1、八、主要故障及修理方法 - 5九、检查及修理统计表 61. General - 72. Preparation before installation - 73. Installation of Motor - 74. Trial Run - 85. Service, Maintenance and Storage 96. Guaranteed period - 107. Declare of after Service 108. Main troubles and trouble shooting 119. STATISTICS FOR INSPECTION AND REPAIR 12一、
2、概述 本系列电动机为全封闭、自扇冷式、三相笼式异步电动机，适用于驱动各种机械，如金属切削机床、泵类、通风机、分离器、液压机械及其它辅助设备。二、 安装前的准备1.详细核对铭牌上所载的各项数据，如额定功率、电压、频率、转速等是否与实际需要相符。2.仔细检查各零部件的装配是否良好，紧固件是否松动，并用手转动转子，检查有无相擦现象。3.用500伏兆欧表测量各绕组之间及绕组对地的绝缘电阻，使用过程中测得的绝缘电阻至少不低于1M,否则应进行干燥处理。三、 安装1.立式电动机在使用中不允许有任何的轴向负荷。2.安装时，应保证电动机有良好的通风条件，风罩进风端留有的空间不得小于下表的规定。机座型号63132
3、160180200355空间（毫米）2530503.接线盒的填料函方向，可在轴伸方向以外的其他三个方向进行调换，当需要重新确定接线盒填料函的方向时，可取下接线盒的四个螺钉，将接线盒移位。4.将填料函内的橡皮圈穿孔后进行接线，并将压紧螺母拧紧，达到防水、防震的要求。5.安装完毕，应检查各紧固件、联接件是否可靠，用手转动装置应轻松无相擦。四、 运转1. 本系列电动机共有6根接线头，分别标以U1、V1、W1、U2、V2、W2，电动机引出线接线方法请按接线盒盖上标明的方法连接。2. 电动机在实际负载运转中应继续观察其起动情况，运转时声音是否正常，以及实际负载电流是否超过铭牌上的规定值，在运转0.51小
4、时后，应停车检查电动机各机械连接部分有无松动，轴承有无过热及漏油，定转子有无相擦等。如无异常情况发现，即做正式使用。 3.电动机应满压起动，如电源容量不足不能满压起动时，则可采用降压起动。电动机的起动转矩降低与电压降低的平方成正比，降压起动一般采用Y-起动补偿器。五、 维护及检修1.电动机应按铭牌所载的额定值使用，切莫过载，并应注意清洁和检查，防止受潮或异物进入机体内部。2.电动机运转时，应经常记录有关仪表及温度计的读数，运行期间的检修情况。同时故障处理亦应做好记录，以供今后维护及检修作参考。3.除H80132电动机使用封闭轴承不用再加润滑脂外，H160以上电动机均设有轴承润滑脂注入及排除装置
5、。平时需要时，可取下电动机前后的注油螺塞，用油枪将润滑脂注入。4. 轴承使用的润滑脂为津脂HP-R，一般工作六个月左右，应更换润滑脂一次，如发现油脂色泽暗，上面有水珠或灰尘聚集，油脂硬化变质或轴承发热等现象，应即更换新油脂。更换油脂时，应将陈脂清除，并将轴承及轴承盖洗净，然后加入新润滑脂，所加的油脂量以加至轴承塞的2/3为宜。5.为了消除电动机的事故隐患，保证运行质量，电动机应定期进行检修，一般三个月小检修一次，每年大检修一次，小检修清除机体外的积尘、污垢，应保持接线板清洁，以免积尘受潮，产生爬电，检查电动机线圈的绝缘电阻、接头、接地线、各紧固零件及传动机构的连接等有无松动，消除所发现的缺陷。
6、大检修时，应将电动机拆开，除进行小检修的项目外，要注意线圈，检查线圈是否完好，端部绑扎有否损坏，清洁机体内外，检查电动机的轴承磨损情况及更新润滑脂。六、 保证期在用户按照使用维护说明书的规定使用和存放电动机的情况下，我公司保证电动机使用的一年内（自制造厂起运的日期不超过二年）能良好的运行。如在此规定的时间内，电动机因制造质量不良而发生损坏或不正常工作时，我公司无偿地为用户修理，更换零件或电机。七、 服务声明1 电动机匝间、相间短路属于质量问题，但因超负荷运行导致电动机绝缘破坏造成的短路问题，则不属于制造质量问题。2 电动机的擦心属于质量问题，但因安装不同心或过负荷运行导致轴承损坏引起的擦心则不
7、属于制造质量问题。3 电动机断轴或因安装配套使用不合理导致的电机故障或部件损坏不属于制造质量问题。4 以上不属于制造质量问题的，我公司可根据用户要求予以有偿服务。如经用户判断系我公司产品制造质量问题，请于我公司售后服务部门联系，公司将在最短时间内给用户最及时的服务。八、主要故障及修理方法故 障可能原因修理方法起动时不转有响声或振动一相断路查出断电处并修理转动时有响声且电机过热绕组短路修理绕组起动后转速低（1）相绕组首端末端接错 （2）电压降低（1）找出每相首端末端后正确连接（2）检查电源电压绝缘电阻较低绕组脏污或受潮清理电机干燥绕组绕组温升过高电机过载减轻负载轴承过热（1）电动机与转动机械连接
8、偏心，皮带涨力过大（2）轴承润滑脂过多或过少（3）轴承损坏（1）检查同心（2）检查润滑脂储量轴承响（1）轴承磨损（2）轴承脏污，润滑脂干少（1）换轴承（2）换新润滑脂振动超标（1）基础刚度不够（2）电动机轴与传动机械轴不同心（1）重新安装（2）检查同心九、检查及修理统计表日期检修内容故障发生原因修理措施承修部门签署1. GeneralThe motors of this series are totally enclosed self-fan cooled, three-phase squirrel cage induction ones, which are suitable for dri
9、ving all kinds of machines, such as metal cutting machine tools, pumps, ventilators, separators, hydraulic machines and other accessory equipments.2. Preparation before installation2.1 Check all the data given on the nameplate, such as rated power, voltage, frequency and speed, if they are consisten
10、t with the actual demands.2.2 Inspect carefully if the assemblies of all the parts are in condition and if the fixing parts are loose. Turn the rotor by hand to observe if there is any clogging.2.3 Measure the insulation resistance between the phase windings and between windings to the ground with a
11、 500V meager. During operation, the measured value should not be less than 1M otherwise it must be dried.3. Installation of Motor 3.1 Any axial load will be not allowed in a vertical motor during operation.3.2 The motor must be installed in a well-ventilating condition, and the clearance of the air
12、intaking side of fan hood must not be less than the specified value on following table.Frame No. Clearance（mm）3.3 The stuffing box of the terminal box can be fixed in three directions except of the shaft extension side. If the direction of the stuffing box needs changed, the terminal box can be move
13、d by removing the four symmetrical bolts on the box.3.4 After punching the rubber pad in the stuffing box, the cable may be connected. And the packing nuts must be screwed up in accord with demands of waterproof and shockproof.3.5 After installation, check all the fixing and joint parts, see if they
14、 are reliable, and the rotor must rotate freely without clogging then it is turned by hand.4. Trial Run 4.1 There are totally six terminals on each motor of this series, which are marked respectively U1, V1, W1, U2, V2, and W2 Lead wires must be connected according to the connecting method marked on
15、 the connecting plate on the cover of the terminal box.4.2 During actual operation on load, still observe if starting condition or sound is normal, and if the load current goes beyond the rated value, when the machine has run for 0.51 hour, shut down and observe if the joint parts of the machine hav
