Subtask 21-51-51-865-058
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------FOR 11HB
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
R 49VU AIR COND/FLOW/CTL &/IND1 122VU AIR COND/PACK TEMP/CTL SYS1/1/115VAC 122VU AIR COND/PACK TEMP/CTL SYS1/1/28VDC 1HB 1HH 3HH D07X22X21
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
R 122VU AIR COND/PACK TEMP CTL SYS2/1/28VDC 4HH Y19
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
R 122VU AIR COND/PACK TEMP CTL SYS2/1/115VAC 2HH Y18
R **ON A/C 106-149, 303-399,
R 122VU 4HH Y19
**ON A/C ALL
FOR 8HB
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
122VU AIR COND/FLOW/CTL AND IND/2 122VU AIR COND/PACK TEMP/CTL SYS1/2/115VAC 122VU AIR COND/PACK TEMP/CTL SYS1/2/28VDC 122VU AIR COND/PACK TEMP CTL SYS2/2/28VDC 122VU AIR COND/PACK TEMP CTL SYS2/2/115VAC 2HB 21HH 23HH 24HH 22HH V21W22W21Y21Y20
**ON A/C ALL
Subtask 21-51-51-860-051
C. Aircraft Maintenance Configuration
(1) On the panel 30VU:
(a) Make sure that:
-
the APU BLEED pushbutton switch is in the off position (the ON legend is off) and,
-
the ENG 1 BLEED and the ENG 2 BLEED pushbutton switches are in the off position (the OFF legends are on).
Subtask 21-51-51-941-051
D. Safety Precautions
(1)
On the panel 30VU put a warning notice in position to tell persons not to operate:
-
the APU BLEED pushbutton switch and,
-
the ENG 1 BLEED and the ENG 2 BLEED pushbutton switches.
(2)
On the HP ground connector put a warning notice in position to tell persons not to supply the ground air.
Subtask 21-51-51-010-055
E. Get Access
(1) Remove the access panels (Ref. TASK 53-35-13-000-002):
(a)
FOR 11HB
191KB and 191BB.
(b)
FOR 8HB
192KB 191BB.
4. Procedure
_________
WARNING : MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM
_______
FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE.
HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
WARNING : DO NOT TOUCH THE COMPONENT UNTIL IT IS SUFFICIENTLY
_______
COOL TO PREVENT BURNS.
1EFF : ALL 1 21-51-51Page 304 1 1 Aug 01/05R 1 1 1CES 1
Subtask 21-51-51-020-063
A. Removal of the Filter
R (Ref. Fig. 301/TASK 21-51-51-991-005)
R
(1)
Remove and discard the lockwire from the filter (3) and the set-screw (1).
(2)
TORQUE the set-screw (1) to between 0.040 and 0.050 m.daN (3.53 and
4.42 lbf.in).
NOTE : This is a precaution to make sure that the downstream probe
____ does not turn when you remove the filter (3).
(3)
Remove the filter (3) and discard the seal (2).
(4)
Do the cleaning procedure of the filter (Ref.CMM 21-51-09) or install a new one.
Subtask 21-51-51-420-055
B. Installation of the Filter
WARNING : MAKE SURE THAT THERE IS A GOOD FLOW OF AIR THROUGH THE WORK
_______ AREA WHEN YOU USE SPECIAL MATERIALS. IF YOU GET ONE OF THESE MATERIALS ON YOUR SKIN, IN YOUR MOUTH OR IN YOUR EYES : -FLUSH IT AWAY WITH A FLOW OF CLEAN WATER FOR BETWEEN 10 AND 15 MINUTES. -GET IMMEDIATE MEDICAL AID IF IRRITATION OCCURS. DO NOT BREATHE THE FUMES FROM THE MATERIAL. DO NOT SMOKE WHEN YOU USE THE MATERIAL. DO NOT USE THE MATERIAL NEAR A FLAME, SPARKS OR SOURCES OF HEAT. THESE MATERIALS ARE DANGEROUS : THEY ARE POISONOUS, FLAMMABLE AND SKIN IRRITANTS.
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