of 7
8/20/2019 Bombardier CRJ 00-Water and Waste
1/14
21--00--1Vol. 1
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
8/20/2019 Bombardier CRJ 00-Water and Waste
2/14
REV 56, J an 31/03
Vol. 1 21--00--2WATER AND WASTE SYSTEMS
Table of Contents
MASTERFlightCrew Operating Manual
CSP A--013
THIS PAGE INTENTIONALLY LEFT BLANK
8/20/2019 Bombardier CRJ 00-Water and Waste
3/14
21--10--1Vol. 1
REV 56, J an 31/03WATER AND WASTE SYSTEMS
Introduction
FlightCrew Operating Manual
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.
8/20/2019 Bombardier CRJ 00-Water and Waste
4/14
REV 56, J an 31/03
Vol. 1 21--10--2WATER AND WASTE SYSTEMS
Introduction
MASTERFlightCrew Operating Manual
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
8/20/2019 Bombardier CRJ 00-Water and Waste
5/14
21--20--1Vol. 1
REV 56, J an 31/03WATER AND WASTE SYSTEMS
Potable Water System
FlightCrew Operating Manual
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.
8/20/2019 Bombardier CRJ 00-Water and Waste
6/14
REV 56, J an 31/03
Vol. 1 21--20--2WATER AND WASTE SYSTEMS
Potable Water System
MASTERFlightCrew Operating Manual
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.
8/20/2019 Bombardier CRJ 00-Water and Waste
7/14
21--20--3Vol. 1
REV 56, J an 31/03WATER AND WASTE SYSTEMS
Potable Water System
FlightCrew Operating Manual
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.
8/20/2019 Bombardier CRJ 00-Water and Waste
8/14
REV 56, J an 31/03
Vol. 1 21--20--4WATER AND WASTE SYSTEMS
Potable Water System
MASTERFlightCrew Operating Manual
CSP A--013
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
8/20/2019 Bombardier CRJ 00-Water and Waste
9/14
21--20--5Vol. 1
REV 56, J an 31/03WATER AND WASTE SYSTEMS
Potable Water System
FlightCrew Operating Manual
CSP A--013
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.
8/20/2019 Bombardier CRJ 00-Water and Waste
10/14
REV 56, J an 31/03
Vol. 1 21--20--6WATER AND WASTE SYSTEMS
Potable Water System
MASTERFlightCrew Operating Manual
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
8/20/2019 Bombardier CRJ 00-Water and Waste
11/14
21--30--1Vol. 1
REV 56, J an 31/03WATER AND WASTE SYSTEMS
Lavatory Waste System
FlightCrew Operating Manual
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.
8/20/2019 Bombardier CRJ 00-Water and Waste
12/14
REV 56, J an 31/03
Vol. 1 21--30--2WATER AND WASTE SYSTEMS
Lavatory Waste System
MASTERFlightCrew Operating Manual
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
8/20/2019 Bombardier CRJ 00-Water and Waste
13/14
21--30--3Vol. 1
REV 56, J an 31/03WATER AND WASTE SYSTEMS
Lavatory Waste System
FlightCrew Operating Manual
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
8/20/2019 Bombardier CRJ 00-Water and Waste
14/14
REV 56, J an 31/03
Vol. 1 21--30--4WATER AND WASTE SYSTEMS
Lavatory Waste System
MASTERFlightCrew Operating Manual
THIS PAGE INTENTIONALLY LEFT BLANK