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Pack Discharge Pressure Sensor
Figure 401/TASK 21-61-14-991-001
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(4)
Put blanking plugs on the disconnected line ends.
(5)
Remove the nut (2), the washer (3), the screw (4) and disconnect the bonding strap (5).
(6)
Remove the screws (6) and the washers (7).
(7)
Remove the pack discharge pressure sensor (11) and the clamps (8) at the same time.
(8)
Remove the clamps (8) from the pack discharge pressure sensor (11).
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Installation of the Pack Discharge Pressure Sensor (14HH, 20HH)
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.
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific Torque Wrench : range 0.00 to 1.20 m.daN
(0.00 to 9.00 lbf.ft)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-33-21-618-001 Pre-conditioning through the HP Ground Connection 12-33-21-618-001 Pre-conditioning with the APU 20-28-00-912-002 Electrical Bonding of Components With Conductive
Bolts and Screws in the Tanks 21-61-00-710-001 Operational Test of the Pack Temperature-Control System 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 53-35-13-000-002 Removal of the Quick-Release Access Panels from the Belly Fairing Structure 53-35-13-400-002 Installation of the Quick-Release Access Panels on the Belly Fairing Structure 21-61-14-991-001 Fig. 401
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3. Job Set-up__________
Subtask 21-61-14-860-050
A. Aircraft Maintenance Configuration
(1) Make sure that:
(a) The aircraft electrical circuits are energized (Ref. TASK 24-41-00-861-002).
(b) The access panel is removed (Ref. TASK 53-35-13-000-002),
R 1_ FOR 14HH 191KB.
R 2_ FOR 20HH 192KB.
Subtask 21-61-14-865-051
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
RRR R FOR 14HH 49VU AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC 122VU AIR COND/TEMP CTL SYS 1/CHAN A/115VAC 122VU AIR COND/TEMP CTL SYS 1/CHAN A/28VDC 122VU AIR COND/TEMP CTL SYS 1/CHAN B/115VAC FOR 20HH 122VU AIR COND/TEMP CTL SYS 2/CHAN A/115VAC 122VU AIR COND/TEMP CTL SYS 2/CHAN A/28VDC 122VU AIR COND/TEMP CTL SYS 2/CHAN B/28VDC 122VU AIR COND/TEMP CTL SYS 2/CHAN B/115VAC 52HH 49HH 51HH 50HH 53HH 55HH 56HH 54HH D08 X22X21Y18W22W21 Y21Y20
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4. Procedure
_________
(Ref. Fig. 401/TASK 21-61-14-991-001) Subtask 21-61-14-420-050
A. Installation of the Pack Discharge Pressure Sensor
(1)
Clean the component interface and/or the adjacent area.
(2)
Make sure that the parts retained from the removed component are clean and in the correct condition.
(3)
Put the clamps (8) in position on the pack discharge pressure sensor (11).
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