Vacuum pump operation procedures
真空泵操作规程
一、Purpose目的:
Ensure that users accurate operation, make the vacuum pump normal run./ 确保使用者准确操作使真空泵正常运行.
二、The composition of vacuum pump/真空泵的组成:
SOGEVAC Mechanical Pump (Model:SV300B)+Roots Pump(Model ZJ-300)/由SOGEVAC机械泵（型号：SV300B）+DVE罗茨真空泵（型号：ZJ-300）.
As shown in picture1 /如图1：
罗茨泵
Roots Pump
机械泵
Mechanical
Pump
Picture 1: The composition of vacuum pump and direction of impeller 真空泵组成及叶轮运转方向
三、operation procedures/操作规程：
1、The preparing work before start pump/泵启动前的准备工作:
1.1、Check the exhaust tube junction whether have loose./检查真空泵抽气管结合处有无松动现象
1.2、Check the power supply，and the three power is picked in the 380V power supply/检查工作电源将三项电源接在380V电源上；
1.3、Jog the motor and check whether the motor steering is same as the direction of arrow, (see picture1)then you can open the mechanical pump if the direction is right. 点动电机，试看电机转向(见图1是否按箭头方向运转，确认无误后合闸，开启机械泵；
1.4、Check the pump oil level：Confirm the lubricating oil level of oil cup, gear box and bearing box in 1/3 ~ 3/4 of oil window.：See picture
2./检查泵油，确认油杯、齿轮箱及轴承箱内的润滑油的油位在油窗的1/3~3/4内。
见图2
2、Pump starting and running/泵启动和运行
2.1 Start the mechanical pump firstly, Roots pump after the start (Roots pump isn’t allowed to take out atmosphere directly);/先启动机械泵，后启动罗茨泵(罗茨泵不准直接抽大气)；
2.2、Roots pump is allowed to start when the pressure inside the system of roots pump is 1330pa,or it will be started when you observe roots pump motor impeller stops./待系统内
的压力到达罗茨真空泵的许可进口压力后(1330Pa)，即可启动罗茨泵真空泵；或观察罗茨泵电机叶轮停止时方可开启罗茨泵。
3、Stop the pump/停泵
First stop the roots vacuum pump, then stop the mechanical pump when the roots vacuum pump stopped/先停罗茨真空泵，且停稳后再停前级机械泵；
四、maintaining/维护保养
1.0 Pay attention to check oil level: check the oil level come from oil cup, gear box, bearing housing, the ideal oiling level height is 3/4 of the oil window as well. The oil level will rise when the oil level of oil gear box and bearing housing excess 3/4 .The vacuum pump will make the noise when the oil level is too low to cause poor lubrication;/使用过程中注意油位检查：检查油杯、齿轮箱、轴承箱内的油位，理想的油位高度以油窗的3/4为好，齿轮箱和轴承箱的油位过量，使油位升高，油位太低造成润滑不良，有的可能发出噪音；
2.0．It is forbidden to open oil box for oil when roots vacuum pump is running. Otherwise it will have serious damage to the pump.在罗茨真空泵运行时严禁拆开油箱加油，否则会对泵有严重的损害。
3.0 The vacuum pump should not have irregular abnormal vibration during it is running. ./注意运转中不应有不规则的异常振动；
4.0 Such as found these status, such as :the motor temperature rise too high, abnormal sound and vibration, and so on, the vacuum pump should be stopped. And check the reason, troubleshooting./如发现在运转中有电机温升过高，声音异常，振动大等情况时，应立即停机检查原因，排除故障。
5.0 Check whether the gear box lubricating oil, the front cover bearing box lubricating oil is bad .And replace lubricating oil every 3 months./检查齿轮箱内润滑油、前盖轴承箱内润滑油是否变质。
并3月更换1次润滑油。
五、Attachment picture 2/附件：图2
HIG 3/4
Low 1/3
Oil level height of the oil window and the location of oil full/oil drain/油窗油位高度以及加油/放油位置。