This maintenance manual will introduce how to use the product correctly. Before installation, wiring, debugging, operation, and maintenance, please read this operation and maintenance manual carefully, and use the product after understanding the safety performance of the product. If you have any questions after reading this manual, please contact our after-sales service in time, and our professional staff will serve you wholeheartedly.

The company is committed to continuous product improvement and perfection, so it reserves the right to modify the contents of this operation and maintenance manual, subject to change without notice.

Safety Precautions

• 1. The lifting ring must be used for lifting during transportation, and the rated load of the spreader must be greater than the weight of the motor, otherwise, it may cause injury to the person and the motor.
• 2. The motor is forbidden to be used in places with flammable, explosive gas, steam, and corrosive gas.
• 3. Please install, wire, and debug in strict accordance with the requirements of this manual.
• 4. Confirm the direction of motor rotation before running.
• 5. The power supply must be cut off during installation and wiring.

I. Overview

The motor is excited by rare earth neodymium iron boron permanent magnet materials and is supplied with the permanent magnet special frequency converter. It has the characteristics of large starting torque, wide speed range, compact structure, small size, lightweight, low noise, high power factor, and high efficiency. It is an ideal power choice for high-efficiency and energy-saving air compressors. The technical requirements and parameters are as follows:

Rated speed (r/min)	3000,3600,1000
Frequency（Hz）	150,200,240
Power range（kW）	7.5～200
Cooling type	IC411(Self-fan cooling),IC416

1. The motor can operate normally under the following conditions:

1.1 The ambient temperature does not exceed 40℃;

1.2 Relative humidity ≤90%;

1.3 The altitude does not exceed 1000m.

2. The rated voltage of the motor is 380V, also according to user requirements.

3. The reference work system of the motor: S1.

4. Insulation grade: F grade.

5. Protection level: IP55.

6. Motor structure and installation type: B3, B35.

7. The motor outlet is located on the top of the base, or it can be located on the right or left of the base according to user requirements.

8. Motor service factor: 1.15, 1.2 (or as per technical agreement).

II. Inspection

1. Before use, please carefully check the appearance of the motor for damage during transportation, and check whether the nameplate parameters (power, voltage, speed, etc.) are consistent with the order.

2. Check whether the fasteners of the motor are loose.

3. Turn the motor shaft by hand to see if there is any jamming.

III. Wiring, debugging

1. Be sure to make electrical connections with the power supply cut-off.

2. Refer to the inverter instruction manual, enter the motor nameplate parameters into the inverter, and check whether the parameters set by the inverter match the motor nameplate parameters and meet the requirements for use. Then perform the inverter self-learning in accordance with the requirements of the inverter operating instructions, and the motor can only be run after the inverter self-learning is completed.

3. Connect the three lead wires of the motor to the output terminal of the inverter power supply. The motor leads U, V, and W correspond to U, V, and W on the output terminal of the inverter power supply respectively. Jog to confirm the direction of motor rotation

4. Properly ground the grounding bolt of the motor and the other grounding terminals of the inverter or compressor.

5. After the wiring is completed, the residual metal in the wire box should be removed, and all the bolts and nuts of the terminals should be tightened.

6. Debug and run the motor in accordance with the instruction manual of the inverter.

Note: The inverter is prohibited from self-learning in the thermal state of the motor

IV. Operation and use

1. Before the motor is energized, confirm the rotation direction of the motor, and check whether the mechanical installation and electrical connection are safe and reliable.

2. If abnormal noise or vibration is found in the motor during operation, please stop the operation immediately and cut off the power supply. Check the motor and compressor, and put it into operation again after troubleshooting.

3. If the temperature rise of the motor is found to be abnormal during operation, please stop the motor and cut off the power immediately, check the motor and the compressor, and then put it into use again after troubleshooting.

V. Maintenance

1. Please carry out regular maintenance of the bearing strictly in accordance with the bearing lubrication indication plate. The motor should be refilled with grease immediately after running for about 2000 hours, and the grease brand must be carefully identified before refilling. When the bearing is found to be overheated or the grease is degraded during operation, it should be replaced in time. The old grease should be removed when replacing, and the bearing and the inner and outer cover oil chambers of the bearing should be cleaned with gasoline, and then clean grease of the same brand should be added. Motor with a speed of 3000rpm and above, the amount of refueling: the bearing cavity is filled, the amount of grease added to the oil chamber of the bearing inner cover accounts for 1/2 of the oil chamber, the remaining speed motor refueling amount: the bearing inner cavity is filled, and the bearing inner cover oil chamber is filled The amount of grease occupies 2/3 of the oil chamber.

2. When replacing the bearing, a special bearing disassembly tool must be used to pull the bearing from the motor shaft, and the disassembly force must not be directly applied to the motor shaft. When installing a new bearing, the hot sleeve method should be used to install the bearing. After the bearing is heated to 90°C, the bearing sleeve should be placed on the bearing position on the shaft.

VI. Storage

The motor should be stored in a ventilated and dry place without corrosive gas.

VII. Disclaimer

The company is not responsible for maintenance and compensation for motor failures that occur in the following situations.

1. The long-term severe overload operation of the motor causes the winding to become heated and burned.

2. The product is not installed correctly, such as severely knocking on the motor spindle and the flange surface of the machine cover to cause deformation of the parts.

3. The user does not use and store the motor correctly according to the provisions of this manual, and the failure and loss are caused by human factors.

Qingdao Enneng Motor Co., Ltd.

www.enmotor.com

Tel:+86 532 66000559