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Remove the drain port cap of the potable water service panel.
DRAIN HOSES..................................................................................................................CONNECT
Connect drain hoses to the drain port on the :
• Forward and aft drain panels
• Potable water service panel
CONTROL HANDLE (SERVICE PANEL)...........................................................................................
..........................................................................................................TURN TO “DRAIN” AND PULL
To drain, turn the handle to the “DRAIN” position, and then pull it out until it reaches its mechanical
stop. The (A), (B), (C) indicator lights come on. Water flows out of the drain ports of the forward
and aft drain, and the potable water service panels.
�� When the system is drained :
CONTROL HANDLE (SERVICE PANEL)....................................................................................
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SUPPLEMENTARY PROCEDURES
ADVERSE WEATHER - COLD WEATHER
A330/A340 FLEET PRO-SUP-91-30 P 10/12
FCOM 19 AUG 10
.............................................................................................. PUSH AND TURN TO “NORMAL”
The (A), (B), (C) indicator lights go off.
�� In freezing conditions,
The drain valves must stay open after draining to prevent damage to the system :
CONTROL HANDLE (SERVICE PANEL)....................................................................................
....................................................................................................TURN TO “DRAIN” AND PULL
Turn the handle to “DRAIN” position and then pull out until its mechanical stop. The indicator
lights ((A), (B), (C)) come on.
�� If the aircraft’s electrical network is de-energized :
DRAIN CONTROL HANDLE (AFT DRAIN PANEL)....................................................................
........................................................................................................................TURN TO “OPEN”
The most aft (filling line drain valve control) handle on the aft drain panel is set to the “OPEN”
position. It is not possible to close the aft drain panel access door any more.
DRAIN HOSES..................................................................................................... DISCONNECT
PANELS..........................................................................................................CLEAN AND DRY
Note: In freezing conditions, when the drain valves must stay open, do not put the caps on
the service panel drain port..
ACCESS DOORS (FWD, AFT)........................................................................................CLOSE
Water drainage is assured even with access doors closed.
Note: When the drain valve is open manually it is not possible to close the portable water
service panel access door.
ACCESS PLATFORM(S)..............................................................................................REMOVE
Applicable to: ,
WATER DRAINING PROCEDURE
The following procedure must be applied, when the water system needs to be drained, and when
the aircraft is exposed to temperatures below the freezing point.
Draining is usually carried out with the electrical power supply on.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SUPPLEMENTARY PROCEDURES
ADVERSE WEATHER - COLD WEATHER
A330/A340 FLEET PRO-SUP-91-30 P 11/12
FCOM 19 AUG 10
POTABLE-WATER PANELS
ACCESS PLATFORM(S)......................................................................................PUT IN POSITION
SHUT-OFF VALVES IN GALLEYS/TOILETS.............................................................CHECK OPEN
WATER FAUCETS IN GALLEYS/TOILETS.......................................................................................
............................................................................................... CHECK MIDDLE (WARM) POSITION
FWD AND AFT DRAIN, SERVICE PANELS’ ACCESS DOORS.............................................OPEN
DRAIN PORT CAPS........................................................................................................... REMOVE
Remove the drain port cap of the potable water service panel.
DRAIN HOSES..................................................................................................................CONNECT
Connect drain hoses to the drain port on the :
• Forward and aft drain panels
• Potable water service panel
CONTROL HANDLE (SERVICE PANEL)...........................................................................................
　
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