燃油系统维护案例
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- 准备工作
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- 加油面板操作
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- 自动加油
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- 关闭面板
一、燃油系统维护
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燃油系统的主要作用是向飞机的发动机和APU提供燃油。燃油系统的主要勤务工作包括加油、排放沉淀水份等。
典型维护案例：加油操作。步骤如下：
1. 准备工作
演示视频：(点击图片进入)
视频解说词：The fuel tanker stops within the safety area. Obey the fuel safety and fire-fighting procedures. The fuel tanker ground cable is connected to the A/C, here at the L/G. Before starting the operation itself, the quality of the product may be verified. A sample of fuel is taken. At the end of a syringe, a yellow rubber indicator is fixed. The color of the rubber indicator does not change; it proves that the product is pure fuel. Remove the cap from the refuel/defuel coupling, it is retained by a cable. So the fuel hose can be pulled up to the wing, at the refueling station.
2. 加油面板操作
演示视频：(点击图片进入)
视频解说词：The refuel/defuel control panel 800VU is located in the RH fuselage ferry. As soon as the panel door is open, power supply is ON and all lights flash. Tests have to be performed. The TEST switch sets the lights, operates the filament test. All the lights on the panel come on and all the quantity indications show eights. When the TEST switch is set to High Level, the three High Level lights come on. The High Level sensors and the circuits are serviceable.
3. 自动加油
演示视频：(点击图片进入)
视频解说词：Then, make sure that the refuel valve selectors are in a normal and guarded position. For automatic refueling, set the required fuel quantity in kilograms (kg) on the preselector, by tripping the rocker switch to INC (increase) or DEC (decrease) as needed. Now, lift the guard from the MODE Selector, and put the selector to the REFUEL position. The pump on the fuel tanker pump unit is started. Monitor the fuel quantity indication increasing. All tanks are fuelled simultaneously. The actual indication increases together with the tank quantities. When a wing tank is full, the High Level light illuminates, the corresponding refuel valve is automatically closed. The center tank continues to fill. On the tanker the quantity delivered is given in liters. The fuel stops for approximately 5 seconds near the end of the refuel operation. This lets the computer calculate accurately where to put the last of the fuel. When refueling is completed, the computer illuminates the END light. The actual and preselected quantities agree within a 100 kg tolerance. Verify that the fuel is divided correctly between the tanks. The pump on the fuel tanker pump unit is stopped. Replace the MODE Selector to its guarded OFF position.
4. 关闭面板
演示视频：(点击图片进入)
视频解说词：The panel door is closed. The refuel/defuel coupling is disconnected. The hose is back to its wheel. And the ground cable is rewound. Automatic refuel operation is finished.