A. Energize the ground service network
(Ref. TASK 24-42-00-861-001).
R **ON A/C 001-049, 051-099, 101-149, 201-299,
Subtask 38-10-00-865-053
B. Make sure that this(these) circuit breaker(s) is(are) closed: -------------------------------------------------------------------------------PANEL SERVICE IDENT. LOCATION -------------------------------------------------------------------------------
2000VU WATER SYSTEM - QUANT IND 1MA B01
R **ON A/C 151-199, 401-499,
Subtask 38-10-00-865-053-A
B. Make sure that this(these) circuit breaker(s) is(are) closed: -------------------------------------------------------------------------------PANEL SERVICE IDENT. LOCATION -------------------------------------------------------------------------------
2001VU WATER SYS 1MA B06
**ON A/C 301-399,
Subtask 38-10-00-865-053-B
B. Make sure that this(these) circuit breaker(s) is(are) closed: -------------------------------------------------------------------------------PANEL SERVICE IDENT. LOCATION -------------------------------------------------------------------------------
2001VU WATER SYS - QUANT IND 1MA B06
**ON A/C ALL
Subtask 38-10-00-210-054
C. Make sure that the APU BLEED switch on the AIR COND panel 30VU is set to OFF if the APU is running.
Subtask 38-10-00-010-055
D. Get Access
(1)
Open the lavatory door.
(2)
Put the ACCESS PLATFORM 2M (6 FT) in position at Zone 171.
(3)
Open the access door 171AL.
4. Procedure
_________ Subtask 38-10-00-614-054
A. Depressurization of the Potable Water System
(1)
Turn and pull the fill and drain handle at the service panel 2023VU from the NORMAL to the FILL position.
(2)
Operate the water faucet in the lavatories to let air into the system.
(3)
Turn the fill and drain handle to the NORMAL position.
5. Close-up
________ Subtask 38-10-00-862-051
A. De-energize the ground service network
(Ref. TASK 24-42-00-862-001).
Subtask 38-10-00-410-057
B. Close Access
(1)
Close the lavatory door.
(2)
Close the service door 171AL.
(3)
Remove the access platform(s).
WATER STORAGE - DESCRIPTION AND OPERATION
_________________________________________
1. General
_______
**ON A/C 001-049, 051-099, 101-149, 201-299,
The potable water tank is installed in the pressurized underfloor area RH behind the forward cargo compartment. Air, which is tapped from the bleed air cross-feed line, pressurizes it (Ref. AMM 38-41-00). An indication system monitors the quantity of water in the tank (Ref. AMM 38-13-00).
R **ON A/C 151-199, 301-399, 401-499,
The potable water tank is installed in the pressurized underfloor area LH behind the rear cargo compartment. Air, which is tapped from the bleed air cross-feed line, pressurizes it (Ref. AMM 38-41-00). An indication system monitors the quantity of water in the tank (Ref. AMM 38-13-00).
**ON A/C ALL
2. Component Location
__________________
**ON A/C 001-049, 051-099, 101-149, 201-299,
(Ref. Fig. 001)
-------------------------------------------------------------------------------FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS
DOOR -------------------------------------------------------------------------------3000MM WATER TANK 138 2023VU POTABLE WATER SERVICE PANEL 171 171AL
16MA FILL/ DRAIN VALVE 171 3254MM FILL/DRAIN CONTROL HANDLE 2023VU 171 171AL 3251MM FILL/DRAIN PORT 2023VU 171 171AL 3257MM DRAIN PORT 138 192NB 3256MM OVERFLOW PORT 138 192NB
3MA WATER CONTENTS QUANTITY TRANSMITTER 138 5MA LIMIT SWITCH 2023VU 171 171AL 2MP DRAIN VALVE CONTROL LIGHT 2023VU 171 171AL 3MP LIMIT SWITCH 171 4MP DRAIN VALVE 133 8MP OVERFLOW VALVE 138
R Water Storage System - Component Location Figure 001
1EFF : 001-049, 051-099, 101-149, 201-299, 1 38-11-00Page 2 1 1 Aug 01/05 1 1 1CES 1
-------------------------------------------------------------------------------FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS DOOR -------------------------------------------------------------------------------14MP DRAIN VALVE
138
R **ON A/C 151-199, 301-399, 401-499,
(Ref. Fig. 001A)
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