DOC AIRBUS | AMM A320FSEAL DRAIN SYSTEM - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
1. General
The seal drain system collects hydraulic fluid from the seal drains of specified components of the three hydraulic systems. The air relief valves of the reservoirs are also connected to the seal drain system. This is to collect any fluid which comes out of a reservoir if the pressure in the reservoir is too high. The fluid from a given component goes through a system of pipes to one of the two collector tanks. The tanks are the FWD collector tank and the AFT collector tank.
The system also gives some protection if the reservoirs are overfilled. However, if there is an excessive flow of fluid, or if the collector tank is full, the fluid comes out of the overflow pipe. In this case the fluid is not contained and goes into the hydraulic compartment.
** ON A/C NOT FOR ALL The seal drain system collects hydraulic fluid from the seal drains of specified components of the three hydraulic systems. The air relief valves of the reservoirs are also connected to the seal drain system. This is to collect any fluid which comes out of a reservoir if the pressure in the reservoir is too high. The fluid from a given component goes through a system of pipes to one of the two collector tanks. The tanks are the FWD collector tank and the AFT collector tank.
The system also gives some protection if the reservoirs are overfilled. However, if there is an excessive flow of fluid, or if the collector tank is full, the fluid comes out of the overflow pipe. In this case the fluid is not contained and goes into the hydraulic compartment.
2. Component Location
** ON A/C NOT FOR ALL | ------------------------------------------------------------------------------- |
| FIN I FUNCTIONAL DESIGNATION I PANELIZONEIACCESS I ATA |
| I I I IDOOR I REF. |
| ------------------------------------------------------------------------------- |
| TANK, COLLECTOR 196 196BB 29-17-41 |
| TANK, COLLECTOR 148 29-17-41 |
3. System Description
Seal Drain System - Schematic ** ON A/C NOT FOR ALL
Seal Drain System - Schematic ** ON A/C NOT FOR ALL
The seal drain system has two plastic collector tanks (FWD and AFT) with related pipes and hoses. Each collector tank has a capacity of 0.75 l (0.1981 USgal) . Remove the hydraulic fluid from the collector tanks at regular times. The collector tanks are attached to the structure with quick release clamps to make them easier to drain.
The FWD collector tank is in the Yellow hydraulic compartment and is attached between FR40 and FR41. The components which drain into the FWD collector tank are:
The AFT collector tank is in the main hydraulic compartment. It is attached to the right side of the keelbeam, forward of FR46. The components which drain into it are:
Seal Drain System - Schematic ** ON A/C NOT FOR ALL Seal Drain System - Schematic ** ON A/C NOT FOR ALL The FWD collector tank is in the Yellow hydraulic compartment and is attached between FR40 and FR41. The components which drain into the FWD collector tank are:
- Electric Pump, Blue System
- Electric Pump, Yellow System
- Power Control Unit (PCU), Slats
- Air Relief Valve, Green System Reservoir
- Air Relief Valve, Yellow System Reservoir.
The AFT collector tank is in the main hydraulic compartment. It is attached to the right side of the keelbeam, forward of FR46. The components which drain into it are:
- Power Control Unit (PCU), Flaps
- Power Transfer Unit (PTU)
- Constant Speed Motor/Generator (CSM/G)
- Air Relief Valve, Blue System Reservoir.