEMENT
161
36-22-17
16HF
OVHT SENS ELEMENT
171
36-22-17
17HF
OVHT SENS ELEMENT
171
36-22-17
18HF
OVHT SENS ELEMENT
311 312AR
36-22-17
19HF
OVHT SENS ELEMENT
311 312AR
36-22-17
20HF
CABLE ASSY
311 312AR
36-22-17
R
EFF :
001-099, 101-199, 201-249, 251-299,
36-22-00
BAW
Page 29
May 01/09
**ON A/C 401-499,
C. MID and AFT Fuselage Section
(Ref. Fig. 003C, 006C)
REV. DATE : 01-Aug-2011
------------------------------------------------------------------------------FIN
|
FUNCTIONAL DESIGNATION
| PANEL|ZONE|ACCESS |
ATA
|
|
|
| DOOR |
REF.
------------------------------------------------------------------------------11HF
CONNECTING CABLE
151
36-22-17
12HF
OVHT SENS ELEMENT
151
36-22-17
84HF
OVERHEAT SENSING ELEM
150
36-22-17
14HF
OVHT SENS ELEMENT
151
36-22-17
15HF
OVHT SENS ELEMENT
161
36-22-17
16HF
OVHT SENS ELEMENT
171
36-22-17
17HF
OVHT SENS ELEMENT
171
36-22-17
18HF
OVHT SENS ELEMENT
311 312AR
36-22-17
19HF
OVHT SENS ELEMENT
311 312AR
36-22-17
20HF
CABLE ASSY
311 312AR
36-22-17
R
**ON A/C 001-099, 101-199, 201-249, 251-299,
D. Pylon Section
**ON A/C 001-099, 201-220, 251-299,
(Ref. Fig. 003)
**ON A/C 101-199,
(Ref. Fig. 003A)
**ON A/C 221-249,
(Ref. Fig. 003B)
R
**ON A/C 001-099, 101-199, 201-249, 251-299,
(Ref. Fig. 007)
R
EFF :
ALL
36-22-00
BAW
Page 30
Nov 01/09
REV. DATE : 01-Aug-2011
R
R
Component Location - Lower MID and AFT Fuselage
Figure 006C
R
EFF :
401-499,
36-22-00
BAW
Page 31
Nov 01/08
REV. DATE : 01-Aug-2011
Component Location - Pylon
Figure 007
R
EFF :
001-099, 101-199, 201-249, 251-299,
36-22-00
BAW
Page 32
Nov 01/09
REV. DATE : 01-Aug-2011
------------------------------------------------------------------------------FIN
|
FUNCTIONAL DESIGNATION
| PANEL|ZONE|ACCESS |
ATA
|
|
|
| DOOR |
REF.
------------------------------------------------------------------------------1HF1
SNSG ELEM-OVHT, ENG 1 PYLON
413 414FR
36-22-15
1HF2
SNSG ELEM-OVHT, ENG 2 PYLON
424 423FL
36-22-15
2HF1
CABLE-CONNECTING, ENG 1 PYLON
413 414FR
36-22-00
2HF2
CABLE-CONNECTING, ENG 2 PYLON
424 423FL
36-22-00
3HF1
CABLE ASSY
413 413FR
36-22-00
3HF2
CABLE ASSY
424 423FL
36-22-00
R
**ON A/C 401-499,
R
R
D. Pylon Section
(Ref. Fig. 003C, 007A)
R
R
R
R
R
R
R
R
R
R
------------------------------------------------------------------------------FIN
|
FUNCTIONAL DESIGNATION
| PANEL|ZONE|ACCESS |
ATA
|
|
|
| DOOR |
REF.
------------------------------------------------------------------------------1HF1
SNSG ELEM-OVHT, ENG 1 PYLON
413 471AR
36-22-15
1HF2
SNSG ELEM-OVHT, ENG 2 PYLON
424 481AL
36-22-15
2HF1
CABLE-CONNECTING, ENG 1 PYLON
413 471AR
36-22-00
2HF2
CABLE-CONNECTING, ENG 2 PYLON
424 481AL
36-22-00
3HF1
CABLE ASSY
413 413FR
36-22-00
3HF2
CABLE ASSY
424 481AL
36-22-00
R
**ON A/C ALL
3. __________________
System Description
**ON A/C 001-099, 201-249, 251-299, 401-499,
(Ref. Fig. 001)
**ON A/C 101-199,
(Ref. Fig. 001A)
**ON A/C ALL
The aircraft leak detection system is divided into LH and RH zones by the
crossfeed valve in the crossfeed duct at STA1537 (FR35). Each leak detection
system operates independently.
