Lead Testing - The initial cause of the motor failure may have been the leads shorting to each other or to the junction box. It's also possible the leads were damaged during removal. It's critical to fully inspect the leads before reconnecting.

Connections - Another important installation consideration are the connections. Loose connections can lead to high current flow, heat and eventually failure of the lead or the complete winding.

Shaft Alignment - Improper shaft alignment can lead to accelerated wear on shafts, couplings and bearings. The misalignment also wastes energy as additional torque is required to overcome this condition. 

Mounting Bolts - The mounting torque is another very important part of a precision installation. Too loose can result in soft foot. Too tight may crack the feet. Either case will cause high vibration and premature bearing failure.