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The rule of thumb in the elevator industry is to think 20 years and out. After 20 to 25 years of service, elevators are probably reaching the end of their cost-effective lives, and building owners should be preparing for a modernization. That rule of thumb is even more important these days because it was about 25 years ago that saw the end of relay-logic control systems.
Today, relay controls and the technicians who service them are ready for retirement. If a building owner still has a relay-logic system in good running order and hasn’t had problems, that’s a tribute to a good preventive maintenance program. Unfortunately, odds are that parts are scare today and so are technicians who understand the technology.
If you have a relay system, be ready to consider a modernization in the near future.