(2)
Make sure that the potable water shutoff-valve in each wet galley is open.
(3)
Make sure that the potable water-mixing timer control-knob in each lavatory is set to the center position (between the RED and BLUE band).
(4)
Make sure that the potable water shutoff-valve in each galley is open.
**ON A/C 001-049, 051-099, 101-149, 201-299,
Subtask 12-24-38-010-054
F. Open for Access
(1)
Open the access panels 133AL, 192NB, 171AL.
(2)
Remove the cap from the fill and drain port on the service panel 2023VU.
R **ON A/C 151-199, 301-399, 401-499,
Subtask 12-24-38-010-054-A
F. Open for Access
(1)
Open the access panels 133AL, 171AL.
(2)
Remove the cap from the fill and drain port on the service panel 2023VU.
**ON A/C ALL
4. Procedure
_________
**ON A/C 001-049, 051-099, 101-149, 201-299,
Subtask 12-24-38-680-051
A. Drain the Potable Water System
(Ref. Fig. 201/TASK 12-24-38-991-004-A)
(1) Connect the HOSE - DRAIN to:
-
The fill and drain port on the potable water service-panel 2023VU,
-
The drain port on the MID drain and overflow panel,
-
The drain port on the FWD drain panel.
Potable Water Service-Panel Figure 201/TASK 12-24-38-991-004-A
R 1EFF : 001-049, 051-099, 101-149, 201-299, 1 12-24-38Page 206 1 1 May 01/05 1 1 1CES 1 (2) On the potable water service-panel 2023VU:
(a) Turn the fill and drain control handle 3254MM to the PULL TO DRAIN position. Then pull it out to the mechanical stop.
NOTE : These lights come on:
____
-
The drain valve control light 2MP,
-
The drain valve control light 12MP,
-
The overflow valve control light 6MP.
NOTE : Water will drain from:
____
-
The fill and drain port on the potable water service-panel 2023VU,
-
The drain port on the MID drain and overflow panel,
-
The drain port on the FWD drain panel.
(3) Operate the water faucet(s) in the galley(s), the coffee makers and or the water heater to drain them.
NOTE : To drain the residual water from the galley(s) it is necessary
____ to repeat step (3) several times. The duration of the residual water drainage after the end of the water outflow from the potable water system can take at least 15 minutes. This depends on the attitude of the aircraft. Step (3) must be repeated again when the aircraft has been moved.
(4)
When the system is drained, remove the drain hose from:
-
The fill and drain port at the service panel 2023VU,
-
The drain port on the MID drain and overflow panel,
-
The drain port on the FWD drain panel.
(5)
Return the fill and drain control handle 3254MM to the NORMAL position.
R **ON A/C 151-199, 401-499,
Subtask 12-24-38-680-051-A
A. Drain the Potable Water System
(Ref. Fig. 201A/TASK 12-24-38-991-004-B)
(1) Connect the HOSE - DRAIN to:
-
The fill and drain port on the service panel,
-
The drain port on the FWD drain panel.
R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 12-24-38Page 207 1201-299, 401-499, 1Aug 01/05 1 1 1CES 1
Potable Water Service-Panel Figure 201A/TASK 12-24-38-991-004-B
R 1EFF : 151-199, 301-399, 401-499, 1 12-24-38Page 208 1 1 Aug 01/05 1 1 1CES 1
(2) On the potable water service-panel 2023VU:
(a) Turn the fill and drain control handle 3254MM to the PULL TO DRAIN position. Then pull it out to the mechanical stop.
NOTE : The drain valve control light 2MP comes on.
____
NOTE : Water will drain from:
____
-
The fill and drain port on the potable water service-panel 2023VU,
-
The drain port on the FWD drain panel.
(3)
In the Lavatories/Galleys:
(a) Push the toilet flush button to drain the remaining water from the toilet system.
(4)
Operate the water faucet(s) in the galley(s), the coffee makers and or the water heater to drain them.
NOTE : To drain the residual water from the galley(s) it is necessary
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