Switch
26-22-00-710-001 Operational Test of the APU Fire-Extinguishing
Loop/Squib
26-22-00-710-004 Operational Test of APU Fire-Exting. P/BSW funct. (single chan. config) and APU LP Fuel-Valve using each indiv. motor in turn and APU Emerg. Shutdown Circuit
26-12-12-991-003 Fig. 402
3. Job Set-up
__________
Subtask 26-12-12-860-052
A. Safety Precautions
(1) In the cockpit:
(a)
On the ENG panel 115VU, make sure that the warning notice is in position to tell persons not to start the engines.
(b)
On the OVERHEAD CTL & IND panel 25VU, make sure that the warning notice is in position to tell persons not to start the APU.
Subtask 26-12-12-861-051
B. Make sure that the ground service network is energized
(Ref. TASK 24-42-00-861-001).
Subtask 26-12-12-865-057
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
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PANEL DESIGNATION IDENT. LOCATION
-------------------------------------------------------------------------------
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
49VU AIR COND/FLOW/CTL &/IND1 1HB D07
**ON A/C ALL
49VU FUEL/LP VALVE/MOT1/ENG2 2QG A09 49VU FUEL/LP VALVE/MOT1/ENG1 1QG A08 49VU ENGINE/2/FIRE DET/LOOP B 8WD2 A07 49VU ENGINE/1/FIRE DET/LOOP A 7WD1 A06 49VU HYD/FIRE VALVE/Y/ENG2 3702GD C14 49VU HYD/FIRE VALVE/G/ENG1 1703GK C13 49VU AIR BLEED/ENG 1/CTL 3HA1 D12 49VU AIR BLEED/ENG 1/MONG 2HA1 D11 121VU APU/FIRE AND OVHT/DET/LOOP B 2WG L44 121VU APU/FIRE AND OVHT/DET/LOOP A 1WG L43 121VU APU/FIRE/EXTIG/SQUIB/B 2WF L39
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PANEL DESIGNATION IDENT. LOCATION
-------------------------------------------------------------------------------
121VU APU/FIRE/EXTIG/SQUIB/A 121VU APU/FIRE/LP VALVE/NORM 121VU APU/FIRE/LP VALVE/STBY 121VU FUEL/LP VALVE/MOT2/ENG2 121VU FUEL/LP VALVE/MOT2/ENG1 121VU ENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/B 121VU ENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/A 121VU ENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/B 121VU ENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/A 121VU ENGINE/ENG2/FIRE DET/LOOP A 121VU ENGINE/ENG1/FIRE DET/LOOP B 1WF 4WF 3WF 4QG 3QG 2WE1 1WE1 2WE2 1WE2 7WD2 8WD1 L38M42M41M26M25Q44Q43Q42Q41Q39Q38
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
RR 122VU AIR COND/FLOW/CTL AND IND/2 122VU APU GEN/EGIU2/28VDC 122VU GEN2/EGIU2/28VDC 122VU ELEC/EXT PWR/EGIU1/28VDC 122VU ELEC/GEN1/EGIU1/28VDC 2HB 26XU2 24XU2 26XU1 24XU1 V21 Y31Y30Z31Z30
R **ON A/C ALL
R R R R 122VU ELEC/GCU/2 122VU ELEC/GCU/1 122VU AIR BLEED/ENG 2/CTL 122VU AIR BLEED/ENG 2/MONG 2XU2 2XU1 3HA2 2HA2 T27 T26 Z23 Z22
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
R R 123VU GEN1/EGIU1/115VAC 123VU GEN2/EGIU2/115VAC 23XU1 23XU2 AF12 AF01
R **ON A/C ALL
4. Procedure
_________
(Ref. Fig. 402/TASK 26-12-12-991-003) Subtask 26-12-12-420-052
A. Installation of the FIRE Pushbutton Switch
(1)
Put in position the pushbutton switch (2) in the ENG/APU Fire panel (1).
(2)
Push the pushbutton switch (2) to connect the electrical connector.
(3)
Install the screws (3) and tighten them to between 0.49 and 0.68 m.daN (43.36 and 60.17 lbf.in).
(4)
Make sure that the 3 safety guards (4) of the pushbutton switches (2) are open.
(5)
Install the lighted plate (5) on the ENG/FIRE panel (1).
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