Sometimes it is more cost-effective to not perform maintenance on equipment than to do so. How do you know when you encounter that situation?
- The equipment has reached its recommended replacement age. Transformers, circuit breakers, and other equipment that may fail spectacularly (and dangerously) should be replaced after X years of service. You can find X in the relevant standards. After that age is reached, relying on maintenance to prevent failure is merely gambling.
- The equipment needs repair often. Despite undergoing the recommended maintenance at the recommended intervals, the equipment undergoes repairs frequently. It may be defective or ill-suited to the application. Either way, performing maintenance instead of replacing equipment is sort of like airing up bald tires.
- A failure would not affect safety, the environment, or the production schedule. For example, if a machine is needed for only a few hours each month, there’s probably no production hit if it breaks.
- It is expensive to maintain. For example, an exhaust fan in the roof is hard to get to and unlikely to fail.
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