Bombardier CRJ 00-Water and Waste

8/20/2019 Bombardier CRJ 00-Water and Waste

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REV 56, J an 31/03WATER AND WASTE SYSTEMS

Table of Contents

FlightCrew Operating Manual

CSP A--013

MASTER

CHAPTER 21 --- WATER AND WASTE SYSTEMS

Page

TABLE OF CONTENTS 21--00 Table of Contents 21--00--1

INTRODUCTION 21--10

Introduction 21--10--1

POTABLE WATER SYSTEM 21--20

Potable Water System 21--20--1

Servicing 21--20--2

System Circuit Breakers 21--20--6

LAVATORY WASTE SYSTEM 21--30

Lavatory Waste System 21--30--1System Circuit Breakers 21--30--3

LIST OF ILLUSTRATIONS

INTRODUCTIONFigure 21--10--1 Potable Water and Waste

Systems -- General Arrangement 21--10--2

POTABLE WATER SYSTEMFigure 21--20--1 Galley P otable Water S ystem 21--20--3

Figure 21--20--2 Lavatory Water System 21--20--4

Figure 21--20--3 Galley Control Panel 21--20--5

LAVATORY WASTE SYSTEMFigure 21--30--1 Waste Disposal System 21--30--2


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Table of Contents

MASTERFlightCrew Operating Manual

CSP A--013

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Introduction


CSP A--013

MASTER

1. INTRODUCTION

The water and waste systems include potable water, lavatory waste equipment and systemcontrols.

Two potable water systems store and supply potable water to the galley and lavatory. Theforward water system supplies potable water to the water dispenser and coffee maker in thegalley. The aft water system supplies wash water to the lavatory sink. Both water systemsare controlled froma single control panel located in the galley. Each water systemhas aservicing panel located on the right forward and aft external fuselage. Each servicing panelhas controls for filling or draining of the related potable water system.

The lavatory waste system consists of a waste holding tank containing flushing fluid and aservicing panel. The servicing panel is located on the right aft external fuselage. Systemcontrols are provided to drain, rinse, prime and flush the toilet.


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Introduction


CSP A--013

Potable Water and Waste Systems ---General ArrangementFigure 21---10---1

AFTDRAINMAST

AFT

WATER TANK SERVICEPANEL

WASHBASINSUPPLY LINE

WASHBASIN

FAUCET

WASHBASIN

DRAIN LINE

GALLEY WATERSUPPLY LINE

FORWARDDRAIN MAST

FORWARD

WATER TANK (UNDER FLOOR)

FORWARDWATER TANK SERVICE PANEL

SERVICEDOOR (REF)

GALLEYDRAINLINE

AFTWATER TANK DRAINLINE

AFT WATER TANK (CARGO BAY)

TOILETDRAIN/SERVICEPANEL


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Potable Water System


CSP A--013

MASTER

1. POTABLE WATER SYSTEM

The potable water systemstores, supplies and controls the flow of water to the galley andlavatory. Potable water for the coffee maker, water dispenser and galley wash basin isstored in the forward water tank. Potable water for the lavatory wash basin is stored in the

aft water tank. Each tank has a water level/temperature probe and a heater. System poweron/off switches, water tank level lights and system circuit breakers are located on the galleycontrol panel in the galley. The forward and aft water systems are independent, but arecontrolled by a single potable water systemelectronic control unit (ECU) located in theavionics compartment. The ECU controls the tank heaters, pumps and provides water levelindications to the control panel.

Potable water is supplied to the galley froma single 5 USG (19 LTR) water tank locatedunder the galley floor. Potable water is supplied to the galley by an ECU controlled pump,which maintains the water supply line pressure to the galley. The ECU controls the galleytank heater to maintain the water temperature between 10 to 20_C (50 -- 68_F). Each tankheater contains a thermal fuse for overheat protection, which removes power to the heaterwhen it exceeds a preset point and turns on the OVHT light on the galley control panel.

Potable water is supplied to the galley froma single 8 USG (30 LTR) water tank locatedunder the galley floor. Potable water is supplied to the galley by an ECU controlled pump,which maintains the water supply line pressure to the galley. The ECU controls the galleytank heater to maintain the water temperature between 10 to 20_C (50 -- 68_F). Each tankheater contains a thermal fuse for overheat protection which removes power to the heaterwhen it exceeds a preset point and turns on the OVHT light on the galley control panel.