Both wing/fuselage leak detection systems are made up of twin loops (A and
B) of overheat sensing elements. This eliminates the possibility of
incorrect warnings, due to an AND logic.
R
EFF :
ALL
36-22-00
BAW
Page 33
Nov 01/09
REV. DATE : 01-Aug-2011
R
R
Component Location - Pylon
Figure 007A
EFF :
401-499,
36-22-00
BAW
Page 34
Nov 01/08
REV. DATE : 01-Aug-2011
The overheat sensing elements are installed in each wing along the forward
face of the front spar. Clamps and rubber grommets attach the overheat
sensing elements at regular intervals along the whole length.
In the fuselage, the elements are installed at STA1537 (FR35) and close to
the crossover bleed-air duct. They continue (LH side elements only) up to
the APU check valve on the pressurized fuselage between STA2189 and STA2243.
A single loop system is installed along the bleed air duct between the APU
check valve and the APU bleed valve.
In each of the pylons, there is a single loop. Each loop is located near the
pylon ventilation duct.
4. Component
_____________________
Description
(Ref. Fig. 002)
The overheat sensing elements have a solid nickel center conductor set in a
ceramic insulation of porous aluminum oxide. An inconel tube contains these
components and is sealed at both ends. Eutectic salt fills the space between
the tubing, the ceramic insulation and the center conductor. This mixture is
compounded to give a signal at alarm temperature. For the wing and fuselage,
the alarm temperature is 124 plus or minus 7 deg.C. The pylon alarm
temperature quantity is 204 plus or minus 12 deg.C.
The impedance between the conductor and the outer tubing decreases suddenly
when the alarm temperature is reached. At this temperature, the center
conductor grounds and gives an alarm signal.
5. Operation
_________
R
**ON A/C 001-099, 101-199, 201-249, 251-299,
(Ref. Fig. 007)
**ON A/C 401-499,
(Ref. Fig. 007A)
R
**ON A/C 001-099, 201-249, 251-299,
(Ref. Fig. 008)
**ON A/C 101-199,
(Ref. Fig. 008A)
EFF :
ALL
36-22-00
BAW
Page 35
May 01/09
**ON A/C 401-499,
(Ref. Fig. 008B)
REV. DATE : 01-Aug-2011
R
**ON A/C 001-099, 201-220, 251-299,
(Ref. Fig. 009)
**ON A/C 101-199,
(Ref. Fig. 009A)
R
**ON A/C 221-249,
(Ref. Fig. 009B)
**ON A/C 401-499,
(Ref. Fig. 009C)
**ON A/C ALL
(Ref. Fig. 010, 011)
The overheat sensing elements continuously monitor the surrounding areas for
overheat conditions. They are connected in series and detect overheat
conditions at any point along the length of the elements. When only a few
inches of the elements are heated to the pre-determined temperature, an
alarm is caused. When this occurs, the bleed air supply is shut off
automatically.
If one loop is inoperative (loop A or B), the remaining loop takes over. If
hot air escapes from the bleed air duct and heats an element of the
operative loop, a signal is given.
The signal causes:
- the amber FAULT light on the AIR COND overhead panel to come on,
- the activation of the ECAM system.
When the ECAM system is activated:
- the MASTER CAUT lights on the panels 131VU and 130VU come on amber
- a single chime sounds
- the message on the upper ECAM display unit comes on
- the BLEED page on the lower ECAM display unit comes on.
