1EFF : ALL  1 38-00-00Page 1 1 1 May 01/04 1 1 1CES 1

 POTABLE - DESCRIPTION AND OPERATION
___________________________________
 1. General
_______
 **ON A/C 001-049, 051-099, 101-149, 201-299,
 (Ref. Fig. 001)
R **ON A/C 151-199, 301-399, 401-499,
 (Ref. Fig. 001A)
 **ON A/C ALL
 The potable water system supplies water from the water tank through a distribution system. Potable water is supplied to water faucets in the galleys and lavatories. The system also supplies potable water to the water heaters which are located below the lavatory washbasins. The potable water system includes these subsystems:
 -Water Storage (Ref. AMM 38-11-00),
 -Distribution (Ref. AMM 38-12-00),
 -Quantity Indicating (Ref. AMM 38-13-00),
 -Water Draining (Ref. AMM 38-14-00),
 -Air Supply System (Ref. AMM 38-41-00),
 -Potable Water Ice Protection (Ref. AMM 30-73-00),
 -Drain System Ice Protection (Ref. AMM 30-71-00).

 Potable Water System - Schematic
 Figure 001

R 1EFF : 001-049, 051-099, 101-149, 201-299, 1 38-10-00Page 2 1 1 May 01/05 1 1 1CES 1

 Potable Water System - Schematic
 Figure 001A

R 1EFF : 151-199, 301-399, 401-499, 1 38-10-00Page 3 1 1 Aug 01/05 1 1 1CES 1

 POTABLE - MAINTENANCE PRACTICES
_______________________________
 TASK 38-10-00-670-002
 Sterilization of Water Tank and Distribution System
 WARNING : MAKE SURE THAT THE WATER TANK IS DEPRESSURIZED.

_______
 CAUTION : POINT THE OVERFLOW DRAIN HOSE IN A CORRECT CONTAINER WHEN YOU CONNECT

_______
 IT.

R
 1.
 Reason for the Job

__________________
 Refer to the MPD TASK: 381000-01

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
 No specific filter
 No specific ground air-supply cart
 No specific 1 ACCESS PLATFORM 1M (3 FT)
 No specific 3 CART - DESINFECTION, WATER
 No specific 1 CONTAINER 5 L(1 1/2 USGAL)
 No specific 2 HOSE - VINYL

 B. Consumable Materials
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
No specific indicator paper (for alkali)
 Material No. 14-003E
 DISINFECTANT (POTABLE WATER SYSTEM) (Ref. 20-31-00)
 Material No. 14-003F
 DISINFECTANT (POTABLE WATER SYSTEM) (Ref. 20-31-00)
 Material No. 14-003H
 DISINFECTANT (Ref. 20-31-00) 
R  Material No. 14-003J 
R  DISINFECTANT HYDROGEN PEROXIDE (Ref. 20-31-00) 
R  Material No. 14-003K 
R  DISINFECTANT (Ref. 20-31-00)
 C. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
12-15-38-613-001 Fill the Potable Water Tank System (Aircraft
 Electrical Power Available)
 12-15-38-613-002 Fill the Potable Water Tank System (Aircraft
 Electrical Power not Available)
 12-24-38-680-001 Draining of the Potable Water System (with Electrical
 Power)
 12-24-38-680-002 Draining of the Potable Water System (without
 Electrical Power)
 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
 25-30-00-960-001 Replacement of the Galley Water-Filter Elements (if
 installed)
 38-10-00-614-001 Pressurization of the Potable Water System from a
 Ground Air Supply
 38-12-41-000-006 Removal of the Nozzle Assembly
 38-12-41-400-006 Installation of the Nozzle Assembly

 3. Job Set-up__________
 Subtask 38-10-00-861-051
 A. Energize the ground service network (Ref. TASK 24-42-00-861-001).
 Subtask 38-10-00-680-050 
R  B. Drain the potable water system (Ref. TASK 12-24-38-680-001).
 Subtask 38-10-00-560-051
　
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