CAUTION : MAKE SURE THAT THE DRAIN VALVES REMAIN OPEN AFTER YOU DRAIN THE
_______
POTABLE WATER SYSTEM IF :
-
THE BLEED AIR SYSTEM IS "OFF" AND
-
THE OUTSIDE AIR TEMPERATURE IS BELOW 0 DEG.C (32 DEG.F). THIS WILL PREVENT DAMAGE TO THE POTABLE WATER SYSTEM.
NOTE : To Fill the potable water system, if electrical power is not available
____
(Ref. TASK 12-15-38-613-002).
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
R No specific 1 ACCESS PLATFORM 2M (6 FT)
R No specific 1 CART - SERVICING, WATER, POTABLE
B. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
12-31-38-660-001 Cold Weather Maintenance - Water/Waste 12-33-21-618-001 Pre-conditioning through the LP Ground Connection 24-42-00-861-001 Energize the Ground Service Network from the External
Power 24-42-00-862-001 De-energize the Ground Service Network Supplied from the External Power
12-15-38-613-002 Fill the Potable Water Tank System (Aircraft
Electrical Power not Available) (for corrective
action)
**ON A/C 001-049, 051-099, 101-149, 201-299,
12-15-38-991-001 Fig. 301
R **ON A/C 151-199, 301-399, 401-499,
12-15-38-991-001-A Fig. 301A
**ON A/C ALL
3. Job Set-up
__________
Subtask 12-15-38-861-050
A. Energize the ground service network
(Ref. TASK 24-42-00-861-001).
**ON A/C 001-049, 051-099, 101-149, 201-299,
Subtask 12-15-38-865-051-C
B. Make sure that this(these) circuit breaker(s) is(are) closed: -------------------------------------------------------------------------------PANEL SERVICE IDENT. LOCATION -------------------------------------------------------------------------------
2000VU WATER SYS - QUANT IND 1MA B01 2001VU WATER SYS - DRAIN 1MP B05
R **ON A/C 151-199, 301-399, 401-499,
Subtask 12-15-38-865-051-B
B. Make sure that this(these) circuit breaker(s) is(are) closed: -------------------------------------------------------------------------------PANEL SERVICE IDENT. LOCATION -------------------------------------------------------------------------------
2001VU WATER SYS - QUANT IND 1MA B06 2001VU WATER SYS DRAIN 1MP B05
**ON A/C ALL
Subtask 12-15-38-618-050
C. Preparation to Fill the Potable Water System
(1)
Obey the cold weather maintenance procedure (Ref. TASK 12-31-38-660-001).
(2)
If the temperature in the aircraft is below 4 DEG.C (39.20 DEG.F) do the pre-conditioning procedure (Ref. TASK 12-33-21-618-001).
Subtask 12-15-38-010-050
D. Get Access
(1)
Put the ACCESS PLATFORM 2M (6 FT) in position.
(2)
Open the access panel 171AL.
(3)
Open the POTABLE WATER FILL AND DRAIN port on the service panel.
4. Procedure
_________
**ON A/C 001-049, 051-099, 101-149, 201-299,
(Ref. Fig. 301/TASK 12-15-38-991-001) R **ON A/C 151-199, 301-399, 401-499,
(Ref. Fig. 301A/TASK 12-15-38-991-001-A)
Potable Water Service-Panel 2023VU
Figure 301/TASK 12-15-38-991-001
R 1EFF : 001-049, 051-099, 101-149, 201-299, 1 12-15-38Page 304 1 1 May 01/05 1 1 1CES 1
Potable Water Service-Panel 2023VU
Figure 301A/TASK 12-15-38-991-001-A
R 1EFF : 151-199, 301-399, 401-499, 1 12-15-38Page 305 1 1 Aug 01/05 1 1 1CES 1
R **ON A/C 001-049, 051-099, 101-149, 201-299,
Subtask 12-15-38-613-050
A. Fill the Potable Water system
CAUTION : BEFORE YOU DO THE SERVICING OF THE POTABLE-WATER TANK, MAKE
_______ SURE THAT THE QUANTITY INDICATION SYSTEM IS ENERGIZED AND OPERATES CORRECTLY. IF IT IS NOT, YOU MUST SET THE CONTROL HANDLE (326MM) TO OPEN THE OVERFLOW VALVE (8MP). IF THIS VALVE IS NOT OPEN, WATER CAN FLOW INTO THE PASSENGER COMPARTMENT.
(1) If the indication system is not satisfactory, do the servicing without electrical power (Ref. TASK 12-15-38-613-002).
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