4 FM quick reads on Elevator
1. Keeping Your Elevator Machine Room Cool
It's not unusual for an elevator drive and control system to get too hot — especially in traction elevators where the equipment sits in a penthouse on the roof. Typically such penthouses aren't heated are cooled. Instead, ventilation is provided by louvers mounted on the penthouse walls.
The problem is that the temperature in the mechanical room tracks with the outside air temperature. On a warm summer day, the temperature in that rooftop room can easily exceed 100 degrees. And as the temperature increases, so too does the chance of a breakdown. There is another problem with that approach: Using outside air brings in dust and variations in humidity. Dust acts as an extra layer of insulation, which makes overheating worse. Humidity accelerates the corrosion of contacts.
The best solution to this problem is to install a dedicated cooling system for the elevator equipment room. The system should be designed to keep the temperature and humidity within the recommendations of the elevator manufacturer. Seal outside openings to limit the dust and dirt that can enter the machine room.
3. Is Your Elevator Too Slow?
In some buildings - especially Class A offices, the speed of elevators can be key way to set one building apart from another.
One way to improve elevator efficiency is to employ a destination dispatch system. In a destination dispatch system, occupants enter their destination floor instead of using push buttons in a lobby. The dispatch system then picks the most efficient elevator to carry the passenger — which may not be the next arriving one. The speed of the elevators doesn't change, but grouping destinations improves performance compared to a traditional dispatching system. The end result is reduced wait times for occupants.
Destination dispatch could improve handling capacity by as much as 25 percent, experts say. That can be especially important in older buildings where occupancy has grown over time.
4. Is Your Elevator Causing Electromagnetic Interference?
Most building occupants don't think about the elevators until something goes wrong. And with service lives that often exceed 20 years, facility executives can't be blamed for acting the same way.
Once elevator performance starts to degrade, facility executives have a hardchoice to make: Does the elevator system require modernization? Because the projects are expensive, and because it can in inconvenience occupants, facility executives need to get the decision right. There are many reasons to undertake a modernization. In Class A buildings ,the need to stay competitive is a driving factor. Other reasons, may not beas obvious.
For example, are there problems with electromagnetic noise or poor wireless reception in the building? Reducing electromagnetic noise is one benefit that can be overlooked. Computers and wireless networks are sensitive to electromagnetic noise. Some solid-state elevator drives generate less noise than others. Some cleaner drives come with a cost premium, so facility executives need to weigh options during bidding.
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