Electric Motor Overhaul Checklist

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Electric motor overhaul checklist.

Typical bearing problems include insufficient lubrication worn bearings hot motor excessive loading harsh external environments or replacement with the wrong bearing type. This ensures electrical equipment is kept in good working condition at all times. The 90 year old company has a customer base consisting mainly of pulp and paper producers mining operations and cement and aggregate plants. Low contact resistance high insulation resistance bearing lubrication proper air gap and overall dryness of the motor assembly.

One of the most common causes of electric motor failures is bearing failure. A standard electric motor overhaul includes an initial equipment inspection and diagnosis bearing replacement a test run and report. This checklist incorporates all range of motors equipment. Preventive electric motor maintenance.

Electric motor repair shops with an ongoing commitment to high quality standards are the ones most likely to earn certification. This was the case with electrical repair service co inc. Maintenance procedure to overhaul electrical motors the main aim for the maintenance of electrical motor is to ensure. A sample overhaul work scope includes inspect and record all relevant data from the nameplate.

Many sections are mainly applicable to the lv mv induction motor equipment and many others are applicable to either synchronous or dc motors. For bearings fitted with proximity probes the unfiltered peak to peak value of vibration including shaft run out at any load between no load. The measurements shall be carried out with an instrument conforming to iso 2954 10 1000 hz frequency range. This saves time and money.

A further plus point. All work steps that are needed for the reconditioning or overhaul of an electric motor including disassembly cleaning drying balancing and so on are carried out in close proximity at our own motor factory in berlin. This article describes a c electrical motor troubleshooting. With the motor at normal operating temperature the vibration velocity shall not exceed 2 8 mm s rms or 4 mm s peak in any direction.

Almost all electrical equipment requires planned inspection and maintenance being carrying out. The checklist should also cover inspection of bearings. Carry out electrical mechanical check tests to verify motor condition any reported faults where possible. A well planned electric motor preventive maintenance programme is the key to dependable long life operation of electric motors.