16、e loose, or the bearings overheated or the oil leaked out, and the touching between the stator and the rotor occurred, if no such phenomenon is found, the motor can be put into practical operation.4.3 The motor should be started with full voltage, if the capacity is incapable of starting it with ful
17、l voltage, step-down starting can be adopted. The decrease in starting torque is proportional to the square of the voltage drop. Y- starting compensator is normally used for the step-down starting.5. Service, Maintenance and Storage5.1 The motor must be operated according to the ratings on the namep
18、late and never be overloaded. Cleaning and inspection should be cared and it must be prevented from moistening and from foreign matters entering.5.2 The readings of relevant instruments, thermometer and maintenance situation should be always noted during operation. The treatments of troubles should
19、be also kept as a reference to the service and maintenance in future days to come.5.3 Motor H80132 with sealed bearings need not to grease, motors whose frames dimensions are greater than H160 are equipped with grease filling and draining devices. You can remove the front and rear filling screw plug
20、s to fill grease with a grease gun if it is necessary.5.4 The bearings should be filled with lithium base grease HP-R, which must be refreshed about every six months. If it is found that the color of grease dark, water drops or dust gathered on the grease, the grease hardened or deteriorated, or the
21、 bearing heated up etc., the grease must be refreshed, when refreshing, the used grease must be cleaned away, the bearing and its cover must be filled till its quantity reaches 2/3 of the bearing plugs.5.5 Periodical inspection should be taken, in order to avert the possibility of accident and ensur
22、e normal operation. Generally maintenance should be done every three months and an overhaul every year. For a maintenance, the dust and dirt must be cleaned away form the external body, and the connecting plate should be kept clean to avoid dampness due to gathered dust, because damped connecting pl
23、ate often causes creeping, detect the connections of the insulation resistance of windings, check the connection of terminals and grounding cables, and see if the joints of the fixing parts and drive mechanism have loosed. Every found fault must be eliminated. For an overhaul, the motor must be disa
24、ssembled. Besides the items which must be done in the maintenance, you should notice the windings if they are in condition, and if the end windings are damaged, you should also clean the inside and outside of the body, observe if the motors bearing are worn out, and refresh the grease as required.6.
25、 Guaranteed period It is guaranteed by the manufacturer that the motor will perform in a good running condition , for a period of one year （within two years from the date of shipment）, on the basis that the customer operate and store the motor according to the maintenance and operation instructions,
26、 any defects owing to poor quality of the workmanship by the manufacturer, it is will be repaired and changed of parts or motor by the manufacturer.7. Declare of after Service7.1 The short circuit between circles or phases is the quality problem, but if it is because of overload, it will be not the
27、quality problem.7.2 The scrape between rotor and stator is the quality problem if the motor is with no load, but if it is because of wrong fixing or overload, it will be not the quality problem.7.3 The break of the shaft or the other problem because of wrong fixing or overload is not the quality pro
28、blem.7.4 When the problem is not the quality problem, we can provide compensable service if the customer need. If you think the problem is the quality problem, please contact with us, and we will give you a satisfied reply quickly.8. Main troubles and trouble shootingTrouble Cause RemedyFails to sta
29、rt with noise or vibrationOne phase line open circuited Find out the broken points and connect wellRotates with noise and overheatedWinding short circuitedRepair the windingSpeed is very low after starting 1. Beginning and end terminals of phase winding are misconnected2. Applied voltage is too low1. Find out the beginning and end terminals of every phase and connect them correctly 2. Check main voltage Insulation resistance reduces Winding is dirty or damped Clean motor and dry the windingThe
