WESTINGHOUSE Three Phase Induction Motors

Key function verification: Manually rotate the motor shaft, rotating flexibly without any jamming or abnormal noise; Check that the wiring terminals of auxiliary equipment such as heaters, temperature detectors (PT100/PTC), and vibration sensors are intact and the parameters are compliant.

2. Exception handling

If any transportation damage is found (such as deformation of the frame or bending of the shaft), immediately take photos and record them, synchronize with the carrier and manufacturer, and initiate the claim process.

If the parameters do not match the order or the attachments are missing, please contact the manufacturer in a timely manner to coordinate replacement or supplementation. Unauthorized modification and use are prohibited.

（2） Storage Management Standards

1. Storage environment requirements

The storage site should be clean, dry, and well ventilated, with a temperature controlled between 10-50 ℃ and a relative humidity of ≤ 60%. It should be kept away from heat sources, cold sources, or corrosion sources such as boilers, cold storage, and chemical warehouses.

The motor should be placed on a wooden tray or metal bracket, at least 10cm above the ground, to avoid direct contact with the ground and moisture; Reserve a passage of ≥ 50cm around for ventilation and inspection.

Do not stack heavy or sharp objects in the storage area to avoid colliding with the motor; Avoid storing in strong vibration environments (such as near air compressors) to prevent bearing corrosion or loose windings.

2. Moisture prevention and protective measures

Moisture proof treatment: Activate the built-in space heater of the motor (powered according to the voltage indicated on the nameplate), or place a 25-40W built-in incandescent lamp in the junction box to maintain the internal temperature of the motor 3 ℃ higher than the dew point of the environment, to prevent winding condensation and moisture.

Bearing protection: Manually rotate the motor shaft 3-5 times a month to evenly distribute the lubricating grease and prevent corrosion of the bearing raceway; Long term storage (≥ 3 months) requires the addition of specialized lubricating grease (ExxonMobil Polyrex EM).

Electrical protection: The junction box is sealed properly, and the terminals are coated with rust proof grease; If the motor is equipped with a water cooling system, it is necessary to drain the accumulated water in the pipeline to prevent frost cracking or internal corrosion in winter.

3. Regular inspection and maintenance

Perform insulation resistance testing (using a 500VDC megohmmeter) every 3 months and record the test data. If the insulation resistance is lower than the standard value (random winding<5M Ω/formed winding<100M Ω), drying treatment (using hot air drying or low-voltage electrification drying) is required.

Verify the accuracy of temperature detectors and vibration sensors every 6 months, check the working status of heaters, and ensure the normal operation of auxiliary equipment.

Additional measures for long-term storage (≥ 6 months): Remove external connecting components such as couplings, lift the electric brush (if it is a wound rotor motor), apply anti rust oil to the shaft extension end and wrap it with a protective cover; Regularly inspect the surface coating of the motor, and promptly touch up the paint if rust appears.

（3） Installation and commissioning specifications

1. Preparation before installation

Foundation and base requirements: The installation foundation should be made of reinforced concrete structure, with strength meeting the load requirements during motor operation (bearing capacity ≥ 3 times the weight of the motor), and the levelness error of the foundation plane should be ≤ 0.04mm/m.

Using a rigid bottom plate or common base, cushioning pads (such as rubber cushioning pads or spring shock absorbers) are placed between the bottom plate and the foundation to reduce vibration transmission; The anchor bolts should use high-strength bolts (grade ≥ 8.8) and reserve secondary grouting holes.

Preparation of tools and materials: Prepare installation tools and consumables such as dial gauges, level gauges, torque wrenches, grouting materials (epoxy resin or fine aggregate concrete), terminal blocks, insulation tape, etc.

2. Core installation steps

Motor fixation: Place the motor on the base plate, adjust the levelness (measured with a spirit level, with longitudinal and transverse levelness errors ≤ 0.04mm/m), insert the anchor bolts and pre tighten them, then perform secondary grouting. After the grouting material strength reaches the design requirements (usually ≥ 7 days), tighten the anchor bolts according to the specified torque (recommended torque values refer to the motor manual).

Transmission connection installation:

Coupling transmission: Choose a rigid or flexible coupling that matches the motor shaft diameter, and use a dial gauge to check the coaxiality and parallelism during installation. When the speed is less than 2500rpm, the coaxiality error is ≤ 0.04mm (rigid coupling)/≤ 0.05mm (flexible coupling), and the parallelism error is ≤ 0.03mm. Reserve 1-2.4mm gap at the coupling end to avoid collision during operation.