Electric Motor Visual Inspection Checklist

Important motors should also receive a thorough visual inspection as well as voltage and current checks.

Electric motor visual inspection checklist.

Most motors are designed to operate in ambient temperatures that do not exceed 40 c generally speaking each 10 c rise above its rated tem perature cuts a motor s life in half. Temperature of the motor above ambient. The complete table of inspection and testing activities that shows each activity to be performed in order to make sure that the installed low and medium voltage electric motors are compliant to the project s specifications and requirements the reference to be followed acceptance criteria responsible personnel related checklist from item. If the electric motor operates in a rugged environment you will see signs of corrosion and dirt buildup on individual components.

To inspect electric motors for possible overheating see checklist in table below and possible remedies. Perform annual insulation resistance ir and other appropriate tests. Some sections may explain explicitly between the three configurations but have different requirements for each. Typical bearing problems include insufficient lubrication worn bearings hot motor excessive loading harsh external environments or replacement with the wrong bearing type.

Generally a good place to start would be the supply intake. Outdoors checklist 6 27. Inspection of electric motors regular inspection of electric motors will ensure an excessively hot motor is spotted and cause of overheating eliminated immediately. This will give a reasonable indication of the age type and size of the installation.

Inadequate air flow or poor ventilation. The checklist should also cover inspection of bearings. One of the most common causes of electric motor failures is bearing failure. Service equipment feeders and panelboards checklist 6 28.

Many sections are mainly applicable to the lv mv induction motor equipment and many others are applicable to either synchronous or dc motors. Check and torque test bolted electrical connections as necessary to specified levels. Regularly scheduled infrared inspections of electric motors identify motors which are starting to overheat. A quick visual inspection can reveal some important details about the electric motor.

With electric power checklist 6 26. Commercial and industrial inspections checklist 7 1. This checklist incorporates all range of motors equipment. Take a look at its physical condition and record your observations.

All values should be recorded and compared each year. Acb maintenance withdrawable or fixed check contacts arc chutes secondary injection etc. Final visual inspection to insure all clear after work completed. Mobile manufactured home site inspections chapter 7.