TOILET SYSTEM - DESCRIPTION AND OPERATION

Transcription

1 TOILET SYSTEM - DESCRIPTION AND OPERATION 1. General The toilet system is provided for the convenience of the passengers and crew. It comprises three individual subsystems - FWD, MID and AFT. Each subsystem contains toilet units, lines, valves and service panels, and has a waste tank flushing facility. 1. General The toilet system is provided for the convenience of the crew. It comprises an individual system which contains toilet unit, lines, valves, service panel and has a waste tank flushing facility. 2. FED , , ,724, ,749 Component Location FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS DOOR ATA REF. Lavatory A 5MG1 6MG1 19MG MOTOR-FLUSH TIMER-TOILET SWITCH-FLUSH TOILET ASSY ) ) ) Lavatory H 5MG3 6MG3 19MG MOTOR-FLUSH TIMER-TOILET SWITCH-FLUSH TOILET ASSY ) ) ) Lavatory K 5MG4 6MG4 19MG MOTOR-FLUSH TIMER-TOILET SWITCH-FLUSH TOILET ASSY ) ) ) Page 1 of 14

2 FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS DOOR ATA REF. Lavatory D 16MG1 MOTOR-FLUSH 17MG1 TIMER-TOILET 19MG1 SWITCH-FLUSH TOILET ASSY Lavatory E 16MG2 MOTOR-FLUSH 17MG2 TIMER-TOILET 19MG2 SWITCH-FLUSH TOILET ASSY Lavatory F 16MG3 MOTOR-FLUSH 17MG3 TIMER-TOILET 19MG3 SWITCH-FLUSH TOILET ASSY Lavatory G 16MG4 MOTOR-FLUSH 17MG4 TIMER-TOILET 19MG4 SWITCH-FLUSH TOILET ASSY ) ) ) ) ) ) ) ) ) ) ) ) FED 724, ,749 Fig. 001) FED Fig. 002) FED , Fig. 003) Page 2 of 14

3 A. Each lavatory contains a toilet unit which consists basically of a waste tank with quick-disconnectable toilet bowl, separator, flush motor and timer, check valve, vent fitting, control cables and toilet drain valve. The single toilet units are secured with hold-down rods to the lavatory floor. The double toilet units are secured with bolts to hard points in the floor beam. The waste tanks are installed in a sealed structure as a corrosion preventive measure. A toilet shroud is installed in each lavatory to cover the waste tank. A. Each lavatory contains a toilet unit which consists basically of a waste tank with quick-disconnectable toilet bowl, separator, flush motor and timer, check valve, vent fitting, control cables and toilet drain valve. The single toilet units are secured with hold-down rods to the lavatory floor. A toilet shroud is installed in each lavatory to cover the waste tank. B. Leading Particulars, Toilet Unit Electrical power rating: 115/200 V, 400 Hz 3-Phase, 2.3 Amp/ Phase (max.) Operation current 1.0 Amp/Phase Flush Cycle: Delay between cycles: 10 sec. 6 sec. Flush pump capacity: 8 l (2 US gal.)/flush cycle Single toilet prime charge: Double toilet prime charge: Single toilet waste tank capacity: Double toilet waste tank capacity: 9.5 l max. (2.5 US gal.) 19 l max. (5 US gal.) 47 l (12.4 US gal).) nominal 51.0 l (13.4 US gal.) 100 l (26.5 US gal.) nominal 120 l (13.6 US gal.) Fig. 004) Page 3 of 14

4 3. Component Description A. Waste Tank The tank assembly consists of a carbon fiber tank with moldedin structural reinforcement and a top. B. Toilet Bowl The toilet bowl is made of polished stainless steel. A stainless steel flapper type separator assembly is hinged at the bottom of the bowl. The separator assembly provides an effective seal against tank odors and fluid splash from the tank into the bowl. The bowl is V-clamp mounted on top of the tank. C. Flush Motor The flush motor is mounted by a V-clamp on the tank with the filter and the pump submerged in the flushing fluid. D. Toilet Drain Valve A spring-loaded, cable-actuated drain valve seals the tank to prevent leakage of fluid and waste, and permits draining and cleaning of the toilet unit during ground servicing. The drain valve is encased in a cone shaped, collapsible boot of molded elastomer. E. Toilet Timer A timer, which controls the operation of the flush motor, is located on the top of the tank. F. Control Cable The control cable is connected with the toilet service panel and the toilet drain valve. 4. Operation FED 724, ,749 Fig. 005) FED Fig. 006) FED , Fig. 007) FED ,724, ,749 Fig. 008) Each toilet subsystem is equipped with a service panel. The service panels are equipped with the following: -Flush/Fill Connection Page 4 of 14

5 -Leakage Drain -Lavatory (Toilet) Drain Connection -Cable Control Handle (for toilet drain valve) Placards are installed on each service panel stating primingprecharge quantities, max. pressure fill and drain procedures. To close the service panel doors, the cable control handles and caps must be closed and locked in position. FED , The toilet system is equipped with a service panel. The service panel is equipped with the following: -Flush/Fill Connection -Leakage Drain -Lavatory (Toilet) Drain Connection -Cable Control Handle (for toilet drain valve) Placards are installed on the service panel stating primingprecharge quantities, max. pressure fill and drain procedures. To close the service panel door, the cable control handles and caps must be closed and locked in position. A. Flush Cycle The flush cycle is initiated by pressing the flush switch in the lavatory compartment. The pump, begins to pump the fluid through a spray channel, located under the upper rim of the toilet bowl, and a vigorous flushing of the toilet bowl takes place. The static filter basket prevents clogging of the pump. The automatic reset timer regulates the duration of the flush cycle. B. Waste Tank Draining and Rinsing During servicing, the flush/fill and drain connections are connected to the toilet service vehicle and the spring-loaded toilet drain valve is opened. After completion of drainage, the tank is rinsed by water with a max. pressure of 35 psi (2.42 bar). The drain valve of the toilet unit is closed again when the rinsing procedure is completed and the toilet tank is precharged with the prescribed amount of flush fluid. C. Waste Tank Ventilation The waste tank vent fitting is connected to the air extraction duct of the galley and lavatory ventilation system by a pipe. Extracted air is discharged overboard. Page 5 of 14

6 C. Toilet Bowl Ventilation The toilet bowl is connected to the air extraction duct of the galley and lavatory ventilation system by a pipe. Extracted air is discharged overboard. Page 6 of 14

7 FED 724, ,749 Figure 001 Figure 001. Component Location(Sheet 1) FED 724, ,749 Page 7 of 14

8 FED Figure 002 Figure 002. Component Location(Sheet 1) FED Page 8 of 14

9 FED , Figure 003 Figure 003. Component Location(Sheet 1) FED , Page 9 of 14

10 FED , , ,724, ,749 Figure 004 Figure 004. Toilet System - Block Diagram(Sheet 1) FED , , ,724, ,749 Page 10 of 14

11 FED 724, ,749 Figure 005 Figure 005. Electrical - Schematic(Sheet 1) FED 724, ,749 Page 11 of 14

12 FED Figure 006 Figure 006. Electrical - Schematic(Sheet 1) FED Page 12 of 14

13 FED , Figure 007 Figure 007. Electrical - Schematic(Sheet 1) FED , Page 13 of 14

14 FED ,724, ,749 Figure 008 Figure 008. Electrical - Schematic(Sheet 1) FED ,724, ,749 Page 14 of 14