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Making Motors Reliable

Posted January 02, 2008 7:06 AM

Motor reliability is often taken for granted in chemical manufacturing. However, when motor problems arise, the problems can result in considerable loses for the company. Improving motor reliability requires basic testing and benchmarking, which can improve outcomes and reduce downtime that results from motor failure. How do you minimize motor downtime?

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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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Re: Making Motors Reliable

01/03/2008 5:37 AM

Mission-critical pumps often have a standby pump installed in parallel with the duty pump(s), and the controls arranged so that is any duty pump fails or is unavailable, the standby pump starts.

It is common to rotate the duty/standby designation at intervals (nightly?) without stopping the pumps so that in the event of a stoppage a different pump will start.

Maintenance practices vary. Some organisations like similar running hours on each pump. Others will let one pump's running hours advance over the other pumps so that it becomes the priority for planned preventative maintenance.

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