Following is a technician's checklist for properly installing a motor:
• Inspect Before Installation
• Ensure that the motor was not damaged in shipment.
• Check nameplate for proper frequency, voltage, horsepower, RPM, and rotation.
• Safety Precautions
• Disconnect power source.
• Install all wiring, fusing and grounding in accordance with codes.
• Keep all parts of your body and loose clothing away from moving parts.
• Be careful when touching a motor operating at or above its normal temperature. It will be hot.
• Cover or guard all moving parts.
• Installation
• Make sure airflow around motor is not restricted.
• Fasten motor securely to its mounting.
• Make sure shaft-connected devices are securely attached.
• Check for proper alignment of couplings.
• Check connection diagram to ensure proper voltage and rotation connections.
• Make sure motor is properly grounded.
• Insulate all connections
• Startup
• Replace terminal box cover.
• Check direction of rotation.
• Check operation of motor to be sure it comes up to speed, runs smoothly and that the current draw does not exceed the nameplate rating.
• Shut off power immediately if a problem exists and determine the source of the trouble before restarting
• Maintenance
• Clean motor and surroundings to ensure proper ventilation.
• Re-lubricate sleeve bearings as recommended.
• Check electrical, mechanical connections for tightness.
Source: A.O. Smith Electrical Products Co.
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