B. Consumable Materials
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REFERENCE DESIGNATION
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Material No. 19-003 USA AMS 3819
LINT-FREE COTTON CLOTH (Ref. 20-31-00)
C. Referenced Information
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REFERENCE DESIGNATION
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12-31-38-660-001 Cold Weather Maintenance - Water/Waste
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
R **ON A/C 001-049, 051-099, 101-149, 201-299,
12-24-38-991-004-A Fig. 201
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REFERENCE DESIGNATION -------------------------------------------------------------------------------
R **ON A/C 151-199, 301-399, 401-499,
12-24-38-991-004-B Fig. 201A
**ON A/C ALL
3. Job Set-up
__________
Subtask 12-24-38-680-050
A. Draining of the Potable water System 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.
(1) You must drain the water system when the outside air temperature is as shown in the table.
Table 1 - Water System Drain Configuration
-------------------------------------------------------------------------------| Configuration | Ex | Water Tank| Purge | |----------------------------------------------|posure | Drain | of | | Air | Cabin | Outside |Time in| Required | System | |Conditioning| Temperature | Air |(Hours:| | Required | | | | Temperature | Min) | | | |------------|-------------|-------------------|-------|-----------|----------| | | Above | Between | | | | | | | 0 and -15 DEG.C | Any | NO | | | ON | 10 DEG. C | 32 and 5 DEG.F | | | | | | 50 DEG. F |-------------------|-------|-----------| | | | | Below | | | NO | | | |-15 DEG.C 5 DEG.F | 1:15 | | | |------------|-------------|-------------------|-------| | | | | | Between | | | | | | | 0 and -7 DEG.C | 1:30 | | | | | | 32 and 19.4 DEG.F | | | | | | |-------------------|-------| YES |----------| | OFF | | Between | | | | | | |-7 and -15 DEG.C | 0:30 | | | | | | 19.4 and 5 DEG.F | | | YES | | | |-------------------|-------| | | | | | Below | | | | | | |-15 DEG.C 5 DEG.F | Any | | | |-----------------------------------------------------------------------------| | You must refill the tank with water not more than 30 minutes before you | | start the engines. If the temperature in the aircraft is below 4 DEG.C | | (39.2 DEG.F), pre-condition the aircraft (Ref. 12-33-21 Page 2). | ------------------------------------------------------------------------------
NOTE : To purge the potable water system when the outside air
____ temperature is -7 DEG.C and lower, refer to the Cold Weather Maintenance (Ref 12-31-38 Page 2).
Subtask 12-24-38-861-051
B. 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 12-24-38-865-051-D
C. 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
Subtask 12-24-38-941-052-D
D. Put the ACCESS PLATFORM 2M (6 FT) in position at Zones 171, 138, 133.
R **ON A/C 151-199, 301-399, 401-499,
Subtask 12-24-38-865-051-C
C. 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
Subtask 12-24-38-941-052-C
D. Put the ACCESS PLATFORM 2M (6 FT) in position at Zones 171, 133.
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