23. September 2010 04:29
Before undertaking any major modernization project, they must ensure that any elevators not being serviced are operating at peak capability. Elevator modernization consultant engineer evaluates the existing elevator system to determine which components, if any, may be retrieved. Firstly you need to take a critical look at the elevator entrances. Doors constructed of modern flush hollow metal can be reused, but panel-type or older glass doors most often will have to be replaced. In many cases, existing frames may be kept and covered, and worn sills can be salvaged by adding a “layon” sill on top of the old one.
Next, the engineer should check out the condition of the elevator’s operating mechanism. Pay close attention to the door operator; many openers manufactured in the last 20 years are of good quality and may be overhauled and reused. Similarly the elevator’s tracks, locks, and hangers can be reconditioned.
When evaluating the condition of the leveller, you should remember that elevator cars today employ a variety of levelling mechanisms. Levelling systems that employ a sensor that is mounted directly on the car in the hoist way can be reused; while levelling systems that employ a wire or cable that is attached to a separate mechanism located in the machine room are considered obsolete today and so must be replaced.