Potable water is supplied to the lavatory sink froma single 5 USG (19 LTR) water tanklocated in the baggage compartment. Potable water is supplied to the lavatory by a pumpwhich is controlled by the sink faucet selection. Wash basin water is heated to 25 !5_C(77#9_F).

A water level/temperature probe is installed in each tank and supplies level and temperatureinformation to the ECU. The ECU then uses the information to control the tank heaters andto illuminate the respective empty, 1/4, 1/2, 3/4 or full level indicator on the galley controlpanel.

Electrical power for the ECU, tank heaters and line heaters is controlled by the respectivegalley and lavatory ON/OFF switches on the galley control panel.

Effectivity:

S Airplanes Pre S B 601 R --38 --19 thru 22

Each systemprovides drainage of used water overboard through drain masts on the bottom of the fuselage. All components that could possibly freeze are heated and/or insulated tomaintain the component temperature above the freezing point.


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CSP A--013

CAUTION

In flight, if the galley or lavatory ON/OFF switch is

inadvertently selected OFF, power will be removedfrom the corresponding mast heater. Continued useof the respective drain system may cause iceaccumulationonthedrainmastwhich maydetachandcause damage to the aircraft.

Effectivity:

S Airplanes Post S B 601R --38 --19 thru 22

Each system provides drainage of used water overboard through drain masts on the bottom of the fuselage. All components that are likely to freeze are heated and/or insulated to maintain

the component temperature abovethe freezing point. The drain mast heaters are continuouslypowered fromAC utility bus 2. This is done to prevent ice build--up on the drain masts, inflight, if the galley or lavatory ON/OFF switch is inadvertently selected OFF. Power can beremoved from the drain masts by opening the LINE HTR circuit breakers on the potable watersystem control panel or by removing power from AC utility bus 2.

2. SERVICING

Each potable water systemhas a service panel located on the right side of the externalfuselage. The galley service panel is forward and the lavatory service panel aft. Eachservice panel has a water fill port and a control handle.

When the control handle is positioned to the FILL position, water can be pumped into thesystemusing the fill adapter. When the tank is full, water flows out through the overboarddrain mast. When the control handle is placed in the DRAIN position and pulled, the potablewater is drained from the tank through the drain mast.

Effectivity:

S Airplanes Post S B 601R --38 --19 thru 22

When the control handle is positioned to the FILL position, water can be pumped into thesystemusing the fill adapter. When the tank is full, water flows out through the overboard drainmast. When the control handle is placed in the DRAIN position and pulled, the potable water isdrained fromthe tank through the drain mast. The control handle must be returned to thevertical (closed) position or the serving door will not close.


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CSP A--013

MASTER

Galley Potable Water SystemFigure 21--20--1

WATER FILL PORT

FILL AND DRAINHANDLE

Potable WaterService and Drain Panel

DUSTCAP

FILLVALVE

P

GALLEY

SINK

CABIN FLOOR (REF)

FILTER

PX SW

HEATED DRAINMAST (FWD)

GALLEYVENT

DRAIN VALVE

GALLEYCONTROLPANNEL

COFFEE MAKERAND WATERDISPENSERWITH DRAIN PAN

ELECTRONICCONTROLUNIT

OVERFLOWPORT

GALLEYWATER TANK ASSEMBLY

TANK VENT

PRESSUREMANIFOLD

Mechanical connection.Fill line.Overflow line.Drain line.Pressure supply line.

LEGENDElectrical connection.


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Lavatory Water SystemFigure 21--20--2

FILTER

WASHBASIN

LAVATORY

HEATED DRAINMAST (AFT)

P

ECU

PRESSURE

RELIEFVENTMANIFOLD

WATER FILL PORT

FILL AND DRAINHANDLE

Potable Water Service and Drain Panel

FAUCETSWITCH

FILLVALVE

DRAINMANIFOLD

Electrical connection.Mechanical connection.Fill line.Overflow line.Drain line.Pressure supply line.

LEGEND

DUSTCAP

SHUTOFFVALVE

LAVATORYWATER TANK ASSEMBLY


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MASTER

Galley Control PanelFigure 21--20--3

WATER LEVEL Indicators (green)Come on to indicate water level in

corresponding tanks. Tank heaterswill not come on if E (empty)indicator is off. Will flash to indicatecontrol failure.