EFF :
ALL
36-22-00
BAW
Page 36
May 01/09
REV. DATE : 01-Aug-2011
Component Location - Cockpit
Figure 008
R
EFF :
001-099, 201-249, 251-299,
36-22-00
BAW
Page 37/38
May 01/09
REV. DATE : 01-Aug-2011
Component Location - Cockpit
Figure 008A
R
EFF :
101-199,
36-22-00
BAW
Page 39/40
Nov 01/08
REV. DATE : 01-Aug-2011
INTENTIONALLY BLANK
R
36-22-00
BAW
Page 41
Nov 01/08
REV. DATE : 01-Aug-2011
R
R
Component Location - Cockpit
Figure 008B (SHEET 1)
EFF :
401-499,
36-22-00
BAW
Page 42
Nov 01/08
REV. DATE : 01-Aug-2011
R
R
Component Location - Cockpit
Figure 008B (SHEET 2)
R
EFF :
401-499,
36-22-00
BAW
Page 43
Nov 01/08
REV. DATE : 01-Aug-2011
Leak Detection - Electrical Schematic
Figure 009
R
EFF :
001-099, 201-220, 251-299,
36-22-00
BAW
Page 44
May 01/09
REV. DATE : 01-Aug-2011
Leak Detection - Electrical Schematic
Figure 009A
EFF :
101-199,
36-22-00
BAW
Page 45
Nov 01/08
REV. DATE : 01-Aug-2011
Leak Detection - Electrical Schematic
Figure 009B
R
EFF :
221-249,
36-22-00
BAW
Page 46
May 01/09
REV. DATE : 01-Aug-2011
R
R
Leak Detection - Electrical Schematic
Figure 009C
EFF :
401-499,
36-22-00
BAW
Page 47
Nov 01/08
REV. DATE : 01-Aug-2011
INTENTIONALLY BLANK
36-22-00
BAW
Page 48
Nov 01/08
REV. DATE : 01-Aug-2011
Leak Detection Logic LH
Figure 010
EFF :
ALL
36-22-00
BAW
Page 49/50
Nov 01/08
REV. DATE : 01-Aug-2011
Leak Detector Logic RH
Figure 011
EFF :
ALL
36-22-00
BAW
Page 51/52
Nov 01/08
REV. DATE : 01-Aug-2011
The FAULT light stays on as long as the overheat condition exists. The
valves associated with the loop close automatically. If the overheat
condition is eliminated, the circuit must be reset to open the valves.
The different FAULT warnings on the AIR COND overhead panel 30VU are:
- the FAULT legend on the ENG 1 BLEED pushbutton switch which comes on if
there is an overheat condition in the LH zone (LH pylon, LH wing and LH
MID fuselage),
- the FAULT legend on the ENG 2 BLEED pushbutton switch which comes on if
there is an overheat condition in the RH zone (RH pylon, RH wing and RH
MID fuselage),
- the FAULT legend on the APU BLEED pushbutton switch which comes on if
there is an overheat condition in the MID and AFT fuselage (APU duct).
At the same time as the FAULT legend on the ENG 1 BLEED pushbutton switch
comes on, the following valves close automatically:
- the LH pressure regulating valve,
- the LH wing anti-icing (if the wing anti-icing system is operative) valve,
- the APU bleed valve (the APU pushbutton switch is in the ON position),
- the crossbleed valve (the selector is in the AUTO position).
When the FAULT legend on the ENG 2 BLEED pushbutton switch comes on, the
following valves close automatically:
- the RH pressure regulating valve
- the RH wing anti-icing valve (if the wing anti-icing system is operative)
- the crossbleed valve (the selector is in the AUTO position).
When the FAULT legend on the APU BLEED pushbutton switch comes on, the APU
bleed valve closes automatically (the APU pushbutton switch is in the ON
position). Engine start sequence prevents that the APU bleed valve and the
crossbleed valve (the selector is in the AUTO position) close.
A functional test can only be carried out on the ground by automatic control
activation. It checks the outputs or status of each leak detection loop
in-turn. The maintenance test permits the maintenance crew to check a
specific function of the system. Additionally, the maintenance test finds a
failed Line Replaceable Unit (LRU).
6. Leak
_________________________
(Overheat) Detection
The two bleed air monitor computers (BMC 1 and BMC 2) monitor the seven
detection loops (Loops A and B, LH wing, Loops A and B, RH wing, LH and RH
pylon loops and fuselage loop). The indications are given in Chap. 36-20-00.
EFF :
ALL
36-22-00
BAW
Page 53
Nov 01/08