求翻译：待罐内气体全部排尽，把罐门左后方的密封圈充气阀门关闭，排气阀门打开，把密封圈内的气排尽，按下SB1按钮，电磁阀YA2控制保险汽缸将保险杆退回，打开罐门（如果气体排尽，门无法打开，请启动真空泵对密封圈抽空，再开门）。如果罐内气体未排尽按下SB1按钮，由于电接点压力表（在电箱外左上方中间）未复零，电磁阀YA2不能动作保险杆5不能退回，罐门仍被卡住，不能打开，罐内气体排尽后，保险杆自动退回。是什么意思？

To be tank of gas all drained to the left rear of the tank door seal inflation valve to close, the exhaust valve is opened, drained the gas in the ring the sb1 button is pressed, the solenoid valve ya2 control insurance cylinder of the insurance Rod returned to open the tank door (if the gas is drai

All the gas in the tank, drain the tank to the left rear door seal valve closed, the exhaust valve opens and the seal of the air exhaust, press the 1 button SB YA 2 solenoid valves, control rod insurance cylinder will be returning to open the tank door (if the gas exhaust, the door will not open, pl

Tank full of gas exhaust, left rear door seals gas tank valve closed, exhaust valve opens, gas exhaust seal ring made, press the buttons SB1, YA2 electromagnetic valve control insurance return cylinder would bumper, door open tank (if gas exhaust%2