EMPTY Indicators (green)Go off to indicate correspondingtanks empty. Tank heaters andpumps, automatically deactivated.Will flash during warm--up sequence.

OVERHEAT Indicators (amber)Steady -- Comes on to indicate an overheat.

The heaters are automatically de--activated.Flashing -- Comes on to indicate a heatercontrol malfunction. The heaters areautomatically de--activated.

GALLEY POWER Switch (green)ON:

Activates heater system, Turns on level control system

OFF:De--activates heater system,

Turns off level sensing.

15 minute total warm--up sequence.NOTE

Water System Circuit BreakersUsed to protect the following:

Galley and lavatory pumps controlsystem.Galley and lavatory tank heaters.Galley and lavatory heating system.

LAVATORY POWER Switch (green)ON:

Activates heater system, Turns on level control system

OFF:De--activates heater system,

Turns off level sensing.


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CSP A--013

A. System Circuit Breakers

SYSTEM SUB--SYSTEM CB NAME BUS BAR CBPANEL

CBLOCATION

NOTES

Potable WasteSystem WASTESYSTEM DC SERVICEU4

Water SystemControl Logic

WATER CONT BUS

U5

Lavatory TankHeaters

WATER HTRSLINES AC UTIL BUS

D13--D14

Lavatory LineHeaters

WATER HTRS TANKS

2D15

Potable Water

GALLEYCONT & IND

DC SERVICE

System Galley GALLEY TANK

HTR AC UTIL BUS

Circuit

BreakersGALLEY LINEHTRS

2 are

located onthe Galle

LAVATORYCONT & IND

DC SERVICE Control

Panel

Lavatory LAVATORY

TANK HTR AC UTIL BUS

LAVATORYLINE HTRS

2


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Lavatory Waste System


CSP A--013

MASTER

1. LAVATORY WASTE SYSTEM

The lavatory waste systemstores waste material fromthe lavatory toilet and provides ameans of flushing the toilet bowl. The toilet assembly is self-contained and consists of aintegral seat and bowl assembly, holding tank, electric pump, timer, filter, flush handle and

service panel.

The holding tank holds the deodorant flushing solution and waste material until removed byground servicing personnel.

When the toilet flush handle is pushed, a timer energizes the electric pump for 10 seconds. The pump draws the flushing fluid fromthe tank, through a filter, and sends it out through thebowl assembly flush ring.

The systemis serviced by means of a lavatory service panel, located on the right side of theaft fuselage. When the service vehicle drain line is connected to the drain port, the T-handleis pulled then rotated to the left. This opens the holding tank drain valve, on the bottomof the tank, allowing the tank to empty through the drain line.

Once the holding tank is emptied, rinsing agent and flushing fluid are sent through thecharging port, flushing and cleaning the tank and lines. The T-handle is then turned to theright and pushed in to close the drain valve. The tank is then filled with precharge flushingfluid until the fluid level light on the service panel illuminates.

The toilet requires a precharge of 2.3 US gallons (8.7 liters) of flushing fluid.


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CSP A--013

Waste Disposal SystemFigure 21---30---1

WASTE DUMPCABLE T--HANDLERINSE

CONNECTION

DRAINCONNECTION

FILTERAND PUMP

VENT

MOTOR

TIMER

FLUSH

HANDLE

BOWL

ASSEMBLY

CHECK VALVE

DRAIN VALVE

LAVATORY

Waste ValveUsed to drain tank.

T HandleUsed to open drain valve.

Precharge PortUsed to flush tank andprecharge system.

Vent

Precharge Lamp

Indicates system is atprecharge level.Push light to test lamp.

NOTE

Access panel can not be closedunless waste valve and prechargeport covers are closed and lockedand drain valve T handle is locked.

Mechanical connection

Lavatory waste duct assembly

Ground rinse inlet tubing

LEGEND

HOLDING TANK

Lavatory Service Panel


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CSP A--013

MASTER

A. System Circuit Breakers

SYSTEM SUB--SYSTEM CB NAME BUS BAR CBPANEL

CBLOCATION

NOTES

Lavator Toilet TOILET AC SERVICE S2Waste WASTE SYST 2 U4System aste WATER CONT U5


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Bombardier CRJ 00-Water and Waste