ATA 38 Water Waste [PDF]

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MAINTENANCE TRAINING NOTES

T1 42 & 72 PEC-MPC (PWC 120) ref 72212A Ver 1.5

ATA 38 WATER WASTE

Date of issue 25/04/08 This publication will not be updated on a regular basis.

General description Page 2/ 20

V3801

Copyright © 2001-2008 - ATR Training Centre - All right reserved For Training Only

ACOS v1.4

The potable water system uses the water tank. It is located in the pressurized section, attached to the back of the toilet unit. The potable water service panel is located on the LH side of the fuselage, after of the entry door. The toilet system operates using the water in the toilet tank. The toilet service panel is located under the fuselage. The waste water drain system is used for toilet tank.

Î Potable water system Î Toilet system Î Waste water drain system

The water & waste system consits of the following systems:

General description

ATA 38

V3802

System control panels

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System control panels

ACOS v1.4

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Interfaces

V3803

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Interfaces

ACOS v1.4

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Features

V3804

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Features

ACOS v1.4

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V3804

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Features

ACOS v1.4

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V3805

Toilet tank precautions

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Toilet tank precautions

ACOS v1.4

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Potable water description

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a potable water service panel, a water tank, above the potable water service panel.

V3806

♦

♦

Î The potable water system comprises :

Potable water description

ATA 38

ACOS v1.4

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Potable water description Page 9/ 20

V3806

from overflowing during filling operations. Copyright © 2001-2008 - ATR Training Centre - All right reserved For Training Only

ACOS v1.4

Î An inhibit system prevents closing of the service panel door if the filling and draining valve control handle is not the closed position. Î The capacity of the water tank is 15 liters (4 US gal.). Î Ventilation is ensured by passager compartment ambient air from a valve installed on the upper part of the tank. The shape of this valve prevents water

is blanked off automatically when the service panel door is closed.

Î The potable water service panel consists of a filling coupling with a cap, a filling and draining valve control handle and an overflow port. The overflow port

ATA 38

Operation

Copyright © 2001-2008 - ATR Training Centre - All right reserved For Training Only

a standard filling coupling, a manually controled, two-position filling and draining valve, a filling pipe connecting the filling coupling to the lower part of the tank, an overflow system consisting of a pipe connecting the upper part of the tank to the overflow port located on the service panel.

V3807

♦

♦

♦

♦

Î The potable water system comprises a filling system and a distribution system. Î The filling system is composed of :

Operation

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ACOS v1.4

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Î Î Î Î Î

Operation Page 11/ 20

V3807

Copyright © 2001-2008 - ATR Training Centre - All right reserved For Training Only

The faucet is a push-to-operate type. It closes and remains closed when not pressed. ACOS v1.4

The distribution pipe will automatically empty when the tank is drained for maintenance purposes or for extended parking periods in freezing weather.

The distribution pipe taps water from the filling pipe, because the faucet and the connection are situated at different levels.

The distribution system permits water to be gravity distributed from the tank to the wash basin.

The potable water system comprises a filling system and a distribution system.

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Toilet system Description

Copyright © 2001-2008 - ATR Training Centre - All right reserved For Training Only

a toilet service panel, a toilet tank, a filling and flushing system, a waste disposal and toilet flushing system.

V3808

♦

♦

♦

♦

Î The toilet water system consists of :

Toilet system Description

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ACOS v1.4

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Î Î Î Î Î

Toilet system Description

V3808

Copyright © 2001-2008 - ATR Training Centre - All right reserved For Training Only

The tank leakage drain outlet is automatically blanked off when the service panel door is closed.

A waste drain valve control handle allows the toilet tank to be emptied .

Another standard coupling (B), closed by a plug, is used to flush and fill the toilet tank.

The drain hose outlet is closed on the service panel by a removable safety plug and a cap.

The toilet service panel comprises a standard coupling (A) enabling the toilet tank to be drained.

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ACOS v1.4

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Toilet system Description

V3808

Copyright © 2001-2008 - ATR Training Centre - All right reserved For Training Only

Î The toilet tank is made of composite material and has a total capacity of 70 liters, including 8.7 liters for cleaning. Î The tank is fitted with a vent line which uses pax compartment ambient air.

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ACOS v1.4

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Toilet system Description

Copyright © 2001-2008 - ATR Training Centre - All right reserved For Training Only

a standard coupling for connection to the service vehicle, a pipe connecting the coupling to a check valve fitted on the upper part of the tank, a hose connecting the check valve and the atomizer which are parts of the filter motor pump assembly.

V3808

♦

♦

♦

Î The filling and flushin system comprising :

ATA 38

ACOS v1.4

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Toilet system Description Page 16/ 20

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ACOS v1.4

a flush motor supplied with 28V DC SVCE BUS, the pump which has a capacity of 50 l/mn at 0.5 bar, a filter basket which separates solid particles from liquid, a timer which controls the flush cycle. The flush motor operates 10+/-2 seconds and the flush system is primed again after 6+/-2 seconds.

V3808

♦

♦

♦

♦

Î The waste disposal and toilet flushing system comprises a filter motor pump assembly. This includes :

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V3808

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Toilet system Description

ACOS v1.4

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Operation

V3809

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Operation

ACOS v1.4

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Operation Page 19/ 20

a drain valve located inside the toilet tank, controlled by means of cable from the service panel; a toilet waste drain which connects the lower part of the tank of the coupling on the service panel.

Copyright © 2001-2008 - ATR Training Centre - All right reserved For Training Only

ACOS v1.4

the waste water flows through a drain line when the wash basin plug is opened. This plug remains closed as long as the control is not operated; the anti-corrosion tank (located under the toilet tank) is drained automatically via leakage drain valve.

V3809

♦

♦

Î There are two types of draining:

♦

♦

Î The evacuation system comprises:

filter motor pump assembly. This includes: ♦ an electrical circuit, supplied with 28V DC SVCE BUS; ♦ a hose which ducts the filtered liquid from the pump to the upper part of the waste tank.

Î The pressurized water is used to spray and clean the filter basket of the filter motor pump assembly and the interior of the waste tank. Î In normal flushing operation, waste water mixed with clean water is filtered and used for toilet flushing. The waste disposal and toilet flushing system is the

to the atomizer via a connecting pipe.

Î During filling and flushing operations, clean water from the service vehicle flows under pressure through the check valve and to the anti-syphon valve and

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V3809

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18

8

Potable water description

Operation

7

Toilet tank precautions

12

5

Features

Toilet system Description

4

Interfaces

10

3

System control panels

Operation

2

General description

ATA 38 WATER WASTE

Summary

ACOS v1.4

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