久久国产欧美一区二区丨国产98色在线 | 国产丨吃奶呻吟打开双腿做受动态图丨国产女人18毛片水真多1kt∧丨国产一区二区不卡视频丨大尺度av丨国产免费爽爽视频在线观看丨手机看片aⅴ永久免费无码丨国产免费又色又爽又黄女性同恋丨夜夜看av丨99精品国产在热久久无码丨日本少妇xxxx软件丨酒店大战丝袜高跟鞋人妻丨黄色片在线免费看丨91草视频丨亚洲欧美国产一区二区丨真实强推精品半推半就丨免费人成视频在线视频网站丨heyzo亚洲丨草草影院国产

Operation steps of the accumulator nitrogen filling vehicle:

The first step: first open the control box three-wire power supply (380V);

Step 2: Open the unloading valve (position reference manual) on the hydraulic module of the pump station until the system oil pressure drops to 0 MPa (ie, the pressure gauge shows 0);

Step 3: Open the top cover of the accumulator, then unscrew the black cap inside, and rotate the handle of the nitrogen-filled special tool to the maximum position (counterclockwise to the maximum), connect the accumulator, and press the special tool handle. Rotate clockwise. When you hear the sound coming out of the gas, observe the pressure gauge on the tool. The pressure display value is the pressure of the accumulator. At this time, turn it counterclockwise to the maximum and remove the special tool.

When the pressure is less than 5 MPa, it is necessary to flush the accumulator. The above is the detection process.