imbalance is less than 3% (if the electrical voltage imbalance needs to be equipped with a regulator, so as to facilitate
the operation of the air compressor).
Note: when the power phase sequence is inconsistent, the control panel of the machine will prompt a warning,
and the machine shall not be started. To disconnect the power supply, change the sequence of any two items of the
three-phase power cable.
2.开机前先打开机器后面面板，手动转动主机是否顺滑，有无卡机现象。无问题开机试车，
并观察油分桶内油位是否在标示线内。
Before starting the machine, open the back panel of the machine, and manually turn the host to see whether it
is smooth or not. If there is no problem, start the test and observe whether the oil level in the oil sub barrel is within
the marked line.
3.机器正常运行后，通过设备显示屏观察设备运作情况，并检查有无报警信息。如有异常
声音、震动、泄露等情况立即停车，并对机器进行检修。
After the machine runs normally, observe the operation of the equipment through the display screen, and check
whether there is alarm information. In case of abnormal sound, vibration and leakage, stop the machine immediately
and repair it.
4.保养检查-开机顺序 Maintenance check - startup sequence
1、先开冷冻式干燥机，再开空压机。
Turn on the freeze dryer first, then the air compressor.
2、关机时先关空压机，再关冷冻式干燥机，防止未除水的压缩空气污染激光头。
Turn on the freeze dryer first, then the air compressor.
5.日常开机前检查 Daily check before startup
1、断电情况下打开四周门板，检查机器内部是否有大量灰尘，防尘网是否灰尘多（建议一
周检查吹扫一次），用气枪吹扫干净机内的灰尘，然后关好门。
In case of power failure, open the door panels around the machine, check whether there is a lot of dust
inside the machine, whether the dust filter is too dusty (it is recommended to check and purge once a week),
clean the dust inside the machine with an air gun, and then close the door.
2、检查供电电源及电源线有无脱落松动或表皮是否损伤，确认无误方可送电开机。
Check whether the power supply and power cable are loose or whether the skin is damaged. Then power
on the device.
3、开机前检查所有机箱门板是否关闭好，周边连接设备是否在预备使用状态。
Before starting the machine, check whether all the chassis door panels are closed properly and whether
the peripheral connected devices are in the state of ready use.
4、检查液晶显示屏上有无报警信息，若有应根据信息反馈处理完后方可送电开机。
Check whether there is alarm information on the LCD screen. If there is alarm information, it can be
powered on after processing according to the information feedback.
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