The correct installation, use and maintenance of the motor, can avoid accident and extend the using life.

一 Inspection

  1,Check the nameplate data Carefully, and confirm the motor is correspond with the requirements.

  2, Using the 500V megohm to measuring the motor insulation resistance between winding and shell, insulation resistance should be larger than 0.5MΩ

二 Installation

  1，Motor usually works in the clean and dry place, the surrounding should be well-ventilated, and the highest ambient air temperature does not exceed 40 ℃, the minimum temperature not lower than -15 ℃, and motor should be prevent the strong heat radiation

  2, Then according to wiring diagram to connect the power wires, and connection should be tight. The motor with cables leads and electrical wires, the power lines can be directly connected and joint sealing should be insulated.

  3, when the power line, phase sequence and electrical rough wiring connection correspond to the mark, the motor should rotate on clockwise from the axis end. When need to change the rotation, change the location of 2 power wires.

  4，YD series motors using change the out wires to control the speed of change. To ensure the reliability of the multi-speed motor ,please pay attention to operation and operation of control devices .When change high-speed to low speed, must cut off the power and at the same time cut off 2Y wires, in order to avoid short circuit in low-speed. When change high-speed to low speed, connect low speed power after the motor stop running in order to reduce the impact of motor and load. When change motor speed, please pay attention motor’s rotation direction.

  5，Motor can  be connected to load machines by shaft coupling, gears and belts .Motors which 2 pole powers more than 4KW and 4 pole power more than 30kw should not be connected by a belt, the second axis of biaxial motor can only be used by shaft coupling. Space between couplings, belts and motor axis should be appropriate, when installing, please don’t use a heavy hammer to pound. When using coupling, the center of the motor shaft and center of the load mechanical axis should coincide.

Please keep 1 ~ 3mm gap between axial couplings. When using moving belt, the center of the motor shaft should be parallel to the center of the load mechanical axis, the centerline of the belt should be vertical with the axis centerline.

三，Earth

  Motor earth must be reliable, method and grounding resistance should be consistent with the provisions of the management of electrical safety such as “industrial and earthing of electrical installations in civil design specification" "power plant design technical specifications", and grounding resistance should be less than 4Ω

四，Start

  1，When switch , the motor should start up to normal speed and smooth operation, or cut off power immediately, inspect and expel the faults.

  2，After start-up ,observe the motor gear, load machinery, voltage meter and ammeter. If any anomalies happens, should stop the motor immediately

  3，Motor no-load start-up are generally not more than four times ,when run down after hot start-up , consecutive start not more than 2 times, or cause motor burned.

  4，According to grid capacity, load size and motor power and so on, choose a reasonable start-up mode, the larger power motor should be taken using a triangular or step-down power starting.

五、Operation

  1 The deviation between power voltage and rated voltage should not exceed ± 5%, the unbalance of three-phase voltage should not exceed 1.5%.

  2, Motor operating current shall not exceed the rated nameplate current, unbalance of three-phase current should not exceed 80%, or result in motor burned。

  3，Temperature of motor casing surface should not exceed 80 ℃, the temperature of bearings should not exceed 95 ℃.

  4，Motor should be kept clean, dry, well-ventilated, the air access lane should remain open.

  5，When motor running ,any smoke appeared, severe vibration, abnormal noise, special smell, decreased speed or load equipment failure or personal electric shock, please cut off power immediately.

六、Bearing Lubrication

  1，Motor bearing lubrication should be good. In general, after 3000-5000 hours, please stop motor and add or replaced new grease. The grease grade is ZL - 3 lithium base grease.

  2，When the motor storage more than two years ,before use of the motor, please inspect the motor bearing lubrication ,if necessary, please add or replace the grease.

  3, The motor which height of the motor center is equal to or below 132 have sealed bearing; The motor which height of the motor center is equal to or more than 160 have non-sealed bearing .Motors using sealed bearings don’t no need to replace the grease. Non-sealed bearings should be replaced clean grease regularly. Add grease should be moderate; generally fill 1/3-1/2 of bearing housing. When motor have a injection devices, add lubrication 3-4 using the gun. Before adding grease, open the hole or cover at the bottom of bearing caps, and then close the hole or cover after motor running 20 minutes. When open the hole or cover, please cut off the power.

七、Transport and storage

  Motor during transport should not be damp, not stretching axis, and other parts are not damaged. Storage places should be kept clean, dry, ventilated, non-corrosive gases and avoid environment temperature dramatic changes.

八、Quality Assurance

  1,When user proper use and storage in accordance the user manual ,and the motor from the date of purchase within one year or from the date of self-produced no more than 1 year, motors does not work due to manufacturing defects or quality problems, we responsible for repairing, exchanging and returning.

  2, When motor failure due to user-self, our company can provide maintenance services, and take a certain amount of costs normally include the following: motor burned due to motor voltage exceeding than rated voltage ± 5% or overload operation; a phase or two-phase motor stator windings burned due to three-phase power supply failure; equipment accidents caused by improper installation,; user un-authorization to demolish and repair motors.

九、Maintenance Repair

  Motor repair should pay attention to environmental protection, make to pollution-free. Please don’t burn to remove the motor coil. If motor use more than one year or longer, when maintenance, pay attention to the motor end cover oil seal, seal ring, sealing ring of terminal box seat, and lid whether are cracking, deformation, wear and tear, when they can not be sealed to meet the requirements , please replace the parts timely.