(b)
Remove the indicator mounting screws.
(c)
Remove the indicator from the water service panel.
TASK 38-14-62-404-008
3. Water Quantity Indicator Installation_____________________________________(Fig. 401)
A. References
(1)
AMM 12-14-61/301, Water System
(2)
AMM 24-22-00/201, Manual Control
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747-400
MAINTENANCE MANUAL
Water Quantity Indicator Installation
Figure 401
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C28592
A
747-400
MAINTENANCE MANUAL
B. Access
(1)
Location Zone 128 Area Aft of Forward Cargo Container Compartment, Right
(2)
Access Panel
191FF Access Door, Water Service
C. Procedure
S 424-009
(1) Install the indicator.
(a)
Install the indicator into its position
(b)
Install the mounting screws.
(c)
Install the electrical connector.
S 864-002
(2)
Do this task: "Water System Servicing (Fill)" (AMM 12-14-61/301).
S 714-003
(3)
Make sure the indicator shows full.
S 414-004
(4)
Close the water service panel door.
S 864-010
(5)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
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747-400 MAINTENANCE MANUAL
ATTENDANTS PANEL WATER QUANTITY INDICATOR - REMOVAL/INSTALLATION
________________________________________________________________
1. General_______
A. This procedure includes two tasks.
(1)
The removal of the water quantity indicator on the attendants panel.
(2)
The installation of the water quantity indicator on the attendants panel.
(3)
The water quantity indicator (indicator) is part of the potable water module. To replace the indicator you must replace the potable water module.
(4)
The installation task of the indicator includes an operational check.
TASK 38-14-63-384-003
2. Water Quantity Indicator Removal (Fig. 401)________________________________
A. Access
(1) Location Zone 224 Upper Deck Crew Rest Body Sta 385 to 632, Right
B. Procedure
S 864-012
(1) Open this circuit breaker on P180 DC Power Distribution Panel and attach a DO-NOT-CLOSE tag:
(a) 180D19, POT WATER SYSTEM
S 014-001
(2) Remove the panel shroud.
(a)
Remove the screws from the bottom of the panel shroud.
(b)
Lift the panel shroud approximately 1/2 inch.
(c)
Move the panel shroud away from the panel.
S 024-002
(3) Remove the potable water module together with the indicator.
(a)
Remove the four mounting screws from the potable water module.
(b)
Pull the potable water module away to get access to the electrical connector.
(c)
Disconnect the electrical connector from the rear of the potable water module.
(d)
Remove the potable water module.
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